log_event.cc 290 KB
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/* Copyright (C) 2000-2004 MySQL AB
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; version 2 of the License.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */


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#ifdef MYSQL_CLIENT

#include "mysql_priv.h"

#else
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#ifdef USE_PRAGMA_IMPLEMENTATION
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#pragma implementation				// gcc: Class implementation
#endif
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#include "mysql_priv.h"
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#include "slave.h"
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#include "rpl_rli.h"
#include "rpl_mi.h"
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#include "rpl_filter.h"
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#include "rpl_utility.h"
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#include "rpl_record.h"
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#include <my_dir.h>
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#endif /* MYSQL_CLIENT */
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#include <base64.h>
#include <my_bitmap.h>
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#define log_cs	&my_charset_latin1
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#define FLAGSTR(V,F) ((V)&(F)?#F" ":"")

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/*
  Size of buffer for printing a double in format %.<PREC>g

  optional '-' + optional zero + '.'  + PREC digits + 'e' + sign +
  exponent digits + '\0'
*/
#define FMT_G_BUFSIZE(PREC) (3 + (PREC) + 5 + 1)


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#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
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static const char *HA_ERR(int i)
{
  switch (i) {
  case HA_ERR_KEY_NOT_FOUND: return "HA_ERR_KEY_NOT_FOUND";
  case HA_ERR_FOUND_DUPP_KEY: return "HA_ERR_FOUND_DUPP_KEY";
  case HA_ERR_RECORD_CHANGED: return "HA_ERR_RECORD_CHANGED";
  case HA_ERR_WRONG_INDEX: return "HA_ERR_WRONG_INDEX";
  case HA_ERR_CRASHED: return "HA_ERR_CRASHED";
  case HA_ERR_WRONG_IN_RECORD: return "HA_ERR_WRONG_IN_RECORD";
  case HA_ERR_OUT_OF_MEM: return "HA_ERR_OUT_OF_MEM";
  case HA_ERR_NOT_A_TABLE: return "HA_ERR_NOT_A_TABLE";
  case HA_ERR_WRONG_COMMAND: return "HA_ERR_WRONG_COMMAND";
  case HA_ERR_OLD_FILE: return "HA_ERR_OLD_FILE";
  case HA_ERR_NO_ACTIVE_RECORD: return "HA_ERR_NO_ACTIVE_RECORD";
  case HA_ERR_RECORD_DELETED: return "HA_ERR_RECORD_DELETED";
  case HA_ERR_RECORD_FILE_FULL: return "HA_ERR_RECORD_FILE_FULL";
  case HA_ERR_INDEX_FILE_FULL: return "HA_ERR_INDEX_FILE_FULL";
  case HA_ERR_END_OF_FILE: return "HA_ERR_END_OF_FILE";
  case HA_ERR_UNSUPPORTED: return "HA_ERR_UNSUPPORTED";
  case HA_ERR_TO_BIG_ROW: return "HA_ERR_TO_BIG_ROW";
  case HA_WRONG_CREATE_OPTION: return "HA_WRONG_CREATE_OPTION";
  case HA_ERR_FOUND_DUPP_UNIQUE: return "HA_ERR_FOUND_DUPP_UNIQUE";
  case HA_ERR_UNKNOWN_CHARSET: return "HA_ERR_UNKNOWN_CHARSET";
  case HA_ERR_WRONG_MRG_TABLE_DEF: return "HA_ERR_WRONG_MRG_TABLE_DEF";
  case HA_ERR_CRASHED_ON_REPAIR: return "HA_ERR_CRASHED_ON_REPAIR";
  case HA_ERR_CRASHED_ON_USAGE: return "HA_ERR_CRASHED_ON_USAGE";
  case HA_ERR_LOCK_WAIT_TIMEOUT: return "HA_ERR_LOCK_WAIT_TIMEOUT";
  case HA_ERR_LOCK_TABLE_FULL: return "HA_ERR_LOCK_TABLE_FULL";
  case HA_ERR_READ_ONLY_TRANSACTION: return "HA_ERR_READ_ONLY_TRANSACTION";
  case HA_ERR_LOCK_DEADLOCK: return "HA_ERR_LOCK_DEADLOCK";
  case HA_ERR_CANNOT_ADD_FOREIGN: return "HA_ERR_CANNOT_ADD_FOREIGN";
  case HA_ERR_NO_REFERENCED_ROW: return "HA_ERR_NO_REFERENCED_ROW";
  case HA_ERR_ROW_IS_REFERENCED: return "HA_ERR_ROW_IS_REFERENCED";
  case HA_ERR_NO_SAVEPOINT: return "HA_ERR_NO_SAVEPOINT";
  case HA_ERR_NON_UNIQUE_BLOCK_SIZE: return "HA_ERR_NON_UNIQUE_BLOCK_SIZE";
  case HA_ERR_NO_SUCH_TABLE: return "HA_ERR_NO_SUCH_TABLE";
  case HA_ERR_TABLE_EXIST: return "HA_ERR_TABLE_EXIST";
  case HA_ERR_NO_CONNECTION: return "HA_ERR_NO_CONNECTION";
  case HA_ERR_NULL_IN_SPATIAL: return "HA_ERR_NULL_IN_SPATIAL";
  case HA_ERR_TABLE_DEF_CHANGED: return "HA_ERR_TABLE_DEF_CHANGED";
  case HA_ERR_NO_PARTITION_FOUND: return "HA_ERR_NO_PARTITION_FOUND";
  case HA_ERR_RBR_LOGGING_FAILED: return "HA_ERR_RBR_LOGGING_FAILED";
  case HA_ERR_DROP_INDEX_FK: return "HA_ERR_DROP_INDEX_FK";
  case HA_ERR_FOREIGN_DUPLICATE_KEY: return "HA_ERR_FOREIGN_DUPLICATE_KEY";
  case HA_ERR_TABLE_NEEDS_UPGRADE: return "HA_ERR_TABLE_NEEDS_UPGRADE";
  case HA_ERR_TABLE_READONLY: return "HA_ERR_TABLE_READONLY";
  case HA_ERR_AUTOINC_READ_FAILED: return "HA_ERR_AUTOINC_READ_FAILED";
  case HA_ERR_AUTOINC_ERANGE: return "HA_ERR_AUTOINC_ERANGE";
  case HA_ERR_GENERIC: return "HA_ERR_GENERIC";
  case HA_ERR_RECORD_IS_THE_SAME: return "HA_ERR_RECORD_IS_THE_SAME";
  case HA_ERR_LOGGING_IMPOSSIBLE: return "HA_ERR_LOGGING_IMPOSSIBLE";
  case HA_ERR_CORRUPT_EVENT: return "HA_ERR_CORRUPT_EVENT";
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  case HA_ERR_ROWS_EVENT_APPLY : return "HA_ERR_ROWS_EVENT_APPLY";
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  }
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  return 0;
}

/**
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   Error reporting facility for Rows_log_event::do_apply_event

   @param level     error, warning or info
   @param ha_error  HA_ERR_ code
   @param rli       pointer to the active Relay_log_info instance
   @param thd       pointer to the slave thread's thd
   @param table     pointer to the event's table object
   @param type      the type of the event
   @param log_name  the master binlog file name
   @param pos       the master binlog file pos (the next after the event)

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*/
static void inline slave_rows_error_report(enum loglevel level, int ha_error,
                                           Relay_log_info const *rli, THD *thd,
                                           TABLE *table, const char * type,
                                           const char *log_name, ulong pos)
{
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  const char *handler_error= HA_ERR(ha_error);
  char buff[MAX_SLAVE_ERRMSG], *slider;
  const char *buff_end= buff + sizeof(buff);
  uint len;
  List_iterator_fast<MYSQL_ERROR> it(thd->warn_list);
  MYSQL_ERROR *err;
  buff[0]= 0;

  for (err= it++, slider= buff; err && slider < buff_end - 1;
       slider += len, err= it++)
  {
    len= my_snprintf(slider, buff_end - slider,
                     " %s, Error_code: %d;", err->msg, err->code);
  }
  
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  rli->report(level, thd->is_error()? thd->main_da.sql_errno() : 0,
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              "Could not execute %s event on table %s.%s;"
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              "%s handler error %s; "
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              "the event's master log %s, end_log_pos %lu",
              type, table->s->db.str,
              table->s->table_name.str,
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              buff,
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              handler_error == NULL? "<unknown>" : handler_error,
              log_name, pos);
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}
#endif

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/*
  Cache that will automatically be written to a dedicated file on
  destruction.

  DESCRIPTION

 */
class Write_on_release_cache
{
public:
  enum flag
  {
    FLUSH_F
  };

  typedef unsigned short flag_set;

  /*
    Constructor.

    SYNOPSIS
      Write_on_release_cache
      cache  Pointer to cache to use
      file   File to write cache to upon destruction
      flags  Flags for the cache

    DESCRIPTION

      Class used to guarantee copy of cache to file before exiting the
      current block.  On successful copy of the cache, the cache will
      be reinited as a WRITE_CACHE.

      Currently, a pointer to the cache is provided in the
      constructor, but it would be possible to create a subclass
      holding the IO_CACHE itself.
   */
  Write_on_release_cache(IO_CACHE *cache, FILE *file, flag_set flags = 0)
    : m_cache(cache), m_file(file), m_flags(flags)
  {
    reinit_io_cache(m_cache, WRITE_CACHE, 0L, FALSE, TRUE);
  }

  ~Write_on_release_cache()
  {
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    copy_event_cache_to_file_and_reinit(m_cache, m_file);
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    if (m_flags | FLUSH_F)
      fflush(m_file);
  }

  /*
    Return a pointer to the internal IO_CACHE.

    SYNOPSIS
      operator&()

    DESCRIPTION
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      Function to return a pointer to the internal cache, so that the
      object can be treated as a IO_CACHE and used with the my_b_*
      IO_CACHE functions
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    RETURN VALUE
      A pointer to the internal IO_CACHE.
   */
  IO_CACHE *operator&()
  {
    return m_cache;
  }

private:
  // Hidden, to prevent usage.
  Write_on_release_cache(Write_on_release_cache const&);

  IO_CACHE *m_cache;
  FILE *m_file;
  flag_set m_flags;
};

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#ifndef DBUG_OFF
uint debug_not_change_ts_if_art_event= 1; // bug#29309 simulation
#endif
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/*
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  pretty_print_str()
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*/
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#ifdef MYSQL_CLIENT
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static void pretty_print_str(IO_CACHE* cache, const char* str, int len)
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{
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  const char* end = str + len;
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  my_b_printf(cache, "\'");
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  while (str < end)
  {
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    char c;
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    switch ((c=*str++)) {
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    case '\n': my_b_printf(cache, "\\n"); break;
    case '\r': my_b_printf(cache, "\\r"); break;
    case '\\': my_b_printf(cache, "\\\\"); break;
    case '\b': my_b_printf(cache, "\\b"); break;
    case '\t': my_b_printf(cache, "\\t"); break;
    case '\'': my_b_printf(cache, "\\'"); break;
    case 0   : my_b_printf(cache, "\\0"); break;
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    default:
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      my_b_printf(cache, "%c", c);
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      break;
    }
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  }
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  my_b_printf(cache, "\'");
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}
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#endif /* MYSQL_CLIENT */
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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static void clear_all_errors(THD *thd, Relay_log_info *rli)
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{
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  thd->is_slave_error = 0;
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  thd->clear_error();
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  rli->clear_error();
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}

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/**
  Ignore error code specified on command line.
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*/
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inline int ignored_error_code(int err_code)
{
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#ifdef HAVE_NDB_BINLOG
  /*
    The following error codes are hard-coded and will always be ignored.
  */
  switch (err_code)
  {
  case ER_DB_CREATE_EXISTS:
  case ER_DB_DROP_EXISTS:
    return 1;
  default:
    /* Nothing to do */
    break;
  }
#endif
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  return ((err_code == ER_SLAVE_IGNORED_TABLE) ||
          (use_slave_mask && bitmap_is_set(&slave_error_mask, err_code)));
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}
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#endif
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/*
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  pretty_print_str()
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*/
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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static char *pretty_print_str(char *packet, const char *str, int len)
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{
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  const char *end= str + len;
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  char *pos= packet;
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  *pos++= '\'';
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  while (str < end)
  {
    char c;
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    switch ((c=*str++)) {
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    case '\n': *pos++= '\\'; *pos++= 'n'; break;
    case '\r': *pos++= '\\'; *pos++= 'r'; break;
    case '\\': *pos++= '\\'; *pos++= '\\'; break;
    case '\b': *pos++= '\\'; *pos++= 'b'; break;
    case '\t': *pos++= '\\'; *pos++= 't'; break;
    case '\'': *pos++= '\\'; *pos++= '\''; break;
    case 0   : *pos++= '\\'; *pos++= '0'; break;
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    default:
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      *pos++= c;
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      break;
    }
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  }
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  *pos++= '\'';
  return pos;
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}
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#endif /* !MYSQL_CLIENT */
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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/**
  Creates a temporary name for load data infile:.
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  @param buf		      Store new filename here
  @param file_id	      File_id (part of file name)
  @param event_server_id     Event_id (part of file name)
  @param ext		      Extension for file name
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  @return
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    Pointer to start of extension
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*/
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static char *slave_load_file_stem(char *buf, uint file_id,
                                  int event_server_id, const char *ext)
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{
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  char *res;
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  fn_format(buf,"SQL_LOAD-",slave_load_tmpdir, "", MY_UNPACK_FILENAME);
  to_unix_path(buf);

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  buf = strend(buf);
  buf = int10_to_str(::server_id, buf, 10);
  *buf++ = '-';
  buf = int10_to_str(event_server_id, buf, 10);
  *buf++ = '-';
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  res= int10_to_str(file_id, buf, 10);
  strmov(res, ext);                             // Add extension last
  return res;                                   // Pointer to extension
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}
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#endif
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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/**
  Delete all temporary files used for SQL_LOAD.
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*/
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static void cleanup_load_tmpdir()
{
  MY_DIR *dirp;
  FILEINFO *file;
  uint i;
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  char fname[FN_REFLEN], prefbuf[31], *p;
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  if (!(dirp=my_dir(slave_load_tmpdir,MYF(MY_WME))))
    return;

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  /* 
     When we are deleting temporary files, we should only remove
     the files associated with the server id of our server.
     We don't use event_server_id here because since we've disabled
     direct binlogging of Create_file/Append_file/Exec_load events
     we cannot meet Start_log event in the middle of events from one 
     LOAD DATA.
  */
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  p= strmake(prefbuf, STRING_WITH_LEN("SQL_LOAD-"));
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  p= int10_to_str(::server_id, p, 10);
  *(p++)= '-';
  *p= 0;

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  for (i=0 ; i < (uint)dirp->number_off_files; i++)
  {
    file=dirp->dir_entry+i;
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    if (is_prefix(file->name, prefbuf))
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    {
      fn_format(fname,file->name,slave_load_tmpdir,"",MY_UNPACK_FILENAME);
      my_delete(fname, MYF(0));
    }
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  }

  my_dirend(dirp);
}
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#endif
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/*
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  write_str()
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*/
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static bool write_str(IO_CACHE *file, const char *str, uint length)
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{
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  uchar tmp[1];
  tmp[0]= (uchar) length;
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  return (my_b_safe_write(file, tmp, sizeof(tmp)) ||
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	  my_b_safe_write(file, (uchar*) str, length));
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}


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/*
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  read_str()
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*/
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static inline int read_str(const char **buf, const char *buf_end,
                           const char **str, uint8 *len)
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{
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  if (*buf + ((uint) (uchar) **buf) >= buf_end)
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    return 1;
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  *len= (uint8) **buf;
  *str= (*buf)+1;
  (*buf)+= (uint) *len+1;
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  return 0;
}

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/**
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  Transforms a string into "" or its expression in 0x... form.
*/
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char *str_to_hex(char *to, const char *from, uint len)
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{
  if (len)
  {
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    *to++= '0';
    *to++= 'x';
    to= octet2hex(to, from, len);
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  }
  else
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    to= strmov(to, "\"\"");
  return to;                               // pointer to end 0 of 'to'
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}

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#ifndef MYSQL_CLIENT

/**
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  Append a version of the 'from' string suitable for use in a query to
  the 'to' string.  To generate a correct escaping, the character set
  information in 'csinfo' is used.
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*/

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int
append_query_string(CHARSET_INFO *csinfo,
                    String const *from, String *to)
{
  char *beg, *ptr;
  uint32 const orig_len= to->length();
  if (to->reserve(orig_len + from->length()*2+3))
    return 1;

  beg= to->c_ptr_quick() + to->length();
  ptr= beg;
  if (csinfo->escape_with_backslash_is_dangerous)
    ptr= str_to_hex(ptr, from->ptr(), from->length());
  else
  {
    *ptr++= '\'';
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    ptr+= escape_string_for_mysql(csinfo, ptr, 0,
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                                  from->ptr(), from->length());
    *ptr++='\'';
  }
  to->length(orig_len + ptr - beg);
  return 0;
}
#endif

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/**
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  Prints a "session_var=value" string. Used by mysqlbinlog to print some SET
  commands just before it prints a query.
*/

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#ifdef MYSQL_CLIENT
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static void print_set_option(IO_CACHE* file, uint32 bits_changed,
                             uint32 option, uint32 flags, const char* name,
                             bool* need_comma)
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{
  if (bits_changed & option)
  {
    if (*need_comma)
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      my_b_printf(file,", ");
    my_b_printf(file,"%s=%d", name, test(flags & option));
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    *need_comma= 1;
  }
}
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#endif
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/**************************************************************************
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	Log_event methods (= the parent class of all events)
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**************************************************************************/
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/**
  @return
  returns the human readable name of the event's type
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*/
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const char* Log_event::get_type_str(Log_event_type type)
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{
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  switch(type) {
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  case START_EVENT_V3:  return "Start_v3";
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  case STOP_EVENT:   return "Stop";
  case QUERY_EVENT:  return "Query";
  case ROTATE_EVENT: return "Rotate";
  case INTVAR_EVENT: return "Intvar";
  case LOAD_EVENT:   return "Load";
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  case NEW_LOAD_EVENT:   return "New_load";
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  case SLAVE_EVENT:  return "Slave";
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  case CREATE_FILE_EVENT: return "Create_file";
  case APPEND_BLOCK_EVENT: return "Append_block";
  case DELETE_FILE_EVENT: return "Delete_file";
  case EXEC_LOAD_EVENT: return "Exec_load";
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  case RAND_EVENT: return "RAND";
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  case XID_EVENT: return "Xid";
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  case USER_VAR_EVENT: return "User var";
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  case FORMAT_DESCRIPTION_EVENT: return "Format_desc";
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  case TABLE_MAP_EVENT: return "Table_map";
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  case PRE_GA_WRITE_ROWS_EVENT: return "Write_rows_event_old";
  case PRE_GA_UPDATE_ROWS_EVENT: return "Update_rows_event_old";
  case PRE_GA_DELETE_ROWS_EVENT: return "Delete_rows_event_old";
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  case WRITE_ROWS_EVENT: return "Write_rows";
  case UPDATE_ROWS_EVENT: return "Update_rows";
  case DELETE_ROWS_EVENT: return "Delete_rows";
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  case BEGIN_LOAD_QUERY_EVENT: return "Begin_load_query";
  case EXECUTE_LOAD_QUERY_EVENT: return "Execute_load_query";
552
  case INCIDENT_EVENT: return "Incident";
553
  default: return "Unknown";				/* impossible */
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  }
}

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const char* Log_event::get_type_str()
{
  return get_type_str(get_type_code());
}

562

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/*
564
  Log_event::Log_event()
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*/
566

567
#ifndef MYSQL_CLIENT
568
Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans)
569
  :log_pos(0), temp_buf(0), exec_time(0), flags(flags_arg), thd(thd_arg)
570
{
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  server_id=	thd->server_id;
  when=		thd->start_time;
573
  cache_stmt=	using_trans;
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}


577
/**
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  This minimal constructor is for when you are not even sure that there
  is a valid THD. For example in the server when we are shutting down or
  flushing logs after receiving a SIGHUP (then we must write a Rotate to
  the binlog but we have no THD, so we need this minimal constructor).
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*/

584
Log_event::Log_event()
585
  :temp_buf(0), exec_time(0), flags(0), cache_stmt(0),
586 587
   thd(0)
{
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  server_id=	::server_id;
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  /*
    We can't call my_time() here as this would cause a call before
    my_init() is called
  */
  when=		0;
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  log_pos=	0;
595
}
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#endif /* !MYSQL_CLIENT */
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/*
600
  Log_event::Log_event()
601
*/
602

603
Log_event::Log_event(const char* buf,
604
                     const Format_description_log_event* description_event)
605
  :temp_buf(0), cache_stmt(0)
606
{
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#ifndef MYSQL_CLIENT
  thd = 0;
609
#endif
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  when = uint4korr(buf);
  server_id = uint4korr(buf + SERVER_ID_OFFSET);
612
  data_written= uint4korr(buf + EVENT_LEN_OFFSET);
613
  if (description_event->binlog_version==1)
614
  {
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    log_pos= 0;
    flags= 0;
    return;
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  }
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  /* 4.0 or newer */
  log_pos= uint4korr(buf + LOG_POS_OFFSET);
  /*
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    If the log is 4.0 (so here it can only be a 4.0 relay log read by
    the SQL thread or a 4.0 master binlog read by the I/O thread),
    log_pos is the beginning of the event: we transform it into the end
    of the event, which is more useful.
    But how do you know that the log is 4.0: you know it if
    description_event is version 3 *and* you are not reading a
    Format_desc (remember that mysqlbinlog starts by assuming that 5.0
    logs are in 4.0 format, until it finds a Format_desc).
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  */
  if (description_event->binlog_version==3 &&
      buf[EVENT_TYPE_OFFSET]<FORMAT_DESCRIPTION_EVENT && log_pos)
633
  {
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      /*
        If log_pos=0, don't change it. log_pos==0 is a marker to mean
        "don't change rli->group_master_log_pos" (see
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        inc_group_relay_log_pos()). As it is unreal log_pos, adding the
        event len's is nonsense. For example, a fake Rotate event should
639
        not have its log_pos (which is 0) changed or it will modify
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        Exec_master_log_pos in SHOW SLAVE STATUS, displaying a nonsense
        value of (a non-zero offset which does not exist in the master's
        binlog, so which will cause problems if the user uses this value
        in CHANGE MASTER).
644
      */
645
    log_pos+= data_written; /* purecov: inspected */
646
  }
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  DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));

  flags= uint2korr(buf + FLAGS_OFFSET);
  if ((buf[EVENT_TYPE_OFFSET] == FORMAT_DESCRIPTION_EVENT) ||
      (buf[EVENT_TYPE_OFFSET] == ROTATE_EVENT))
  {
    /*
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      These events always have a header which stops here (i.e. their
      header is FROZEN).
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    */
    /*
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      Initialization to zero of all other Log_event members as they're
      not specified. Currently there are no such members; in the future
      there will be an event UID (but Format_description and Rotate
      don't need this UID, as they are not propagated through
      --log-slave-updates (remember the UID is used to not play a query
      twice when you have two masters which are slaves of a 3rd master).
      Then we are done.
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    */
    return;
  }
  /* otherwise, go on with reading the header from buf (nothing now) */
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}

#ifndef MYSQL_CLIENT
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#ifdef HAVE_REPLICATION
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674
int Log_event::do_update_pos(Relay_log_info *rli)
675
{
676
  /*
677
    rli is null when (as far as I (Guilhem) know) the caller is
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    Load_log_event::do_apply_event *and* that one is called from
    Execute_load_log_event::do_apply_event.  In this case, we don't
    do anything here ; Execute_load_log_event::do_apply_event will
    call Log_event::do_apply_event again later with the proper rli.
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    Strictly speaking, if we were sure that rli is null only in the
    case discussed above, 'if (rli)' is useless here.  But as we are
    not 100% sure, keep it for now.
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    Matz: I don't think we will need this check with this refactoring.
687
  */
688
  if (rli)
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  {
    /*
      bug#29309 simulation: resetting the flag to force
      wrong behaviour of artificial event to update
      rli->last_master_timestamp for only one time -
      the first FLUSH LOGS in the test.
    */
    DBUG_EXECUTE_IF("let_first_flush_log_change_timestamp",
                    if (debug_not_change_ts_if_art_event == 1
                        && is_artificial_event())
                    {
                      debug_not_change_ts_if_art_event= 0;
                    });
#ifndef DBUG_OFF
    rli->stmt_done(log_pos, 
                   is_artificial_event() &&
                   debug_not_change_ts_if_art_event > 0 ? 0 : when);
#else
    rli->stmt_done(log_pos, is_artificial_event()? 0 : when);
#endif
    DBUG_EXECUTE_IF("let_first_flush_log_change_timestamp",
                    if (debug_not_change_ts_if_art_event == 0)
                    {
                      debug_not_change_ts_if_art_event= 2;
                    });
  }
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  return 0;                                   // Cannot fail currently
}
717

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Log_event::enum_skip_reason
720
Log_event::do_shall_skip(Relay_log_info *rli)
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{
  DBUG_PRINT("info", ("ev->server_id=%lu, ::server_id=%lu,"
                      " rli->replicate_same_server_id=%d,"
                      " rli->slave_skip_counter=%d",
                      (ulong) server_id, (ulong) ::server_id,
                      rli->replicate_same_server_id,
                      rli->slave_skip_counter));
728 729
  if (server_id == ::server_id && !rli->replicate_same_server_id ||
      rli->slave_skip_counter == 1 && rli->is_in_group())
730
    return EVENT_SKIP_IGNORE;
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  else if (rli->slave_skip_counter > 0)
    return EVENT_SKIP_COUNT;
  else
734
    return EVENT_SKIP_NOT;
735
}
736

737

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/*
739
  Log_event::pack_info()
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*/
741

742
void Log_event::pack_info(Protocol *protocol)
743
{
744
  protocol->store("", &my_charset_bin);
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}


748
/**
749
  Only called by SHOW BINLOG EVENTS
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*/
751
int Log_event::net_send(Protocol *protocol, const char* log_name, my_off_t pos)
752
{
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  const char *p= strrchr(log_name, FN_LIBCHAR);
  const char *event_type;
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  if (p)
    log_name = p + 1;
757

758
  protocol->prepare_for_resend();
759
  protocol->store(log_name, &my_charset_bin);
760
  protocol->store((ulonglong) pos);
761
  event_type = get_type_str();
762
  protocol->store(event_type, strlen(event_type), &my_charset_bin);
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  protocol->store((uint32) server_id);
  protocol->store((ulonglong) log_pos);
  pack_info(protocol);
  return protocol->write();
767
}
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#endif /* HAVE_REPLICATION */


771 772 773 774
/**
  init_show_field_list() prepares the column names and types for the
  output of SHOW BINLOG EVENTS; it is used only by SHOW BINLOG
  EVENTS.
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*/
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void Log_event::init_show_field_list(List<Item>* field_list)
{
  field_list->push_back(new Item_empty_string("Log_name", 20));
780
  field_list->push_back(new Item_return_int("Pos", MY_INT32_NUM_DECIMAL_DIGITS,
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					    MYSQL_TYPE_LONGLONG));
  field_list->push_back(new Item_empty_string("Event_type", 20));
  field_list->push_back(new Item_return_int("Server_id", 10,
					    MYSQL_TYPE_LONG));
785 786
  field_list->push_back(new Item_return_int("End_log_pos",
                                            MY_INT32_NUM_DECIMAL_DIGITS,
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					    MYSQL_TYPE_LONGLONG));
  field_list->push_back(new Item_empty_string("Info", 20));
}

791

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/*
793
  Log_event::write()
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*/
795

796
bool Log_event::write_header(IO_CACHE* file, ulong event_data_length)
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{
798
  uchar header[LOG_EVENT_HEADER_LEN];
799
  ulong now;
800
  DBUG_ENTER("Log_event::write_header");
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802 803
  /* Store number of bytes that will be written by this event */
  data_written= event_data_length + sizeof(header);
804

805 806 807 808
  /*
    log_pos != 0 if this is relay-log event. In this case we should not
    change the position
  */
809

810 811 812
  if (is_artificial_event())
  {
    /*
813 814
      Artificial events are automatically generated and do not exist
      in master's binary log, so log_pos should be set to 0.
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    */
    log_pos= 0;
  }
  else  if (!log_pos)
  {
    /*
      Calculate position of end of event

      Note that with a SEQ_READ_APPEND cache, my_b_tell() does not
      work well.  So this will give slightly wrong positions for the
      Format_desc/Rotate/Stop events which the slave writes to its
      relay log. For example, the initial Format_desc will have
      end_log_pos=91 instead of 95. Because after writing the first 4
      bytes of the relay log, my_b_tell() still reports 0. Because
      my_b_append() does not update the counter which my_b_tell()
      later uses (one should probably use my_b_append_tell() to work
      around this).  To get right positions even when writing to the
      relay log, we use the (new) my_b_safe_tell().

      Note that this raises a question on the correctness of all these
      DBUG_ASSERT(my_b_tell()=rli->event_relay_log_pos).

      If in a transaction, the log_pos which we calculate below is not
      very good (because then my_b_safe_tell() returns start position
      of the BEGIN, so it's like the statement was at the BEGIN's
      place), but it's not a very serious problem (as the slave, when
      it is in a transaction, does not take those end_log_pos into
      account (as it calls inc_event_relay_log_pos()). To be fixed
      later, so that it looks less strange. But not bug.
    */

    log_pos= my_b_safe_tell(file)+data_written;
  }

849
  now= (ulong) get_time();                              // Query start time
850

851 852 853 854 855 856 857
  /*
    Header will be of size LOG_EVENT_HEADER_LEN for all events, except for
    FORMAT_DESCRIPTION_EVENT and ROTATE_EVENT, where it will be
    LOG_EVENT_MINIMAL_HEADER_LEN (remember these 2 have a frozen header,
    because we read them before knowing the format).
  */

858
  int4store(header, now);              // timestamp
859 860 861 862 863 864 865
  header[EVENT_TYPE_OFFSET]= get_type_code();
  int4store(header+ SERVER_ID_OFFSET, server_id);
  int4store(header+ EVENT_LEN_OFFSET, data_written);
  int4store(header+ LOG_POS_OFFSET, log_pos);
  int2store(header+ FLAGS_OFFSET, flags);

  DBUG_RETURN(my_b_safe_write(file, header, sizeof(header)) != 0);
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}


869
/**
870 871
  This needn't be format-tolerant, because we only read
  LOG_EVENT_MINIMAL_HEADER_LEN (we just want to read the event's length).
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*/
873

874
int Log_event::read_log_event(IO_CACHE* file, String* packet,
875
			      pthread_mutex_t* log_lock)
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{
  ulong data_len;
878
  int result=0;
879
  char buf[LOG_EVENT_MINIMAL_HEADER_LEN];
880
  DBUG_ENTER("Log_event::read_log_event");
881

882
  if (log_lock)
883
    pthread_mutex_lock(log_lock);
884
  if (my_b_read(file, (uchar*) buf, sizeof(buf)))
885
  {
886 887 888 889 890
    /*
      If the read hits eof, we must report it as eof so the caller
      will know it can go into cond_wait to be woken up on the next
      update to the log.
    */
891
    DBUG_PRINT("error",("file->error: %d", file->error));
892 893 894
    if (!file->error)
      result= LOG_READ_EOF;
    else
895
      result= (file->error > 0 ? LOG_READ_TRUNC : LOG_READ_IO);
896
    goto end;
897
  }
898
  data_len= uint4korr(buf + EVENT_LEN_OFFSET);
899
  if (data_len < LOG_EVENT_MINIMAL_HEADER_LEN ||
900
      data_len > current_thd->variables.max_allowed_packet)
901
  {
902
    DBUG_PRINT("error",("data_len: %ld", data_len));
903
    result= ((data_len < LOG_EVENT_MINIMAL_HEADER_LEN) ? LOG_READ_BOGUS :
904 905
	     LOG_READ_TOO_LARGE);
    goto end;
906
  }
907 908 909 910 911 912 913 914

  /* Append the log event header to packet */
  if (packet->append(buf, sizeof(buf)))
  {
    /* Failed to allocate packet */
    result= LOG_READ_MEM;
    goto end;
  }
915
  data_len-= LOG_EVENT_MINIMAL_HEADER_LEN;
916 917
  if (data_len)
  {
918
    /* Append rest of event, read directly from file into packet */
919
    if (packet->append(file, data_len))
920
    {
921
      /*
922 923 924 925 926 927 928 929 930 931
        Fatal error occured when appending rest of the event
        to packet, possible failures:
	1. EOF occured when reading from file, it's really an error
           as data_len is >=0 there's supposed to be more bytes available.
           file->error will have been set to number of bytes left to read
        2. Read was interrupted, file->error would normally be set to -1
        3. Failed to allocate memory for packet, my_errno
           will be ENOMEM(file->error shuold be 0, but since the
           memory allocation occurs before the call to read it might
           be uninitialized)
932
      */
933 934
      result= (my_errno == ENOMEM ? LOG_READ_MEM :
               (file->error >= 0 ? LOG_READ_TRUNC: LOG_READ_IO));
935
      /* Implicit goto end; */
936
    }
937
  }
938 939 940 941

end:
  if (log_lock)
    pthread_mutex_unlock(log_lock);
942
  DBUG_RETURN(result);
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}
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#endif /* !MYSQL_CLIENT */
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946
#ifndef MYSQL_CLIENT
947 948
#define UNLOCK_MUTEX if (log_lock) pthread_mutex_unlock(log_lock);
#define LOCK_MUTEX if (log_lock) pthread_mutex_lock(log_lock);
949
#else
950
#define UNLOCK_MUTEX
951 952 953
#define LOCK_MUTEX
#endif

954 955 956
#ifndef MYSQL_CLIENT
/**
  @note
957
    Allocates memory;  The caller is responsible for clean-up.
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*/
959 960
Log_event* Log_event::read_log_event(IO_CACHE* file,
				     pthread_mutex_t* log_lock,
961 962
                                     const Format_description_log_event
                                     *description_event)
963
#else
964
Log_event* Log_event::read_log_event(IO_CACHE* file,
965 966
                                     const Format_description_log_event
                                     *description_event)
967
#endif
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{
969
  DBUG_ENTER("Log_event::read_log_event");
970
  DBUG_ASSERT(description_event != 0);
971 972 973 974 975
  char head[LOG_EVENT_MINIMAL_HEADER_LEN];
  /*
    First we only want to read at most LOG_EVENT_MINIMAL_HEADER_LEN, just to
    check the event for sanity and to know its length; no need to really parse
    it. We say "at most" because this could be a 3.23 master, which has header
976 977
    of 13 bytes, whereas LOG_EVENT_MINIMAL_HEADER_LEN is 19 bytes (it's
    "minimal" over the set {MySQL >=4.0}).
978 979 980
  */
  uint header_size= min(description_event->common_header_len,
                        LOG_EVENT_MINIMAL_HEADER_LEN);
981

982
  LOCK_MUTEX;
983
  DBUG_PRINT("info", ("my_b_tell: %lu", (ulong) my_b_tell(file)));
984
  if (my_b_read(file, (uchar *) head, header_size))
985
  {
986 987
    DBUG_PRINT("info", ("Log_event::read_log_event(IO_CACHE*,Format_desc*) \
failed my_b_read"));
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    UNLOCK_MUTEX;
989
    /*
990 991 992
      No error here; it could be that we are at the file's end. However
      if the next my_b_read() fails (below), it will be an error as we
      were able to read the first bytes.
993
    */
994
    DBUG_RETURN(0);
995
  }
996
  uint data_len = uint4korr(head + EVENT_LEN_OFFSET);
997 998 999
  char *buf= 0;
  const char *error= 0;
  Log_event *res=  0;
1000 1001
#ifndef max_allowed_packet
  THD *thd=current_thd;
1002
  uint max_allowed_packet= thd ? thd->variables.max_allowed_packet : ~(ulong)0;
1003
#endif
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1005
  if (data_len > max_allowed_packet)
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  {
1007 1008
    error = "Event too big";
    goto err;
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  }

1011
  if (data_len < header_size)
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  {
1013 1014
    error = "Event too small";
    goto err;
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  }
1016 1017

  // some events use the extra byte to null-terminate strings
1018
  if (!(buf = (char*) my_malloc(data_len+1, MYF(MY_WME))))
1019 1020 1021
  {
    error = "Out of memory";
    goto err;
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  }
1023
  buf[data_len] = 0;
1024
  memcpy(buf, head, header_size);
1025
  if (my_b_read(file, (uchar*) buf + header_size, data_len - header_size))
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  {
    error = "read error";
    goto err;
  }
1030
  if ((res= read_log_event(buf, data_len, &error, description_event)))
1031
    res->register_temp_buf(buf);
1032

1033
err:
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1034
  UNLOCK_MUTEX;
1035
  if (!res)
1036
  {
1037
    DBUG_ASSERT(error != 0);
1038 1039
    sql_print_error("Error in Log_event::read_log_event(): "
                    "'%s', data_len: %d, event_type: %d",
1040
		    error,data_len,head[EVENT_TYPE_OFFSET]);
1041
    my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
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    /*
      The SQL slave thread will check if file->error<0 to know
      if there was an I/O error. Even if there is no "low-level" I/O errors
      with 'file', any of the high-level above errors is worrying
      enough to stop the SQL thread now ; as we are skipping the current event,
      going on with reading and successfully executing other events can
      only corrupt the slave's databases. So stop.
    */
    file->error= -1;
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  }
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  DBUG_RETURN(res);
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}

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/**
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  Binlog format tolerance is in (buf, event_len, description_event)
  constructors.
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*/
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Log_event* Log_event::read_log_event(const char* buf, uint event_len,
				     const char **error,
                                     const Format_description_log_event *description_event)
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{
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  Log_event* ev;
  DBUG_ENTER("Log_event::read_log_event(char*,...)");
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  DBUG_ASSERT(description_event != 0);
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  DBUG_PRINT("info", ("binlog_version: %d", description_event->binlog_version));
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  DBUG_DUMP("data", (unsigned char*) buf, event_len);

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  /* Check the integrity */
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  if (event_len < EVENT_LEN_OFFSET ||
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      buf[EVENT_TYPE_OFFSET] >= ENUM_END_EVENT ||
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      (uint) event_len != uint4korr(buf+EVENT_LEN_OFFSET))
  {
    *error="Sanity check failed";		// Needed to free buffer
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    DBUG_RETURN(NULL); // general sanity check - will fail on a partial read
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  }
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  uint event_type= buf[EVENT_TYPE_OFFSET];
  if (event_type > description_event->number_of_event_types &&
      event_type != FORMAT_DESCRIPTION_EVENT)
  {
    /*
      It is unsafe to use the description_event if its post_header_len
      array does not include the event type.
    */
    DBUG_PRINT("error", ("event type %d found, but the current "
                         "Format_description_log_event supports only %d event "
                         "types", event_type,
                         description_event->number_of_event_types));
    ev= NULL;
  }
  else
  {
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    /*
      In some previuos versions (see comment in
      Format_description_log_event::Format_description_log_event(char*,...)),
      event types were assigned different id numbers than in the
      present version. In order to replicate from such versions to the
      present version, we must map those event type id's to our event
      type id's.  The mapping is done with the event_type_permutation
      array, which was set up when the Format_description_log_event
      was read.
    */
    if (description_event->event_type_permutation)
    {
      IF_DBUG({
          int new_event_type=
            description_event->event_type_permutation[event_type];
          DBUG_PRINT("info",
                     ("converting event type %d to %d (%s)",
                      event_type, new_event_type,
                      get_type_str((Log_event_type)new_event_type)));
        });
      event_type= description_event->event_type_permutation[event_type];
    }

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    switch(event_type) {
    case QUERY_EVENT:
      ev  = new Query_log_event(buf, event_len, description_event, QUERY_EVENT);
      break;
    case LOAD_EVENT:
      ev = new Load_log_event(buf, event_len, description_event);
      break;
    case NEW_LOAD_EVENT:
      ev = new Load_log_event(buf, event_len, description_event);
      break;
    case ROTATE_EVENT:
      ev = new Rotate_log_event(buf, event_len, description_event);
      break;
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#ifdef HAVE_REPLICATION
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    case SLAVE_EVENT: /* can never happen (unused event) */
      ev = new Slave_log_event(buf, event_len);
      break;
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#endif /* HAVE_REPLICATION */
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    case CREATE_FILE_EVENT:
      ev = new Create_file_log_event(buf, event_len, description_event);
      break;
    case APPEND_BLOCK_EVENT:
      ev = new Append_block_log_event(buf, event_len, description_event);
      break;
    case DELETE_FILE_EVENT:
      ev = new Delete_file_log_event(buf, event_len, description_event);
      break;
    case EXEC_LOAD_EVENT:
      ev = new Execute_load_log_event(buf, event_len, description_event);
      break;
    case START_EVENT_V3: /* this is sent only by MySQL <=4.x */
      ev = new Start_log_event_v3(buf, description_event);
      break;
    case STOP_EVENT:
      ev = new Stop_log_event(buf, description_event);
      break;
    case INTVAR_EVENT:
      ev = new Intvar_log_event(buf, description_event);
      break;
    case XID_EVENT:
      ev = new Xid_log_event(buf, description_event);
      break;
    case RAND_EVENT:
      ev = new Rand_log_event(buf, description_event);
      break;
    case USER_VAR_EVENT:
      ev = new User_var_log_event(buf, description_event);
      break;
    case FORMAT_DESCRIPTION_EVENT:
      ev = new Format_description_log_event(buf, event_len, description_event);
      break;
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#if defined(HAVE_REPLICATION) 
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    case PRE_GA_WRITE_ROWS_EVENT:
      ev = new Write_rows_log_event_old(buf, event_len, description_event);
      break;
    case PRE_GA_UPDATE_ROWS_EVENT:
      ev = new Update_rows_log_event_old(buf, event_len, description_event);
      break;
    case PRE_GA_DELETE_ROWS_EVENT:
      ev = new Delete_rows_log_event_old(buf, event_len, description_event);
      break;
    case WRITE_ROWS_EVENT:
      ev = new Write_rows_log_event(buf, event_len, description_event);
      break;
    case UPDATE_ROWS_EVENT:
      ev = new Update_rows_log_event(buf, event_len, description_event);
      break;
    case DELETE_ROWS_EVENT:
      ev = new Delete_rows_log_event(buf, event_len, description_event);
      break;
    case TABLE_MAP_EVENT:
      ev = new Table_map_log_event(buf, event_len, description_event);
      break;
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#endif
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    case BEGIN_LOAD_QUERY_EVENT:
      ev = new Begin_load_query_log_event(buf, event_len, description_event);
      break;
    case EXECUTE_LOAD_QUERY_EVENT:
      ev= new Execute_load_query_log_event(buf, event_len, description_event);
      break;
    case INCIDENT_EVENT:
      ev = new Incident_log_event(buf, event_len, description_event);
      break;
    default:
      DBUG_PRINT("error",("Unknown event code: %d",
                          (int) buf[EVENT_TYPE_OFFSET]));
      ev= NULL;
      break;
    }
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  }
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  DBUG_PRINT("read_event", ("%s(type_code: %d; event_len: %d)",
                            ev ? ev->get_type_str() : "<unknown>",
                            buf[EVENT_TYPE_OFFSET],
                            event_len));
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  /*
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    is_valid() are small event-specific sanity tests which are
    important; for example there are some my_malloc() in constructors
    (e.g. Query_log_event::Query_log_event(char*...)); when these
    my_malloc() fail we can't return an error out of the constructor
    (because constructor is "void") ; so instead we leave the pointer we
    wanted to allocate (e.g. 'query') to 0 and we test it in is_valid().
    Same for Format_description_log_event, member 'post_header_len'.
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  */
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  if (!ev || !ev->is_valid())
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  {
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    DBUG_PRINT("error",("Found invalid event in binary log"));

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    delete ev;
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#ifdef MYSQL_CLIENT
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    if (!force_opt) /* then mysqlbinlog dies */
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    {
      *error= "Found invalid event in binary log";
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      DBUG_RETURN(0);
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    }
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    ev= new Unknown_log_event(buf, description_event);
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#else
    *error= "Found invalid event in binary log";
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    DBUG_RETURN(0);
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#endif
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  }
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  DBUG_RETURN(ev);  
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}

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#ifdef MYSQL_CLIENT
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/*
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  Log_event::print_header()
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*/
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void Log_event::print_header(IO_CACHE* file,
                             PRINT_EVENT_INFO* print_event_info,
                             bool is_more __attribute__((unused)))
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{
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  char llbuff[22];
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  my_off_t hexdump_from= print_event_info->hexdump_from;
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  DBUG_ENTER("Log_event::print_header");
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  my_b_printf(file, "#");
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  print_timestamp(file);
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  my_b_printf(file, " server id %d  end_log_pos %s ", server_id,
              llstr(log_pos,llbuff));
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  /* mysqlbinlog --hexdump */
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  if (print_event_info->hexdump_from)
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  {
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    my_b_printf(file, "\n");
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    uchar *ptr= (uchar*)temp_buf;
    my_off_t size=
      uint4korr(ptr + EVENT_LEN_OFFSET) - LOG_EVENT_MINIMAL_HEADER_LEN;
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    my_off_t i;

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    /* Header len * 4 >= header len * (2 chars + space + extra space) */
    char *h, hex_string[LOG_EVENT_MINIMAL_HEADER_LEN*4]= {0};
    char *c, char_string[16+1]= {0};

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    /* Pretty-print event common header if header is exactly 19 bytes */
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    if (print_event_info->common_header_len == LOG_EVENT_MINIMAL_HEADER_LEN)
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    {
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      char emit_buf[256];               // Enough for storing one line
      my_b_printf(file, "# Position  Timestamp   Type   Master ID        "
                  "Size      Master Pos    Flags \n");
      int const bytes_written=
        my_snprintf(emit_buf, sizeof(emit_buf),
                    "# %8.8lx %02x %02x %02x %02x   %02x   "
                    "%02x %02x %02x %02x   %02x %02x %02x %02x   "
                    "%02x %02x %02x %02x   %02x %02x\n",
                    (unsigned long) hexdump_from,
                    ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5], ptr[6],
                    ptr[7], ptr[8], ptr[9], ptr[10], ptr[11], ptr[12], ptr[13],
                    ptr[14], ptr[15], ptr[16], ptr[17], ptr[18]);
      DBUG_ASSERT(bytes_written >= 0);
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      DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf));
      my_b_write(file, (uchar*) emit_buf, bytes_written);
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      ptr += LOG_EVENT_MINIMAL_HEADER_LEN;
      hexdump_from += LOG_EVENT_MINIMAL_HEADER_LEN;
    }
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    /* Rest of event (without common header) */
    for (i= 0, c= char_string, h=hex_string;
	 i < size;
	 i++, ptr++)
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    {
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      my_snprintf(h, 4, "%02x ", *ptr);
      h += 3;
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      *c++= my_isalnum(&my_charset_bin, *ptr) ? *ptr : '.';
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      if (i % 16 == 15)
      {
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        /*
          my_b_printf() does not support full printf() formats, so we
          have to do it this way.

          TODO: Rewrite my_b_printf() to support full printf() syntax.
         */
        char emit_buf[256];
        int const bytes_written=
          my_snprintf(emit_buf, sizeof(emit_buf),
                      "# %8.8lx %-48.48s |%16s|\n",
                      (unsigned long) (hexdump_from + (i & 0xfffffff0)),
                      hex_string, char_string);
        DBUG_ASSERT(bytes_written >= 0);
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        DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf));
	my_b_write(file, (uchar*) emit_buf, bytes_written);
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	hex_string[0]= 0;
	char_string[0]= 0;
	c= char_string;
	h= hex_string;
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      }
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      else if (i % 8 == 7) *h++ = ' ';
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    }
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    *c= '\0';
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1333
    if (hex_string[0])
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    {
      char emit_buf[256];
      int const bytes_written=
        my_snprintf(emit_buf, sizeof(emit_buf),
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                    "# %8.8lx %-48.48s |%s|\n",
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                    (unsigned long) (hexdump_from + (i & 0xfffffff0)),
                    hex_string, char_string);
      DBUG_ASSERT(bytes_written >= 0);
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      DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf));
      my_b_write(file, (uchar*) emit_buf, bytes_written);
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    }
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    /*
      need a # to prefix the rest of printouts for example those of
      Rows_log_event::print_helper().
    */
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    my_b_write(file, reinterpret_cast<const uchar*>("# "), 2);
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  }
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  DBUG_VOID_RETURN;
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}

1354

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/**
  Prints a quoted string to io cache.
  Control characters are displayed as hex sequence, e.g. \x00
  
  @param[in] file              IO cache
  @param[in] prt               Pointer to string
  @param[in] length            String length
*/

static void
my_b_write_quoted(IO_CACHE *file, const uchar *ptr, uint length)
{
  const uchar *s;
  my_b_printf(file, "'");
  for (s= ptr; length > 0 ; s++, length--)
  {
    if (*s > 0x1F)
      my_b_write(file, s, 1);
    else
    {
      uchar hex[10];
      size_t len= my_snprintf((char*) hex, sizeof(hex), "%s%02x", "\\x", *s);
      my_b_write(file, hex, len);
    }
  }
  my_b_printf(file, "'");
}


/**
  Prints a bit string to io cache in format  b'1010'.
  
  @param[in] file              IO cache
  @param[in] ptr               Pointer to string
  @param[in] nbits             Number of bits
*/
static void
my_b_write_bit(IO_CACHE *file, const uchar *ptr, uint nbits)
{
  uint bitnum, nbits8= ((nbits + 7) / 8) * 8, skip_bits= nbits8 - nbits;
  my_b_printf(file, "b'");
  for (bitnum= skip_bits ; bitnum < nbits8; bitnum++)
  {
    int is_set= (ptr[(bitnum) / 8] >> (7 - bitnum % 8))  & 0x01;
    my_b_write(file, (const uchar*) (is_set ? "1" : "0"), 1);
  }
  my_b_printf(file, "'");
}


/**
  Prints a packed string to io cache.
  The string consists of length packed to 1 or 2 bytes,
  followed by string data itself.
  
  @param[in] file              IO cache
  @param[in] ptr               Pointer to string
  @param[in] length            String size
  
  @retval   - number of bytes scanned.
*/
static size_t
my_b_write_quoted_with_length(IO_CACHE *file, const uchar *ptr, uint length)
{
  if (length < 256)
  {
    length= *ptr;
    my_b_write_quoted(file, ptr + 1, length);
    return length + 1;
  }
  else
  {
    length= uint2korr(ptr);
    my_b_write_quoted(file, ptr + 2, length);
    return length + 2;
  }
}


/**
  Prints a 32-bit number in both signed and unsigned representation
  
  @param[in] file              IO cache
  @param[in] sl                Signed number
  @param[in] ul                Unsigned number
*/
static void
my_b_write_sint32_and_uint32(IO_CACHE *file, int32 si, uint32 ui)
{
  my_b_printf(file, "%d", si);
  if (si < 0)
    my_b_printf(file, " (%u)", ui);
}


/**
  Print a packed value of the given SQL type into IO cache
  
  @param[in] file              IO cache
  @param[in] ptr               Pointer to string
  @param[in] type              Column type
  @param[in] meta              Column meta information
  @param[out] typestr          SQL type string buffer (for verbose output)
  @param[out] typestr_length   Size of typestr
  
  @retval   - number of bytes scanned from ptr.
*/

static size_t
log_event_print_value(IO_CACHE *file, const uchar *ptr,
                      uint type, uint meta,
                      char *typestr, size_t typestr_length)
{
  uint32 length= 0;

  if (type == MYSQL_TYPE_STRING)
  {
    if (meta >= 256)
    {
      uint byte0= meta >> 8;
      uint byte1= meta & 0xFF;
      
      if ((byte0 & 0x30) != 0x30)
      {
        /* a long CHAR() field: see #37426 */
        length= byte1 | (((byte0 & 0x30) ^ 0x30) << 4);
        type= byte0 | 0x30;
        goto beg;
      }

      switch (byte0)
      {
        case MYSQL_TYPE_SET:
        case MYSQL_TYPE_ENUM:
        case MYSQL_TYPE_STRING:
          type= byte0;
          length= byte1;
          break;

        default:

        {
          char tmp[5];
          my_snprintf(tmp, sizeof(tmp), "%04X", meta);
          my_b_printf(file,
                      "!! Don't know how to handle column type=%d meta=%d (%s)",
                      type, meta, tmp);
          return 0;
        }
      }
    }
    else
      length= meta;
  }


beg:
  
  switch (type) {
  case MYSQL_TYPE_LONG:
    {
      int32 si= sint4korr(ptr);
      uint32 ui= uint4korr(ptr);
      my_b_write_sint32_and_uint32(file, si, ui);
      my_snprintf(typestr, typestr_length, "INT");
      return 4;
    }

  case MYSQL_TYPE_TINY:
    {
      my_b_write_sint32_and_uint32(file, (int) (signed char) *ptr,
                                  (uint) (unsigned char) *ptr);
      my_snprintf(typestr, typestr_length, "TINYINT");
      return 1;
    }

  case MYSQL_TYPE_SHORT:
    {
      int32 si= (int32) sint2korr(ptr);
      uint32 ui= (uint32) uint2korr(ptr);
      my_b_write_sint32_and_uint32(file, si, ui);
      my_snprintf(typestr, typestr_length, "SHORTINT");
      return 2;
    }
  
  case MYSQL_TYPE_INT24:
    {
      int32 si= sint3korr(ptr);
      uint32 ui= uint3korr(ptr);
      my_b_write_sint32_and_uint32(file, si, ui);
      my_snprintf(typestr, typestr_length, "MEDIUMINT");
      return 3;
    }

  case MYSQL_TYPE_LONGLONG:
    {
      char tmp[64];
      longlong si= sint8korr(ptr);
      longlong10_to_str(si, tmp, -10);
      my_b_printf(file, "%s", tmp);
      if (si < 0)
      {
        ulonglong ui= uint8korr(ptr);
        longlong10_to_str((longlong) ui, tmp, 10);
        my_b_printf(file, " (%s)", tmp);        
      }
      my_snprintf(typestr, typestr_length, "LONGINT");
      return 8;
    }

  case MYSQL_TYPE_NEWDECIMAL:
    {
      uint precision= meta >> 8;
      uint decimals= meta & 0xFF;
      uint bin_size= my_decimal_get_binary_size(precision, decimals);
      my_decimal dec;
      binary2my_decimal(E_DEC_FATAL_ERROR, (uchar*) ptr, &dec,
                        precision, decimals);
      int i, end;
      char buff[512], *pos;
      pos= buff;
      pos+= my_sprintf(buff, (buff, "%s", dec.sign() ? "-" : ""));
      end= ROUND_UP(dec.frac) + ROUND_UP(dec.intg)-1;
      for (i=0; i < end; i++)
        pos+= my_sprintf(pos, (pos, "%09d.", dec.buf[i]));
      pos+= my_sprintf(pos, (pos, "%09d", dec.buf[i]));
      my_b_printf(file, "%s", buff);
      my_snprintf(typestr, typestr_length, "DECIMAL(%d,%d)",
                  precision, decimals);
      return bin_size;
    }
    
  case MYSQL_TYPE_FLOAT:
    {
      float fl;
      float4get(fl, ptr);
      char tmp[320];
      sprintf(tmp, "%-20g", (double) fl);
      my_b_printf(file, "%s", tmp); /* my_snprintf doesn't support %-20g */
      my_snprintf(typestr, typestr_length, "FLOAT");
      return 4;
    }

  case MYSQL_TYPE_DOUBLE:
    {
      double dbl;
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      float8get(dbl, ptr);
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      char tmp[320];
      sprintf(tmp, "%-.20g", dbl); /* my_snprintf doesn't support %-20g */
      my_b_printf(file, "%s", tmp);
      strcpy(typestr, "DOUBLE");
      return 8;
    }
  
  case MYSQL_TYPE_BIT:
    {
      /* Meta-data: bit_len, bytes_in_rec, 2 bytes */
      uint nbits= ((meta >> 8) * 8) + (meta & 0xFF);
      length= (nbits + 7) / 8;
      my_b_write_bit(file, ptr, nbits);
      my_snprintf(typestr, typestr_length, "BIT(%d)", nbits);
      return length;
    }

  case MYSQL_TYPE_TIMESTAMP:
    {
      uint32 i32= uint4korr(ptr);
      my_b_printf(file, "%d", i32);
      my_snprintf(typestr, typestr_length, "TIMESTAMP");
      return 4;
    }

  case MYSQL_TYPE_DATETIME:
    {
      uint d, t;
      uint64 i64= uint8korr(ptr); /* YYYYMMDDhhmmss */
      d= i64 / 1000000;
      t= i64 % 1000000;
      my_b_printf(file, "%04d-%02d-%02d %02d:%02d:%02d",
                  d / 10000, (d % 10000) / 100, d % 100,
                  t / 10000, (t % 10000) / 100, t % 100);
      my_snprintf(typestr, typestr_length, "DATETIME");
      return 8;
    }

  case MYSQL_TYPE_TIME:
    {
      uint32 i32= uint3korr(ptr);
      my_b_printf(file, "'%02d:%02d:%02d'",
                  i32 / 10000, (i32 % 10000) / 100, i32 % 100);
      my_snprintf(typestr,  typestr_length, "TIME");
      return 3;
    }
    
  case MYSQL_TYPE_DATE:
    {
      uint i32= uint3korr(ptr);
      my_b_printf(file , "'%04d:%02d:%02d'",
                  (i32 / (16L * 32L)), (i32 / 32L % 16L), (i32 % 32L));
      my_snprintf(typestr, typestr_length, "DATE");
      return 3;
    }
  
  case MYSQL_TYPE_YEAR:
    {
      uint32 i32= *ptr;
      my_b_printf(file, "%04d", i32+ 1900);
      my_snprintf(typestr, typestr_length, "YEAR");
      return 1;
    }
  
  case MYSQL_TYPE_ENUM:
    switch (length) { 
    case 1:
      my_b_printf(file, "%d", (int) *ptr);
      my_snprintf(typestr, typestr_length, "ENUM(1 byte)");
      return 1;
    case 2:
      {
        int32 i32= uint2korr(ptr);
        my_b_printf(file, "%d", i32);
        my_snprintf(typestr, typestr_length, "ENUM(2 bytes)");
        return 2;
      }
    default:
      my_b_printf(file, "!! Unknown ENUM packlen=%d", length); 
      return 0;
    }
    break;
    
  case MYSQL_TYPE_SET:
    my_b_write_bit(file, ptr , length * 8);
    my_snprintf(typestr, typestr_length, "SET(%d bytes)", length);
    return length;
  
  case MYSQL_TYPE_BLOB:
    switch (meta) {
    case 1:
      length= *ptr;
      my_b_write_quoted(file, ptr + 1, length);
      my_snprintf(typestr, typestr_length, "TINYBLOB/TINYTEXT");
      return length + 1;
    case 2:
      length= uint2korr(ptr);
      my_b_write_quoted(file, ptr + 2, length);
      my_snprintf(typestr, typestr_length, "BLOB/TEXT");
      return length + 2;
    case 3:
      length= uint3korr(ptr);
      my_b_write_quoted(file, ptr + 3, length);
      my_snprintf(typestr, typestr_length, "MEDIUMBLOB/MEDIUMTEXT");
      return length + 3;
    case 4:
      length= uint4korr(ptr);
      my_b_write_quoted(file, ptr + 4, length);
      my_snprintf(typestr, typestr_length, "LONGBLOB/LONGTEXT");
      return length + 4;
    default:
      my_b_printf(file, "!! Unknown BLOB packlen=%d", length);
      return 0;
    }

  case MYSQL_TYPE_VARCHAR:
  case MYSQL_TYPE_VAR_STRING:
    length= meta;
    my_snprintf(typestr, typestr_length, "VARSTRING(%d)", length);
    return my_b_write_quoted_with_length(file, ptr, length);

  case MYSQL_TYPE_STRING:
    my_snprintf(typestr, typestr_length, "STRING(%d)", length);
    return my_b_write_quoted_with_length(file, ptr, length);

  default:
    {
      char tmp[5];
      my_snprintf(tmp, sizeof(tmp), "%04x", meta);
      my_b_printf(file,
                  "!! Don't know how to handle column type=%d meta=%d (%s)",
                  type, meta, tmp);
    }
    break;
  }
  *typestr= 0;
  return 0;
}


/**
  Print a packed row into IO cache
  
  @param[in] file              IO cache
  @param[in] td                Table definition
  @param[in] print_event_into  Print parameters
  @param[in] cols_bitmap       Column bitmaps.
  @param[in] value             Pointer to packed row
  @param[in] prefix            Row's SQL clause ("SET", "WHERE", etc)
  
  @retval   - number of bytes scanned.
*/


size_t
Rows_log_event::print_verbose_one_row(IO_CACHE *file, table_def *td,
                                      PRINT_EVENT_INFO *print_event_info,
                                      MY_BITMAP *cols_bitmap,
                                      const uchar *value, const uchar *prefix)
{
  const uchar *value0= value;
  const uchar *null_bits= value;
  char typestr[64]= "";
  
  value+= (m_width + 7) / 8;
  
  my_b_printf(file, "%s", prefix);
  
  for (size_t i= 0; i < td->size(); i ++)
  {
    int is_null= (null_bits[i / 8] >> (i % 8))  & 0x01;

    if (bitmap_is_set(cols_bitmap, i) == 0)
      continue;
    
    if (is_null)
    {
      my_b_printf(file, "###   @%d=NULL", i + 1);
    }
    else
    {
      my_b_printf(file, "###   @%d=", i + 1);
      size_t size= log_event_print_value(file, value,
                                         td->type(i), td->field_metadata(i),
                                         typestr, sizeof(typestr));
      if (!size)
        return 0;

      value+= size;
    }

    if (print_event_info->verbose > 1)
    {
      my_b_printf(file, " /* ");

      if (typestr[0])
        my_b_printf(file, "%s ", typestr);
      else
        my_b_printf(file, "type=%d ", td->type(i));
      
      my_b_printf(file, "meta=%d nullable=%d is_null=%d ",
                  td->field_metadata(i),
                  td->maybe_null(i), is_null);
      my_b_printf(file, "*/");
    }
    
    my_b_printf(file, "\n");
  }
  return value - value0;
}


/**
  Print a row event into IO cache in human readable form (in SQL format)
  
  @param[in] file              IO cache
  @param[in] print_event_into  Print parameters
*/
void Rows_log_event::print_verbose(IO_CACHE *file,
                                   PRINT_EVENT_INFO *print_event_info)
{
  Table_map_log_event *map;
  table_def *td;
  const char *sql_command, *sql_clause1, *sql_clause2;
  Log_event_type type_code= get_type_code();
  
  switch (type_code) {
  case WRITE_ROWS_EVENT:
    sql_command= "INSERT INTO";
    sql_clause1= "### SET\n";
    sql_clause2= NULL;
    break;
  case DELETE_ROWS_EVENT:
    sql_command= "DELETE FROM";
    sql_clause1= "### WHERE\n";
    sql_clause2= NULL;
    break;
  case UPDATE_ROWS_EVENT:
    sql_command= "UPDATE";
    sql_clause1= "### WHERE\n";
    sql_clause2= "### SET\n";
    break;
  default:
    sql_command= sql_clause1= sql_clause2= NULL;
    DBUG_ASSERT(0); /* Not possible */
  }
  
  if (!(map= print_event_info->m_table_map.get_table(m_table_id)) ||
      !(td= map->create_table_def()))
  {
    my_b_printf(file, "### Row event for unknown table #%d", m_table_id);
    return;
  }

  for (const uchar *value= m_rows_buf; value < m_rows_end; )
  {
    size_t length;
    my_b_printf(file, "### %s %s.%s\n",
                      sql_command,
                      map->get_db_name(), map->get_table_name());
    /* Print the first image */
    if (!(length= print_verbose_one_row(file, td, print_event_info,
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                                  &m_cols, value,
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                                  (const uchar*) sql_clause1)))
      goto end;
    value+= length;

    /* Print the second image (for UPDATE only) */
    if (sql_clause2)
    {
      if (!(length= print_verbose_one_row(file, td, print_event_info,
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                                      &m_cols_ai, value,
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                                      (const uchar*) sql_clause2)))
        goto end;
      value+= length;
    }
  }

end:
  delete td;
}

#ifdef MYSQL_CLIENT
void free_table_map_log_event(Table_map_log_event *event)
{
  delete event;
}
#endif

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void Log_event::print_base64(IO_CACHE* file,
                             PRINT_EVENT_INFO* print_event_info,
                             bool more)
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{
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  const uchar *ptr= (const uchar *)temp_buf;
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  uint32 size= uint4korr(ptr + EVENT_LEN_OFFSET);
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  DBUG_ENTER("Log_event::print_base64");

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  size_t const tmp_str_sz= base64_needed_encoded_length((int) size);
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  char *const tmp_str= (char *) my_malloc(tmp_str_sz, MYF(MY_WME));
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  if (!tmp_str) {
    fprintf(stderr, "\nError: Out of memory. "
            "Could not print correct binlog event.\n");
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    DBUG_VOID_RETURN;
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  }
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  if (base64_encode(ptr, (size_t) size, tmp_str))
  {
    DBUG_ASSERT(0);
  }
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  if (print_event_info->base64_output_mode != BASE64_OUTPUT_DECODE_ROWS)
  {
    if (my_b_tell(file) == 0)
      my_b_printf(file, "\nBINLOG '\n");
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    my_b_printf(file, "%s\n", tmp_str);
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    if (!more)
      my_b_printf(file, "'%s\n", print_event_info->delimiter);
  }
  
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  if (print_event_info->verbose)
  {
    Rows_log_event *ev= NULL;
    
    if (ptr[4] == TABLE_MAP_EVENT)
    {
      Table_map_log_event *map; 
      map= new Table_map_log_event((const char*) ptr, size, 
                                   glob_description_event);
      print_event_info->m_table_map.set_table(map->get_table_id(), map);
    }
    else if (ptr[4] == WRITE_ROWS_EVENT)
    {
      ev= new Write_rows_log_event((const char*) ptr, size,
                                   glob_description_event);
    }
    else if (ptr[4] == DELETE_ROWS_EVENT)
    {
      ev= new Delete_rows_log_event((const char*) ptr, size,
                                    glob_description_event);
    }
    else if (ptr[4] == UPDATE_ROWS_EVENT)
    {
      ev= new Update_rows_log_event((const char*) ptr, size,
                                    glob_description_event);
    }
    
    if (ev)
    {
      ev->print_verbose(file, print_event_info);
      delete ev;
    }
  }
    
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  my_free(tmp_str, MYF(0));
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  DBUG_VOID_RETURN;
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}


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/*
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  Log_event::print_timestamp()
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*/
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void Log_event::print_timestamp(IO_CACHE* file, time_t* ts)
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{
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  struct tm *res;
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  DBUG_ENTER("Log_event::print_timestamp");
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  if (!ts)
    ts = &when;
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#ifdef MYSQL_SERVER				// This is always false
  struct tm tm_tmp;
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  localtime_r(ts,(res= &tm_tmp));
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#else
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  res=localtime(ts);
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#endif
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  my_b_printf(file,"%02d%02d%02d %2d:%02d:%02d",
              res->tm_year % 100,
              res->tm_mon+1,
              res->tm_mday,
              res->tm_hour,
              res->tm_min,
              res->tm_sec);
  DBUG_VOID_RETURN;
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}

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#endif /* MYSQL_CLIENT */
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#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
inline Log_event::enum_skip_reason
Log_event::continue_group(Relay_log_info *rli)
{
  if (rli->slave_skip_counter == 1)
    return Log_event::EVENT_SKIP_IGNORE;
  return Log_event::do_shall_skip(rli);
}
#endif

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/**************************************************************************
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	Query_log_event methods
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**************************************************************************/
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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/**
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  This (which is used only for SHOW BINLOG EVENTS) could be updated to
  print SET @@session_var=. But this is not urgent, as SHOW BINLOG EVENTS is
  only an information, it does not produce suitable queries to replay (for
  example it does not print LOAD DATA INFILE).
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  @todo
    show the catalog ??
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*/
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void Query_log_event::pack_info(Protocol *protocol)
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{
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  // TODO: show the catalog ??
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  char *buf, *pos;
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  if (!(buf= (char*) my_malloc(9 + db_len + q_len, MYF(MY_WME))))
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    return;
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  pos= buf;
  if (!(flags & LOG_EVENT_SUPPRESS_USE_F)
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      && db && db_len)
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  {
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    pos= strmov(buf, "use `");
    memcpy(pos, db, db_len);
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    pos= strmov(pos+db_len, "`; ");
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  }
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  if (query && q_len)
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  {
    memcpy(pos, query, q_len);
    pos+= q_len;
  }
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  protocol->store(buf, pos-buf, &my_charset_bin);
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  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
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}
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#endif
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#ifndef MYSQL_CLIENT
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/**
  Utility function for the next method (Query_log_event::write()) .
*/
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static void write_str_with_code_and_len(char **dst, const char *src,
                                        int len, uint code)
{
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  /*
    only 1 byte to store the length of catalog, so it should not
    surpass 255
  */
  DBUG_ASSERT(len <= 255);
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  DBUG_ASSERT(src);
  *((*dst)++)= code;
  *((*dst)++)= (uchar) len;
  bmove(*dst, src, len);
  (*dst)+= len;
}


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/**
  Query_log_event::write().
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  @note
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    In this event we have to modify the header to have the correct
    EVENT_LEN_OFFSET as we don't yet know how many status variables we
    will print!
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*/
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bool Query_log_event::write(IO_CACHE* file)
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{
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  uchar buf[QUERY_HEADER_LEN + MAX_SIZE_LOG_EVENT_STATUS];
  uchar *start, *start_of_status;
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  ulong event_length;
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  if (!query)
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    return 1;                                   // Something wrong with event

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  /*
    We want to store the thread id:
    (- as an information for the user when he reads the binlog)
    - if the query uses temporary table: for the slave SQL thread to know to
    which master connection the temp table belongs.
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    Now imagine we (write()) are called by the slave SQL thread (we are
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    logging a query executed by this thread; the slave runs with
    --log-slave-updates). Then this query will be logged with
    thread_id=the_thread_id_of_the_SQL_thread. Imagine that 2 temp tables of
    the same name were created simultaneously on the master (in the master
    binlog you have
    CREATE TEMPORARY TABLE t; (thread 1)
    CREATE TEMPORARY TABLE t; (thread 2)
    ...)
    then in the slave's binlog there will be
    CREATE TEMPORARY TABLE t; (thread_id_of_the_slave_SQL_thread)
    CREATE TEMPORARY TABLE t; (thread_id_of_the_slave_SQL_thread)
    which is bad (same thread id!).

    To avoid this, we log the thread's thread id EXCEPT for the SQL
    slave thread for which we log the original (master's) thread id.
    Now this moves the bug: what happens if the thread id on the
    master was 10 and when the slave replicates the query, a
    connection number 10 is opened by a normal client on the slave,
    and updates a temp table of the same name? We get a problem
    again. To avoid this, in the handling of temp tables (sql_base.cc)
    we use thread_id AND server_id.  TODO when this is merged into
    4.1: in 4.1, slave_proxy_id has been renamed to pseudo_thread_id
    and is a session variable: that's to make mysqlbinlog work with
    temp tables. We probably need to introduce

    SET PSEUDO_SERVER_ID
    for mysqlbinlog in 4.1. mysqlbinlog would print:
    SET PSEUDO_SERVER_ID=
    SET PSEUDO_THREAD_ID=
    for each query using temp tables.
  */
  int4store(buf + Q_THREAD_ID_OFFSET, slave_proxy_id);
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  int4store(buf + Q_EXEC_TIME_OFFSET, exec_time);
  buf[Q_DB_LEN_OFFSET] = (char) db_len;
  int2store(buf + Q_ERR_CODE_OFFSET, error_code);

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  /*
    You MUST always write status vars in increasing order of code. This
    guarantees that a slightly older slave will be able to parse those he
    knows.
  */
  start_of_status= start= buf+QUERY_HEADER_LEN;
  if (flags2_inited)
  {
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    *start++= Q_FLAGS2_CODE;
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    int4store(start, flags2);
    start+= 4;
  }
  if (sql_mode_inited)
  {
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    *start++= Q_SQL_MODE_CODE;
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    int8store(start, (ulonglong)sql_mode);
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    start+= 8;
  }
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  if (catalog_len) // i.e. this var is inited (false for 4.0 events)
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  {
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    write_str_with_code_and_len((char **)(&start),
                                catalog, catalog_len, Q_CATALOG_NZ_CODE);
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    /*
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      In 5.0.x where x<4 masters we used to store the end zero here. This was
      a waste of one byte so we don't do it in x>=4 masters. We change code to
      Q_CATALOG_NZ_CODE, because re-using the old code would make x<4 slaves
      of this x>=4 master segfault (expecting a zero when there is
      none). Remaining compatibility problems are: the older slave will not
      find the catalog; but it is will not crash, and it's not an issue
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      that it does not find the catalog as catalogs were not used in these
      older MySQL versions (we store it in binlog and read it from relay log
      but do nothing useful with it). What is an issue is that the older slave
      will stop processing the Q_* blocks (and jumps to the db/query) as soon
      as it sees unknown Q_CATALOG_NZ_CODE; so it will not be able to read
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      Q_AUTO_INCREMENT*, Q_CHARSET and so replication will fail silently in
      various ways. Documented that you should not mix alpha/beta versions if
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      they are not exactly the same version, with example of 5.0.3->5.0.2 and
      5.0.4->5.0.3. If replication is from older to new, the new will
      recognize Q_CATALOG_CODE and have no problem.
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    */
  }
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  if (auto_increment_increment != 1 || auto_increment_offset != 1)
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  {
    *start++= Q_AUTO_INCREMENT;
    int2store(start, auto_increment_increment);
    int2store(start+2, auto_increment_offset);
    start+= 4;
  }
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  if (charset_inited)
  {
2172
    *start++= Q_CHARSET_CODE;
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    memcpy(start, charset, 6);
    start+= 6;
  }
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  if (time_zone_len)
  {
    /* In the TZ sys table, column Name is of length 64 so this should be ok */
    DBUG_ASSERT(time_zone_len <= MAX_TIME_ZONE_NAME_LENGTH);
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    write_str_with_code_and_len((char **)(&start),
                                time_zone_str, time_zone_len, Q_TIME_ZONE_CODE);
2182
  }
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  if (lc_time_names_number)
  {
    DBUG_ASSERT(lc_time_names_number <= 0xFFFF);
    *start++= Q_LC_TIME_NAMES_CODE;
    int2store(start, lc_time_names_number);
    start+= 2;
  }
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  if (charset_database_number)
  {
    DBUG_ASSERT(charset_database_number <= 0xFFFF);
    *start++= Q_CHARSET_DATABASE_CODE;
    int2store(start, charset_database_number);
    start+= 2;
  }
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  if (table_map_for_update)
  {
    *start++= Q_TABLE_MAP_FOR_UPDATE_CODE;
    int8store(start, table_map_for_update);
    start+= 8;
  }
2203
  /*
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    NOTE: When adding new status vars, please don't forget to update
    the MAX_SIZE_LOG_EVENT_STATUS in log_event.h and update function
    code_name in this file.
   
2208
    Here there could be code like
2209
    if (command-line-option-which-says-"log_this_variable" && inited)
2210
    {
2211
    *start++= Q_THIS_VARIABLE_CODE;
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    int4store(start, this_variable);
    start+= 4;
    }
  */
  
  /* Store length of status variables */
  status_vars_len= (uint) (start-start_of_status);
2219
  DBUG_ASSERT(status_vars_len <= MAX_SIZE_LOG_EVENT_STATUS);
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  int2store(buf + Q_STATUS_VARS_LEN_OFFSET, status_vars_len);

  /*
    Calculate length of whole event
    The "1" below is the \0 in the db's length
  */
2226
  event_length= (uint) (start-buf) + get_post_header_size_for_derived() + db_len + 1 + q_len;
2227 2228

  return (write_header(file, event_length) ||
2229
          my_b_safe_write(file, (uchar*) buf, QUERY_HEADER_LEN) ||
2230
          write_post_header_for_derived(file) ||
2231
          my_b_safe_write(file, (uchar*) start_of_status,
2232
                          (uint) (start-start_of_status)) ||
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          my_b_safe_write(file, (db) ? (uchar*) db : (uchar*)"", db_len + 1) ||
          my_b_safe_write(file, (uchar*) query, q_len)) ? 1 : 0;
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}

2237
/**
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  The simplest constructor that could possibly work.  This is used for
  creating static objects that have a special meaning and are invisible
  to the log.  
*/
Query_log_event::Query_log_event()
  :Log_event(), data_buf(0)
{
}

2247

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/*
2249 2250
  SYNOPSIS
    Query_log_event::Query_log_event()
2251
      thd_arg           - thread handle
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      query_arg         - array of char representing the query
      query_length      - size of the  `query_arg' array
      using_trans       - there is a modified transactional table
      suppress_use      - suppress the generation of 'USE' statements
      killed_status_arg - an optional with default to THD::KILLED_NO_VALUE
                          if the value is different from the default, the arg
                          is set to the current thd->killed value.
                          A caller might need to masquerade thd->killed with
                          THD::NOT_KILLED.
  DESCRIPTION
  Creates an event for binlogging
  The value for local `killed_status' can be supplied by caller.
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*/
2265
Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg,
2266
				 ulong query_length, bool using_trans,
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				 bool suppress_use,
                                 THD::killed_state killed_status_arg)
2269
  :Log_event(thd_arg,
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             (thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F :
              0) |
             (suppress_use ? LOG_EVENT_SUPPRESS_USE_F : 0),
2273
	     using_trans),
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   data_buf(0), query(query_arg), catalog(thd_arg->catalog),
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   db(thd_arg->db), q_len((uint32) query_length),
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   thread_id(thd_arg->thread_id),
   /* save the original thread id; we already know the server id */
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   slave_proxy_id(thd_arg->variables.pseudo_thread_id),
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   flags2_inited(1), sql_mode_inited(1), charset_inited(1),
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   sql_mode(thd_arg->variables.sql_mode),
   auto_increment_increment(thd_arg->variables.auto_increment_increment),
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   auto_increment_offset(thd_arg->variables.auto_increment_offset),
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   lc_time_names_number(thd_arg->variables.lc_time_names->number),
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   charset_database_number(0),
   table_map_for_update((ulonglong)thd_arg->table_map_for_update)
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{
  time_t end_time;
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  if (killed_status_arg == THD::KILLED_NO_VALUE)
    killed_status_arg= thd_arg->killed;
  error_code=
2292 2293
    (killed_status_arg == THD::NOT_KILLED) ?
    (thd_arg->is_error() ? thd_arg->main_da.sql_errno() : 0) :
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    ((thd_arg->system_thread & SYSTEM_THREAD_DELAYED_INSERT) ? 0 :
2295
     thd_arg->killed_errno());
2296
  
2297
  time(&end_time);
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  exec_time = (ulong) (end_time  - thd_arg->start_time);
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  /**
    @todo this means that if we have no catalog, then it is replicated
    as an existing catalog of length zero. is that safe? /sven
  */
2303
  catalog_len = (catalog) ? (uint32) strlen(catalog) : 0;
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  /* status_vars_len is set just before writing the event */
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  db_len = (db) ? (uint32) strlen(db) : 0;
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  if (thd_arg->variables.collation_database != thd_arg->db_charset)
    charset_database_number= thd_arg->variables.collation_database->number;
  
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  /*
    If we don't use flags2 for anything else than options contained in
2311
    thd_arg->options, it would be more efficient to flags2=thd_arg->options
2312
    (OPTIONS_WRITTEN_TO_BIN_LOG would be used only at reading time).
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    But it's likely that we don't want to use 32 bits for 3 bits; in the future
    we will probably want to reclaim the 29 bits. So we need the &.
  */
2316
  flags2= (uint32) (thd_arg->options & OPTIONS_WRITTEN_TO_BIN_LOG);
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  DBUG_ASSERT(thd_arg->variables.character_set_client->number < 256*256);
  DBUG_ASSERT(thd_arg->variables.collation_connection->number < 256*256);
  DBUG_ASSERT(thd_arg->variables.collation_server->number < 256*256);
2320
  DBUG_ASSERT(thd_arg->variables.character_set_client->mbminlen == 1);
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  int2store(charset, thd_arg->variables.character_set_client->number);
  int2store(charset+2, thd_arg->variables.collation_connection->number);
  int2store(charset+4, thd_arg->variables.collation_server->number);
2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335
  if (thd_arg->time_zone_used)
  {
    /*
      Note that our event becomes dependent on the Time_zone object
      representing the time zone. Fortunately such objects are never deleted
      or changed during mysqld's lifetime.
    */
    time_zone_len= thd_arg->variables.time_zone->get_name()->length();
    time_zone_str= thd_arg->variables.time_zone->get_name()->ptr();
  }
  else
    time_zone_len= 0;
2336 2337
  DBUG_PRINT("info",("Query_log_event has flags2: %lu  sql_mode: %lu",
                     (ulong) flags2, sql_mode));
2338
}
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#endif /* MYSQL_CLIENT */
2340

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2341

2342 2343
/* 2 utility functions for the next method */

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/**
   Read a string with length from memory.

   This function reads the string-with-length stored at
   <code>src</code> and extract the length into <code>*len</code> and
   a pointer to the start of the string into <code>*dst</code>. The
   string can then be copied using <code>memcpy()</code> with the
   number of bytes given in <code>*len</code>.

   @param src Pointer to variable holding a pointer to the memory to
              read the string from.
   @param dst Pointer to variable holding a pointer where the actual
              string starts. Starting from this position, the string
              can be copied using @c memcpy().
   @param len Pointer to variable where the length will be stored.
   @param end One-past-the-end of the memory where the string is
              stored.

   @return    Zero if the entire string can be copied successfully,
              @c UINT_MAX if the length could not be read from memory
              (that is, if <code>*src >= end</code>), otherwise the
              number of bytes that are missing to read the full
              string, which happends <code>*dst + *len >= end</code>.
2367
*/
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static int
get_str_len_and_pointer(const Log_event::Byte **src,
                        const char **dst,
                        uint *len,
                        const Log_event::Byte *end)
2373
{
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  if (*src >= end)
    return -1;       // Will be UINT_MAX in two-complement arithmetics
  uint length= **src;
  if (length > 0)
  {
    if (*src + length >= end)
2380
      return *src + length - end + 1;       // Number of bytes missing
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    *dst= (char *)*src + 1;                    // Will be copied later
  }
  *len= length;
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  *src+= length + 1;
  return 0;
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}

2388 2389 2390
static void copy_str_and_move(const char **src, 
                              Log_event::Byte **dst, 
                              uint len)
2391 2392
{
  memcpy(*dst, *src, len);
2393
  *src= (const char *)*dst;
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  (*dst)+= len;
  *(*dst)++= 0;
}

2398

2399
#ifndef DBUG_OFF
2400 2401 2402 2403
static char const *
code_name(int code)
{
  static char buf[255];
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  switch (code) {
  case Q_FLAGS2_CODE: return "Q_FLAGS2_CODE";
  case Q_SQL_MODE_CODE: return "Q_SQL_MODE_CODE";
  case Q_CATALOG_CODE: return "Q_CATALOG_CODE";
  case Q_AUTO_INCREMENT: return "Q_AUTO_INCREMENT";
  case Q_CHARSET_CODE: return "Q_CHARSET_CODE";
  case Q_TIME_ZONE_CODE: return "Q_TIME_ZONE_CODE";
  case Q_CATALOG_NZ_CODE: return "Q_CATALOG_NZ_CODE";
  case Q_LC_TIME_NAMES_CODE: return "Q_LC_TIME_NAMES_CODE";
  case Q_CHARSET_DATABASE_CODE: return "Q_CHARSET_DATABASE_CODE";
2414
  case Q_TABLE_MAP_FOR_UPDATE_CODE: return "Q_TABLE_MAP_FOR_UPDATE_CODE";
2415 2416 2417 2418
  }
  sprintf(buf, "CODE#%d", code);
  return buf;
}
2419
#endif
2420

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/**
   Macro to check that there is enough space to read from memory.

   @param PTR Pointer to memory
   @param END End of memory
   @param CNT Number of bytes that should be read.
 */
2428 2429 2430 2431 2432 2433 2434 2435 2436
#define CHECK_SPACE(PTR,END,CNT)                      \
  do {                                                \
    DBUG_PRINT("info", ("Read %s", code_name(pos[-1]))); \
    DBUG_ASSERT((PTR) + (CNT) <= (END));              \
    if ((PTR) + (CNT) > (END)) {                      \
      DBUG_PRINT("info", ("query= 0"));               \
      query= 0;                                       \
      DBUG_VOID_RETURN;                               \
    }                                                 \
2437 2438
  } while (0)

2439

2440
/**
2441
  This is used by the SQL slave thread to prepare the event before execution.
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2442
*/
2443
Query_log_event::Query_log_event(const char* buf, uint event_len,
2444 2445
                                 const Format_description_log_event
                                 *description_event,
2446
                                 Log_event_type event_type)
2447
  :Log_event(buf, description_event), data_buf(0), query(NullS),
2448
   db(NullS), catalog_len(0), status_vars_len(0),
2449
   flags2_inited(0), sql_mode_inited(0), charset_inited(0),
2450
   auto_increment_increment(1), auto_increment_offset(1),
2451 2452
   time_zone_len(0), lc_time_names_number(0), charset_database_number(0),
   table_map_for_update(0)
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{
  ulong data_len;
2455 2456
  uint32 tmp;
  uint8 common_header_len, post_header_len;
2457 2458
  Log_event::Byte *start;
  const Log_event::Byte *end;
2459
  bool catalog_nz= 1;
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  DBUG_ENTER("Query_log_event::Query_log_event(char*,...)");

  common_header_len= description_event->common_header_len;
2463
  post_header_len= description_event->post_header_len[event_type-1];
2464
  DBUG_PRINT("info",("event_len: %u  common_header_len: %d  post_header_len: %d",
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                     event_len, common_header_len, post_header_len));
  
  /*
    We test if the event's length is sensible, and if so we compute data_len.
    We cannot rely on QUERY_HEADER_LEN here as it would not be format-tolerant.
    We use QUERY_HEADER_MINIMAL_LEN which is the same for 3.23, 4.0 & 5.0.
  */
  if (event_len < (uint)(common_header_len + post_header_len))
    DBUG_VOID_RETURN;				
  data_len = event_len - (common_header_len + post_header_len);
  buf+= common_header_len;
  
  slave_proxy_id= thread_id = uint4korr(buf + Q_THREAD_ID_OFFSET);
  exec_time = uint4korr(buf + Q_EXEC_TIME_OFFSET);
2479
  db_len = (uint)buf[Q_DB_LEN_OFFSET]; // TODO: add a check of all *_len vars
2480 2481 2482 2483 2484 2485 2486 2487 2488
  error_code = uint2korr(buf + Q_ERR_CODE_OFFSET);

  /*
    5.0 format starts here.
    Depending on the format, we may or not have affected/warnings etc
    The remnent post-header to be parsed has length:
  */
  tmp= post_header_len - QUERY_HEADER_MINIMAL_LEN; 
  if (tmp)
2489
  {
2490
    status_vars_len= uint2korr(buf + Q_STATUS_VARS_LEN_OFFSET);
2491 2492 2493 2494 2495 2496
    /*
      Check if status variable length is corrupt and will lead to very
      wrong data. We could be even more strict and require data_len to
      be even bigger, but this will suffice to catch most corruption
      errors that can lead to a crash.
    */
2497
    if (status_vars_len > min(data_len, MAX_SIZE_LOG_EVENT_STATUS))
2498
    {
2499
      DBUG_PRINT("info", ("status_vars_len (%u) > data_len (%lu); query= 0",
2500
                          status_vars_len, data_len));
2501 2502 2503
      query= 0;
      DBUG_VOID_RETURN;
    }
2504 2505 2506 2507
    data_len-= status_vars_len;
    DBUG_PRINT("info", ("Query_log_event has status_vars_len: %u",
                        (uint) status_vars_len));
    tmp-= 2;
2508
  }
2509 2510 2511 2512 2513 2514
  /*
    We have parsed everything we know in the post header for QUERY_EVENT,
    the rest of post header is either comes from older version MySQL or
    dedicated to derived events (e.g. Execute_load_query...)
  */

2515 2516
  /* variable-part: the status vars; only in MySQL 5.0  */
  
2517 2518 2519
  start= (Log_event::Byte*) (buf+post_header_len);
  end= (const Log_event::Byte*) (start+status_vars_len);
  for (const Log_event::Byte* pos= start; pos < end;)
2520
  {
2521 2522
    switch (*pos++) {
    case Q_FLAGS2_CODE:
2523
      CHECK_SPACE(pos, end, 4);
2524 2525
      flags2_inited= 1;
      flags2= uint4korr(pos);
2526
      DBUG_PRINT("info",("In Query_log_event, read flags2: %lu", (ulong) flags2));
2527 2528 2529 2530 2531 2532 2533
      pos+= 4;
      break;
    case Q_SQL_MODE_CODE:
    {
#ifndef DBUG_OFF
      char buff[22];
#endif
2534
      CHECK_SPACE(pos, end, 8);
2535 2536 2537 2538 2539 2540 2541
      sql_mode_inited= 1;
      sql_mode= (ulong) uint8korr(pos); // QQ: Fix when sql_mode is ulonglong
      DBUG_PRINT("info",("In Query_log_event, read sql_mode: %s",
			 llstr(sql_mode, buff)));
      pos+= 8;
      break;
    }
2542
    case Q_CATALOG_NZ_CODE:
2543
      DBUG_PRINT("info", ("case Q_CATALOG_NZ_CODE; pos: 0x%lx; end: 0x%lx",
2544
                          (ulong) pos, (ulong) end));
2545 2546
      if (get_str_len_and_pointer(&pos, &catalog, &catalog_len, end))
      {
2547
        DBUG_PRINT("info", ("query= 0"));
2548 2549 2550
        query= 0;
        DBUG_VOID_RETURN;
      }
2551 2552
      break;
    case Q_AUTO_INCREMENT:
2553
      CHECK_SPACE(pos, end, 4);
2554 2555 2556 2557
      auto_increment_increment= uint2korr(pos);
      auto_increment_offset=    uint2korr(pos+2);
      pos+= 4;
      break;
2558 2559
    case Q_CHARSET_CODE:
    {
2560
      CHECK_SPACE(pos, end, 6);
2561 2562 2563 2564 2565
      charset_inited= 1;
      memcpy(charset, pos, 6);
      pos+= 6;
      break;
    }
2566 2567
    case Q_TIME_ZONE_CODE:
    {
2568 2569
      if (get_str_len_and_pointer(&pos, &time_zone_str, &time_zone_len, end))
      {
2570
        DBUG_PRINT("info", ("Q_TIME_ZONE_CODE: query= 0"));
2571 2572 2573
        query= 0;
        DBUG_VOID_RETURN;
      }
2574 2575
      break;
    }
2576
    case Q_CATALOG_CODE: /* for 5.0.x where 0<=x<=3 masters */
2577
      CHECK_SPACE(pos, end, 1);
2578 2579
      if ((catalog_len= *pos))
        catalog= (char*) pos+1;                           // Will be copied later
2580
      CHECK_SPACE(pos, end, catalog_len + 2);
2581 2582 2583
      pos+= catalog_len+2; // leap over end 0
      catalog_nz= 0; // catalog has end 0 in event
      break;
2584
    case Q_LC_TIME_NAMES_CODE:
2585
      CHECK_SPACE(pos, end, 2);
2586 2587 2588
      lc_time_names_number= uint2korr(pos);
      pos+= 2;
      break;
2589
    case Q_CHARSET_DATABASE_CODE:
2590
      CHECK_SPACE(pos, end, 2);
2591 2592 2593
      charset_database_number= uint2korr(pos);
      pos+= 2;
      break;
2594 2595 2596 2597 2598
    case Q_TABLE_MAP_FOR_UPDATE_CODE:
      CHECK_SPACE(pos, end, 8);
      table_map_for_update= uint8korr(pos);
      pos+= 8;
      break;
2599 2600 2601 2602
    default:
      /* That's why you must write status vars in growing order of code */
      DBUG_PRINT("info",("Query_log_event has unknown status vars (first has\
 code: %u), skipping the rest of them", (uint) *(pos-1)));
2603
      pos= (const uchar*) end;                         // Break loop
2604
    }
2605
  }
2606
  
2607
#if !defined(MYSQL_CLIENT) && defined(HAVE_QUERY_CACHE)
2608 2609 2610 2611 2612 2613
  if (!(start= data_buf = (Log_event::Byte*) my_malloc(catalog_len + 1 +
                                              time_zone_len + 1 +
                                              data_len + 1 +
                                              QUERY_CACHE_FLAGS_SIZE +
                                              db_len + 1,
                                              MYF(MY_WME))))
2614
#else
2615 2616 2617 2618
  if (!(start= data_buf = (Log_event::Byte*) my_malloc(catalog_len + 1 +
                                             time_zone_len + 1 +
                                             data_len + 1,
                                             MYF(MY_WME))))
2619
#endif
2620
      DBUG_VOID_RETURN;
2621
  if (catalog_len)                                  // If catalog is given
2622
  {
2623 2624 2625 2626 2627
    /**
      @todo we should clean up and do only copy_str_and_move; it
      works for both cases.  Then we can remove the catalog_nz
      flag. /sven
    */
2628
    if (likely(catalog_nz)) // true except if event comes from 5.0.0|1|2|3.
2629
      copy_str_and_move(&catalog, &start, catalog_len);
2630 2631 2632
    else
    {
      memcpy(start, catalog, catalog_len+1); // copy end 0
2633
      catalog= (const char *)start;
2634 2635
      start+= catalog_len+1;
    }
2636
  }
2637
  if (time_zone_len)
2638
    copy_str_and_move(&time_zone_str, &start, time_zone_len);
2639

2640 2641 2642 2643 2644 2645 2646
  /**
    if time_zone_len or catalog_len are 0, then time_zone and catalog
    are uninitialized at this point.  shouldn't they point to the
    zero-length null-terminated strings we allocated space for in the
    my_alloc call above? /sven
  */

2647
  /* A 2nd variable part; this is common to all versions */ 
2648
  memcpy((char*) start, end, data_len);          // Copy db and query
2649
  start[data_len]= '\0';              // End query with \0 (For safetly)
2650 2651
  db= (char *)start;
  query= (char *)(start + db_len + 1);
2652 2653
  q_len= data_len - db_len -1;
  DBUG_VOID_RETURN;
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}

2656

2657
#ifdef MYSQL_CLIENT
2658 2659 2660 2661 2662 2663
/**
  Query_log_event::print().

  @todo
    print the catalog ??
*/
2664
void Query_log_event::print_query_header(IO_CACHE* file,
2665
					 PRINT_EVENT_INFO* print_event_info)
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{
2667
  // TODO: print the catalog ??
2668
  char buff[40],*end;				// Enough for SET TIMESTAMP
2669 2670 2671
  bool different_db= 1;
  uint32 tmp;

2672
  if (!print_event_info->short_form)
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2673
  {
2674 2675 2676 2677
    print_header(file, print_event_info, FALSE);
    my_b_printf(file, "\t%s\tthread_id=%lu\texec_time=%lu\terror_code=%d\n",
                get_type_str(), (ulong) thread_id, (ulong) exec_time,
                error_code);
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2678 2679
  }

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2680
  if (!(flags & LOG_EVENT_SUPPRESS_USE_F) && db)
2681
  {
2682 2683
    if (different_db= memcmp(print_event_info->db, db, db_len + 1))
      memcpy(print_event_info->db, db, db_len + 1);
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2684
    if (db[0] && different_db) 
2685
      my_b_printf(file, "use %s%s\n", db, print_event_info->delimiter);
2686
  }
2687

2688
  end=int10_to_str((long) when, strmov(buff,"SET TIMESTAMP="),10);
2689
  end= strmov(end, print_event_info->delimiter);
2690
  *end++='\n';
2691
  my_b_write(file, (uchar*) buff, (uint) (end-buff));
2692 2693 2694 2695 2696
  if ((!print_event_info->thread_id_printed ||
       ((flags & LOG_EVENT_THREAD_SPECIFIC_F) &&
        thread_id != print_event_info->thread_id)))
  {
    // If --short-form, print deterministic value instead of pseudo_thread_id.
2697
    my_b_printf(file,"SET @@session.pseudo_thread_id=%lu%s\n",
2698 2699 2700 2701 2702
                short_form ? 999999999 : (ulong)thread_id,
                print_event_info->delimiter);
    print_event_info->thread_id= thread_id;
    print_event_info->thread_id_printed= 1;
  }
2703

2704
  /*
2705 2706 2707
    If flags2_inited==0, this is an event from 3.23 or 4.0; nothing to
    print (remember we don't produce mixed relay logs so there cannot be
    5.0 events before that one so there is nothing to reset).
2708 2709 2710 2711
  */
  if (likely(flags2_inited)) /* likely as this will mainly read 5.0 logs */
  {
    /* tmp is a bitmask of bits which have changed. */
2712
    if (likely(print_event_info->flags2_inited)) 
2713
      /* All bits which have changed */
2714
      tmp= (print_event_info->flags2) ^ flags2;
2715 2716
    else /* that's the first Query event we read */
    {
2717
      print_event_info->flags2_inited= 1;
2718 2719 2720 2721 2722 2723
      tmp= ~((uint32)0); /* all bits have changed */
    }

    if (unlikely(tmp)) /* some bits have changed */
    {
      bool need_comma= 0;
2724
      my_b_printf(file, "SET ");
2725
      print_set_option(file, tmp, OPTION_NO_FOREIGN_KEY_CHECKS, ~flags2,
2726
                       "@@session.foreign_key_checks", &need_comma);
2727
      print_set_option(file, tmp, OPTION_AUTO_IS_NULL, flags2,
2728
                       "@@session.sql_auto_is_null", &need_comma);
2729
      print_set_option(file, tmp, OPTION_RELAXED_UNIQUE_CHECKS, ~flags2,
2730 2731 2732
                       "@@session.unique_checks", &need_comma);
      print_set_option(file, tmp, OPTION_NOT_AUTOCOMMIT, ~flags2,
                       "@@session.autocommit", &need_comma);
2733
      my_b_printf(file,"%s\n", print_event_info->delimiter);
2734
      print_event_info->flags2= flags2;
2735 2736 2737 2738
    }
  }

  /*
2739 2740 2741 2742 2743 2744 2745 2746 2747 2748
    Now the session variables;
    it's more efficient to pass SQL_MODE as a number instead of a
    comma-separated list.
    FOREIGN_KEY_CHECKS, SQL_AUTO_IS_NULL, UNIQUE_CHECKS are session-only
    variables (they have no global version; they're not listed in
    sql_class.h), The tests below work for pure binlogs or pure relay
    logs. Won't work for mixed relay logs but we don't create mixed
    relay logs (that is, there is no relay log with a format change
    except within the 3 first events, which mysqlbinlog handles
    gracefully). So this code should always be good.
2749 2750
  */

2751 2752 2753
  if (likely(sql_mode_inited) &&
      (unlikely(print_event_info->sql_mode != sql_mode ||
                !print_event_info->sql_mode_inited)))
2754
  {
2755 2756 2757 2758
    my_b_printf(file,"SET @@session.sql_mode=%lu%s\n",
                (ulong)sql_mode, print_event_info->delimiter);
    print_event_info->sql_mode= sql_mode;
    print_event_info->sql_mode_inited= 1;
2759
  }
2760 2761
  if (print_event_info->auto_increment_increment != auto_increment_increment ||
      print_event_info->auto_increment_offset != auto_increment_offset)
2762
  {
2763 2764 2765
    my_b_printf(file,"SET @@session.auto_increment_increment=%lu, @@session.auto_increment_offset=%lu%s\n",
                auto_increment_increment,auto_increment_offset,
                print_event_info->delimiter);
2766 2767
    print_event_info->auto_increment_increment= auto_increment_increment;
    print_event_info->auto_increment_offset=    auto_increment_offset;
2768 2769
  }

2770 2771
  /* TODO: print the catalog when we feature SET CATALOG */

2772 2773 2774
  if (likely(charset_inited) &&
      (unlikely(!print_event_info->charset_inited ||
                bcmp((uchar*) print_event_info->charset, (uchar*) charset, 6))))
2775
  {
2776 2777
    CHARSET_INFO *cs_info= get_charset(uint2korr(charset), MYF(MY_WME));
    if (cs_info)
2778
    {
2779 2780 2781
      /* for mysql client */
      my_b_printf(file, "/*!\\C %s */%s\n",
                  cs_info->csname, print_event_info->delimiter);
2782
    }
2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793
    my_b_printf(file,"SET "
                "@@session.character_set_client=%d,"
                "@@session.collation_connection=%d,"
                "@@session.collation_server=%d"
                "%s\n",
                uint2korr(charset),
                uint2korr(charset+2),
                uint2korr(charset+4),
                print_event_info->delimiter);
    memcpy(print_event_info->charset, charset, 6);
    print_event_info->charset_inited= 1;
2794
  }
2795 2796
  if (time_zone_len)
  {
2797 2798
    if (bcmp((uchar*) print_event_info->time_zone_str,
             (uchar*) time_zone_str, time_zone_len+1))
2799
    {
2800 2801
      my_b_printf(file,"SET @@session.time_zone='%s'%s\n",
                  time_zone_str, print_event_info->delimiter);
2802
      memcpy(print_event_info->time_zone_str, time_zone_str, time_zone_len+1);
2803 2804
    }
  }
2805 2806
  if (lc_time_names_number != print_event_info->lc_time_names_number)
  {
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2807 2808
    my_b_printf(file, "SET @@session.lc_time_names=%d%s\n",
                lc_time_names_number, print_event_info->delimiter);
2809 2810
    print_event_info->lc_time_names_number= lc_time_names_number;
  }
2811 2812 2813
  if (charset_database_number != print_event_info->charset_database_number)
  {
    if (charset_database_number)
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2814 2815
      my_b_printf(file, "SET @@session.collation_database=%d%s\n",
                  charset_database_number, print_event_info->delimiter);
2816
    else
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2817 2818
      my_b_printf(file, "SET @@session.collation_database=DEFAULT%s\n",
                  print_event_info->delimiter);
2819 2820
    print_event_info->charset_database_number= charset_database_number;
  }
2821 2822
}

2823

2824
void Query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
2825
{
2826 2827 2828
  Write_on_release_cache cache(&print_event_info->head_cache, file);

  print_query_header(&cache, print_event_info);
2829
  my_b_write(&cache, (uchar*) query, q_len);
2830
  my_b_printf(&cache, "\n%s\n", print_event_info->delimiter);
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2831
}
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2832
#endif /* MYSQL_CLIENT */
2833

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2834

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2835
/*
2836
  Query_log_event::do_apply_event()
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2837
*/
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2838

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SCRUM  
hf@deer.mysql.r18.ru committed
2839
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
2840

2841
int Query_log_event::do_apply_event(Relay_log_info const *rli)
2842
{
2843
  return do_apply_event(rli, query, q_len);
2844 2845 2846
}


2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863
/**
  @todo
  Compare the values of "affected rows" around here. Something
  like:
  @code
     if ((uint32) affected_in_event != (uint32) affected_on_slave)
     {
     sql_print_error("Slave: did not get the expected number of affected \
     rows running query from master - expected %d, got %d (this numbers \
     should have matched modulo 4294967296).", 0, ...);
     thd->query_error = 1;
     }
  @endcode
  We may also want an option to tell the slave to ignore "affected"
  mismatch. This mismatch could be implemented with a new ER_ code, and
  to ignore it you would use --slave-skip-errors...
*/
2864
int Query_log_event::do_apply_event(Relay_log_info const *rli,
2865
                                      const char *query_arg, uint32 q_len_arg)
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2866
{
2867
  LEX_STRING new_db;
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2868
  int expected_error,actual_error= 0;
2869
  /*
2870 2871 2872
    Colleagues: please never free(thd->catalog) in MySQL. This would
    lead to bugs as here thd->catalog is a part of an alloced block,
    not an entire alloced block (see
2873
    Query_log_event::do_apply_event()). Same for thd->db.  Thank
2874
    you.
2875
  */
2876
  thd->catalog= catalog_len ? (char *) catalog : (char *)"";
2877 2878 2879
  new_db.length= db_len;
  new_db.str= (char *) rpl_filter->get_rewrite_db(db, &new_db.length);
  thd->set_db(new_db.str, new_db.length);       /* allocates a copy of 'db' */
2880 2881
  thd->variables.auto_increment_increment= auto_increment_increment;
  thd->variables.auto_increment_offset=    auto_increment_offset;
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2882

2883
  /*
2884 2885 2886 2887 2888 2889 2890 2891
    InnoDB internally stores the master log position it has executed so far,
    i.e. the position just after the COMMIT event.
    When InnoDB will want to store, the positions in rli won't have
    been updated yet, so group_master_log_* will point to old BEGIN
    and event_master_log* will point to the beginning of current COMMIT.
    But log_pos of the COMMIT Query event is what we want, i.e. the pos of the
    END of the current log event (COMMIT). We save it in rli so that InnoDB can
    access it.
2892
  */
2893
  const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos;
2894 2895
  DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));

2896 2897
  clear_all_errors(thd, const_cast<Relay_log_info*>(rli));
  const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
2898

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lars@mysql.com committed
2899 2900 2901 2902 2903 2904 2905
  /*
    Note:   We do not need to execute reset_one_shot_variables() if this
            db_ok() test fails.
    Reason: The db stored in binlog events is the same for SET and for
            its companion query.  If the SET is ignored because of
            db_ok(), the companion query will also be ignored, and if
            the companion query is ignored in the db_ok() test of
2906
            ::do_apply_event(), then the companion SET also have so
2907
            we don't need to reset_one_shot_variables().
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lars@mysql.com committed
2908
  */
2909
  if (rpl_filter->db_ok(thd->db))
2910 2911
  {
    thd->set_time((time_t)when);
2912 2913
    thd->query_length= q_len_arg;
    thd->query= (char*)query_arg;
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2914
    VOID(pthread_mutex_lock(&LOCK_thread_count));
2915
    thd->query_id = next_query_id();
2916
    VOID(pthread_mutex_unlock(&LOCK_thread_count));
2917
    thd->variables.pseudo_thread_id= thread_id;		// for temp tables
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monty@mysql.com committed
2918
    DBUG_PRINT("query",("%s",thd->query));
2919

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monty@mysql.com committed
2920
    if (ignored_error_code((expected_error= error_code)) ||
2921
	!check_expected_error(thd,rli,expected_error))
2922 2923 2924
    {
      if (flags2_inited)
        /*
2925 2926
          all bits of thd->options which are 1 in OPTIONS_WRITTEN_TO_BIN_LOG
          must take their value from flags2.
2927
        */
2928
        thd->options= flags2|(thd->options & ~OPTIONS_WRITTEN_TO_BIN_LOG);
2929 2930
      /*
        else, we are in a 3.23/4.0 binlog; we previously received a
2931 2932
        Rotate_log_event which reset thd->options and sql_mode etc, so
        nothing to do.
2933 2934 2935 2936 2937
      */
      /*
        We do not replicate IGNORE_DIR_IN_CREATE. That is, if the master is a
        slave which runs with SQL_MODE=IGNORE_DIR_IN_CREATE, this should not
        force us to ignore the dir too. Imagine you are a ring of machines, and
2938 2939 2940
        one has a disk problem so that you temporarily need
        IGNORE_DIR_IN_CREATE on this machine; you don't want it to propagate
        elsewhere (you don't want all slaves to start ignoring the dirs).
2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958
      */
      if (sql_mode_inited)
        thd->variables.sql_mode=
          (ulong) ((thd->variables.sql_mode & MODE_NO_DIR_IN_CREATE) |
                   (sql_mode & ~(ulong) MODE_NO_DIR_IN_CREATE));
      if (charset_inited)
      {
        if (rli->cached_charset_compare(charset))
        {
          /* Verify that we support the charsets found in the event. */
          if (!(thd->variables.character_set_client=
                get_charset(uint2korr(charset), MYF(MY_WME))) ||
              !(thd->variables.collation_connection=
                get_charset(uint2korr(charset+2), MYF(MY_WME))) ||
              !(thd->variables.collation_server=
                get_charset(uint2korr(charset+4), MYF(MY_WME))))
          {
            /*
2959 2960 2961 2962
              We updated the thd->variables with nonsensical values (0). Let's
              set them to something safe (i.e. which avoids crash), and we'll
              stop with EE_UNKNOWN_CHARSET in compare_errors (unless set to
              ignore this error).
2963
            */
2964
            set_slave_thread_default_charset(thd, rli);
2965 2966 2967 2968 2969
            goto compare_errors;
          }
          thd->update_charset(); // for the charset change to take effect
        }
      }
2970 2971 2972
      if (time_zone_len)
      {
        String tmp(time_zone_str, time_zone_len, &my_charset_bin);
2973
        if (!(thd->variables.time_zone= my_tz_find(thd, &tmp)))
2974 2975 2976 2977 2978 2979
        {
          my_error(ER_UNKNOWN_TIME_ZONE, MYF(0), tmp.c_ptr());
          thd->variables.time_zone= global_system_variables.time_zone;
          goto compare_errors;
        }
      }
2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992
      if (lc_time_names_number)
      {
        if (!(thd->variables.lc_time_names=
              my_locale_by_number(lc_time_names_number)))
        {
          my_printf_error(ER_UNKNOWN_ERROR,
                      "Unknown locale: '%d'", MYF(0), lc_time_names_number);
          thd->variables.lc_time_names= &my_locale_en_US;
          goto compare_errors;
        }
      }
      else
        thd->variables.lc_time_names= &my_locale_en_US;
2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007
      if (charset_database_number)
      {
        CHARSET_INFO *cs;
        if (!(cs= get_charset(charset_database_number, MYF(0))))
        {
          char buf[20];
          int10_to_str((int) charset_database_number, buf, -10);
          my_error(ER_UNKNOWN_COLLATION, MYF(0), buf);
          goto compare_errors;
        }
        thd->variables.collation_database= cs;
      }
      else
        thd->variables.collation_database= thd->db_charset;
      
3008 3009
      thd->table_map_for_update= (table_map)table_map_for_update;
      
3010
      /* Execute the query (note that we bypass dispatch_command()) */
3011 3012
      const char* found_semicolon= NULL;
      mysql_parse(thd, thd->query, thd->query_length, &found_semicolon);
3013
      log_slow_statement(thd);
3014
    }
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3015 3016
    else
    {
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3017
      /*
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3018 3019 3020 3021 3022
        The query got a really bad error on the master (thread killed etc),
        which could be inconsistent. Parse it to test the table names: if the
        replicate-*-do|ignore-table rules say "this query must be ignored" then
        we exit gracefully; otherwise we warn about the bad error and tell DBA
        to check/fix it.
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monty@mashka.mysql.fi committed
3023
      */
3024
      if (mysql_test_parse_for_slave(thd, thd->query, thd->query_length))
3025
        clear_all_errors(thd, const_cast<Relay_log_info*>(rli)); /* Can ignore query */
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3026
      else
3027
      {
3028
        rli->report(ERROR_LEVEL, expected_error, 
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monty@mashka.mysql.fi committed
3029
                          "\
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3030
Query partially completed on the master (error on master: %d) \
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3031 3032 3033
and was aborted. There is a chance that your master is inconsistent at this \
point. If you are sure that your master is ok, run this query manually on the \
slave and then restart the slave with SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1; \
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3034
START SLAVE; . Query: '%s'", expected_error, thd->query);
3035
        thd->is_slave_error= 1;
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monty@mysql.com committed
3036 3037 3038
      }
      goto end;
    }
3039

3040
    /* If the query was not ignored, it is printed to the general log */
3041
    if (!thd->is_error() || thd->main_da.sql_errno() != ER_SLAVE_IGNORED_TABLE)
3042
      general_log_write(thd, COM_QUERY, thd->query, thd->query_length);
3043

3044
compare_errors:
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3045 3046

     /*
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3047 3048 3049
      If we expected a non-zero error code, and we don't get the same error
      code, and none of them should be ignored.
    */
3050 3051 3052 3053
    actual_error= thd->is_error() ? thd->main_da.sql_errno() : 0;
    DBUG_PRINT("info",("expected_error: %d  sql_errno: %d",
 		       expected_error, actual_error));
    if ((expected_error != actual_error) &&
3054 3055 3056
 	expected_error &&
 	!ignored_error_code(actual_error) &&
 	!ignored_error_code(expected_error))
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monty@mysql.com committed
3057
    {
3058
      rli->report(ERROR_LEVEL, 0,
3059 3060
                      "\
Query caused different errors on master and slave.     \
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3061
Error on master: '%s' (%d), Error on slave: '%s' (%d). \
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monty@mysql.com committed
3062
Default database: '%s'. Query: '%s'",
3063 3064
                      ER_SAFE(expected_error),
                      expected_error,
3065
                      actual_error ? thd->main_da.message() : "no error",
3066 3067
                      actual_error,
                      print_slave_db_safe(db), query_arg);
3068
      thd->is_slave_error= 1;
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3069 3070 3071 3072 3073
    }
    /*
      If we get the same error code as expected, or they should be ignored. 
    */
    else if (expected_error == actual_error ||
3074
 	     ignored_error_code(actual_error))
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monty@mysql.com committed
3075 3076
    {
      DBUG_PRINT("info",("error ignored"));
3077
      clear_all_errors(thd, const_cast<Relay_log_info*>(rli));
3078
      thd->killed= THD::NOT_KILLED;
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3079 3080 3081
    }
    /*
      Other cases: mostly we expected no error and get one.
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3082
    */
3083
    else if (thd->is_slave_error || thd->is_fatal_error)
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3084
    {
3085
      rli->report(ERROR_LEVEL, actual_error,
3086
                      "Error '%s' on query. Default database: '%s'. Query: '%s'",
3087
                      (actual_error ? thd->main_da.message() :
3088 3089
                       "unexpected success or fatal error"),
                      print_slave_db_safe(thd->db), query_arg);
3090
      thd->is_slave_error= 1;
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monty@mysql.com committed
3091
    }
3092 3093 3094 3095 3096 3097 3098 3099 3100

    /*
      TODO: compare the values of "affected rows" around here. Something
      like:
      if ((uint32) affected_in_event != (uint32) affected_on_slave)
      {
      sql_print_error("Slave: did not get the expected number of affected \
      rows running query from master - expected %d, got %d (this numbers \
      should have matched modulo 4294967296).", 0, ...);
3101
      thd->is_slave_error = 1;
3102 3103 3104 3105
      }
      We may also want an option to tell the slave to ignore "affected"
      mismatch. This mismatch could be implemented with a new ER_ code, and
      to ignore it you would use --slave-skip-errors...
3106

3107 3108 3109 3110 3111 3112 3113
      To do the comparison we need to know the value of "affected" which the
      above mysql_parse() computed. And we need to know the value of
      "affected" in the master's binlog. Both will be implemented later. The
      important thing is that we now have the format ready to log the values
      of "affected" in the binlog. So we can release 5.0.0 before effectively
      logging "affected" and effectively comparing it.
    */
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3114 3115
  } /* End of if (db_ok(... */

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3116
end:
3117
  VOID(pthread_mutex_lock(&LOCK_thread_count));
3118 3119 3120 3121 3122 3123
  /*
    Probably we have set thd->query, thd->db, thd->catalog to point to places
    in the data_buf of this event. Now the event is going to be deleted
    probably, so data_buf will be freed, so the thd->... listed above will be
    pointers to freed memory. 
    So we must set them to 0, so that those bad pointers values are not later
3124 3125 3126
    used. Note that "cleanup" queries like automatic DROP TEMPORARY TABLE
    don't suffer from these assignments to 0 as DROP TEMPORARY
    TABLE uses the db.table syntax.
3127
  */
3128
  thd->catalog= 0;
3129
  thd->set_db(NULL, 0);                 /* will free the current database */
3130
  DBUG_PRINT("info", ("end: query= 0"));
3131
  thd->query= 0;			// just to be sure
3132
  thd->query_length= 0;
3133
  VOID(pthread_mutex_unlock(&LOCK_thread_count));
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3134
  close_thread_tables(thd);      
3135 3136 3137 3138 3139 3140 3141 3142 3143 3144
  /*
    As a disk space optimization, future masters will not log an event for
    LAST_INSERT_ID() if that function returned 0 (and thus they will be able
    to replace the THD::stmt_depends_on_first_successful_insert_id_in_prev_stmt
    variable by (THD->first_successful_insert_id_in_prev_stmt > 0) ; with the
    resetting below we are ready to support that.
  */
  thd->first_successful_insert_id_in_prev_stmt_for_binlog= 0;
  thd->first_successful_insert_id_in_prev_stmt= 0;
  thd->stmt_depends_on_first_successful_insert_id_in_prev_stmt= 0;
3145
  free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
3146
  return thd->is_slave_error;
3147 3148
}

3149
int Query_log_event::do_update_pos(Relay_log_info *rli)
3150
{
3151
  /*
3152 3153 3154
    Note that we will not increment group* positions if we are just
    after a SET ONE_SHOT, because SET ONE_SHOT should not be separated
    from its following updating query.
3155
  */
3156 3157 3158 3159 3160 3161 3162
  if (thd->one_shot_set)
  {
    rli->inc_event_relay_log_pos();
    return 0;
  }
  else
    return Log_event::do_update_pos(rli);
3163
}
3164 3165


3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189
Log_event::enum_skip_reason
Query_log_event::do_shall_skip(Relay_log_info *rli)
{
  DBUG_ENTER("Query_log_event::do_shall_skip");
  DBUG_PRINT("debug", ("query: %s; q_len: %d", query, q_len));
  DBUG_ASSERT(query && q_len > 0);

  if (rli->slave_skip_counter > 0)
  {
    if (strcmp("BEGIN", query) == 0)
    {
      thd->options|= OPTION_BEGIN;
      DBUG_RETURN(Log_event::continue_group(rli));
    }

    if (strcmp("COMMIT", query) == 0 || strcmp("ROLLBACK", query) == 0)
    {
      thd->options&= ~OPTION_BEGIN;
      DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
    }
  }
  DBUG_RETURN(Log_event::do_shall_skip(rli));
}

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#endif
3191

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3193
/**************************************************************************
3194
	Start_log_event_v3 methods
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3195
**************************************************************************/
3196

3197
#ifndef MYSQL_CLIENT
3198 3199
Start_log_event_v3::Start_log_event_v3()
  :Log_event(), created(0), binlog_version(BINLOG_VERSION),
3200
   dont_set_created(0)
3201 3202 3203 3204 3205
{
  memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
}
#endif

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/*
3207
  Start_log_event_v3::pack_info()
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3208
*/
3209

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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3211
void Start_log_event_v3::pack_info(Protocol *protocol)
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3212
{
3213 3214 3215 3216
  char buf[12 + ST_SERVER_VER_LEN + 14 + 22], *pos;
  pos= strmov(buf, "Server ver: ");
  pos= strmov(pos, server_version);
  pos= strmov(pos, ", Binlog ver: ");
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3217 3218
  pos= int10_to_str(binlog_version, pos, 10);
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
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3219
}
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3220
#endif
3221 3222


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3223
/*
3224
  Start_log_event_v3::print()
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3225
*/
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3226 3227

#ifdef MYSQL_CLIENT
3228
void Start_log_event_v3::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
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3229
{
3230 3231 3232 3233 3234
  DBUG_ENTER("Start_log_event_v3::print");

  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

3235
  if (!print_event_info->short_form)
3236
  {
3237 3238 3239 3240
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tStart: binlog v %d, server v %s created ",
                binlog_version, server_version);
    print_timestamp(&cache);
3241
    if (created)
3242 3243
      my_b_printf(&cache," at startup");
    my_b_printf(&cache, "\n");
3244
    if (flags & LOG_EVENT_BINLOG_IN_USE_F)
3245 3246
      my_b_printf(&cache, "# Warning: this binlog was not closed properly. "
                  "Most probably mysqld crashed writing it.\n");
3247
  }
3248
  if (!is_artificial_event() && created)
3249
  {
3250
#ifdef WHEN_WE_HAVE_THE_RESET_CONNECTION_SQL_COMMAND
3251 3252 3253 3254 3255 3256
    /*
      This is for mysqlbinlog: like in replication, we want to delete the stale
      tmp files left by an unclean shutdown of mysqld (temporary tables)
      and rollback unfinished transaction.
      Probably this can be done with RESET CONNECTION (syntax to be defined).
    */
3257
    my_b_printf(&cache,"RESET CONNECTION%s\n", print_event_info->delimiter);
3258
#else
3259
    my_b_printf(&cache,"ROLLBACK%s\n", print_event_info->delimiter);
3260
#endif
3261
  }
3262 3263 3264 3265
  if (temp_buf &&
      print_event_info->base64_output_mode != BASE64_OUTPUT_NEVER &&
      !print_event_info->short_form)
  {
3266 3267
    if (print_event_info->base64_output_mode != BASE64_OUTPUT_DECODE_ROWS)
      my_b_printf(&cache, "BINLOG '\n");
3268 3269 3270
    print_base64(&cache, print_event_info, FALSE);
    print_event_info->printed_fd_event= TRUE;
  }
3271
  DBUG_VOID_RETURN;
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3272
}
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#endif /* MYSQL_CLIENT */
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3274

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3275
/*
3276
  Start_log_event_v3::Start_log_event_v3()
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3277
*/
3278

3279
Start_log_event_v3::Start_log_event_v3(const char* buf,
3280 3281
                                       const Format_description_log_event
                                       *description_event)
3282
  :Log_event(buf, description_event)
3283
{
3284 3285
  buf+= description_event->common_header_len;
  binlog_version= uint2korr(buf+ST_BINLOG_VER_OFFSET);
3286 3287
  memcpy(server_version, buf+ST_SERVER_VER_OFFSET,
	 ST_SERVER_VER_LEN);
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3288 3289
  // prevent overrun if log is corrupted on disk
  server_version[ST_SERVER_VER_LEN-1]= 0;
3290
  created= uint4korr(buf+ST_CREATED_OFFSET);
3291
  dont_set_created= 1;
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3292 3293
}

3294

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3295
/*
3296
  Start_log_event_v3::write()
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3297
*/
3298

3299
#ifndef MYSQL_CLIENT
3300
bool Start_log_event_v3::write(IO_CACHE* file)
3301
{
3302
  char buff[START_V3_HEADER_LEN];
3303 3304
  int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
  memcpy(buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
3305 3306
  if (!dont_set_created)
    created= when= get_time();
3307
  int4store(buff + ST_CREATED_OFFSET,created);
3308
  return (write_header(file, sizeof(buff)) ||
3309
          my_b_safe_write(file, (uchar*) buff, sizeof(buff)));
3310
}
3311
#endif
3312

3313

3314
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3315

3316 3317
/**
  Start_log_event_v3::do_apply_event() .
3318 3319
  The master started

3320
    IMPLEMENTATION
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3321
    - To handle the case where the master died without having time to write
3322 3323 3324
    DROP TEMPORARY TABLE, DO RELEASE_LOCK (prepared statements' deletion is
    TODO), we clean up all temporary tables that we got, if we are sure we
    can (see below).
3325

3326
  @todo
3327
    - Remove all active user locks.
3328 3329 3330 3331
    Guilhem 2003-06: this is true but not urgent: the worst it can cause is
    the use of a bit of memory for a user lock which will not be used
    anymore. If the user lock is later used, the old one will be released. In
    other words, no deadlock problem.
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3332 3333
*/

3334
int Start_log_event_v3::do_apply_event(Relay_log_info const *rli)
3335
{
3336
  DBUG_ENTER("Start_log_event_v3::do_apply_event");
3337 3338
  switch (binlog_version)
  {
3339 3340 3341 3342 3343 3344 3345
  case 3:
  case 4:
    /*
      This can either be 4.x (then a Start_log_event_v3 is only at master
      startup so we are sure the master has restarted and cleared his temp
      tables; the event always has 'created'>0) or 5.0 (then we have to test
      'created').
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3346
    */
3347 3348 3349 3350 3351
    if (created)
    {
      close_temporary_tables(thd);
      cleanup_load_tmpdir();
    }
3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362
    else
    {
      /*
        Set all temporary tables thread references to the current thread
        as they may point to the "old" SQL slave thread in case of its
        restart.
      */
      TABLE *table;
      for (table= thd->temporary_tables; table; table= table->next)
        table->in_use= thd;
    }
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3363 3364
    break;

3365
    /*
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3366 3367
       Now the older formats; in that case load_tmpdir is cleaned up by the I/O
       thread.
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3368
    */
3369
  case 1:
3370
    if (strncmp(rli->relay_log.description_event_for_exec->server_version,
3371 3372 3373 3374 3375 3376 3377 3378
                "3.23.57",7) >= 0 && created)
    {
      /*
        Can distinguish, based on the value of 'created': this event was
        generated at master startup.
      */
      close_temporary_tables(thd);
    }
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3379
    /*
3380 3381 3382
      Otherwise, can't distinguish a Start_log_event generated at
      master startup and one generated by master FLUSH LOGS, so cannot
      be sure temp tables have to be dropped. So do nothing.
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3383 3384 3385 3386
    */
    break;
  default:
    /* this case is impossible */
3387
    DBUG_RETURN(1);
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3388
  }
3389
  DBUG_RETURN(0);
3390
}
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3391
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
3392

3393 3394 3395 3396
/***************************************************************************
       Format_description_log_event methods
****************************************************************************/

3397
/**
3398 3399 3400 3401 3402 3403
  Format_description_log_event 1st ctor.

    Ctor. Can be used to create the event to write to the binary log (when the
    server starts or when FLUSH LOGS), or to create artificial events to parse
    binlogs from MySQL 3.23 or 4.x.
    When in a client, only the 2nd use is possible.
3404 3405 3406 3407 3408 3409 3410

  @param binlog_version         the binlog version for which we want to build
                                an event. Can be 1 (=MySQL 3.23), 3 (=4.0.x
                                x>=2 and 4.1) or 4 (MySQL 5.0). Note that the
                                old 4.0 (binlog version 2) is not supported;
                                it should not be used for replication with
                                5.0.
3411 3412 3413
*/

Format_description_log_event::
3414
Format_description_log_event(uint8 binlog_ver, const char* server_ver)
3415
  :Start_log_event_v3(), event_type_permutation(0)
3416 3417 3418 3419 3420
{
  binlog_version= binlog_ver;
  switch (binlog_ver) {
  case 4: /* MySQL 5.0 */
    memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
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3421 3422
    DBUG_EXECUTE_IF("pretend_version_50034_in_binlog",
                    strmov(server_version, "5.0.34"););
3423 3424 3425 3426
    common_header_len= LOG_EVENT_HEADER_LEN;
    number_of_event_types= LOG_EVENT_TYPES;
    /* we'll catch my_malloc() error in is_valid() */
    post_header_len=(uint8*) my_malloc(number_of_event_types*sizeof(uint8),
3427
                                       MYF(MY_ZEROFILL));
3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444
    /*
      This long list of assignments is not beautiful, but I see no way to
      make it nicer, as the right members are #defines, not array members, so
      it's impossible to write a loop.
    */
    if (post_header_len)
    {
      post_header_len[START_EVENT_V3-1]= START_V3_HEADER_LEN;
      post_header_len[QUERY_EVENT-1]= QUERY_HEADER_LEN;
      post_header_len[ROTATE_EVENT-1]= ROTATE_HEADER_LEN;
      post_header_len[LOAD_EVENT-1]= LOAD_HEADER_LEN;
      post_header_len[CREATE_FILE_EVENT-1]= CREATE_FILE_HEADER_LEN;
      post_header_len[APPEND_BLOCK_EVENT-1]= APPEND_BLOCK_HEADER_LEN;
      post_header_len[EXEC_LOAD_EVENT-1]= EXEC_LOAD_HEADER_LEN;
      post_header_len[DELETE_FILE_EVENT-1]= DELETE_FILE_HEADER_LEN;
      post_header_len[NEW_LOAD_EVENT-1]= post_header_len[LOAD_EVENT-1];
      post_header_len[FORMAT_DESCRIPTION_EVENT-1]= FORMAT_DESCRIPTION_HEADER_LEN;
3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463
      post_header_len[TABLE_MAP_EVENT-1]=    TABLE_MAP_HEADER_LEN;
      post_header_len[WRITE_ROWS_EVENT-1]=   ROWS_HEADER_LEN;
      post_header_len[UPDATE_ROWS_EVENT-1]=  ROWS_HEADER_LEN;
      post_header_len[DELETE_ROWS_EVENT-1]=  ROWS_HEADER_LEN;
      /*
        We here have the possibility to simulate a master of before we changed
        the table map id to be stored in 6 bytes: when it was stored in 4
        bytes (=> post_header_len was 6). This is used to test backward
        compatibility.
        This code can be removed after a few months (today is Dec 21st 2005),
        when we know that the 4-byte masters are not deployed anymore (check
        with Tomas Ulin first!), and the accompanying test (rpl_row_4_bytes)
        too.
      */
      DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                      post_header_len[TABLE_MAP_EVENT-1]=
                      post_header_len[WRITE_ROWS_EVENT-1]=
                      post_header_len[UPDATE_ROWS_EVENT-1]=
                      post_header_len[DELETE_ROWS_EVENT-1]= 6;);
3464 3465
      post_header_len[BEGIN_LOAD_QUERY_EVENT-1]= post_header_len[APPEND_BLOCK_EVENT-1];
      post_header_len[EXECUTE_LOAD_QUERY_EVENT-1]= EXECUTE_LOAD_QUERY_HEADER_LEN;
3466
      post_header_len[INCIDENT_EVENT-1]= INCIDENT_HEADER_LEN;
3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480
    }
    break;

  case 1: /* 3.23 */
  case 3: /* 4.0.x x>=2 */
    /*
      We build an artificial (i.e. not sent by the master) event, which
      describes what those old master versions send.
    */
    if (binlog_ver==1)
      strmov(server_version, server_ver ? server_ver : "3.23");
    else
      strmov(server_version, server_ver ? server_ver : "4.0");
    common_header_len= binlog_ver==1 ? OLD_HEADER_LEN :
3481
      LOG_EVENT_MINIMAL_HEADER_LEN;
3482 3483 3484 3485 3486 3487 3488 3489 3490
    /*
      The first new event in binlog version 4 is Format_desc. So any event type
      after that does not exist in older versions. We use the events known by
      version 3, even if version 1 had only a subset of them (this is not a
      problem: it uses a few bytes for nothing but unifies code; it does not
      make the slave detect less corruptions).
    */
    number_of_event_types= FORMAT_DESCRIPTION_EVENT - 1;
    post_header_len=(uint8*) my_malloc(number_of_event_types*sizeof(uint8),
3491
                                       MYF(0));
3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513
    if (post_header_len)
    {
      post_header_len[START_EVENT_V3-1]= START_V3_HEADER_LEN;
      post_header_len[QUERY_EVENT-1]= QUERY_HEADER_MINIMAL_LEN;
      post_header_len[STOP_EVENT-1]= 0;
      post_header_len[ROTATE_EVENT-1]= (binlog_ver==1) ? 0 : ROTATE_HEADER_LEN;
      post_header_len[INTVAR_EVENT-1]= 0;
      post_header_len[LOAD_EVENT-1]= LOAD_HEADER_LEN;
      post_header_len[SLAVE_EVENT-1]= 0;
      post_header_len[CREATE_FILE_EVENT-1]= CREATE_FILE_HEADER_LEN;
      post_header_len[APPEND_BLOCK_EVENT-1]= APPEND_BLOCK_HEADER_LEN;
      post_header_len[EXEC_LOAD_EVENT-1]= EXEC_LOAD_HEADER_LEN;
      post_header_len[DELETE_FILE_EVENT-1]= DELETE_FILE_HEADER_LEN;
      post_header_len[NEW_LOAD_EVENT-1]= post_header_len[LOAD_EVENT-1];
      post_header_len[RAND_EVENT-1]= 0;
      post_header_len[USER_VAR_EVENT-1]= 0;
    }
    break;
  default: /* Includes binlog version 2 i.e. 4.0.x x<=1 */
    post_header_len= 0; /* will make is_valid() fail */
    break;
  }
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3514
  calc_server_version_split();
3515 3516 3517
}


3518
/**
3519 3520 3521 3522
  The problem with this constructor is that the fixed header may have a
  length different from this version, but we don't know this length as we
  have not read the Format_description_log_event which says it, yet. This
  length is in the post-header of the event, but we don't know where the
3523
  post-header starts.
3524

3525 3526 3527 3528 3529 3530
  So this type of event HAS to:
  - either have the header's length at the beginning (in the header, at a
  fixed position which will never be changed), not in the post-header. That
  would make the header be "shifted" compared to other events.
  - or have a header of size LOG_EVENT_MINIMAL_HEADER_LEN (19), in all future
  versions, so that we know for sure.
3531

3532 3533 3534 3535 3536 3537 3538 3539 3540
  I (Guilhem) chose the 2nd solution. Rotate has the same constraint (because
  it is sent before Format_description_log_event).
*/

Format_description_log_event::
Format_description_log_event(const char* buf,
                             uint event_len,
                             const
                             Format_description_log_event*
3541
                             description_event)
3542
  :Start_log_event_v3(buf, description_event), event_type_permutation(0)
3543 3544 3545 3546 3547 3548 3549 3550
{
  DBUG_ENTER("Format_description_log_event::Format_description_log_event(char*,...)");
  buf+= LOG_EVENT_MINIMAL_HEADER_LEN;
  if ((common_header_len=buf[ST_COMMON_HEADER_LEN_OFFSET]) < OLD_HEADER_LEN)
    DBUG_VOID_RETURN; /* sanity check */
  number_of_event_types=
    event_len-(LOG_EVENT_MINIMAL_HEADER_LEN+ST_COMMON_HEADER_LEN_OFFSET+1);
  DBUG_PRINT("info", ("common_header_len=%d number_of_event_types=%d",
3551
                      common_header_len, number_of_event_types));
3552
  /* If alloc fails, we'll detect it in is_valid() */
3553
  post_header_len= (uint8*) my_memdup((uchar*)buf+ST_COMMON_HEADER_LEN_OFFSET+1,
3554
                                      number_of_event_types*
3555
                                      sizeof(*post_header_len), MYF(0));
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3556
  calc_server_version_split();
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  /*
    In some previous versions, the events were given other event type
    id numbers than in the present version. When replicating from such
    a version, we therefore set up an array that maps those id numbers
    to the id numbers of the present server.

    If post_header_len is null, it means malloc failed, and is_valid
    will fail, so there is no need to do anything.

3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609
    The trees in which events have wrong id's are:

    mysql-5.1-wl1012.old mysql-5.1-wl2325-5.0-drop6p13-alpha
    mysql-5.1-wl2325-5.0-drop6 mysql-5.1-wl2325-5.0
    mysql-5.1-wl2325-no-dd

    (this was found by grepping for two lines in sequence where the
    first matches "FORMAT_DESCRIPTION_EVENT," and the second matches
    "TABLE_MAP_EVENT," in log_event.h in all trees)

    In these trees, the following server_versions existed since
    TABLE_MAP_EVENT was introduced:

    5.1.1-a_drop5p3   5.1.1-a_drop5p4        5.1.1-alpha
    5.1.2-a_drop5p10  5.1.2-a_drop5p11       5.1.2-a_drop5p12
    5.1.2-a_drop5p13  5.1.2-a_drop5p14       5.1.2-a_drop5p15
    5.1.2-a_drop5p16  5.1.2-a_drop5p16b      5.1.2-a_drop5p16c
    5.1.2-a_drop5p17  5.1.2-a_drop5p4        5.1.2-a_drop5p5
    5.1.2-a_drop5p6   5.1.2-a_drop5p7        5.1.2-a_drop5p8
    5.1.2-a_drop5p9   5.1.3-a_drop5p17       5.1.3-a_drop5p17b
    5.1.3-a_drop5p17c 5.1.4-a_drop5p18       5.1.4-a_drop5p19
    5.1.4-a_drop5p20  5.1.4-a_drop6p0        5.1.4-a_drop6p1
    5.1.4-a_drop6p2   5.1.5-a_drop5p20       5.2.0-a_drop6p3
    5.2.0-a_drop6p4   5.2.0-a_drop6p5        5.2.0-a_drop6p6
    5.2.1-a_drop6p10  5.2.1-a_drop6p11       5.2.1-a_drop6p12
    5.2.1-a_drop6p6   5.2.1-a_drop6p7        5.2.1-a_drop6p8
    5.2.2-a_drop6p13  5.2.2-a_drop6p13-alpha 5.2.2-a_drop6p13b
    5.2.2-a_drop6p13c

    (this was found by grepping for "mysql," in all historical
    versions of configure.in in the trees listed above).

    There are 5.1.1-alpha versions that use the new event id's, so we
    do not test that version string.  So replication from 5.1.1-alpha
    with the other event id's to a new version does not work.
    Moreover, we can safely ignore the part after drop[56].  This
    allows us to simplify the big list above to the following regexes:

    5\.1\.[1-5]-a_drop5.*
    5\.1\.4-a_drop6.*
    5\.2\.[0-2]-a_drop6.*

    This is what we test for in the 'if' below.
3610 3611
  */
  if (post_header_len &&
3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623
      server_version[0] == '5' && server_version[1] == '.' &&
      server_version[3] == '.' &&
      strncmp(server_version + 5, "-a_drop", 7) == 0 &&
      ((server_version[2] == '1' &&
        server_version[4] >= '1' && server_version[4] <= '5' &&
        server_version[12] == '5') ||
       (server_version[2] == '1' &&
        server_version[4] == '4' &&
        server_version[12] == '6') ||
       (server_version[2] == '2' &&
        server_version[4] >= '0' && server_version[4] <= '2' &&
        server_version[12] == '6')))
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  {
    if (number_of_event_types != 22)
    {
      DBUG_PRINT("info", (" number_of_event_types=%d",
                          number_of_event_types));
      /* this makes is_valid() return false. */
      my_free(post_header_len, MYF(MY_ALLOW_ZERO_PTR));
      post_header_len= NULL;
      DBUG_VOID_RETURN;
    }
    static const uint8 perm[23]=
      {
        UNKNOWN_EVENT, START_EVENT_V3, QUERY_EVENT, STOP_EVENT, ROTATE_EVENT,
        INTVAR_EVENT, LOAD_EVENT, SLAVE_EVENT, CREATE_FILE_EVENT,
        APPEND_BLOCK_EVENT, EXEC_LOAD_EVENT, DELETE_FILE_EVENT,
        NEW_LOAD_EVENT,
        RAND_EVENT, USER_VAR_EVENT,
        FORMAT_DESCRIPTION_EVENT,
        TABLE_MAP_EVENT,
        PRE_GA_WRITE_ROWS_EVENT,
        PRE_GA_UPDATE_ROWS_EVENT,
        PRE_GA_DELETE_ROWS_EVENT,
        XID_EVENT,
        BEGIN_LOAD_QUERY_EVENT,
        EXECUTE_LOAD_QUERY_EVENT,
      };
    event_type_permutation= perm;
    /*
      Since we use (permuted) event id's to index the post_header_len
      array, we need to permute the post_header_len array too.
    */
    uint8 post_header_len_temp[23];
    for (int i= 1; i < 23; i++)
      post_header_len_temp[perm[i] - 1]= post_header_len[i - 1];
    for (int i= 0; i < 22; i++)
      post_header_len[i] = post_header_len_temp[i];
  }
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  DBUG_VOID_RETURN;
}

3664
#ifndef MYSQL_CLIENT
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bool Format_description_log_event::write(IO_CACHE* file)
{
  /*
    We don't call Start_log_event_v3::write() because this would make 2
    my_b_safe_write().
  */
3671
  uchar buff[FORMAT_DESCRIPTION_HEADER_LEN];
3672 3673
  int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
  memcpy((char*) buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
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  if (!dont_set_created)
    created= when= get_time();
3676
  int4store(buff + ST_CREATED_OFFSET,created);
3677
  buff[ST_COMMON_HEADER_LEN_OFFSET]= LOG_EVENT_HEADER_LEN;
3678
  memcpy((char*) buff+ST_COMMON_HEADER_LEN_OFFSET+1, (uchar*) post_header_len,
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         LOG_EVENT_TYPES);
  return (write_header(file, sizeof(buff)) ||
          my_b_safe_write(file, buff, sizeof(buff)));
}
3683
#endif
3684

3685
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3686
int Format_description_log_event::do_apply_event(Relay_log_info const *rli)
3687
{
3688
  DBUG_ENTER("Format_description_log_event::do_apply_event");
3689

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#ifdef USING_TRANSACTIONS
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  /*
    As a transaction NEVER spans on 2 or more binlogs:
    if we have an active transaction at this point, the master died
    while writing the transaction to the binary log, i.e. while
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    flushing the binlog cache to the binlog. XA guarantees that master has
    rolled back. So we roll back.
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    Note: this event could be sent by the master to inform us of the
    format of its binlog; in other words maybe it is not at its
    original place when it comes to us; we'll know this by checking
    log_pos ("artificial" events have log_pos == 0).
  */
3702
  if (!is_artificial_event() && created && thd->transaction.all.ha_list)
3703
  {
3704
    /* This is not an error (XA is safe), just an information */
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    rli->report(INFORMATION_LEVEL, 0,
                "Rolling back unfinished transaction (no COMMIT "
                "or ROLLBACK in relay log). A probable cause is that "
                "the master died while writing the transaction to "
                "its binary log, thus rolled back too."); 
3710
    const_cast<Relay_log_info*>(rli)->cleanup_context(thd, 1);
3711
  }
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#endif
3713
  /*
3714
    If this event comes from ourselves, there is no cleaning task to
3715
    perform, we don't call Start_log_event_v3::do_apply_event()
3716
    (this was just to update the log's description event).
3717
  */
3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733
  if (server_id != (uint32) ::server_id)
  {
    /*
      If the event was not requested by the slave i.e. the master sent
      it while the slave asked for a position >4, the event will make
      rli->group_master_log_pos advance. Say that the slave asked for
      position 1000, and the Format_desc event's end is 96. Then in
      the beginning of replication rli->group_master_log_pos will be
      0, then 96, then jump to first really asked event (which is
      >96). So this is ok.
    */
    DBUG_RETURN(Start_log_event_v3::do_apply_event(rli));
  }
  DBUG_RETURN(0);
}

3734
int Format_description_log_event::do_update_pos(Relay_log_info *rli)
3735 3736 3737 3738 3739
{
  /* save the information describing this binlog */
  delete rli->relay_log.description_event_for_exec;
  rli->relay_log.description_event_for_exec= this;

3740 3741 3742
  if (server_id == (uint32) ::server_id)
  {
    /*
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      We only increase the relay log position if we are skipping
      events and do not touch any group_* variables, nor flush the
      relay log info.  If there is a crash, we will have to re-skip
      the events again, but that is a minor issue.

      If we do not skip stepping the group log position (and the
      server id was changed when restarting the server), it might well
      be that we start executing at a position that is invalid, e.g.,
      at a Rows_log_event or a Query_log_event preceeded by a
      Intvar_log_event instead of starting at a Table_map_log_event or
      the Intvar_log_event respectively.
     */
    rli->inc_event_relay_log_pos();
3756
    return 0;
3757
  }
3758 3759 3760
  else
  {
    return Log_event::do_update_pos(rli);
3761 3762 3763
  }
}

3764
Log_event::enum_skip_reason
3765
Format_description_log_event::do_shall_skip(Relay_log_info *rli)
3766
{
3767
  return Log_event::EVENT_SKIP_NOT;
3768
}
3769

3770 3771
#endif

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/**
   Splits the event's 'server_version' string into three numeric pieces stored
   into 'server_version_split':
   X.Y.Zabc (X,Y,Z numbers, a not a digit) -> {X,Y,Z}
   X.Yabc -> {X,Y,0}
   Xabc -> {X,0,0}
   'server_version_split' is then used for lookups to find if the server which
   created this event has some known bug.
*/
void Format_description_log_event::calc_server_version_split()
{
  char *p= server_version, *r;
  ulong number;
  for (uint i= 0; i<=2; i++)
  {
    number= strtoul(p, &r, 10);
    server_version_split[i]= (uchar)number;
    DBUG_ASSERT(number < 256); // fit in uchar
    p= r;
    DBUG_ASSERT(!((i == 0) && (*r != '.'))); // should be true in practice
    if (*r == '.')
      p++; // skip the dot
  }
  DBUG_PRINT("info",("Format_description_log_event::server_version_split:"
                     " '%s' %d %d %d", server_version,
                     server_version_split[0],
                     server_version_split[1], server_version_split[2]));
}


3803
  /**************************************************************************
3804
        Load_log_event methods
3805
   General note about Load_log_event: the binlogging of LOAD DATA INFILE is
3806
   going to be changed in 5.0 (or maybe in 5.1; not decided yet).
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   However, the 5.0 slave could still have to read such events (from a 4.x
   master), convert them (which just means maybe expand the header, when 5.0
   servers have a UID in events) (remember that whatever is after the header
   will be like in 4.x, as this event's format is not modified in 5.0 as we
   will use new types of events to log the new LOAD DATA INFILE features).
   To be able to read/convert, we just need to not assume that the common
   header is of length LOG_EVENT_HEADER_LEN (we must use the description
   event).
   Note that I (Guilhem) manually tested replication of a big LOAD DATA INFILE
   between 3.23 and 5.0, and between 4.0 and 5.0, and it works fine (and the
   positions displayed in SHOW SLAVE STATUS then are fine too).
  **************************************************************************/
3819

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3820
/*
3821
  Load_log_event::pack_info()
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3822
*/
3823

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3824
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3825
uint Load_log_event::get_query_buffer_length()
3826
{
3827
  return
3828 3829
    5 + db_len + 3 +                        // "use DB; "
    18 + fname_len + 2 +                    // "LOAD DATA INFILE 'file''"
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3830
    7 +					    // LOCAL
3831
    9 +                                     // " REPLACE or IGNORE "
3832
    13 + table_name_len*2 +                 // "INTO TABLE `table`"
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    21 + sql_ex.field_term_len*4 + 2 +      // " FIELDS TERMINATED BY 'str'"
    23 + sql_ex.enclosed_len*4 + 2 +        // " OPTIONALLY ENCLOSED BY 'str'"
    12 + sql_ex.escaped_len*4 + 2 +         // " ESCAPED BY 'str'"
3836
    21 + sql_ex.line_term_len*4 + 2 +       // " LINES TERMINATED BY 'str'"
3837 3838
    19 + sql_ex.line_start_len*4 + 2 +      // " LINES STARTING BY 'str'"
    15 + 22 +                               // " IGNORE xxx  LINES"
3839
    3 + (num_fields-1)*2 + field_block_len; // " (field1, field2, ...)"
3840
}
3841

3842 3843 3844 3845 3846 3847 3848

void Load_log_event::print_query(bool need_db, char *buf,
                                 char **end, char **fn_start, char **fn_end)
{
  char *pos= buf;

  if (need_db && db && db_len)
3849
  {
3850 3851
    pos= strmov(pos, "use `");
    memcpy(pos, db, db_len);
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3852
    pos= strmov(pos+db_len, "`; ");
3853
  }
3854

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3855
  pos= strmov(pos, "LOAD DATA ");
3856 3857 3858 3859

  if (fn_start)
    *fn_start= pos;

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  if (check_fname_outside_temp_buf())
    pos= strmov(pos, "LOCAL ");
  pos= strmov(pos, "INFILE '");
3863
  memcpy(pos, fname, fname_len);
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  pos= strmov(pos+fname_len, "' ");
3865

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3866
  if (sql_ex.opt_flags & REPLACE_FLAG)
3867
    pos= strmov(pos, " REPLACE ");
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3868
  else if (sql_ex.opt_flags & IGNORE_FLAG)
3869 3870
    pos= strmov(pos, " IGNORE ");

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  pos= strmov(pos ,"INTO");

  if (fn_end)
    *fn_end= pos;

  pos= strmov(pos ," TABLE `");
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  memcpy(pos, table_name, table_name_len);
  pos+= table_name_len;

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  /* We have to create all optinal fields as the default is not empty */
3881
  pos= strmov(pos, "` FIELDS TERMINATED BY ");
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  pos= pretty_print_str(pos, sql_ex.field_term, sql_ex.field_term_len);
  if (sql_ex.opt_flags & OPT_ENCLOSED_FLAG)
    pos= strmov(pos, " OPTIONALLY ");
  pos= strmov(pos, " ENCLOSED BY ");
  pos= pretty_print_str(pos, sql_ex.enclosed, sql_ex.enclosed_len);
3887

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3888 3889
  pos= strmov(pos, " ESCAPED BY ");
  pos= pretty_print_str(pos, sql_ex.escaped, sql_ex.escaped_len);
3890

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3891 3892
  pos= strmov(pos, " LINES TERMINATED BY ");
  pos= pretty_print_str(pos, sql_ex.line_term, sql_ex.line_term_len);
3893 3894
  if (sql_ex.line_start_len)
  {
3895
    pos= strmov(pos, " STARTING BY ");
3896
    pos= pretty_print_str(pos, sql_ex.line_start, sql_ex.line_start_len);
3897
  }
3898

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3899
  if ((long) skip_lines > 0)
3900 3901
  {
    pos= strmov(pos, " IGNORE ");
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3902
    pos= longlong10_to_str((longlong) skip_lines, pos, 10);
3903 3904
    pos= strmov(pos," LINES ");    
  }
3905 3906 3907 3908

  if (num_fields)
  {
    uint i;
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3909
    const char *field= fields;
3910
    pos= strmov(pos, " (");
3911 3912 3913
    for (i = 0; i < num_fields; i++)
    {
      if (i)
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      {
        *pos++= ' ';
        *pos++= ',';
      }
3918
      memcpy(pos, field, field_lens[i]);
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      pos+=   field_lens[i];
      field+= field_lens[i]  + 1;
3921
    }
3922
    *pos++= ')';
3923
  }
3924

3925 3926 3927 3928 3929 3930 3931 3932
  *end= pos;
}


void Load_log_event::pack_info(Protocol *protocol)
{
  char *buf, *end;

3933
  if (!(buf= (char*) my_malloc(get_query_buffer_length(), MYF(MY_WME))))
3934 3935 3936
    return;
  print_query(TRUE, buf, &end, 0, 0);
  protocol->store(buf, end-buf, &my_charset_bin);
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  my_free(buf, MYF(0));
3938
}
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3939
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
3940

3941

3942 3943
#ifndef MYSQL_CLIENT

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3944
/*
3945
  Load_log_event::write_data_header()
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3946
*/
3947

3948
bool Load_log_event::write_data_header(IO_CACHE* file)
3949
{
3950
  char buf[LOAD_HEADER_LEN];
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3951
  int4store(buf + L_THREAD_ID_OFFSET, slave_proxy_id);
3952 3953 3954 3955 3956
  int4store(buf + L_EXEC_TIME_OFFSET, exec_time);
  int4store(buf + L_SKIP_LINES_OFFSET, skip_lines);
  buf[L_TBL_LEN_OFFSET] = (char)table_name_len;
  buf[L_DB_LEN_OFFSET] = (char)db_len;
  int4store(buf + L_NUM_FIELDS_OFFSET, num_fields);
3957
  return my_b_safe_write(file, (uchar*)buf, LOAD_HEADER_LEN) != 0;
3958
}
3959

3960

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3961
/*
3962
  Load_log_event::write_data_body()
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3963
*/
3964

3965
bool Load_log_event::write_data_body(IO_CACHE* file)
3966
{
3967 3968 3969
  if (sql_ex.write_data(file))
    return 1;
  if (num_fields && fields && field_lens)
3970
  {
3971 3972
    if (my_b_safe_write(file, (uchar*)field_lens, num_fields) ||
	my_b_safe_write(file, (uchar*)fields, field_block_len))
3973
      return 1;
3974
  }
3975 3976 3977
  return (my_b_safe_write(file, (uchar*)table_name, table_name_len + 1) ||
	  my_b_safe_write(file, (uchar*)db, db_len + 1) ||
	  my_b_safe_write(file, (uchar*)fname, fname_len));
3978 3979
}

3980

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3981
/*
3982
  Load_log_event::Load_log_event()
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3983
*/
3984

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Load_log_event::Load_log_event(THD *thd_arg, sql_exchange *ex,
			       const char *db_arg, const char *table_name_arg,
			       List<Item> &fields_arg,
3988
			       enum enum_duplicates handle_dup,
3989
			       bool ignore, bool using_trans)
3990
  :Log_event(thd_arg,
3991
             thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F : 0,
3992
             using_trans),
3993
   thread_id(thd_arg->thread_id),
3994
   slave_proxy_id(thd_arg->variables.pseudo_thread_id),
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   num_fields(0),fields(0),
   field_lens(0),field_block_len(0),
3997
   table_name(table_name_arg ? table_name_arg : ""),
3998
   db(db_arg), fname(ex->file_name), local_fname(FALSE)
3999 4000 4001
{
  time_t end_time;
  time(&end_time);
4002
  exec_time = (ulong) (end_time  - thd_arg->start_time);
4003 4004 4005
  /* db can never be a zero pointer in 4.0 */
  db_len = (uint32) strlen(db);
  table_name_len = (uint32) strlen(table_name);
4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018
  fname_len = (fname) ? (uint) strlen(fname) : 0;
  sql_ex.field_term = (char*) ex->field_term->ptr();
  sql_ex.field_term_len = (uint8) ex->field_term->length();
  sql_ex.enclosed = (char*) ex->enclosed->ptr();
  sql_ex.enclosed_len = (uint8) ex->enclosed->length();
  sql_ex.line_term = (char*) ex->line_term->ptr();
  sql_ex.line_term_len = (uint8) ex->line_term->length();
  sql_ex.line_start = (char*) ex->line_start->ptr();
  sql_ex.line_start_len = (uint8) ex->line_start->length();
  sql_ex.escaped = (char*) ex->escaped->ptr();
  sql_ex.escaped_len = (uint8) ex->escaped->length();
  sql_ex.opt_flags = 0;
  sql_ex.cached_new_format = -1;
4019
    
4020
  if (ex->dumpfile)
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4021
    sql_ex.opt_flags|= DUMPFILE_FLAG;
4022
  if (ex->opt_enclosed)
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4023
    sql_ex.opt_flags|= OPT_ENCLOSED_FLAG;
4024

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4025
  sql_ex.empty_flags= 0;
4026

4027
  switch (handle_dup) {
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4028
  case DUP_REPLACE:
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4029
    sql_ex.opt_flags|= REPLACE_FLAG;
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4030 4031 4032 4033
    break;
  case DUP_UPDATE:				// Impossible here
  case DUP_ERROR:
    break;	
4034
  }
4035 4036
  if (ignore)
    sql_ex.opt_flags|= IGNORE_FLAG;
4037

4038 4039 4040 4041 4042 4043 4044 4045 4046 4047
  if (!ex->field_term->length())
    sql_ex.empty_flags |= FIELD_TERM_EMPTY;
  if (!ex->enclosed->length())
    sql_ex.empty_flags |= ENCLOSED_EMPTY;
  if (!ex->line_term->length())
    sql_ex.empty_flags |= LINE_TERM_EMPTY;
  if (!ex->line_start->length())
    sql_ex.empty_flags |= LINE_START_EMPTY;
  if (!ex->escaped->length())
    sql_ex.empty_flags |= ESCAPED_EMPTY;
4048
    
4049
  skip_lines = ex->skip_lines;
4050

4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061
  List_iterator<Item> li(fields_arg);
  field_lens_buf.length(0);
  fields_buf.length(0);
  Item* item;
  while ((item = li++))
  {
    num_fields++;
    uchar len = (uchar) strlen(item->name);
    field_block_len += len + 1;
    fields_buf.append(item->name, len + 1);
    field_lens_buf.append((char*)&len, 1);
4062 4063
  }

4064 4065 4066
  field_lens = (const uchar*)field_lens_buf.ptr();
  fields = fields_buf.ptr();
}
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4067
#endif /* !MYSQL_CLIENT */
4068

4069

4070 4071
/**
  @note
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4072 4073
    The caller must do buf[event_len] = 0 before he starts using the
    constructed event.
4074
*/
4075 4076 4077 4078
Load_log_event::Load_log_event(const char *buf, uint event_len,
                               const Format_description_log_event *description_event)
  :Log_event(buf, description_event), num_fields(0), fields(0),
   field_lens(0),field_block_len(0),
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4079
   table_name(0), db(0), fname(0), local_fname(FALSE)
bk@work.mysql.com's avatar
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4080
{
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monty@mysql.com committed
4081
  DBUG_ENTER("Load_log_event");
4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093
  /*
    I (Guilhem) manually tested replication of LOAD DATA INFILE for 3.23->5.0,
    4.0->5.0 and 5.0->5.0 and it works.
  */
  if (event_len)
    copy_log_event(buf, event_len,
                   ((buf[EVENT_TYPE_OFFSET] == LOAD_EVENT) ?
                    LOAD_HEADER_LEN + 
                    description_event->common_header_len :
                    LOAD_HEADER_LEN + LOG_EVENT_HEADER_LEN),
                   description_event);
  /* otherwise it's a derived class, will call copy_log_event() itself */
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4094
  DBUG_VOID_RETURN;
4095 4096
}

4097

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4098
/*
4099
  Load_log_event::copy_log_event()
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4100
*/
4101

4102
int Load_log_event::copy_log_event(const char *buf, ulong event_len,
4103 4104
                                   int body_offset,
                                   const Format_description_log_event *description_event)
4105
{
4106
  DBUG_ENTER("Load_log_event::copy_log_event");
4107
  uint data_len;
4108
  char* buf_end = (char*)buf + event_len;
4109 4110
  /* this is the beginning of the post-header */
  const char* data_head = buf + description_event->common_header_len;
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4111
  slave_proxy_id= thread_id= uint4korr(data_head + L_THREAD_ID_OFFSET);
4112 4113 4114 4115 4116
  exec_time = uint4korr(data_head + L_EXEC_TIME_OFFSET);
  skip_lines = uint4korr(data_head + L_SKIP_LINES_OFFSET);
  table_name_len = (uint)data_head[L_TBL_LEN_OFFSET];
  db_len = (uint)data_head[L_DB_LEN_OFFSET];
  num_fields = uint4korr(data_head + L_NUM_FIELDS_OFFSET);
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4117
	  
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4118
  if ((int) event_len < body_offset)
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monty@mysql.com committed
4119
    DBUG_RETURN(1);
4120 4121 4122 4123
  /*
    Sql_ex.init() on success returns the pointer to the first byte after
    the sql_ex structure, which is the start of field lengths array.
  */
4124 4125 4126
  if (!(field_lens= (uchar*)sql_ex.init((char*)buf + body_offset,
                                        buf_end,
                                        buf[EVENT_TYPE_OFFSET] != LOAD_EVENT)))
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4127
    DBUG_RETURN(1);
4128
  
4129
  data_len = event_len - body_offset;
4130
  if (num_fields > data_len) // simple sanity check against corruption
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4131
    DBUG_RETURN(1);
4132
  for (uint i = 0; i < num_fields; i++)
4133
    field_block_len += (uint)field_lens[i] + 1;
4134

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4135 4136 4137 4138
  fields = (char*)field_lens + num_fields;
  table_name  = fields + field_block_len;
  db = table_name + table_name_len + 1;
  fname = db + db_len + 1;
4139 4140
  fname_len = strlen(fname);
  // null termination is accomplished by the caller doing buf[event_len]=0
4141

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4142
  DBUG_RETURN(0);
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4143 4144 4145
}


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monty@narttu.mysql.fi committed
4146
/*
4147
  Load_log_event::print()
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4148
*/
4149 4150

#ifdef MYSQL_CLIENT
4151
void Load_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4152
{
4153
  print(file, print_event_info, 0);
4154 4155
}

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4156

4157
void Load_log_event::print(FILE* file_arg, PRINT_EVENT_INFO* print_event_info,
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4158
			   bool commented)
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4159
{
4160 4161
  Write_on_release_cache cache(&print_event_info->head_cache, file_arg);

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4162
  DBUG_ENTER("Load_log_event::print");
4163
  if (!print_event_info->short_form)
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bk@work.mysql.com committed
4164
  {
4165 4166 4167
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tQuery\tthread_id=%ld\texec_time=%ld\n",
                thread_id, exec_time);
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4168 4169
  }

4170
  bool different_db= 1;
4171
  if (db)
4172
  {
4173 4174 4175 4176 4177 4178
    /*
      If the database is different from the one of the previous statement, we
      need to print the "use" command, and we update the last_db.
      But if commented, the "use" is going to be commented so we should not
      update the last_db.
    */
4179
    if ((different_db= memcmp(print_event_info->db, db, db_len + 1)) &&
4180
        !commented)
4181
      memcpy(print_event_info->db, db, db_len + 1);
4182
  }
4183
  
4184
  if (db && db[0] && different_db)
4185
    my_b_printf(&cache, "%suse %s%s\n", 
4186
            commented ? "# " : "",
4187
            db, print_event_info->delimiter);
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bk@work.mysql.com committed
4188

4189
  if (flags & LOG_EVENT_THREAD_SPECIFIC_F)
4190
    my_b_printf(&cache,"%sSET @@session.pseudo_thread_id=%lu%s\n",
4191 4192
            commented ? "# " : "", (ulong)thread_id,
            print_event_info->delimiter);
4193
  my_b_printf(&cache, "%sLOAD DATA ",
4194
              commented ? "# " : "");
4195
  if (check_fname_outside_temp_buf())
4196 4197
    my_b_printf(&cache, "LOCAL ");
  my_b_printf(&cache, "INFILE '%-*s' ", fname_len, fname);
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4198

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monty@narttu.mysql.fi committed
4199
  if (sql_ex.opt_flags & REPLACE_FLAG)
4200
    my_b_printf(&cache," REPLACE ");
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monty@narttu.mysql.fi committed
4201
  else if (sql_ex.opt_flags & IGNORE_FLAG)
4202
    my_b_printf(&cache," IGNORE ");
bk@work.mysql.com's avatar
bk@work.mysql.com committed
4203
  
4204 4205 4206
  my_b_printf(&cache, "INTO TABLE `%s`", table_name);
  my_b_printf(&cache, " FIELDS TERMINATED BY ");
  pretty_print_str(&cache, sql_ex.field_term, sql_ex.field_term_len);
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4207

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monty@mysql.com committed
4208
  if (sql_ex.opt_flags & OPT_ENCLOSED_FLAG)
4209 4210 4211
    my_b_printf(&cache," OPTIONALLY ");
  my_b_printf(&cache, " ENCLOSED BY ");
  pretty_print_str(&cache, sql_ex.enclosed, sql_ex.enclosed_len);
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4212
     
4213 4214
  my_b_printf(&cache, " ESCAPED BY ");
  pretty_print_str(&cache, sql_ex.escaped, sql_ex.escaped_len);
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4215
     
4216 4217
  my_b_printf(&cache," LINES TERMINATED BY ");
  pretty_print_str(&cache, sql_ex.line_term, sql_ex.line_term_len);
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4218

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bk@work.mysql.com committed
4219

4220
  if (sql_ex.line_start)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
4221
  {
4222 4223
    my_b_printf(&cache," STARTING BY ");
    pretty_print_str(&cache, sql_ex.line_start, sql_ex.line_start_len);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
4224
  }
4225
  if ((long) skip_lines > 0)
4226
    my_b_printf(&cache, " IGNORE %ld LINES", (long) skip_lines);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
4227

4228 4229 4230 4231
  if (num_fields)
  {
    uint i;
    const char* field = fields;
4232
    my_b_printf(&cache, " (");
4233
    for (i = 0; i < num_fields; i++)
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bk@work.mysql.com committed
4234
    {
4235
      if (i)
4236 4237
	my_b_printf(&cache, ",");
      my_b_printf(&cache, field);
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4238
	  
4239
      field += field_lens[i]  + 1;
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bk@work.mysql.com committed
4240
    }
4241
    my_b_printf(&cache, ")");
4242
  }
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bk@work.mysql.com committed
4243

4244
  my_b_printf(&cache, "%s\n", print_event_info->delimiter);
monty@mysql.com's avatar
monty@mysql.com committed
4245
  DBUG_VOID_RETURN;
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bk@work.mysql.com committed
4246
}
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monty@narttu.mysql.fi committed
4247
#endif /* MYSQL_CLIENT */
4248

4249
#ifndef MYSQL_CLIENT
4250

4251
/**
4252
  Load_log_event::set_fields()
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lars@mysql.com committed
4253

4254 4255 4256 4257 4258
  @note
    This function can not use the member variable 
    for the database, since LOAD DATA INFILE on the slave
    can be for a different database than the current one.
    This is the reason for the affected_db argument to this method.
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4259
*/
4260

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4261
void Load_log_event::set_fields(const char* affected_db, 
4262 4263
				List<Item> &field_list,
                                Name_resolution_context *context)
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bk@work.mysql.com committed
4264 4265
{
  uint i;
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4266
  const char* field = fields;
4267
  for (i= 0; i < num_fields; i++)
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monty@hundin.mysql.fi committed
4268
  {
4269 4270
    field_list.push_back(new Item_field(context,
                                        affected_db, table_name, field));
4271
    field+= field_lens[i]  + 1;
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4272
  }
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4273
}
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4274
#endif /* !MYSQL_CLIENT */
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4275 4276


hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4277
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301
/**
  Does the data loading job when executing a LOAD DATA on the slave.

  @param net
  @param rli
  @param use_rli_only_for_errors     If set to 1, rli is provided to
                                     Load_log_event::exec_event only for this
                                     function to have RPL_LOG_NAME and
                                     rli->last_slave_error, both being used by
                                     error reports. rli's position advancing
                                     is skipped (done by the caller which is
                                     Execute_load_log_event::exec_event).
                                     If set to 0, rli is provided for full use,
                                     i.e. for error reports and position
                                     advancing.

  @todo
    fix this; this can be done by testing rules in
    Create_file_log_event::exec_event() and then discarding Append_block and
    al.
  @todo
    this is a bug - this needs to be moved to the I/O thread

  @retval
4302
    0           Success
4303 4304
  @retval
    1           Failure
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monty@mashka.mysql.fi committed
4305
*/
4306

4307
int Load_log_event::do_apply_event(NET* net, Relay_log_info const *rli,
4308
                                   bool use_rli_only_for_errors)
4309
{
4310 4311 4312 4313
  LEX_STRING new_db;
  new_db.length= db_len;
  new_db.str= (char *) rpl_filter->get_rewrite_db(db, &new_db.length);
  thd->set_db(new_db.str, new_db.length);
4314
  DBUG_ASSERT(thd->query == 0);
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monty@mysql.com committed
4315
  thd->query_length= 0;                         // Should not be needed
4316
  thd->is_slave_error= 0;
4317
  clear_all_errors(thd, const_cast<Relay_log_info*>(rli));
4318

4319
  /* see Query_log_event::do_apply_event() and BUG#13360 */
4320
  DBUG_ASSERT(!rli->m_table_map.count());
4321
  /*
4322
    Usually lex_start() is called by mysql_parse(), but we need it here
4323 4324
    as the present method does not call mysql_parse().
  */
4325 4326 4327
  lex_start(thd);
  mysql_reset_thd_for_next_command(thd);

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monty@mysql.com committed
4328
  if (!use_rli_only_for_errors)
4329
  {
4330 4331
    /*
      Saved for InnoDB, see comment in
4332
      Query_log_event::do_apply_event()
4333
    */
4334
    const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos;
4335
    DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));
4336
  }
4337 4338
 
   /*
4339 4340 4341 4342 4343 4344 4345
    We test replicate_*_db rules. Note that we have already prepared
    the file to load, even if we are going to ignore and delete it
    now. So it is possible that we did a lot of disk writes for
    nothing. In other words, a big LOAD DATA INFILE on the master will
    still consume a lot of space on the slave (space in the relay log
    + space of temp files: twice the space of the file to load...)
    even if it will finally be ignored.  TODO: fix this; this can be
4346
    done by testing rules in Create_file_log_event::do_apply_event()
4347 4348 4349
    and then discarding Append_block and al. Another way is do the
    filtering in the I/O thread (more efficient: no disk writes at
    all).
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lars@mysql.com committed
4350 4351 4352 4353 4354 4355 4356 4357


    Note:   We do not need to execute reset_one_shot_variables() if this
            db_ok() test fails.
    Reason: The db stored in binlog events is the same for SET and for
            its companion query.  If the SET is ignored because of
            db_ok(), the companion query will also be ignored, and if
            the companion query is ignored in the db_ok() test of
4358
            ::do_apply_event(), then the companion SET also have so
4359
            we don't need to reset_one_shot_variables().
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4360
  */
4361
  if (rpl_filter->db_ok(thd->db))
4362
  {
4363 4364
    thd->set_time((time_t)when);
    VOID(pthread_mutex_lock(&LOCK_thread_count));
4365
    thd->query_id = next_query_id();
4366
    VOID(pthread_mutex_unlock(&LOCK_thread_count));
4367 4368 4369 4370 4371 4372
    /*
      Initing thd->row_count is not necessary in theory as this variable has no
      influence in the case of the slave SQL thread (it is used to generate a
      "data truncated" warning but which is absorbed and never gets to the
      error log); still we init it to avoid a Valgrind message.
    */
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monty@mysql.com committed
4373
    mysql_reset_errors(thd, 0);
4374 4375 4376

    TABLE_LIST tables;
    bzero((char*) &tables,sizeof(tables));
4377
    tables.db= thd->strmake(thd->db, thd->db_length);
4378
    tables.alias = tables.table_name = (char*) table_name;
4379
    tables.lock_type = TL_WRITE;
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monty@narttu.mysql.fi committed
4380
    tables.updating= 1;
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bell@sanja.is.com.ua committed
4381

4382
    // the table will be opened in mysql_load    
4383
    if (rpl_filter->is_on() && !rpl_filter->tables_ok(thd->db, &tables))
4384 4385 4386 4387 4388 4389 4390 4391
    {
      // TODO: this is a bug - this needs to be moved to the I/O thread
      if (net)
        skip_load_data_infile(net);
    }
    else
    {
      char llbuff[22];
4392
      char *end;
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monty@narttu.mysql.fi committed
4393
      enum enum_duplicates handle_dup;
4394
      bool ignore= 0;
4395 4396
      char *load_data_query;

4397
      /*
4398 4399
        Forge LOAD DATA INFILE query which will be used in SHOW PROCESS LIST
        and written to slave's binlog if binlogging is on.
4400
      */
4401
      if (!(load_data_query= (char *)thd->alloc(get_query_buffer_length() + 1)))
4402
      {
4403 4404 4405 4406 4407
        /*
          This will set thd->fatal_error in case of OOM. So we surely will notice
          that something is wrong.
        */
        goto error;
4408
      }
4409 4410 4411 4412 4413 4414 4415

      print_query(FALSE, load_data_query, &end, (char **)&thd->lex->fname_start,
                  (char **)&thd->lex->fname_end);
      *end= 0;
      thd->query_length= end - load_data_query;
      thd->query= load_data_query;

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monty@narttu.mysql.fi committed
4416
      if (sql_ex.opt_flags & REPLACE_FLAG)
4417
      {
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monty@narttu.mysql.fi committed
4418
	handle_dup= DUP_REPLACE;
4419
      }
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monty@narttu.mysql.fi committed
4420
      else if (sql_ex.opt_flags & IGNORE_FLAG)
4421 4422 4423 4424
      {
        ignore= 1;
        handle_dup= DUP_ERROR;
      }
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4425
      else
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4426
      {
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4427
        /*
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4428
	  When replication is running fine, if it was DUP_ERROR on the
4429
          master then we could choose IGNORE here, because if DUP_ERROR
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monty@narttu.mysql.fi committed
4430
          suceeded on master, and data is identical on the master and slave,
4431
          then there should be no uniqueness errors on slave, so IGNORE is
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4432
          the same as DUP_ERROR. But in the unlikely case of uniqueness errors
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monty@narttu.mysql.fi committed
4433 4434 4435
          (because the data on the master and slave happen to be different
	  (user error or bug), we want LOAD DATA to print an error message on
	  the slave to discover the problem.
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4436 4437

          If reading from net (a 3.23 master), mysql_load() will change this
4438
          to IGNORE.
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monty@narttu.mysql.fi committed
4439 4440
        */
        handle_dup= DUP_ERROR;
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monty@narttu.mysql.fi committed
4441
      }
4442 4443 4444 4445 4446 4447 4448 4449 4450 4451
      /*
        We need to set thd->lex->sql_command and thd->lex->duplicates
        since InnoDB tests these variables to decide if this is a LOAD
        DATA ... REPLACE INTO ... statement even though mysql_parse()
        is not called.  This is not needed in 5.0 since there the LOAD
        DATA ... statement is replicated using mysql_parse(), which
        sets the thd->lex fields correctly.
      */
      thd->lex->sql_command= SQLCOM_LOAD;
      thd->lex->duplicates= handle_dup;
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monty@narttu.mysql.fi committed
4452

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4453
      sql_exchange ex((char*)fname, sql_ex.opt_flags & DUMPFILE_FLAG);
4454 4455 4456 4457 4458
      String field_term(sql_ex.field_term,sql_ex.field_term_len,log_cs);
      String enclosed(sql_ex.enclosed,sql_ex.enclosed_len,log_cs);
      String line_term(sql_ex.line_term,sql_ex.line_term_len,log_cs);
      String line_start(sql_ex.line_start,sql_ex.line_start_len,log_cs);
      String escaped(sql_ex.escaped,sql_ex.escaped_len, log_cs);
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4459 4460 4461 4462 4463
      ex.field_term= &field_term;
      ex.enclosed= &enclosed;
      ex.line_term= &line_term;
      ex.line_start= &line_start;
      ex.escaped= &escaped;
4464 4465 4466 4467 4468 4469

      ex.opt_enclosed = (sql_ex.opt_flags & OPT_ENCLOSED_FLAG);
      if (sql_ex.empty_flags & FIELD_TERM_EMPTY)
	ex.field_term->length(0);

      ex.skip_lines = skip_lines;
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
4470
      List<Item> field_list;
4471 4472
      thd->lex->select_lex.context.resolve_in_table_list_only(&tables);
      set_fields(tables.db, field_list, &thd->lex->select_lex.context);
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monty@narttu.mysql.fi committed
4473
      thd->variables.pseudo_thread_id= thread_id;
4474 4475 4476 4477 4478 4479 4480 4481 4482
      if (net)
      {
	// mysql_load will use thd->net to read the file
	thd->net.vio = net->vio;
	/*
	  Make sure the client does not get confused about the packet sequence
	*/
	thd->net.pkt_nr = net->pkt_nr;
      }
4483
      /*
4484
        It is safe to use tmp_list twice because we are not going to
4485 4486
        update it inside mysql_load().
      */
4487 4488
      List<Item> tmp_list;
      if (mysql_load(thd, &ex, &tables, field_list, tmp_list, tmp_list,
4489
                     handle_dup, ignore, net != 0))
4490
        thd->is_slave_error= 1;
4491
      if (thd->cuted_fields)
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
4492
      {
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
4493
	/* log_pos is the position of the LOAD event in the master log */
lars@mysql.com's avatar
lars@mysql.com committed
4494 4495 4496 4497 4498 4499 4500
        sql_print_warning("Slave: load data infile on table '%s' at "
                          "log position %s in log '%s' produced %ld "
                          "warning(s). Default database: '%s'",
                          (char*) table_name,
                          llstr(log_pos,llbuff), RPL_LOG_NAME, 
                          (ulong) thd->cuted_fields,
                          print_slave_db_safe(thd->db));
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monty@mashka.mysql.fi committed
4501
      }
4502 4503 4504
      if (net)
        net->pkt_nr= thd->net.pkt_nr;
    }
4505 4506
  }
  else
4507 4508 4509 4510 4511 4512 4513 4514 4515
  {
    /*
      We will just ask the master to send us /dev/null if we do not
      want to load the data.
      TODO: this a bug - needs to be done in I/O thread
    */
    if (net)
      skip_load_data_infile(net);
  }
4516 4517

error:
4518
  thd->net.vio = 0; 
4519
  const char *remember_db= thd->db;
4520
  VOID(pthread_mutex_lock(&LOCK_thread_count));
4521
  thd->catalog= 0;
4522
  thd->set_db(NULL, 0);                   /* will free the current database */
4523
  thd->query= 0;
4524
  thd->query_length= 0;
4525
  VOID(pthread_mutex_unlock(&LOCK_thread_count));
4526
  close_thread_tables(thd);
4527 4528

  DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error",
4529
                  thd->is_slave_error= 0; thd->is_fatal_error= 1;);
4530

4531
  if (thd->is_slave_error)
4532
  {
4533
    /* this err/sql_errno code is copy-paste from net_send_error() */
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4534 4535
    const char *err;
    int sql_errno;
4536 4537 4538 4539 4540
    if (thd->is_error())
    {
      err= thd->main_da.message();
      sql_errno= thd->main_da.sql_errno();
    }
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monty@narttu.mysql.fi committed
4541 4542 4543 4544 4545
    else
    {
      sql_errno=ER_UNKNOWN_ERROR;
      err=ER(sql_errno);       
    }
4546
    rli->report(ERROR_LEVEL, sql_errno,"\
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monty@narttu.mysql.fi committed
4547
Error '%s' running LOAD DATA INFILE on table '%s'. Default database: '%s'",
4548
                    err, (char*)table_name, print_slave_db_safe(remember_db));
4549
    free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
4550 4551
    return 1;
  }
4552
  free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
4553

4554
  if (thd->is_fatal_error)
4555
  {
4556 4557 4558 4559 4560 4561 4562 4563 4564
    char buf[256];
    my_snprintf(buf, sizeof(buf),
                "Running LOAD DATA INFILE on table '%-.64s'."
                " Default database: '%-.64s'",
                (char*)table_name,
                print_slave_db_safe(remember_db));

    rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
                ER(ER_SLAVE_FATAL_ERROR), buf);
4565 4566 4567
    return 1;
  }

4568
  return ( use_rli_only_for_errors ? 0 : Log_event::do_apply_event(rli) ); 
4569
}
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4570
#endif
4571 4572


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monty@mashka.mysql.fi committed
4573
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4574
  Rotate_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
4575
**************************************************************************/
4576

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monty@narttu.mysql.fi committed
4577
/*
4578
  Rotate_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4579
*/
4580

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4581
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4582
void Rotate_log_event::pack_info(Protocol *protocol)
4583
{
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4584
  char buf1[256], buf[22];
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4585
  String tmp(buf1, sizeof(buf1), log_cs);
4586
  tmp.length(0);
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4587
  tmp.append(new_log_ident, ident_len);
4588
  tmp.append(STRING_WITH_LEN(";pos="));
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monty@narttu.mysql.fi committed
4589 4590
  tmp.append(llstr(pos,buf));
  protocol->store(tmp.ptr(), tmp.length(), &my_charset_bin);
4591
}
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4592
#endif
4593

4594

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4595
/*
4596
  Rotate_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4597
*/
4598 4599

#ifdef MYSQL_CLIENT
4600
void Rotate_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4601
{
4602
  char buf[22];
4603 4604
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);
4605

4606
  if (print_event_info->short_form)
4607
    return;
4608 4609
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\tRotate to ");
4610
  if (new_log_ident)
4611
    my_b_write(&cache, (uchar*) new_log_ident, (uint)ident_len);
4612
  my_b_printf(&cache, "  pos: %s\n", llstr(pos, buf));
4613
}
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monty@mashka.mysql.fi committed
4614
#endif /* MYSQL_CLIENT */
4615 4616


4617

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4618
/*
4619
  Rotate_log_event::Rotate_log_event() (2 constructors)
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monty@narttu.mysql.fi committed
4620
*/
4621

4622 4623

#ifndef MYSQL_CLIENT
4624
Rotate_log_event::Rotate_log_event(const char* new_log_ident_arg,
4625 4626 4627 4628 4629 4630 4631 4632
                                   uint ident_len_arg, ulonglong pos_arg,
                                   uint flags_arg)
  :Log_event(), new_log_ident(new_log_ident_arg),
   pos(pos_arg),ident_len(ident_len_arg ? ident_len_arg :
                          (uint) strlen(new_log_ident_arg)), flags(flags_arg)
{
#ifndef DBUG_OFF
  char buff[22];
4633
  DBUG_ENTER("Rotate_log_event::Rotate_log_event(...,flags)");
4634 4635
  DBUG_PRINT("enter",("new_log_ident: %s  pos: %s  flags: %lu", new_log_ident_arg,
                      llstr(pos_arg, buff), (ulong) flags));
4636 4637
#endif
  if (flags & DUP_NAME)
4638
    new_log_ident= my_strndup(new_log_ident_arg, ident_len, MYF(MY_WME));
4639 4640
  if (flags & RELAY_LOG)
    set_relay_log_event();
4641 4642 4643 4644 4645
  DBUG_VOID_RETURN;
}
#endif


4646 4647
Rotate_log_event::Rotate_log_event(const char* buf, uint event_len,
                                   const Format_description_log_event* description_event)
4648
  :Log_event(buf, description_event) ,new_log_ident(0), flags(DUP_NAME)
4649
{
4650
  DBUG_ENTER("Rotate_log_event::Rotate_log_event(char*,...)");
4651
  // The caller will ensure that event_len is what we have at EVENT_LEN_OFFSET
4652 4653
  uint8 header_size= description_event->common_header_len;
  uint8 post_header_len= description_event->post_header_len[ROTATE_EVENT-1];
4654 4655
  uint ident_offset;
  if (event_len < header_size)
monty@mysql.com's avatar
monty@mysql.com committed
4656
    DBUG_VOID_RETURN;
4657
  buf += header_size;
4658 4659 4660 4661
  pos = post_header_len ? uint8korr(buf + R_POS_OFFSET) : 4;
  ident_len = (uint)(event_len -
                     (header_size+post_header_len)); 
  ident_offset = post_header_len; 
4662
  set_if_smaller(ident_len,FN_REFLEN-1);
4663
  new_log_ident= my_strndup(buf + ident_offset, (uint) ident_len, MYF(MY_WME));
4664
  DBUG_PRINT("debug", ("new_log_ident: '%s'", new_log_ident));
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monty@mysql.com committed
4665
  DBUG_VOID_RETURN;
4666
}
4667 4668


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4669
/*
4670
  Rotate_log_event::write()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4671
*/
4672

4673
#ifndef MYSQL_CLIENT
4674
bool Rotate_log_event::write(IO_CACHE* file)
4675
{
4676
  char buf[ROTATE_HEADER_LEN];
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monty@mashka.mysql.fi committed
4677
  int8store(buf + R_POS_OFFSET, pos);
4678
  return (write_header(file, ROTATE_HEADER_LEN + ident_len) ||
4679 4680
          my_b_safe_write(file, (uchar*)buf, ROTATE_HEADER_LEN) ||
          my_b_safe_write(file, (uchar*)new_log_ident, (uint) ident_len));
4681
}
4682
#endif
4683

4684

4685
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4686

4687 4688
/*
  Got a rotate log event from the master.
4689

4690 4691
  This is mainly used so that we can later figure out the logname and
  position for the master.
4692

4693 4694 4695
  We can't rotate the slave's BINlog as this will cause infinitive rotations
  in a A -> B -> A setup.
  The NOTES below is a wrong comment which will disappear when 4.1 is merged.
4696

4697
  @retval
4698
    0	ok
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monty@narttu.mysql.fi committed
4699
*/
4700
int Rotate_log_event::do_update_pos(Relay_log_info *rli)
4701
{
4702
  DBUG_ENTER("Rotate_log_event::do_update_pos");
4703 4704 4705 4706
#ifndef DBUG_OFF
  char buf[32];
#endif

4707 4708
  DBUG_PRINT("info", ("server_id=%lu; ::server_id=%lu",
                      (ulong) this->server_id, (ulong) ::server_id));
4709 4710
  DBUG_PRINT("info", ("new_log_ident: %s", this->new_log_ident));
  DBUG_PRINT("info", ("pos: %s", llstr(this->pos, buf)));
4711

guilhem@gbichot2's avatar
guilhem@gbichot2 committed
4712
  /*
4713 4714 4715 4716
    If we are in a transaction or in a group: the only normal case is
    when the I/O thread was copying a big transaction, then it was
    stopped and restarted: we have this in the relay log:

guilhem@gbichot2's avatar
guilhem@gbichot2 committed
4717 4718 4719 4720 4721
    BEGIN
    ...
    ROTATE (a fake one)
    ...
    COMMIT or ROLLBACK
4722 4723 4724 4725

    In that case, we don't want to touch the coordinates which
    correspond to the beginning of the transaction.  Starting from
    5.0.0, there also are some rotates from the slave itself, in the
4726
    relay log, which shall not change the group positions.
guilhem@gbichot2's avatar
guilhem@gbichot2 committed
4727
  */
4728
  if ((server_id != ::server_id || rli->replicate_same_server_id) &&
4729
      !is_relay_log_event() &&
4730
      !rli->is_in_group())
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4731
  {
4732
    pthread_mutex_lock(&rli->data_lock);
4733 4734 4735 4736
    DBUG_PRINT("info", ("old group_master_log_name: '%s'  "
                        "old group_master_log_pos: %lu",
                        rli->group_master_log_name,
                        (ulong) rli->group_master_log_pos));
4737 4738
    memcpy(rli->group_master_log_name, new_log_ident, ident_len+1);
    rli->notify_group_master_log_name_update();
4739
    rli->inc_group_relay_log_pos(pos, TRUE /* skip_lock */);
4740 4741
    DBUG_PRINT("info", ("new group_master_log_name: '%s'  "
                        "new group_master_log_pos: %lu",
4742
                        rli->group_master_log_name,
4743
                        (ulong) rli->group_master_log_pos));
4744 4745 4746
    pthread_mutex_unlock(&rli->data_lock);
    flush_relay_log_info(rli);
    
4747
    /*
4748 4749
      Reset thd->options and sql_mode etc, because this could be the signal of
      a master's downgrade from 5.0 to 4.0.
4750 4751 4752 4753 4754
      However, no need to reset description_event_for_exec: indeed, if the next
      master is 5.0 (even 5.0.1) we will soon get a Format_desc; if the next
      master is 4.0 then the events are in the slave's format (conversion).
    */
    set_slave_thread_options(thd);
4755
    set_slave_thread_default_charset(thd, rli);
4756
    thd->variables.sql_mode= global_system_variables.sql_mode;
4757 4758
    thd->variables.auto_increment_increment=
      thd->variables.auto_increment_offset= 1;
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monty@narttu.mysql.fi committed
4759
  }
4760 4761 4762
  else
    rli->inc_event_relay_log_pos();

4763

4764
  DBUG_RETURN(0);
4765
}
4766

4767 4768

Log_event::enum_skip_reason
4769
Rotate_log_event::do_shall_skip(Relay_log_info *rli)
4770
{
4771
  enum_skip_reason reason= Log_event::do_shall_skip(rli);
4772 4773

  switch (reason) {
4774
  case Log_event::EVENT_SKIP_NOT:
4775
  case Log_event::EVENT_SKIP_COUNT:
4776
    return Log_event::EVENT_SKIP_NOT;
4777

4778 4779
  case Log_event::EVENT_SKIP_IGNORE:
    return Log_event::EVENT_SKIP_IGNORE;
4780 4781
  }
  DBUG_ASSERT(0);
4782
  return Log_event::EVENT_SKIP_NOT;             // To keep compiler happy
4783 4784
}

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4785
#endif
4786 4787


monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
4788
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4789
	Intvar_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
4790
**************************************************************************/
4791

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4792
/*
4793
  Intvar_log_event::pack_info()
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monty@narttu.mysql.fi committed
4794
*/
4795

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4796
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4797
void Intvar_log_event::pack_info(Protocol *protocol)
4798
{
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monty@narttu.mysql.fi committed
4799 4800
  char buf[256], *pos;
  pos= strmake(buf, get_var_type_name(), sizeof(buf)-23);
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monty@mashka.mysql.fi committed
4801
  *pos++= '=';
4802
  pos= longlong10_to_str(val, pos, -10);
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monty@mashka.mysql.fi committed
4803
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
4804
}
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4805
#endif
4806

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monty@narttu.mysql.fi committed
4807

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monty@narttu.mysql.fi committed
4808
/*
4809
  Intvar_log_event::Intvar_log_event()
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monty@narttu.mysql.fi committed
4810
*/
4811

4812 4813 4814
Intvar_log_event::Intvar_log_event(const char* buf,
                                   const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
4815
{
4816 4817 4818
  buf+= description_event->common_header_len;
  type= buf[I_TYPE_OFFSET];
  val= uint8korr(buf+I_VAL_OFFSET);
4819 4820
}

4821

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4822
/*
4823
  Intvar_log_event::get_var_type_name()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
4824
*/
4825 4826

const char* Intvar_log_event::get_var_type_name()
4827
{
4828 4829 4830 4831 4832
  switch(type) {
  case LAST_INSERT_ID_EVENT: return "LAST_INSERT_ID";
  case INSERT_ID_EVENT: return "INSERT_ID";
  default: /* impossible */ return "UNKNOWN";
  }
4833 4834
}

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monty@narttu.mysql.fi committed
4835

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monty@narttu.mysql.fi committed
4836
/*
4837
  Intvar_log_event::write()
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monty@narttu.mysql.fi committed
4838
*/
4839

4840
#ifndef MYSQL_CLIENT
4841
bool Intvar_log_event::write(IO_CACHE* file)
4842
{
4843 4844
  uchar buf[9];
  buf[I_TYPE_OFFSET]= (uchar) type;
4845
  int8store(buf + I_VAL_OFFSET, val);
4846 4847
  return (write_header(file, sizeof(buf)) ||
          my_b_safe_write(file, buf, sizeof(buf)));
4848
}
4849
#endif
4850

4851

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4852
/*
4853
  Intvar_log_event::print()
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4854
*/
4855 4856

#ifdef MYSQL_CLIENT
4857
void Intvar_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4858
{
4859 4860 4861
  char llbuff[22];
  const char *msg;
  LINT_INIT(msg);
4862 4863
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);
4864

4865
  if (!print_event_info->short_form)
4866
  {
4867 4868
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tIntvar\n");
4869
  }
4870

4871
  my_b_printf(&cache, "SET ");
4872 4873 4874 4875 4876 4877 4878
  switch (type) {
  case LAST_INSERT_ID_EVENT:
    msg="LAST_INSERT_ID";
    break;
  case INSERT_ID_EVENT:
    msg="INSERT_ID";
    break;
4879 4880 4881 4882
  case INVALID_INT_EVENT:
  default: // cannot happen
    msg="INVALID_INT";
    break;
4883
  }
4884 4885
  my_b_printf(&cache, "%s=%s%s\n",
              msg, llstr(val,llbuff), print_event_info->delimiter);
4886
}
4887
#endif
4888

4889

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4890
/*
4891
  Intvar_log_event::do_apply_event()
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4892
*/
4893

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4894
#if defined(HAVE_REPLICATION)&& !defined(MYSQL_CLIENT)
4895
int Intvar_log_event::do_apply_event(Relay_log_info const *rli)
4896
{
4897 4898 4899 4900
  /*
    We are now in a statement until the associated query log event has
    been processed.
   */
4901
  const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
4902

4903 4904
  switch (type) {
  case LAST_INSERT_ID_EVENT:
4905 4906
    thd->stmt_depends_on_first_successful_insert_id_in_prev_stmt= 1;
    thd->first_successful_insert_id_in_prev_stmt= val;
4907 4908
    break;
  case INSERT_ID_EVENT:
4909
    thd->force_one_auto_inc_interval(val);
4910 4911
    break;
  }
4912 4913 4914
  return 0;
}

4915
int Intvar_log_event::do_update_pos(Relay_log_info *rli)
4916
{
4917
  rli->inc_event_relay_log_pos();
4918
  return 0;
4919
}
4920 4921 4922


Log_event::enum_skip_reason
4923
Intvar_log_event::do_shall_skip(Relay_log_info *rli)
4924 4925
{
  /*
4926 4927 4928 4929 4930 4931
    It is a common error to set the slave skip counter to 1 instead of
    2 when recovering from an insert which used a auto increment,
    rand, or user var.  Therefore, if the slave skip counter is 1, we
    just say that this event should be skipped by ignoring it, meaning
    that we do not change the value of the slave skip counter since it
    will be decreased by the following insert event.
4932
  */
4933
  return continue_group(rli);
4934 4935
}

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4936
#endif
4937

4938

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4939
/**************************************************************************
4940
  Rand_log_event methods
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4941
**************************************************************************/
4942

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4943
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4944
void Rand_log_event::pack_info(Protocol *protocol)
4945
{
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4946 4947 4948 4949 4950
  char buf1[256], *pos;
  pos= strmov(buf1,"rand_seed1=");
  pos= int10_to_str((long) seed1, pos, 10);
  pos= strmov(pos, ",rand_seed2=");
  pos= int10_to_str((long) seed2, pos, 10);
4951
  protocol->store(buf1, (uint) (pos-buf1), &my_charset_bin);
4952
}
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4953
#endif
4954 4955


4956 4957 4958
Rand_log_event::Rand_log_event(const char* buf,
                               const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
4959
{
4960 4961 4962
  buf+= description_event->common_header_len;
  seed1= uint8korr(buf+RAND_SEED1_OFFSET);
  seed2= uint8korr(buf+RAND_SEED2_OFFSET);
4963 4964
}

4965

4966
#ifndef MYSQL_CLIENT
4967
bool Rand_log_event::write(IO_CACHE* file)
4968
{
4969
  uchar buf[16];
4970 4971
  int8store(buf + RAND_SEED1_OFFSET, seed1);
  int8store(buf + RAND_SEED2_OFFSET, seed2);
4972 4973
  return (write_header(file, sizeof(buf)) ||
          my_b_safe_write(file, buf, sizeof(buf)));
4974
}
4975
#endif
4976

4977 4978

#ifdef MYSQL_CLIENT
4979
void Rand_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4980
{
4981 4982 4983
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

4984
  char llbuff[22],llbuff2[22];
4985
  if (!print_event_info->short_form)
4986
  {
4987 4988
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tRand\n");
4989
  }
4990 4991 4992
  my_b_printf(&cache, "SET @@RAND_SEED1=%s, @@RAND_SEED2=%s%s\n",
              llstr(seed1, llbuff),llstr(seed2, llbuff2),
              print_event_info->delimiter);
4993
}
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4994
#endif /* MYSQL_CLIENT */
4995

4996

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4997
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4998
int Rand_log_event::do_apply_event(Relay_log_info const *rli)
4999
{
5000 5001 5002 5003
  /*
    We are now in a statement until the associated query log event has
    been processed.
   */
5004
  const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
5005

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5006 5007
  thd->rand.seed1= (ulong) seed1;
  thd->rand.seed2= (ulong) seed2;
5008 5009 5010
  return 0;
}

5011
int Rand_log_event::do_update_pos(Relay_log_info *rli)
5012
{
5013
  rli->inc_event_relay_log_pos();
5014 5015
  return 0;
}
5016

5017 5018

Log_event::enum_skip_reason
5019
Rand_log_event::do_shall_skip(Relay_log_info *rli)
5020 5021
{
  /*
5022 5023 5024 5025 5026 5027
    It is a common error to set the slave skip counter to 1 instead of
    2 when recovering from an insert which used a auto increment,
    rand, or user var.  Therefore, if the slave skip counter is 1, we
    just say that this event should be skipped by ignoring it, meaning
    that we do not change the value of the slave skip counter since it
    will be decreased by the following insert event.
5028
  */
5029
  return continue_group(rli);
5030 5031
}

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5032
#endif /* !MYSQL_CLIENT */
5033

5034

5035 5036 5037 5038 5039 5040 5041
/**************************************************************************
  Xid_log_event methods
**************************************************************************/

#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
void Xid_log_event::pack_info(Protocol *protocol)
{
5042 5043
  char buf[128], *pos;
  pos= strmov(buf, "COMMIT /* xid=");
5044
  pos= longlong10_to_str(xid, pos, 10);
5045
  pos= strmov(pos, " */");
5046 5047 5048 5049
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
}
#endif

5050 5051 5052
/**
  @note
  It's ok not to use int8store here,
5053
  as long as xid_t::set(ulonglong) and
5054 5055
  xid_t::get_my_xid doesn't do it either.
  We don't care about actual values of xids as long as
5056 5057
  identical numbers compare identically
*/
5058 5059 5060 5061

Xid_log_event::
Xid_log_event(const char* buf,
              const Format_description_log_event *description_event)
5062 5063 5064
  :Log_event(buf, description_event)
{
  buf+= description_event->common_header_len;
5065
  memcpy((char*) &xid, buf, sizeof(xid));
5066 5067 5068
}


5069
#ifndef MYSQL_CLIENT
5070 5071
bool Xid_log_event::write(IO_CACHE* file)
{
5072
  DBUG_EXECUTE_IF("do_not_write_xid", return 0;);
5073
  return write_header(file, sizeof(xid)) ||
5074
         my_b_safe_write(file, (uchar*) &xid, sizeof(xid));
5075
}
5076
#endif
5077 5078 5079


#ifdef MYSQL_CLIENT
5080
void Xid_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
5081
{
5082 5083 5084
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

5085
  if (!print_event_info->short_form)
5086
  {
5087 5088 5089
    char buf[64];
    longlong10_to_str(xid, buf, 10);

5090 5091
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tXid = %s\n", buf);
5092
  }
5093
  my_b_printf(&cache, "COMMIT%s\n", print_event_info->delimiter);
5094 5095 5096 5097 5098
}
#endif /* MYSQL_CLIENT */


#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5099
int Xid_log_event::do_apply_event(Relay_log_info const *rli)
5100
{
5101
  /* For a slave Xid_log_event is COMMIT */
5102 5103
  general_log_print(thd, COM_QUERY,
                    "COMMIT /* implicit, from Xid_log_event */");
5104
  return end_trans(thd, COMMIT);
5105
}
5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116

Log_event::enum_skip_reason
Xid_log_event::do_shall_skip(Relay_log_info *rli)
{
  DBUG_ENTER("Xid_log_event::do_shall_skip");
  if (rli->slave_skip_counter > 0) {
    thd->options&= ~OPTION_BEGIN;
    DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
  }
  DBUG_RETURN(Log_event::do_shall_skip(rli));
}
5117 5118 5119
#endif /* !MYSQL_CLIENT */


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5120
/**************************************************************************
5121
  User_var_log_event methods
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5122
**************************************************************************/
5123

5124
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5125 5126 5127
void User_var_log_event::pack_info(Protocol* protocol)
{
  char *buf= 0;
5128
  uint val_offset= 4 + name_len;
5129 5130 5131 5132
  uint event_len= val_offset;

  if (is_null)
  {
5133 5134
    if (!(buf= (char*) my_malloc(val_offset + 5, MYF(MY_WME))))
      return;
5135 5136 5137 5138 5139 5140 5141 5142 5143
    strmov(buf + val_offset, "NULL");
    event_len= val_offset + 4;
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      double real_val;
      float8get(real_val, val);
5144 5145 5146
      if (!(buf= (char*) my_malloc(val_offset + FLOATING_POINT_BUFFER,
                                   MYF(MY_WME))))
        return;
5147 5148
      event_len+= my_sprintf(buf + val_offset,
			     (buf + val_offset, "%.14g", real_val));
5149 5150
      break;
    case INT_RESULT:
5151 5152
      if (!(buf= (char*) my_malloc(val_offset + 22, MYF(MY_WME))))
        return;
5153 5154
      event_len= longlong10_to_str(uint8korr(val), buf + val_offset,-10)-buf;
      break;
5155 5156
    case DECIMAL_RESULT:
    {
5157 5158 5159
      if (!(buf= (char*) my_malloc(val_offset + DECIMAL_MAX_STR_LENGTH,
                                   MYF(MY_WME))))
        return;
5160 5161
      String str(buf+val_offset, DECIMAL_MAX_STR_LENGTH, &my_charset_bin);
      my_decimal dec;
5162 5163
      binary2my_decimal(E_DEC_FATAL_ERROR, (uchar*) (val+2), &dec, val[0],
                        val[1]);
5164 5165 5166 5167
      my_decimal2string(E_DEC_FATAL_ERROR, &dec, 0, 0, 0, &str);
      event_len= str.length() + val_offset;
      break;
    } 
5168
    case STRING_RESULT:
5169
      /* 15 is for 'COLLATE' and other chars */
5170 5171
      buf= (char*) my_malloc(event_len+val_len*2+1+2*MY_CS_NAME_SIZE+15,
                             MYF(MY_WME));
5172
      CHARSET_INFO *cs;
5173 5174
      if (!buf)
        return;
5175 5176 5177 5178 5179 5180 5181
      if (!(cs= get_charset(charset_number, MYF(0))))
      {
        strmov(buf+val_offset, "???");
        event_len+= 3;
      }
      else
      {
5182 5183 5184
        char *p= strxmov(buf + val_offset, "_", cs->csname, " ", NullS);
        p= str_to_hex(p, val, val_len);
        p= strxmov(p, " COLLATE ", cs->name, NullS);
5185 5186
        event_len= p-buf;
      }
5187
      break;
5188
    case ROW_RESULT:
5189
    default:
5190 5191 5192 5193 5194
      DBUG_ASSERT(1);
      return;
    }
  }
  buf[0]= '@';
5195
  buf[1]= '`';
5196
  memcpy(buf+2, name, name_len);
5197 5198
  buf[2+name_len]= '`';
  buf[3+name_len]= '=';
5199
  protocol->store(buf, event_len, &my_charset_bin);
5200
  my_free(buf, MYF(0));
5201
}
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5202
#endif /* !MYSQL_CLIENT */
5203 5204


5205 5206 5207 5208
User_var_log_event::
User_var_log_event(const char* buf,
                   const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
5209
{
5210
  buf+= description_event->common_header_len;
5211 5212
  name_len= uint4korr(buf);
  name= (char *) buf + UV_NAME_LEN_SIZE;
5213 5214
  buf+= UV_NAME_LEN_SIZE + name_len;
  is_null= (bool) *buf;
5215 5216 5217
  if (is_null)
  {
    type= STRING_RESULT;
5218
    charset_number= my_charset_bin.number;
5219 5220 5221 5222 5223
    val_len= 0;
    val= 0;  
  }
  else
  {
5224 5225 5226
    type= (Item_result) buf[UV_VAL_IS_NULL];
    charset_number= uint4korr(buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE);
    val_len= uint4korr(buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE + 
5227
		       UV_CHARSET_NUMBER_SIZE);
5228 5229
    val= (char *) (buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE +
		   UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE);
5230 5231 5232 5233
  }
}


5234
#ifndef MYSQL_CLIENT
5235
bool User_var_log_event::write(IO_CACHE* file)
5236 5237 5238 5239
{
  char buf[UV_NAME_LEN_SIZE];
  char buf1[UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE + 
	    UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE];
5240
  uchar buf2[max(8, DECIMAL_MAX_FIELD_SIZE + 2)], *pos= buf2;
5241
  uint buf1_length;
5242
  ulong event_length;
5243

5244
  int4store(buf, name_len);
5245 5246 5247 5248
  
  if ((buf1[0]= is_null))
  {
    buf1_length= 1;
5249
    val_len= 0;                                 // Length of 'pos'
5250 5251
  }    
  else
5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262
  {
    buf1[1]= type;
    int4store(buf1 + 2, charset_number);

    switch (type) {
    case REAL_RESULT:
      float8store(buf2, *(double*) val);
      break;
    case INT_RESULT:
      int8store(buf2, *(longlong*) val);
      break;
5263 5264 5265 5266 5267 5268
    case DECIMAL_RESULT:
    {
      my_decimal *dec= (my_decimal *)val;
      dec->fix_buffer_pointer();
      buf2[0]= (char)(dec->intg + dec->frac);
      buf2[1]= (char)dec->frac;
5269
      decimal2bin((decimal_t*)val, buf2+2, buf2[0], buf2[1]);
5270 5271 5272
      val_len= decimal_bin_size(buf2[0], buf2[1]) + 2;
      break;
    }
5273
    case STRING_RESULT:
5274
      pos= (uchar*) val;
5275
      break;
5276
    case ROW_RESULT:
5277
    default:
5278 5279 5280
      DBUG_ASSERT(1);
      return 0;
    }
5281 5282
    int4store(buf1 + 2 + UV_CHARSET_NUMBER_SIZE, val_len);
    buf1_length= 10;
5283
  }
5284 5285 5286 5287 5288

  /* Length of the whole event */
  event_length= sizeof(buf)+ name_len + buf1_length + val_len;

  return (write_header(file, event_length) ||
5289 5290 5291 5292
          my_b_safe_write(file, (uchar*) buf, sizeof(buf))   ||
	  my_b_safe_write(file, (uchar*) name, name_len)     ||
	  my_b_safe_write(file, (uchar*) buf1, buf1_length) ||
	  my_b_safe_write(file, pos, val_len));
5293
}
5294
#endif
5295

5296

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5297
/*
5298
  User_var_log_event::print()
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5299
*/
5300 5301

#ifdef MYSQL_CLIENT
5302
void User_var_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
5303
{
5304 5305 5306
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

5307
  if (!print_event_info->short_form)
5308
  {
5309 5310
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tUser_var\n");
5311 5312
  }

5313
  my_b_printf(&cache, "SET @`");
5314
  my_b_write(&cache, (uchar*) name, (uint) (name_len));
5315
  my_b_printf(&cache, "`");
5316 5317 5318

  if (is_null)
  {
5319
    my_b_printf(&cache, ":=NULL%s\n", print_event_info->delimiter);
5320 5321 5322 5323 5324 5325
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      double real_val;
5326
      char real_buf[FMT_G_BUFSIZE(14)];
5327
      float8get(real_val, val);
5328 5329
      my_sprintf(real_buf, (real_buf, "%.14g", real_val));
      my_b_printf(&cache, ":=%s%s\n", real_buf, print_event_info->delimiter);
5330 5331 5332 5333
      break;
    case INT_RESULT:
      char int_buf[22];
      longlong10_to_str(uint8korr(val), int_buf, -10);
5334
      my_b_printf(&cache, ":=%s%s\n", int_buf, print_event_info->delimiter);
5335
      break;
5336 5337 5338 5339 5340 5341
    case DECIMAL_RESULT:
    {
      char str_buf[200];
      int str_len= sizeof(str_buf) - 1;
      int precision= (int)val[0];
      int scale= (int)val[1];
5342 5343
      decimal_digit_t dec_buf[10];
      decimal_t dec;
5344 5345 5346
      dec.len= 10;
      dec.buf= dec_buf;

5347
      bin2decimal((uchar*) val+2, &dec, precision, scale);
5348 5349
      decimal2string(&dec, str_buf, &str_len, 0, 0, 0);
      str_buf[str_len]= 0;
5350
      my_b_printf(&cache, ":=%s%s\n", str_buf, print_event_info->delimiter);
5351 5352
      break;
    }
5353
    case STRING_RESULT:
5354
    {
5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368
      /*
        Let's express the string in hex. That's the most robust way. If we
        print it in character form instead, we need to escape it with
        character_set_client which we don't know (we will know it in 5.0, but
        in 4.1 we don't know it easily when we are printing
        User_var_log_event). Explanation why we would need to bother with
        character_set_client (quoting Bar):
        > Note, the parser doesn't switch to another unescaping mode after
        > it has met a character set introducer.
        > For example, if an SJIS client says something like:
        > SET @a= _ucs2 \0a\0b'
        > the string constant is still unescaped according to SJIS, not
        > according to UCS2.
      */
5369 5370 5371 5372
      char *hex_str;
      CHARSET_INFO *cs;

      if (!(hex_str= (char *)my_alloca(2*val_len+1+2))) // 2 hex digits / byte
5373
        break; // no error, as we are 'void'
5374
      str_to_hex(hex_str, val, val_len);
5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385
      /*
        For proper behaviour when mysqlbinlog|mysql, we need to explicitely
        specify the variable's collation. It will however cause problems when
        people want to mysqlbinlog|mysql into another server not supporting the
        character set. But there's not much to do about this and it's unlikely.
      */
      if (!(cs= get_charset(charset_number, MYF(0))))
        /*
          Generate an unusable command (=> syntax error) is probably the best
          thing we can do here.
        */
5386
        my_b_printf(&cache, ":=???%s\n", print_event_info->delimiter);
5387
      else
5388 5389 5390
        my_b_printf(&cache, ":=_%s %s COLLATE `%s`%s\n",
                    cs->csname, hex_str, cs->name,
                    print_event_info->delimiter);
5391
      my_afree(hex_str);
5392
    }
5393
      break;
5394
    case ROW_RESULT:
5395
    default:
5396
      DBUG_ASSERT(1);
5397 5398 5399 5400
      return;
    }
  }
}
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5401
#endif
5402

5403

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5404
/*
5405
  User_var_log_event::do_apply_event()
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monty@narttu.mysql.fi committed
5406
*/
5407

5408
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5409
int User_var_log_event::do_apply_event(Relay_log_info const *rli)
5410 5411
{
  Item *it= 0;
5412 5413 5414
  CHARSET_INFO *charset;
  if (!(charset= get_charset(charset_number, MYF(MY_WME))))
    return 1;
5415 5416 5417
  LEX_STRING user_var_name;
  user_var_name.str= name;
  user_var_name.length= name_len;
5418 5419
  double real_val;
  longlong int_val;
5420

5421 5422 5423 5424
  /*
    We are now in a statement until the associated query log event has
    been processed.
   */
5425
  const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
5426

5427 5428 5429 5430 5431 5432 5433 5434 5435
  if (is_null)
  {
    it= new Item_null();
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      float8get(real_val, val);
5436
      it= new Item_float(real_val, 0);
5437
      val= (char*) &real_val;		// Pointer to value in native format
5438
      val_len= 8;
5439 5440
      break;
    case INT_RESULT:
5441 5442 5443
      int_val= (longlong) uint8korr(val);
      it= new Item_int(int_val);
      val= (char*) &int_val;		// Pointer to value in native format
5444
      val_len= 8;
5445
      break;
5446 5447
    case DECIMAL_RESULT:
    {
5448
      Item_decimal *dec= new Item_decimal((uchar*) val+2, val[0], val[1]);
5449 5450 5451 5452 5453
      it= dec;
      val= (char *)dec->val_decimal(NULL);
      val_len= sizeof(my_decimal);
      break;
    }
5454 5455 5456
    case STRING_RESULT:
      it= new Item_string(val, val_len, charset);
      break;
5457
    case ROW_RESULT:
5458
    default:
5459 5460 5461 5462 5463
      DBUG_ASSERT(1);
      return 0;
    }
  }
  Item_func_set_user_var e(user_var_name, it);
5464 5465 5466
  /*
    Item_func_set_user_var can't substitute something else on its place =>
    0 can be passed as last argument (reference on item)
5467 5468 5469 5470

    Fix_fields() can fail, in which case a call of update_hash() might
    crash the server, so if fix fields fails, we just return with an
    error.
5471
  */
5472 5473 5474
  if (e.fix_fields(thd, 0))
    return 1;

5475 5476 5477 5478 5479
  /*
    A variable can just be considered as a table with
    a single record and with a single column. Thus, like
    a column value, it could always have IMPLICIT derivation.
   */
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kaa@polly.local committed
5480
  e.update_hash(val, val_len, type, charset, DERIVATION_IMPLICIT, 0);
5481
  free_root(thd->mem_root,0);
5482

5483 5484 5485
  return 0;
}

5486
int User_var_log_event::do_update_pos(Relay_log_info *rli)
5487
{
5488
  rli->inc_event_relay_log_pos();
5489 5490
  return 0;
}
5491

5492
Log_event::enum_skip_reason
5493
User_var_log_event::do_shall_skip(Relay_log_info *rli)
5494 5495 5496 5497 5498 5499 5500 5501 5502
{
  /*
    It is a common error to set the slave skip counter to 1 instead
    of 2 when recovering from an insert which used a auto increment,
    rand, or user var.  Therefore, if the slave skip counter is 1, we
    just say that this event should be skipped by ignoring it, meaning
    that we do not change the value of the slave skip counter since it
    will be decreased by the following insert event.
  */
5503
  return continue_group(rli);
5504
}
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5505
#endif /* !MYSQL_CLIENT */
5506 5507


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5508
/**************************************************************************
5509
  Slave_log_event methods
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5510
**************************************************************************/
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5511

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5512
#ifdef HAVE_REPLICATION
5513
#ifdef MYSQL_CLIENT
5514
void Unknown_log_event::print(FILE* file_arg, PRINT_EVENT_INFO* print_event_info)
5515
{
5516 5517
  Write_on_release_cache cache(&print_event_info->head_cache, file_arg);

5518
  if (print_event_info->short_form)
5519
    return;
5520 5521
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n# %s", "Unknown event\n");
5522 5523
}
#endif  
5524

5525
#ifndef MYSQL_CLIENT
5526
void Slave_log_event::pack_info(Protocol *protocol)
5527
{
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5528
  char buf[256+HOSTNAME_LENGTH], *pos;
5529 5530 5531 5532 5533 5534 5535
  pos= strmov(buf, "host=");
  pos= strnmov(pos, master_host, HOSTNAME_LENGTH);
  pos= strmov(pos, ",port=");
  pos= int10_to_str((long) master_port, pos, 10);
  pos= strmov(pos, ",log=");
  pos= strmov(pos, master_log);
  pos= strmov(pos, ",pos=");
5536
  pos= longlong10_to_str(master_pos, pos, 10);
5537
  protocol->store(buf, pos-buf, &my_charset_bin);
5538
}
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5539
#endif /* !MYSQL_CLIENT */
5540 5541 5542


#ifndef MYSQL_CLIENT
5543 5544 5545 5546
/**
  @todo
  re-write this better without holding both locks at the same time
*/
5547
Slave_log_event::Slave_log_event(THD* thd_arg,
5548
				 Relay_log_info* rli)
5549
  :Log_event(thd_arg, 0, 0) , mem_pool(0), master_host(0)
5550 5551 5552 5553
{
  DBUG_ENTER("Slave_log_event");
  if (!rli->inited)				// QQ When can this happen ?
    DBUG_VOID_RETURN;
5554

5555
  Master_info* mi = rli->mi;
5556 5557 5558 5559
  // TODO: re-write this better without holding both locks at the same time
  pthread_mutex_lock(&mi->data_lock);
  pthread_mutex_lock(&rli->data_lock);
  master_host_len = strlen(mi->host);
5560
  master_log_len = strlen(rli->group_master_log_name);
5561 5562 5563
  // on OOM, just do not initialize the structure and print the error
  if ((mem_pool = (char*)my_malloc(get_data_size() + 1,
				   MYF(MY_WME))))
5564
  {
5565 5566 5567
    master_host = mem_pool + SL_MASTER_HOST_OFFSET ;
    memcpy(master_host, mi->host, master_host_len + 1);
    master_log = master_host + master_host_len + 1;
5568
    memcpy(master_log, rli->group_master_log_name, master_log_len + 1);
5569
    master_port = mi->port;
5570
    master_pos = rli->group_master_log_pos;
5571
    DBUG_PRINT("info", ("master_log: %s  pos: %lu", master_log,
5572
			(ulong) master_pos));
5573
  }
5574 5575 5576 5577 5578 5579
  else
    sql_print_error("Out of memory while recording slave event");
  pthread_mutex_unlock(&rli->data_lock);
  pthread_mutex_unlock(&mi->data_lock);
  DBUG_VOID_RETURN;
}
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5580
#endif /* !MYSQL_CLIENT */
5581 5582 5583 5584 5585 5586 5587 5588 5589


Slave_log_event::~Slave_log_event()
{
  my_free(mem_pool, MYF(MY_ALLOW_ZERO_PTR));
}


#ifdef MYSQL_CLIENT
5590
void Slave_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
5591
{
5592 5593
  Write_on_release_cache cache(&print_event_info->head_cache, file);

5594
  char llbuff[22];
5595
  if (print_event_info->short_form)
5596
    return;
5597 5598
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n\
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5599
Slave: master_host: '%s'  master_port: %d  master_log: '%s'  master_pos: %s\n",
5600 5601
	  master_host, master_port, master_log, llstr(master_pos, llbuff));
}
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5602
#endif /* MYSQL_CLIENT */
5603 5604 5605 5606 5607 5608 5609 5610


int Slave_log_event::get_data_size()
{
  return master_host_len + master_log_len + 1 + SL_MASTER_HOST_OFFSET;
}


5611
#ifndef MYSQL_CLIENT
5612
bool Slave_log_event::write(IO_CACHE* file)
5613
{
5614
  ulong event_length= get_data_size();
5615 5616 5617
  int8store(mem_pool + SL_MASTER_POS_OFFSET, master_pos);
  int2store(mem_pool + SL_MASTER_PORT_OFFSET, master_port);
  // log and host are already there
5618 5619

  return (write_header(file, event_length) ||
5620
          my_b_safe_write(file, (uchar*) mem_pool, event_length));
5621
}
5622
#endif
5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633


void Slave_log_event::init_from_mem_pool(int data_size)
{
  master_pos = uint8korr(mem_pool + SL_MASTER_POS_OFFSET);
  master_port = uint2korr(mem_pool + SL_MASTER_PORT_OFFSET);
  master_host = mem_pool + SL_MASTER_HOST_OFFSET;
  master_host_len = strlen(master_host);
  // safety
  master_log = master_host + master_host_len + 1;
  if (master_log > mem_pool + data_size)
5634
  {
5635 5636
    master_host = 0;
    return;
5637
  }
5638 5639
  master_log_len = strlen(master_log);
}
5640

5641

5642
/** This code is not used, so has not been updated to be format-tolerant. */
5643 5644
Slave_log_event::Slave_log_event(const char* buf, uint event_len)
  :Log_event(buf,0) /*unused event*/ ,mem_pool(0),master_host(0)
5645
{
5646
  if (event_len < LOG_EVENT_HEADER_LEN)
5647
    return;
5648
  event_len -= LOG_EVENT_HEADER_LEN;
5649 5650 5651 5652 5653
  if (!(mem_pool = (char*) my_malloc(event_len + 1, MYF(MY_WME))))
    return;
  memcpy(mem_pool, buf + LOG_EVENT_HEADER_LEN, event_len);
  mem_pool[event_len] = 0;
  init_from_mem_pool(event_len);
5654 5655
}

5656

5657
#ifndef MYSQL_CLIENT
5658
int Slave_log_event::do_apply_event(Relay_log_info const *rli)
5659 5660 5661
{
  if (mysql_bin_log.is_open())
    mysql_bin_log.write(this);
5662
  return 0;
5663
}
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5664
#endif /* !MYSQL_CLIENT */
5665 5666


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5667
/**************************************************************************
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5668
	Stop_log_event methods
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5669
**************************************************************************/
5670

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monty@narttu.mysql.fi committed
5671
/*
5672
  Stop_log_event::print()
5673
*/
5674 5675

#ifdef MYSQL_CLIENT
5676
void Stop_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
5677
{
5678 5679 5680
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

5681
  if (print_event_info->short_form)
5682 5683
    return;

5684 5685
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\tStop\n");
5686
}
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5687
#endif /* MYSQL_CLIENT */
5688

5689

5690
#ifndef MYSQL_CLIENT
5691
/*
5692 5693 5694 5695 5696 5697 5698
  The master stopped.  We used to clean up all temporary tables but
  this is useless as, as the master has shut down properly, it has
  written all DROP TEMPORARY TABLE (prepared statements' deletion is
  TODO only when we binlog prep stmts).  We used to clean up
  slave_load_tmpdir, but this is useless as it has been cleared at the
  end of LOAD DATA INFILE.  So we have nothing to do here.  The place
  were we must do this cleaning is in
5699
  Start_log_event_v3::do_apply_event(), not here. Because if we come
5700
  here, the master was sane.
5701
*/
5702
int Stop_log_event::do_update_pos(Relay_log_info *rli)
5703
{
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
5704 5705
  /*
    We do not want to update master_log pos because we get a rotate event
5706
    before stop, so by now group_master_log_name is set to the next log.
5707
    If we updated it, we will have incorrect master coordinates and this
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monty@hundin.mysql.fi committed
5708
    could give false triggers in MASTER_POS_WAIT() that we have reached
5709
    the target position when in fact we have not.
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monty@hundin.mysql.fi committed
5710
  */
5711 5712 5713 5714 5715 5716 5717
  if (thd->options & OPTION_BEGIN)
    rli->inc_event_relay_log_pos();
  else
  {
    rli->inc_group_relay_log_pos(0);
    flush_relay_log_info(rli);
  }
5718 5719
  return 0;
}
5720

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5721
#endif /* !MYSQL_CLIENT */
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5722
#endif /* HAVE_REPLICATION */
5723

5724

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5725
/**************************************************************************
monty@narttu.mysql.fi's avatar
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5726
	Create_file_log_event methods
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monty@mashka.mysql.fi committed
5727
**************************************************************************/
5728 5729

/*
5730
  Create_file_log_event ctor
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5731
*/
5732 5733

#ifndef MYSQL_CLIENT
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5734 5735 5736 5737
Create_file_log_event::
Create_file_log_event(THD* thd_arg, sql_exchange* ex,
		      const char* db_arg, const char* table_name_arg,
		      List<Item>& fields_arg, enum enum_duplicates handle_dup,
5738
                      bool ignore,
5739
		      uchar* block_arg, uint block_len_arg, bool using_trans)
5740
  :Load_log_event(thd_arg,ex,db_arg,table_name_arg,fields_arg,handle_dup, ignore,
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5741
		  using_trans),
5742
   fake_base(0), block(block_arg), event_buf(0), block_len(block_len_arg),
5743
   file_id(thd_arg->file_id = mysql_bin_log.next_file_id())
5744
{
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monty@mysql.com committed
5745
  DBUG_ENTER("Create_file_log_event");
5746
  sql_ex.force_new_format();
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monty@mysql.com committed
5747
  DBUG_VOID_RETURN;
5748
}
5749

5750

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5751
/*
5752
  Create_file_log_event::write_data_body()
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monty@narttu.mysql.fi committed
5753
*/
5754

5755
bool Create_file_log_event::write_data_body(IO_CACHE* file)
5756
{
5757 5758
  bool res;
  if ((res= Load_log_event::write_data_body(file)) || fake_base)
5759
    return res;
5760 5761
  return (my_b_safe_write(file, (uchar*) "", 1) ||
          my_b_safe_write(file, (uchar*) block, block_len));
5762 5763
}

5764

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5765
/*
5766
  Create_file_log_event::write_data_header()
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5767
*/
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5768

5769
bool Create_file_log_event::write_data_header(IO_CACHE* file)
5770
{
5771
  bool res;
5772
  uchar buf[CREATE_FILE_HEADER_LEN];
5773 5774
  if ((res= Load_log_event::write_data_header(file)) || fake_base)
    return res;
5775
  int4store(buf + CF_FILE_ID_OFFSET, file_id);
5776
  return my_b_safe_write(file, buf, CREATE_FILE_HEADER_LEN) != 0;
5777 5778 5779
}


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monty@narttu.mysql.fi committed
5780
/*
5781
  Create_file_log_event::write_base()
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monty@narttu.mysql.fi committed
5782
*/
5783

5784
bool Create_file_log_event::write_base(IO_CACHE* file)
5785
{
5786 5787 5788 5789
  bool res;
  fake_base= 1;                                 // pretend we are Load event
  res= write(file);
  fake_base= 0;
5790 5791 5792
  return res;
}

5793
#endif /* !MYSQL_CLIENT */
5794

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monty@narttu.mysql.fi committed
5795
/*
5796
  Create_file_log_event ctor
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monty@narttu.mysql.fi committed
5797
*/
5798

5799 5800 5801
Create_file_log_event::Create_file_log_event(const char* buf, uint len,
                                             const Format_description_log_event* description_event)
  :Load_log_event(buf,0,description_event),fake_base(0),block(0),inited_from_old(0)
5802
{
5803 5804 5805 5806 5807
  DBUG_ENTER("Create_file_log_event::Create_file_log_event(char*,...)");
  uint block_offset;
  uint header_len= description_event->common_header_len;
  uint8 load_header_len= description_event->post_header_len[LOAD_EVENT-1];
  uint8 create_file_header_len= description_event->post_header_len[CREATE_FILE_EVENT-1];
5808
  if (!(event_buf= (char*) my_memdup(buf, len, MYF(MY_WME))) ||
5809 5810 5811 5812 5813 5814 5815
      copy_log_event(event_buf,len,
                     ((buf[EVENT_TYPE_OFFSET] == LOAD_EVENT) ?
                      load_header_len + header_len :
                      (fake_base ? (header_len+load_header_len) :
                       (header_len+load_header_len) +
                       create_file_header_len)),
                     description_event))
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monty@mysql.com committed
5816
    DBUG_VOID_RETURN;
5817
  if (description_event->binlog_version!=1)
5818
  {
5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835
    file_id= uint4korr(buf + 
                       header_len +
		       load_header_len + CF_FILE_ID_OFFSET);
    /*
      Note that it's ok to use get_data_size() below, because it is computed
      with values we have already read from this event (because we called
      copy_log_event()); we are not using slave's format info to decode
      master's format, we are really using master's format info.
      Anyway, both formats should be identical (except the common_header_len)
      as these Load events are not changed between 4.0 and 5.0 (as logging of
      LOAD DATA INFILE does not use Load_log_event in 5.0).

      The + 1 is for \0 terminating fname  
    */
    block_offset= (description_event->common_header_len +
                   Load_log_event::get_data_size() +
                   create_file_header_len + 1);
5836
    if (len < block_offset)
5837
      DBUG_VOID_RETURN;
5838
    block = (uchar*)buf + block_offset;
5839 5840 5841 5842 5843 5844
    block_len = len - block_offset;
  }
  else
  {
    sql_ex.force_new_format();
    inited_from_old = 1;
5845
  }
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monty@mysql.com committed
5846
  DBUG_VOID_RETURN;
5847 5848
}

5849

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5850
/*
5851
  Create_file_log_event::print()
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monty@narttu.mysql.fi committed
5852
*/
5853 5854

#ifdef MYSQL_CLIENT
5855
void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info,
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5856
				  bool enable_local)
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nick@mysql.com committed
5857
{
5858 5859
  Write_on_release_cache cache(&print_event_info->head_cache, file);

5860
  if (print_event_info->short_form)
5861 5862
  {
    if (enable_local && check_fname_outside_temp_buf())
5863
      Load_log_event::print(file, print_event_info);
5864
    return;
5865 5866 5867 5868
  }

  if (enable_local)
  {
5869
    Load_log_event::print(file, print_event_info,
5870
			  !check_fname_outside_temp_buf());
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5871 5872 5873 5874
    /* 
       That one is for "file_id: etc" below: in mysqlbinlog we want the #, in
       SHOW BINLOG EVENTS we don't.
    */
5875
    my_b_printf(&cache, "#"); 
5876 5877
  }

5878
  my_b_printf(&cache, " file_id: %d  block_len: %d\n", file_id, block_len);
nick@mysql.com's avatar
nick@mysql.com committed
5879
}
5880

monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5881

5882
void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
5883
{
5884
  print(file, print_event_info, 0);
5885
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5886
#endif /* MYSQL_CLIENT */
nick@mysql.com's avatar
nick@mysql.com committed
5887

5888

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5889
/*
5890
  Create_file_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5891
*/
5892

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5893
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5894
void Create_file_log_event::pack_info(Protocol *protocol)
5895
{
5896 5897 5898
  char buf[NAME_LEN*2 + 30 + 21*2], *pos;
  pos= strmov(buf, "db=");
  memcpy(pos, db, db_len);
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5899
  pos= strmov(pos + db_len, ";table=");
5900
  memcpy(pos, table_name, table_name_len);
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5901
  pos= strmov(pos + table_name_len, ";file_id=");
5902 5903 5904
  pos= int10_to_str((long) file_id, pos, 10);
  pos= strmov(pos, ";block_len=");
  pos= int10_to_str((long) block_len, pos, 10);
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5905
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
5906
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5907
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
5908 5909


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5910
/*
5911
  Create_file_log_event::do_apply_event()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5912
*/
5913

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5914
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5915
int Create_file_log_event::do_apply_event(Relay_log_info const *rli)
5916
{
5917 5918
  char proc_info[17+FN_REFLEN+10], *fname_buf;
  char *ext;
5919 5920 5921
  int fd = -1;
  IO_CACHE file;
  int error = 1;
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
5922

5923
  bzero((char*)&file, sizeof(file));
5924 5925
  fname_buf= strmov(proc_info, "Making temp file ");
  ext= slave_load_file_stem(fname_buf, file_id, server_id, ".info");
5926
  thd_proc_info(thd, proc_info);
5927 5928 5929 5930
  my_delete(fname_buf, MYF(0)); // old copy may exist already
  if ((fd= my_create(fname_buf, CREATE_MODE,
		     O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
		     MYF(MY_WME))) < 0 ||
5931 5932 5933
      init_io_cache(&file, fd, IO_SIZE, WRITE_CACHE, (my_off_t)0, 0,
		    MYF(MY_WME|MY_NABP)))
  {
5934 5935 5936
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: could not open file '%s'",
                fname_buf);
5937 5938 5939 5940
    goto err;
  }
  
  // a trick to avoid allocating another buffer
5941 5942
  fname= fname_buf;
  fname_len= (uint) (strmov(ext, ".data") - fname);
5943 5944
  if (write_base(&file))
  {
5945
    strmov(ext, ".info"); // to have it right in the error message
5946 5947 5948
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: could not write to file '%s'",
                fname_buf);
5949 5950 5951 5952 5953 5954
    goto err;
  }
  end_io_cache(&file);
  my_close(fd, MYF(0));
  
  // fname_buf now already has .data, not .info, because we did our trick
5955 5956 5957 5958
  my_delete(fname_buf, MYF(0)); // old copy may exist already
  if ((fd= my_create(fname_buf, CREATE_MODE,
		     O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
		     MYF(MY_WME))) < 0)
5959
  {
5960 5961 5962
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: could not open file '%s'",
                fname_buf);
5963 5964
    goto err;
  }
5965
  if (my_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP)))
5966
  {
5967 5968 5969
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: write to '%s' failed",
                fname_buf);
5970 5971
    goto err;
  }
5972 5973
  error=0;					// Everything is ok

5974 5975 5976 5977 5978
err:
  if (error)
    end_io_cache(&file);
  if (fd >= 0)
    my_close(fd, MYF(0));
5979
  thd_proc_info(thd, 0);
5980
  return error == 0;
5981
}
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monty@narttu.mysql.fi committed
5982
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
5983

5984

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monty@mashka.mysql.fi committed
5985
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5986
	Append_block_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5987
**************************************************************************/
5988

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5989
/*
5990
  Append_block_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5991
*/
5992 5993

#ifndef MYSQL_CLIENT  
5994 5995
Append_block_log_event::Append_block_log_event(THD *thd_arg,
                                               const char *db_arg,
5996
					       uchar *block_arg,
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5997 5998 5999
					       uint block_len_arg,
					       bool using_trans)
  :Log_event(thd_arg,0, using_trans), block(block_arg),
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6000
   block_len(block_len_arg), file_id(thd_arg->file_id), db(db_arg)
6001 6002
{
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6003
#endif
6004 6005


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6006
/*
6007
  Append_block_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6008
*/
6009

6010 6011 6012
Append_block_log_event::Append_block_log_event(const char* buf, uint len,
                                               const Format_description_log_event* description_event)
  :Log_event(buf, description_event),block(0)
6013
{
6014 6015 6016 6017 6018 6019
  DBUG_ENTER("Append_block_log_event::Append_block_log_event(char*,...)");
  uint8 common_header_len= description_event->common_header_len; 
  uint8 append_block_header_len=
    description_event->post_header_len[APPEND_BLOCK_EVENT-1];
  uint total_header_len= common_header_len+append_block_header_len;
  if (len < total_header_len)
monty@mysql.com's avatar
monty@mysql.com committed
6020
    DBUG_VOID_RETURN;
6021
  file_id= uint4korr(buf + common_header_len + AB_FILE_ID_OFFSET);
6022
  block= (uchar*)buf + total_header_len;
6023
  block_len= len - total_header_len;
monty@mysql.com's avatar
monty@mysql.com committed
6024
  DBUG_VOID_RETURN;
6025 6026 6027
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6028
/*
6029
  Append_block_log_event::write()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6030
*/
6031

6032
#ifndef MYSQL_CLIENT
6033
bool Append_block_log_event::write(IO_CACHE* file)
6034
{
6035
  uchar buf[APPEND_BLOCK_HEADER_LEN];
6036
  int4store(buf + AB_FILE_ID_OFFSET, file_id);
6037 6038
  return (write_header(file, APPEND_BLOCK_HEADER_LEN + block_len) ||
          my_b_safe_write(file, buf, APPEND_BLOCK_HEADER_LEN) ||
6039
	  my_b_safe_write(file, (uchar*) block, block_len));
6040
}
6041
#endif
6042 6043


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6044
/*
6045
  Append_block_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6046
*/
6047 6048

#ifdef MYSQL_CLIENT  
lars@mysql.com's avatar
lars@mysql.com committed
6049
void Append_block_log_event::print(FILE* file,
6050
				   PRINT_EVENT_INFO* print_event_info)
6051
{
6052 6053
  Write_on_release_cache cache(&print_event_info->head_cache, file);

6054
  if (print_event_info->short_form)
6055
    return;
6056 6057 6058
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n#%s: file_id: %d  block_len: %d\n",
              get_type_str(), file_id, block_len);
6059
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6060
#endif /* MYSQL_CLIENT */
6061 6062


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6063
/*
6064
  Append_block_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6065
*/
6066

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
6067
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
6068
void Append_block_log_event::pack_info(Protocol *protocol)
6069 6070 6071 6072 6073 6074
{
  char buf[256];
  uint length;
  length= (uint) my_sprintf(buf,
			    (buf, ";file_id=%u;block_len=%u", file_id,
			     block_len));
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6075
  protocol->store(buf, length, &my_charset_bin);
6076 6077 6078
}


6079
/*
6080
  Append_block_log_event::get_create_or_append()
6081 6082
*/

6083
int Append_block_log_event::get_create_or_append() const
6084
{
6085
  return 0; /* append to the file, fail if not exists */
6086 6087
}

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6088
/*
6089
  Append_block_log_event::do_apply_event()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6090
*/
6091

6092
int Append_block_log_event::do_apply_event(Relay_log_info const *rli)
6093
{
6094
  char proc_info[17+FN_REFLEN+10], *fname= proc_info+17;
6095
  int fd;
6096
  int error = 1;
6097
  DBUG_ENTER("Append_block_log_event::do_apply_event");
6098

6099 6100
  fname= strmov(proc_info, "Making temp file ");
  slave_load_file_stem(fname, file_id, server_id, ".data");
6101
  thd_proc_info(thd, proc_info);
6102 6103 6104 6105 6106 6107 6108
  if (get_create_or_append())
  {
    my_delete(fname, MYF(0)); // old copy may exist already
    if ((fd= my_create(fname, CREATE_MODE,
		       O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
		       MYF(MY_WME))) < 0)
    {
6109 6110 6111
      rli->report(ERROR_LEVEL, my_errno,
                  "Error in %s event: could not create file '%s'",
                  get_type_str(), fname);
6112 6113 6114
      goto err;
    }
  }
6115 6116
  else if ((fd = my_open(fname, O_WRONLY | O_APPEND | O_BINARY | O_NOFOLLOW,
                         MYF(MY_WME))) < 0)
6117
  {
6118 6119 6120
    rli->report(ERROR_LEVEL, my_errno,
                "Error in %s event: could not open file '%s'",
                get_type_str(), fname);
6121 6122
    goto err;
  }
6123
  if (my_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP)))
6124
  {
6125 6126 6127
    rli->report(ERROR_LEVEL, my_errno,
                "Error in %s event: write to '%s' failed",
                get_type_str(), fname);
6128 6129 6130
    goto err;
  }
  error=0;
6131

6132 6133 6134
err:
  if (fd >= 0)
    my_close(fd, MYF(0));
6135
  thd_proc_info(thd, 0);
6136
  DBUG_RETURN(error);
6137
}
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
6138
#endif
6139 6140


monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6141
/**************************************************************************
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monty@narttu.mysql.fi committed
6142
	Delete_file_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6143
**************************************************************************/
6144

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6145
/*
6146
  Delete_file_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6147
*/
6148 6149

#ifndef MYSQL_CLIENT
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monty@narttu.mysql.fi committed
6150 6151 6152
Delete_file_log_event::Delete_file_log_event(THD *thd_arg, const char* db_arg,
					     bool using_trans)
  :Log_event(thd_arg, 0, using_trans), file_id(thd_arg->file_id), db(db_arg)
6153 6154
{
}
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monty@narttu.mysql.fi committed
6155
#endif
6156

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6157
/*
6158
  Delete_file_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6159
*/
6160

6161 6162 6163
Delete_file_log_event::Delete_file_log_event(const char* buf, uint len,
                                             const Format_description_log_event* description_event)
  :Log_event(buf, description_event),file_id(0)
6164
{
6165 6166 6167
  uint8 common_header_len= description_event->common_header_len;
  uint8 delete_file_header_len= description_event->post_header_len[DELETE_FILE_EVENT-1];
  if (len < (uint)(common_header_len + delete_file_header_len))
6168
    return;
6169
  file_id= uint4korr(buf + common_header_len + DF_FILE_ID_OFFSET);
6170 6171 6172
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6173
/*
6174
  Delete_file_log_event::write()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6175
*/
6176

6177
#ifndef MYSQL_CLIENT
6178
bool Delete_file_log_event::write(IO_CACHE* file)
6179
{
6180
 uchar buf[DELETE_FILE_HEADER_LEN];
6181
 int4store(buf + DF_FILE_ID_OFFSET, file_id);
6182 6183
 return (write_header(file, sizeof(buf)) ||
         my_b_safe_write(file, buf, sizeof(buf)));
6184
}
6185
#endif
6186 6187


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6188
/*
6189
  Delete_file_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6190
*/
6191 6192

#ifdef MYSQL_CLIENT  
lars@mysql.com's avatar
lars@mysql.com committed
6193
void Delete_file_log_event::print(FILE* file,
6194
				  PRINT_EVENT_INFO* print_event_info)
6195
{
6196 6197
  Write_on_release_cache cache(&print_event_info->head_cache, file);

6198
  if (print_event_info->short_form)
6199
    return;
6200 6201
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n#Delete_file: file_id=%u\n", file_id);
6202
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6203
#endif /* MYSQL_CLIENT */
6204

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6205
/*
6206
  Delete_file_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6207
*/
6208

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
6209
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
6210
void Delete_file_log_event::pack_info(Protocol *protocol)
6211 6212 6213 6214
{
  char buf[64];
  uint length;
  length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id));
6215
  protocol->store(buf, (int32) length, &my_charset_bin);
6216
}
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
6217
#endif
6218

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6219
/*
6220
  Delete_file_log_event::do_apply_event()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6221
*/
6222

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
6223
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
6224
int Delete_file_log_event::do_apply_event(Relay_log_info const *rli)
6225 6226
{
  char fname[FN_REFLEN+10];
6227
  char *ext= slave_load_file_stem(fname, file_id, server_id, ".data");
6228
  (void) my_delete(fname, MYF(MY_WME));
6229
  strmov(ext, ".info");
6230
  (void) my_delete(fname, MYF(MY_WME));
6231
  return 0;
6232
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6233
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
6234 6235


monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6236
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6237
	Execute_load_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6238
**************************************************************************/
6239

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6240
/*
6241
  Execute_load_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6242
*/
6243 6244

#ifndef MYSQL_CLIENT  
6245 6246
Execute_load_log_event::Execute_load_log_event(THD *thd_arg,
                                               const char* db_arg,
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6247 6248
					       bool using_trans)
  :Log_event(thd_arg, 0, using_trans), file_id(thd_arg->file_id), db(db_arg)
6249 6250
{
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6251
#endif
6252 6253
  

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6254
/*
6255
  Execute_load_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6256
*/
6257

6258 6259 6260
Execute_load_log_event::Execute_load_log_event(const char* buf, uint len,
                                               const Format_description_log_event* description_event)
  :Log_event(buf, description_event), file_id(0)
6261
{
6262 6263 6264
  uint8 common_header_len= description_event->common_header_len;
  uint8 exec_load_header_len= description_event->post_header_len[EXEC_LOAD_EVENT-1];
  if (len < (uint)(common_header_len+exec_load_header_len))
6265
    return;
6266
  file_id= uint4korr(buf + common_header_len + EL_FILE_ID_OFFSET);
6267 6268 6269
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6270
/*
6271
  Execute_load_log_event::write()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6272
*/
6273

6274
#ifndef MYSQL_CLIENT
6275
bool Execute_load_log_event::write(IO_CACHE* file)
6276
{
6277
  uchar buf[EXEC_LOAD_HEADER_LEN];
6278
  int4store(buf + EL_FILE_ID_OFFSET, file_id);
6279 6280
  return (write_header(file, sizeof(buf)) || 
          my_b_safe_write(file, buf, sizeof(buf)));
6281
}
6282
#endif
6283 6284


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6285
/*
6286
  Execute_load_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6287
*/
6288 6289

#ifdef MYSQL_CLIENT  
lars@mysql.com's avatar
lars@mysql.com committed
6290
void Execute_load_log_event::print(FILE* file,
6291
				   PRINT_EVENT_INFO* print_event_info)
6292
{
6293 6294
  Write_on_release_cache cache(&print_event_info->head_cache, file);

6295
  if (print_event_info->short_form)
6296
    return;
6297 6298 6299
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n#Exec_load: file_id=%d\n",
              file_id);
6300
}
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6301
#endif
6302

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monty@narttu.mysql.fi committed
6303
/*
6304
  Execute_load_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6305
*/
6306

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SCRUM  
hf@deer.mysql.r18.ru committed
6307
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
6308
void Execute_load_log_event::pack_info(Protocol *protocol)
6309 6310 6311 6312
{
  char buf[64];
  uint length;
  length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id));
6313
  protocol->store(buf, (int32) length, &my_charset_bin);
6314 6315 6316
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6317
/*
6318
  Execute_load_log_event::do_apply_event()
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monty@narttu.mysql.fi committed
6319
*/
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SCRUM  
hf@deer.mysql.r18.ru committed
6320

6321
int Execute_load_log_event::do_apply_event(Relay_log_info const *rli)
6322 6323
{
  char fname[FN_REFLEN+10];
6324
  char *ext;
6325
  int fd;
6326
  int error= 1;
6327
  IO_CACHE file;
6328
  Load_log_event *lev= 0;
6329

6330
  ext= slave_load_file_stem(fname, file_id, server_id, ".info");
6331 6332
  if ((fd = my_open(fname, O_RDONLY | O_BINARY | O_NOFOLLOW,
                    MYF(MY_WME))) < 0 ||
6333 6334 6335
      init_io_cache(&file, fd, IO_SIZE, READ_CACHE, (my_off_t)0, 0,
		    MYF(MY_WME|MY_NABP)))
  {
6336 6337 6338
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Exec_load event: could not open file '%s'",
                fname);
6339 6340
    goto err;
  }
6341
  if (!(lev = (Load_log_event*)Log_event::read_log_event(&file,
6342 6343
                                                         (pthread_mutex_t*)0,
                                                         rli->relay_log.description_event_for_exec)) ||
6344
      lev->get_type_code() != NEW_LOAD_EVENT)
6345
  {
6346
    rli->report(ERROR_LEVEL, 0, "Error in Exec_load event: "
6347
                    "file '%s' appears corrupted", fname);
6348 6349
    goto err;
  }
6350

6351
  lev->thd = thd;
6352
  /*
6353
    lev->do_apply_event should use rli only for errors i.e. should
6354 6355
    not advance rli's position.

6356
    lev->do_apply_event is the place where the table is loaded (it
6357
    calls mysql_load()).
6358
  */
guilhem@mysql.com's avatar
guilhem@mysql.com committed
6359

6360
  const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos;
6361
  if (lev->do_apply_event(0,rli,1)) 
6362
  {
6363 6364 6365 6366 6367 6368 6369 6370
    /*
      We want to indicate the name of the file that could not be loaded
      (SQL_LOADxxx).
      But as we are here we are sure the error is in rli->last_slave_error and
      rli->last_slave_errno (example of error: duplicate entry for key), so we
      don't want to overwrite it with the filename.
      What we want instead is add the filename to the current error message.
    */
6371
    char *tmp= my_strdup(rli->last_error().message, MYF(MY_WME));
6372 6373
    if (tmp)
    {
6374
      rli->report(ERROR_LEVEL, rli->last_error().number,
6375
                  "%s. Failed executing load from '%s'", tmp, fname);
6376 6377
      my_free(tmp,MYF(0));
    }
6378 6379
    goto err;
  }
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guilhem@mysql.com committed
6380 6381 6382 6383 6384 6385 6386 6387 6388 6389
  /*
    We have an open file descriptor to the .info file; we need to close it
    or Windows will refuse to delete the file in my_delete().
  */
  if (fd >= 0)
  {
    my_close(fd, MYF(0));
    end_io_cache(&file);
    fd= -1;
  }
6390
  (void) my_delete(fname, MYF(MY_WME));
6391
  memcpy(ext, ".data", 6);
6392
  (void) my_delete(fname, MYF(MY_WME));
6393
  error = 0;
6394

6395 6396 6397
err:
  delete lev;
  if (fd >= 0)
6398
  {
6399
    my_close(fd, MYF(0));
6400 6401
    end_io_cache(&file);
  }
6402
  return error;
6403
}
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SCRUM  
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6404

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monty@narttu.mysql.fi committed
6405
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
6406 6407


6408 6409 6410 6411 6412 6413
/**************************************************************************
	Begin_load_query_log_event methods
**************************************************************************/

#ifndef MYSQL_CLIENT
Begin_load_query_log_event::
6414
Begin_load_query_log_event(THD* thd_arg, const char* db_arg, uchar* block_arg,
6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432
                           uint block_len_arg, bool using_trans)
  :Append_block_log_event(thd_arg, db_arg, block_arg, block_len_arg,
                          using_trans)
{
   file_id= thd_arg->file_id= mysql_bin_log.next_file_id();
}
#endif


Begin_load_query_log_event::
Begin_load_query_log_event(const char* buf, uint len,
                           const Format_description_log_event* desc_event)
  :Append_block_log_event(buf, len, desc_event)
{
}


#if defined( HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
6433
int Begin_load_query_log_event::get_create_or_append() const
6434
{
6435
  return 1; /* create the file */
6436 6437 6438 6439
}
#endif /* defined( HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */


6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
Log_event::enum_skip_reason
Begin_load_query_log_event::do_shall_skip(Relay_log_info *rli)
{
  /*
    If the slave skip counter is 1, then we should not start executing
    on the next event.
  */
  return continue_group(rli);
}
#endif


6453 6454 6455 6456 6457 6458 6459
/**************************************************************************
	Execute_load_query_log_event methods
**************************************************************************/


#ifndef MYSQL_CLIENT
Execute_load_query_log_event::
6460
Execute_load_query_log_event(THD *thd_arg, const char* query_arg,
6461 6462 6463 6464 6465
                             ulong query_length_arg, uint fn_pos_start_arg,
                             uint fn_pos_end_arg,
                             enum_load_dup_handling dup_handling_arg,
                             bool using_trans, bool suppress_use,
                             THD::killed_state killed_err_arg):
6466
  Query_log_event(thd_arg, query_arg, query_length_arg, using_trans,
6467
                  suppress_use, killed_err_arg),
6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503
  file_id(thd_arg->file_id), fn_pos_start(fn_pos_start_arg),
  fn_pos_end(fn_pos_end_arg), dup_handling(dup_handling_arg)
{
}
#endif /* !MYSQL_CLIENT */


Execute_load_query_log_event::
Execute_load_query_log_event(const char* buf, uint event_len,
                             const Format_description_log_event* desc_event):
  Query_log_event(buf, event_len, desc_event, EXECUTE_LOAD_QUERY_EVENT),
  file_id(0), fn_pos_start(0), fn_pos_end(0)
{
  if (!Query_log_event::is_valid())
    return;

  buf+= desc_event->common_header_len;

  fn_pos_start= uint4korr(buf + ELQ_FN_POS_START_OFFSET);
  fn_pos_end= uint4korr(buf + ELQ_FN_POS_END_OFFSET);
  dup_handling= (enum_load_dup_handling)(*(buf + ELQ_DUP_HANDLING_OFFSET));

  if (fn_pos_start > q_len || fn_pos_end > q_len ||
      dup_handling > LOAD_DUP_REPLACE)
    return;

  file_id= uint4korr(buf + ELQ_FILE_ID_OFFSET);
}


ulong Execute_load_query_log_event::get_post_header_size_for_derived()
{
  return EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN;
}


6504
#ifndef MYSQL_CLIENT
6505 6506 6507
bool
Execute_load_query_log_event::write_post_header_for_derived(IO_CACHE* file)
{
6508
  uchar buf[EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN];
6509 6510 6511
  int4store(buf, file_id);
  int4store(buf + 4, fn_pos_start);
  int4store(buf + 4 + 4, fn_pos_end);
6512 6513
  *(buf + 4 + 4 + 4)= (uchar) dup_handling;
  return my_b_safe_write(file, buf, EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN);
6514
}
6515
#endif
6516 6517 6518


#ifdef MYSQL_CLIENT
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lars@mysql.com committed
6519
void Execute_load_query_log_event::print(FILE* file,
6520
                                         PRINT_EVENT_INFO* print_event_info)
6521
{
6522
  print(file, print_event_info, 0);
6523 6524
}

6525 6526 6527
/**
  Prints the query as LOAD DATA LOCAL and with rewritten filename.
*/
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lars@mysql.com committed
6528
void Execute_load_query_log_event::print(FILE* file,
6529
                                         PRINT_EVENT_INFO* print_event_info,
6530 6531
                                         const char *local_fname)
{
6532 6533 6534
  Write_on_release_cache cache(&print_event_info->head_cache, file);

  print_query_header(&cache, print_event_info);
6535 6536 6537

  if (local_fname)
  {
6538
    my_b_write(&cache, (uchar*) query, fn_pos_start);
6539 6540 6541
    my_b_printf(&cache, " LOCAL INFILE \'");
    my_b_printf(&cache, local_fname);
    my_b_printf(&cache, "\'");
6542
    if (dup_handling == LOAD_DUP_REPLACE)
6543 6544
      my_b_printf(&cache, " REPLACE");
    my_b_printf(&cache, " INTO");
6545
    my_b_write(&cache, (uchar*) query + fn_pos_end, q_len-fn_pos_end);
6546
    my_b_printf(&cache, "\n%s\n", print_event_info->delimiter);
6547 6548 6549
  }
  else
  {
6550
    my_b_write(&cache, (uchar*) query, q_len);
6551
    my_b_printf(&cache, "\n%s\n", print_event_info->delimiter);
6552 6553
  }

6554
  if (!print_event_info->short_form)
6555
    my_b_printf(&cache, "# file_id: %d \n", file_id);
6556 6557 6558 6559 6560 6561 6562 6563
}
#endif


#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
void Execute_load_query_log_event::pack_info(Protocol *protocol)
{
  char *buf, *pos;
6564
  if (!(buf= (char*) my_malloc(9 + db_len + q_len + 10 + 21, MYF(MY_WME))))
6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585
    return;
  pos= buf;
  if (db && db_len)
  {
    pos= strmov(buf, "use `");
    memcpy(pos, db, db_len);
    pos= strmov(pos+db_len, "`; ");
  }
  if (query && q_len)
  {
    memcpy(pos, query, q_len);
    pos+= q_len;
  }
  pos= strmov(pos, " ;file_id=");
  pos= int10_to_str((long) file_id, pos, 10);
  protocol->store(buf, pos-buf, &my_charset_bin);
  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
}


int
6586
Execute_load_query_log_event::do_apply_event(Relay_log_info const *rli)
6587 6588 6589 6590 6591 6592 6593
{
  char *p;
  char *buf;
  char *fname;
  char *fname_end;
  int error;

6594 6595
  buf= (char*) my_malloc(q_len + 1 - (fn_pos_end - fn_pos_start) +
                         (FN_REFLEN + 10) + 10 + 8 + 5, MYF(MY_WME));
6596

6597
  DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error", my_free(buf, MYF(0)); buf= NULL;);
6598

6599
  /* Replace filename and LOCAL keyword in query before executing it */
6600
  if (buf == NULL)
6601
  {
6602 6603
    rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
                ER(ER_SLAVE_FATAL_ERROR), "Not enough memory");
6604 6605 6606 6607 6608 6609
    return 1;
  }

  p= buf;
  memcpy(p, query, fn_pos_start);
  p+= fn_pos_start;
6610
  fname= (p= strmake(p, STRING_WITH_LEN(" INFILE \'")));
6611 6612
  p= slave_load_file_stem(p, file_id, server_id, ".data");
  fname_end= p= strend(p);                      // Safer than p=p+5
6613
  *(p++)='\'';
6614
  switch (dup_handling) {
6615
  case LOAD_DUP_IGNORE:
6616
    p= strmake(p, STRING_WITH_LEN(" IGNORE"));
6617 6618
    break;
  case LOAD_DUP_REPLACE:
6619
    p= strmake(p, STRING_WITH_LEN(" REPLACE"));
6620 6621 6622 6623 6624
    break;
  default:
    /* Ordinary load data */
    break;
  }
6625
  p= strmake(p, STRING_WITH_LEN(" INTO"));
6626 6627
  p= strmake(p, query+fn_pos_end, q_len-fn_pos_end);

6628
  error= Query_log_event::do_apply_event(rli, buf, p-buf);
6629 6630 6631 6632

  /* Forging file name for deletion in same buffer */
  *fname_end= 0;

6633 6634 6635 6636 6637 6638
  /*
    If there was an error the slave is going to stop, leave the
    file so that we can re-execute this event at START SLAVE.
  */
  if (!error)
    (void) my_delete(fname, MYF(MY_WME));
6639 6640 6641 6642 6643 6644 6645

  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
  return error;
}
#endif


monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6646
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6647
	sql_ex_info methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
6648
**************************************************************************/
6649

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6650
/*
6651
  sql_ex_info::write_data()
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monty@narttu.mysql.fi committed
6652
*/
6653

6654
bool sql_ex_info::write_data(IO_CACHE* file)
6655 6656 6657
{
  if (new_format())
  {
6658 6659 6660 6661 6662
    return (write_str(file, field_term, (uint) field_term_len) ||
	    write_str(file, enclosed,   (uint) enclosed_len) ||
	    write_str(file, line_term,  (uint) line_term_len) ||
	    write_str(file, line_start, (uint) line_start_len) ||
	    write_str(file, escaped,    (uint) escaped_len) ||
6663
	    my_b_safe_write(file,(uchar*) &opt_flags,1));
6664 6665 6666
  }
  else
  {
6667 6668 6669 6670
    /**
      @todo This is sensitive to field padding. We should write a
      char[7], not an old_sql_ex. /sven
    */
6671 6672 6673 6674 6675 6676 6677 6678
    old_sql_ex old_ex;
    old_ex.field_term= *field_term;
    old_ex.enclosed=   *enclosed;
    old_ex.line_term=  *line_term;
    old_ex.line_start= *line_start;
    old_ex.escaped=    *escaped;
    old_ex.opt_flags=  opt_flags;
    old_ex.empty_flags=empty_flags;
6679
    return my_b_safe_write(file, (uchar*) &old_ex, sizeof(old_ex)) != 0;
6680 6681 6682 6683
  }
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6684
/*
6685
  sql_ex_info::init()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
6686
*/
6687

6688 6689
const char *sql_ex_info::init(const char *buf, const char *buf_end,
                              bool use_new_format)
6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701
{
  cached_new_format = use_new_format;
  if (use_new_format)
  {
    empty_flags=0;
    /*
      The code below assumes that buf will not disappear from
      under our feet during the lifetime of the event. This assumption
      holds true in the slave thread if the log is in new format, but is not
      the case when we have old format because we will be reusing net buffer
      to read the actual file before we write out the Create_file event.
    */
6702 6703 6704 6705 6706
    if (read_str(&buf, buf_end, &field_term, &field_term_len) ||
        read_str(&buf, buf_end, &enclosed,   &enclosed_len) ||
        read_str(&buf, buf_end, &line_term,  &line_term_len) ||
        read_str(&buf, buf_end, &line_start, &line_start_len) ||
        read_str(&buf, buf_end, &escaped,    &escaped_len))
6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732
      return 0;
    opt_flags = *buf++;
  }
  else
  {
    field_term_len= enclosed_len= line_term_len= line_start_len= escaped_len=1;
    field_term = buf++;			// Use first byte in string
    enclosed=	 buf++;
    line_term=   buf++;
    line_start=  buf++;
    escaped=     buf++;
    opt_flags =  *buf++;
    empty_flags= *buf++;
    if (empty_flags & FIELD_TERM_EMPTY)
      field_term_len=0;
    if (empty_flags & ENCLOSED_EMPTY)
      enclosed_len=0;
    if (empty_flags & LINE_TERM_EMPTY)
      line_term_len=0;
    if (empty_flags & LINE_START_EMPTY)
      line_start_len=0;
    if (empty_flags & ESCAPED_EMPTY)
      escaped_len=0;
  }
  return buf;
}
6733 6734 6735 6736 6737 6738 6739 6740 6741 6742


/**************************************************************************
	Rows_log_event member functions
**************************************************************************/

#ifndef MYSQL_CLIENT
Rows_log_event::Rows_log_event(THD *thd_arg, TABLE *tbl_arg, ulong tid,
                               MY_BITMAP const *cols, bool is_transactional)
  : Log_event(thd_arg, 0, is_transactional),
6743
    m_row_count(0),
6744 6745
    m_table(tbl_arg),
    m_table_id(tid),
6746
    m_width(tbl_arg ? tbl_arg->s->fields : 1),
6747 6748
    m_rows_buf(0), m_rows_cur(0), m_rows_end(0), m_flags(0) 
#ifdef HAVE_REPLICATION
6749
    , m_curr_row(NULL), m_curr_row_end(NULL), m_key(NULL)
6750
#endif
6751
{
6752 6753
  /*
    We allow a special form of dummy event when the table, and cols
6754
    are null and the table id is ~0UL.  This is a temporary
6755
    solution, to be able to terminate a started statement in the
6756
    binary log: the extraneous events will be removed in the future.
6757
   */
6758 6759
  DBUG_ASSERT(tbl_arg && tbl_arg->s && tid != ~0UL ||
              !tbl_arg && !cols && tid == ~0UL);
6760 6761 6762 6763 6764

  if (thd_arg->options & OPTION_NO_FOREIGN_KEY_CHECKS)
      set_flags(NO_FOREIGN_KEY_CHECKS_F);
  if (thd_arg->options & OPTION_RELAXED_UNIQUE_CHECKS)
      set_flags(RELAXED_UNIQUE_CHECKS_F);
6765
  /* if bitmap_init fails, caught in is_valid() */
6766 6767
  if (likely(!bitmap_init(&m_cols,
                          m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL,
6768
                          m_width,
6769
                          false)))
6770 6771 6772
  {
    /* Cols can be zero if this is a dummy binrows event */
    if (likely(cols != NULL))
6773
    {
6774
      memcpy(m_cols.bitmap, cols->bitmap, no_bytes_in_map(cols));
6775 6776
      create_last_word_mask(&m_cols);
    }
6777
  }
6778
  else
6779 6780 6781 6782
  {
    // Needed because bitmap_init() does not set it to null on failure
    m_cols.bitmap= 0;
  }
6783 6784 6785 6786 6787 6788 6789 6790
}
#endif

Rows_log_event::Rows_log_event(const char *buf, uint event_len,
                               Log_event_type event_type,
                               const Format_description_log_event
                               *description_event)
  : Log_event(buf, description_event),
6791
    m_row_count(0),
6792
#ifndef MYSQL_CLIENT
6793
    m_table(NULL),
6794 6795 6796
#endif
    m_table_id(0), m_rows_buf(0), m_rows_cur(0), m_rows_end(0)
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
6797
    , m_curr_row(NULL), m_curr_row_end(NULL), m_key(NULL)
6798
#endif
6799 6800 6801 6802 6803
{
  DBUG_ENTER("Rows_log_event::Rows_log_event(const char*,...)");
  uint8 const common_header_len= description_event->common_header_len;
  uint8 const post_header_len= description_event->post_header_len[event_type-1];

6804 6805
  DBUG_PRINT("enter",("event_len: %u  common_header_len: %d  "
		      "post_header_len: %d",
6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818
		      event_len, common_header_len,
		      post_header_len));

  const char *post_start= buf + common_header_len;
  post_start+= RW_MAPID_OFFSET;
  if (post_header_len == 6)
  {
    /* Master is of an intermediate source tree before 5.1.4. Id is 4 bytes */
    m_table_id= uint4korr(post_start);
    post_start+= 4;
  }
  else
  {
6819
    m_table_id= (ulong) uint6korr(post_start);
6820 6821 6822 6823 6824
    post_start+= RW_FLAGS_OFFSET;
  }

  m_flags= uint2korr(post_start);

6825 6826 6827
  uchar const *const var_start=
    (const uchar *)buf + common_header_len + post_header_len;
  uchar const *const ptr_width= var_start;
6828
  uchar *ptr_after_width= (uchar*) ptr_width;
6829
  DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));
6830
  m_width = net_field_length(&ptr_after_width);
6831 6832 6833 6834
  DBUG_PRINT("debug", ("m_width=%lu", m_width));
  /* if bitmap_init fails, catched in is_valid() */
  if (likely(!bitmap_init(&m_cols,
                          m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL,
6835
                          m_width,
6836 6837 6838 6839
                          false)))
  {
    DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));
    memcpy(m_cols.bitmap, ptr_after_width, (m_width + 7) / 8);
6840
    create_last_word_mask(&m_cols);
6841
    ptr_after_width+= (m_width + 7) / 8;
6842
    DBUG_DUMP("m_cols", (uchar*) m_cols.bitmap, no_bytes_in_map(&m_cols));
6843 6844 6845 6846 6847 6848 6849
  }
  else
  {
    // Needed because bitmap_init() does not set it to null on failure
    m_cols.bitmap= NULL;
    DBUG_VOID_RETURN;
  }
6850

6851 6852 6853 6854 6855 6856
  m_cols_ai.bitmap= m_cols.bitmap; /* See explanation in is_valid() */

  if (event_type == UPDATE_ROWS_EVENT)
  {
    DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));

6857
    /* if bitmap_init fails, caught in is_valid() */
6858 6859
    if (likely(!bitmap_init(&m_cols_ai,
                            m_width <= sizeof(m_bitbuf_ai)*8 ? m_bitbuf_ai : NULL,
6860
                            m_width,
6861 6862 6863 6864
                            false)))
    {
      DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));
      memcpy(m_cols_ai.bitmap, ptr_after_width, (m_width + 7) / 8);
6865
      create_last_word_mask(&m_cols_ai);
6866
      ptr_after_width+= (m_width + 7) / 8;
6867 6868
      DBUG_DUMP("m_cols_ai", (uchar*) m_cols_ai.bitmap,
                no_bytes_in_map(&m_cols_ai));
6869 6870 6871 6872 6873 6874 6875 6876 6877
    }
    else
    {
      // Needed because bitmap_init() does not set it to null on failure
      m_cols_ai.bitmap= 0;
      DBUG_VOID_RETURN;
    }
  }

6878
  const uchar* const ptr_rows_data= (const uchar*) ptr_after_width;
6879

6880
  size_t const data_size= event_len - (ptr_rows_data - (const uchar *) buf);
6881
  DBUG_PRINT("info",("m_table_id: %lu  m_flags: %d  m_width: %lu  data_size: %lu",
6882
                     m_table_id, m_flags, m_width, (ulong) data_size));
6883

6884
  m_rows_buf= (uchar*) my_malloc(data_size, MYF(MY_WME));
6885 6886
  if (likely((bool)m_rows_buf))
  {
6887
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
6888
    m_curr_row= m_rows_buf;
6889
#endif
6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904
    m_rows_end= m_rows_buf + data_size;
    m_rows_cur= m_rows_end;
    memcpy(m_rows_buf, ptr_rows_data, data_size);
  }
  else
    m_cols.bitmap= 0; // to not free it

  DBUG_VOID_RETURN;
}

Rows_log_event::~Rows_log_event()
{
  if (m_cols.bitmap == m_bitbuf) // no my_malloc happened
    m_cols.bitmap= 0; // so no my_free in bitmap_free
  bitmap_free(&m_cols); // To pair with bitmap_init().
6905
  my_free((uchar*)m_rows_buf, MYF(MY_ALLOW_ZERO_PTR));
6906 6907
}

6908 6909 6910 6911
int Rows_log_event::get_data_size()
{
  int const type_code= get_type_code();

6912 6913
  uchar buf[sizeof(m_width)+1];
  uchar *end= net_store_length(buf, (m_width + 7) / 8);
6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930

  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                  return 6 + no_bytes_in_map(&m_cols) + (end - buf) +
                  (type_code == UPDATE_ROWS_EVENT ? no_bytes_in_map(&m_cols_ai) : 0) +
                  (m_rows_cur - m_rows_buf););
  int data_size= ROWS_HEADER_LEN;
  data_size+= no_bytes_in_map(&m_cols);
  data_size+= end - buf;

  if (type_code == UPDATE_ROWS_EVENT)
    data_size+= no_bytes_in_map(&m_cols_ai);

  data_size+= (m_rows_cur - m_rows_buf);
  return data_size; 
}


6931
#ifndef MYSQL_CLIENT
6932
int Rows_log_event::do_add_row_data(uchar *row_data, size_t length)
6933 6934 6935 6936 6937 6938
{
  /*
    When the table has a primary key, we would probably want, by default, to
    log only the primary key value instead of the entire "before image". This
    would save binlog space. TODO
  */
6939
  DBUG_ENTER("Rows_log_event::do_add_row_data");
6940 6941
  DBUG_PRINT("enter", ("row_data: 0x%lx  length: %lu", (ulong) row_data,
                       (ulong) length));
6942 6943 6944 6945 6946
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
#ifndef HAVE_purify
6947
  DBUG_DUMP("row_data", row_data, min(length, 32));
6948
#endif
6949 6950

  DBUG_ASSERT(m_rows_buf <= m_rows_cur);
6951
  DBUG_ASSERT(!m_rows_buf || m_rows_end && m_rows_buf < m_rows_end);
6952 6953 6954
  DBUG_ASSERT(m_rows_cur <= m_rows_end);

  /* The cast will always work since m_rows_cur <= m_rows_end */
6955
  if (static_cast<size_t>(m_rows_end - m_rows_cur) <= length)
6956
  {
6957
    size_t const block_size= 1024;
6958
    my_ptrdiff_t const cur_size= m_rows_cur - m_rows_buf;
6959
    my_ptrdiff_t const new_alloc= 
6960
        block_size * ((cur_size + length + block_size - 1) / block_size);
6961

6962
    uchar* const new_buf= (uchar*)my_realloc((uchar*)m_rows_buf, (uint) new_alloc,
6963
                                           MYF(MY_ALLOW_ZERO_PTR|MY_WME));
6964 6965 6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978 6979 6980
    if (unlikely(!new_buf))
      DBUG_RETURN(HA_ERR_OUT_OF_MEM);

    /* If the memory moved, we need to move the pointers */
    if (new_buf != m_rows_buf)
    {
      m_rows_buf= new_buf;
      m_rows_cur= m_rows_buf + cur_size;
    }

    /*
       The end pointer should always be changed to point to the end of
       the allocated memory.
    */
    m_rows_end= m_rows_buf + new_alloc;
  }

6981
  DBUG_ASSERT(m_rows_cur + length <= m_rows_end);
6982 6983
  memcpy(m_rows_cur, row_data, length);
  m_rows_cur+= length;
6984
  m_row_count++;
6985 6986 6987 6988 6989
  DBUG_RETURN(0);
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
6990
int Rows_log_event::do_apply_event(Relay_log_info const *rli)
6991
{
6992
  DBUG_ENTER("Rows_log_event::do_apply_event(Relay_log_info*)");
6993
  int error= 0;
6994
  /*
6995 6996 6997
    If m_table_id == ~0UL, then we have a dummy event that does not
    contain any data.  In that case, we just remove all tables in the
    tables_to_lock list, close the thread tables, and return with
6998
    success.
6999
   */
7000
  if (m_table_id == ~0UL)
7001 7002 7003 7004 7005 7006 7007
  {
    /*
       This one is supposed to be set: just an extra check so that
       nothing strange has happened.
     */
    DBUG_ASSERT(get_flags(STMT_END_F));

7008
    const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
7009
    close_thread_tables(thd);
7010 7011 7012
    thd->clear_error();
    DBUG_RETURN(0);
  }
7013 7014 7015

  /*
    'thd' has been set by exec_relay_log_event(), just before calling
7016
    do_apply_event(). We still check here to prevent future coding
7017
    errors.
7018 7019 7020 7021
  */
  DBUG_ASSERT(rli->sql_thd == thd);

  /*
7022 7023 7024 7025
    If there is no locks taken, this is the first binrow event seen
    after the table map events.  We should then lock all the tables
    used in the transaction and proceed with execution of the actual
    event.
7026
  */
7027
  if (!thd->lock)
7028 7029
  {
    /*
7030 7031 7032 7033 7034 7035 7036
      Lock_tables() reads the contents of thd->lex, so they must be
      initialized.

      We also call the mysql_reset_thd_for_next_command(), since this
      is the logical start of the next "statement". Note that this
      call might reset the value of current_stmt_binlog_row_based, so
      we need to do any changes to that value after this function.
7037
    */
7038
    lex_start(thd);
7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051
    mysql_reset_thd_for_next_command(thd);

    /*
      Check if the slave is set to use SBR.  If so, it should switch
      to using RBR until the end of the "statement", i.e., next
      STMT_END_F or next error.
    */
    if (!thd->current_stmt_binlog_row_based &&
        mysql_bin_log.is_open() && (thd->options & OPTION_BIN_LOG))
    {
      thd->set_current_stmt_binlog_row_based();
    }

7052

7053 7054 7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068 7069
    /*
      There are a few flags that are replicated with each row event.
      Make sure to set/clear them before executing the main body of
      the event.
    */
    if (get_flags(NO_FOREIGN_KEY_CHECKS_F))
        thd->options|= OPTION_NO_FOREIGN_KEY_CHECKS;
    else
        thd->options&= ~OPTION_NO_FOREIGN_KEY_CHECKS;

    if (get_flags(RELAXED_UNIQUE_CHECKS_F))
        thd->options|= OPTION_RELAXED_UNIQUE_CHECKS;
    else
        thd->options&= ~OPTION_RELAXED_UNIQUE_CHECKS;
    /* A small test to verify that objects have consistent types */
    DBUG_ASSERT(sizeof(thd->options) == sizeof(OPTION_RELAXED_UNIQUE_CHECKS));

7070
    if (simple_open_n_lock_tables(thd, rli->tables_to_lock))
7071
    {
7072 7073
      uint actual_error= thd->main_da.sql_errno();
      if (thd->is_slave_error || thd->is_fatal_error)
7074
      {
7075 7076 7077 7078 7079 7080 7081 7082 7083
        /*
          Error reporting borrowed from Query_log_event with many excessive
          simplifications (we don't honour --slave-skip-errors)
        */
        rli->report(ERROR_LEVEL, actual_error,
                    "Error '%s' on opening tables",
                    (actual_error ? thd->main_da.message() :
                     "unexpected success or fatal error"));
        thd->is_slave_error= 1;
7084
      }
7085 7086
      const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
      DBUG_RETURN(actual_error);
7087
    }
7088 7089 7090 7091 7092 7093 7094 7095 7096 7097

    /*
      When the open and locking succeeded, we check all tables to
      ensure that they still have the correct type.

      We can use a down cast here since we know that every table added
      to the tables_to_lock is a RPL_TABLE_LIST.
    */

    {
7098
      RPL_TABLE_LIST *ptr= rli->tables_to_lock;
7099 7100 7101 7102 7103 7104
      for ( ; ptr ; ptr= static_cast<RPL_TABLE_LIST*>(ptr->next_global))
      {
        if (ptr->m_tabledef.compatible_with(rli, ptr->table))
        {
          mysql_unlock_tables(thd, thd->lock);
          thd->lock= 0;
7105
          thd->is_slave_error= 1;
7106
          const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
7107 7108 7109 7110 7111
          DBUG_RETURN(ERR_BAD_TABLE_DEF);
        }
      }
    }

7112
    /*
7113 7114
      ... and then we add all the tables to the table map and remove
      them from tables to lock.
7115 7116 7117

      We also invalidate the query cache for all the tables, since
      they will now be changed.
7118 7119 7120 7121 7122 7123 7124

      TODO [/Matz]: Maybe the query cache should not be invalidated
      here? It might be that a table is not changed, even though it
      was locked for the statement.  We do know that each
      Rows_log_event contain at least one row, so after processing one
      Rows_log_event, we can invalidate the query cache for the
      associated table.
7125
     */
7126
    for (TABLE_LIST *ptr= rli->tables_to_lock ; ptr ; ptr= ptr->next_global)
7127
    {
7128
      const_cast<Relay_log_info*>(rli)->m_table_map.set_table(ptr->table_id, ptr->table);
7129
    }
7130 7131 7132
#ifdef HAVE_QUERY_CACHE
    query_cache.invalidate_locked_for_write(rli->tables_to_lock);
#endif
7133 7134
  }

7135 7136
  TABLE* 
    table= 
7137
    m_table= const_cast<Relay_log_info*>(rli)->m_table_map.get_table(m_table_id);
7138

7139 7140
  DBUG_PRINT("debug", ("m_table: 0x%lx, m_table_id: %lu", (ulong) m_table, m_table_id));

7141 7142 7143 7144
  if (table)
  {
    /*
      table == NULL means that this table should not be replicated
7145
      (this was set up by Table_map_log_event::do_apply_event()
7146
      which tested replicate-* rules).
7147
    */
7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158

    /*
      It's not needed to set_time() but
      1) it continues the property that "Time" in SHOW PROCESSLIST shows how
      much slave is behind
      2) it will be needed when we allow replication from a table with no
      TIMESTAMP column to a table with one.
      So we call set_time(), like in SBR. Presently it changes nothing.
    */
    thd->set_time((time_t)when);

7159 7160 7161 7162 7163 7164 7165 7166 7167
    /*
      Now we are in a statement and will stay in a statement until we
      see a STMT_END_F.

      We set this flag here, before actually applying any rows, in
      case the SQL thread is stopped and we need to detect that we're
      inside a statement and halting abruptly might cause problems
      when restarting.
     */
7168
    const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
7169

7170 7171
     if ( m_width == table->s->fields && bitmap_is_set_all(&m_cols))
      set_flags(COMPLETE_ROWS_F);
7172

7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184 7185 7186 7187 7188
    /* 
      Set tables write and read sets.
      
      Read_set contains all slave columns (in case we are going to fetch
      a complete record from slave)
      
      Write_set equals the m_cols bitmap sent from master but it can be 
      longer if slave has extra columns. 
     */ 

    DBUG_PRINT_BITSET("debug", "Setting table's write_set from: %s", &m_cols);
    
    bitmap_set_all(table->read_set);
    bitmap_set_all(table->write_set);
    if (!get_flags(COMPLETE_ROWS_F))
      bitmap_intersect(table->write_set,&m_cols);
7189

7190 7191
    this->slave_exec_mode= slave_exec_mode_options; // fix the mode

7192 7193
    // Do event specific preparations 
    error= do_before_row_operations(rli);
7194

7195
    // row processing loop
7196

7197 7198
    while (error == 0 && m_curr_row < m_rows_end)
    {
7199 7200 7201 7202
      /* in_use can have been set to NULL in close_tables_for_reopen */
      THD* old_thd= table->in_use;
      if (!table->in_use)
        table->in_use= thd;
7203 7204 7205

      error= do_exec_row(rli);

7206 7207 7208
      DBUG_PRINT("info", ("error: %s", HA_ERR(error)));
      DBUG_ASSERT(error != HA_ERR_RECORD_DELETED);

7209 7210 7211 7212 7213
      table->in_use = old_thd;
      switch (error)
      {
      case 0:
	break;
7214 7215 7216 7217 7218 7219 7220 7221 7222 7223
      /*
        The following list of "idempotent" errors
        means that an error from the list might happen
        because of idempotent (more than once) 
        applying of a binlog file.
        Notice, that binlog has a  ddl operation its
        second applying may cause

        case HA_ERR_TABLE_DEF_CHANGED:
        case HA_ERR_CANNOT_ADD_FOREIGN:
7224

7225
        which are not included into to the list.
7226 7227 7228

        Note that HA_ERR_RECORD_DELETED is not in the list since
        do_exec_row() should not return that error code.
7229
      */
7230
      case HA_ERR_RECORD_CHANGED:
7231 7232
      case HA_ERR_KEY_NOT_FOUND:
      case HA_ERR_END_OF_FILE:
7233 7234 7235 7236 7237 7238 7239 7240 7241 7242 7243 7244 7245 7246
      case HA_ERR_FOUND_DUPP_KEY:
      case HA_ERR_FOUND_DUPP_UNIQUE:
      case HA_ERR_FOREIGN_DUPLICATE_KEY:
      case HA_ERR_NO_REFERENCED_ROW:
      case HA_ERR_ROW_IS_REFERENCED:

        if (bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1)
        {
          if (global_system_variables.log_warnings)
            slave_rows_error_report(WARNING_LEVEL, error, rli, thd, table,
                                    get_type_str(),
                                    RPL_LOG_NAME, (ulong) log_pos);
          error= 0;
        }
7247
        break;
7248
        
7249
      default:
7250
	thd->is_slave_error= 1;
7251 7252 7253
	break;
      }

7254 7255 7256 7257 7258 7259 7260
      /*
       If m_curr_row_end  was not set during event execution (e.g., because
       of errors) we can't proceed to the next row. If the error is transient
       (i.e., error==0 at this point) we must call unpack_current_row() to set 
       m_curr_row_end.
      */ 
   
7261 7262 7263
      DBUG_PRINT("info", ("curr_row: 0x%lu; curr_row_end: 0x%lu; rows_end: 0x%lu",
                          (ulong) m_curr_row, (ulong) m_curr_row_end, (ulong) m_rows_end));

7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274 7275
      if (!m_curr_row_end && !error)
        unpack_current_row(rli);
  
      // at this moment m_curr_row_end should be set
      DBUG_ASSERT(error || m_curr_row_end != NULL); 
      DBUG_ASSERT(error || m_curr_row < m_curr_row_end);
      DBUG_ASSERT(error || m_curr_row_end <= m_rows_end);
  
      m_curr_row= m_curr_row_end;
 
    } // row processing loop

7276
    DBUG_EXECUTE_IF("STOP_SLAVE_after_first_Rows_event",
7277
                    const_cast<Relay_log_info*>(rli)->abort_slave= 1;);
7278
    error= do_after_row_operations(rli, error);
7279
    if (!cache_stmt)
7280 7281 7282 7283
    {
      DBUG_PRINT("info", ("Marked that we need to keep log"));
      thd->options|= OPTION_KEEP_LOG;
    }
7284
  } // if (table)
7285

7286
  /*
7287 7288
    We need to delay this clear until here bacause unpack_current_row() uses
    master-side table definitions stored in rli.
7289 7290
  */
  if (rli->tables_to_lock && get_flags(STMT_END_F))
7291
    const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
7292
  
7293 7294
  if (error)
  {                     /* error has occured during the transaction */
7295 7296 7297 7298 7299
    slave_rows_error_report(ERROR_LEVEL, error, rli, thd, table,
                            get_type_str(), RPL_LOG_NAME, (ulong) log_pos);
  }
  if (error)
  {
7300
    /*
7301 7302 7303 7304 7305 7306 7307 7308
      If one day we honour --skip-slave-errors in row-based replication, and
      the error should be skipped, then we would clear mappings, rollback,
      close tables, but the slave SQL thread would not stop and then may
      assume the mapping is still available, the tables are still open...
      So then we should clear mappings/rollback/close here only if this is a
      STMT_END_F.
      For now we code, knowing that error is not skippable and so slave SQL
      thread is certainly going to stop.
7309
      rollback at the caller along with sbr.
7310
    */
7311
    thd->reset_current_stmt_binlog_row_based();
7312
    const_cast<Relay_log_info*>(rli)->cleanup_context(thd, error);
7313
    thd->is_slave_error= 1;
7314 7315 7316
    DBUG_RETURN(error);
  }

7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338
  /*
    This code would ideally be placed in do_update_pos() instead, but
    since we have no access to table there, we do the setting of
    last_event_start_time here instead.
  */
  if (table && (table->s->primary_key == MAX_KEY) &&
      !cache_stmt && get_flags(STMT_END_F) == RLE_NO_FLAGS)
  {
    /*
      ------------ Temporary fix until WL#2975 is implemented ---------

      This event is not the last one (no STMT_END_F). If we stop now
      (in case of terminate_slave_thread()), how will we restart? We
      have to restart from Table_map_log_event, but as this table is
      not transactional, the rows already inserted will still be
      present, and idempotency is not guaranteed (no PK) so we risk
      that repeating leads to double insert. So we desperately try to
      continue, hope we'll eventually leave this buggy situation (by
      executing the final Rows_log_event). If we are in a hopeless
      wait (reached end of last relay log and nothing gets appended
      there), we timeout after one minute, and notify DBA about the
      problem.  When WL#2975 is implemented, just remove the member
7339
      Relay_log_info::last_event_start_time and all its occurrences.
7340
    */
7341
    const_cast<Relay_log_info*>(rli)->last_event_start_time= my_time(0);
7342 7343 7344 7345 7346
  }

  DBUG_RETURN(0);
}

7347
Log_event::enum_skip_reason
7348
Rows_log_event::do_shall_skip(Relay_log_info *rli)
7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360
{
  /*
    If the slave skip counter is 1 and this event does not end a
    statement, then we should not start executing on the next event.
    Otherwise, we defer the decision to the normal skipping logic.
  */
  if (rli->slave_skip_counter == 1 && !get_flags(STMT_END_F))
    return Log_event::EVENT_SKIP_IGNORE;
  else
    return Log_event::do_shall_skip(rli);
}

7361
int
7362
Rows_log_event::do_update_pos(Relay_log_info *rli)
7363 7364 7365 7366 7367 7368 7369
{
  DBUG_ENTER("Rows_log_event::do_update_pos");
  int error= 0;

  DBUG_PRINT("info", ("flags: %s",
                      get_flags(STMT_END_F) ? "STMT_END_F " : ""));

7370 7371 7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383 7384 7385 7386 7387
  if (get_flags(STMT_END_F))
  {
    /*
      This is the end of a statement or transaction, so close (and
      unlock) the tables we opened when processing the
      Table_map_log_event starting the statement.

      OBSERVER.  This will clear *all* mappings, not only those that
      are open for the table. There is not good handle for on-close
      actions for tables.

      NOTE. Even if we have no table ('table' == 0) we still need to be
      here, so that we increase the group relay log position. If we didn't, we
      could have a group relay log position which lags behind "forever"
      (assume the last master's transaction is ignored by the slave because of
      replicate-ignore rules).
    */
    thd->binlog_flush_pending_rows_event(true);
7388

7389 7390 7391 7392 7393 7394 7395 7396 7397 7398
    /*
      If this event is not in a transaction, the call below will, if some
      transactional storage engines are involved, commit the statement into
      them and flush the pending event to binlog.
      If this event is in a transaction, the call will do nothing, but a
      Xid_log_event will come next which will, if some transactional engines
      are involved, commit the transaction and flush the pending event to the
      binlog.
    */
    error= ha_autocommit_or_rollback(thd, 0);
7399

7400 7401 7402 7403 7404 7405 7406 7407 7408 7409
    /*
      Now what if this is not a transactional engine? we still need to
      flush the pending event to the binlog; we did it with
      thd->binlog_flush_pending_rows_event(). Note that we imitate
      what is done for real queries: a call to
      ha_autocommit_or_rollback() (sometimes only if involves a
      transactional engine), and a call to be sure to have the pending
      event flushed.
    */

7410
    thd->reset_current_stmt_binlog_row_based();
7411

7412
    rli->cleanup_context(thd, 0);
7413 7414
    if (error == 0)
    {
7415 7416 7417 7418 7419 7420 7421
      /*
        Indicate that a statement is finished.
        Step the group log position if we are not in a transaction,
        otherwise increase the event log position.
       */
      rli->stmt_done(log_pos, when);

7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432
      /*
        Clear any errors pushed in thd->net.last_err* if for example "no key
        found" (as this is allowed). This is a safety measure; apparently
        those errors (e.g. when executing a Delete_rows_log_event of a
        non-existing row, like in rpl_row_mystery22.test,
        thd->net.last_error = "Can't find record in 't1'" and last_errno=1032)
        do not become visible. We still prefer to wipe them out.
      */
      thd->clear_error();
    }
    else
7433 7434 7435
      rli->report(ERROR_LEVEL, error,
                  "Error in %s event: commit of row events failed, "
                  "table `%s`.`%s`",
7436 7437
                  get_type_str(), m_table->s->db.str,
                  m_table->s->table_name.str);
7438
  }
7439
  else
7440
  {
7441
    rli->inc_event_relay_log_pos();
7442 7443
  }

7444
  DBUG_RETURN(error);
7445
}
7446

7447 7448 7449 7450 7451
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifndef MYSQL_CLIENT
bool Rows_log_event::write_data_header(IO_CACHE *file)
{
7452
  uchar buf[ROWS_HEADER_LEN];	// No need to init the buffer
7453
  DBUG_ASSERT(m_table_id != ~0UL);
7454 7455 7456 7457 7458 7459 7460 7461 7462 7463 7464 7465 7466 7467 7468 7469 7470
  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                  {
                    int4store(buf + 0, m_table_id);
                    int2store(buf + 4, m_flags);
                    return (my_b_safe_write(file, buf, 6));
                  });
  int6store(buf + RW_MAPID_OFFSET, (ulonglong)m_table_id);
  int2store(buf + RW_FLAGS_OFFSET, m_flags);
  return (my_b_safe_write(file, buf, ROWS_HEADER_LEN));
}

bool Rows_log_event::write_data_body(IO_CACHE*file)
{
  /*
     Note that this should be the number of *bits*, not the number of
     bytes.
  */
7471
  uchar sbuf[sizeof(m_width)];
7472
  my_ptrdiff_t const data_size= m_rows_cur - m_rows_buf;
7473
  bool res= false;
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  uchar *const sbuf_end= net_store_length(sbuf, (size_t) m_width);
  DBUG_ASSERT(static_cast<size_t>(sbuf_end - sbuf) <= sizeof(sbuf));
7476

7477 7478
  DBUG_DUMP("m_width", sbuf, (size_t) (sbuf_end - sbuf));
  res= res || my_b_safe_write(file, sbuf, (size_t) (sbuf_end - sbuf));
7479

7480 7481
  DBUG_DUMP("m_cols", (uchar*) m_cols.bitmap, no_bytes_in_map(&m_cols));
  res= res || my_b_safe_write(file, (uchar*) m_cols.bitmap,
7482 7483 7484 7485 7486 7487
                              no_bytes_in_map(&m_cols));
  /*
    TODO[refactor write]: Remove the "down cast" here (and elsewhere).
   */
  if (get_type_code() == UPDATE_ROWS_EVENT)
  {
7488 7489 7490
    DBUG_DUMP("m_cols_ai", (uchar*) m_cols_ai.bitmap,
              no_bytes_in_map(&m_cols_ai));
    res= res || my_b_safe_write(file, (uchar*) m_cols_ai.bitmap,
7491 7492
                                no_bytes_in_map(&m_cols_ai));
  }
7493 7494
  DBUG_DUMP("rows", m_rows_buf, data_size);
  res= res || my_b_safe_write(file, m_rows_buf, (size_t) data_size);
7495 7496 7497

  return res;

7498 7499 7500
}
#endif

7501
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
7502 7503
void Rows_log_event::pack_info(Protocol *protocol)
{
7504 7505 7506
  char buf[256];
  char const *const flagstr=
    get_flags(STMT_END_F) ? " flags: STMT_END_F" : "";
7507
  size_t bytes= my_snprintf(buf, sizeof(buf),
7508
                               "table_id: %lu%s", m_table_id, flagstr);
7509
  protocol->store(buf, bytes, &my_charset_bin);
7510 7511 7512
}
#endif

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#ifdef MYSQL_CLIENT
void Rows_log_event::print_helper(FILE *file,
                                  PRINT_EVENT_INFO *print_event_info,
                                  char const *const name)
{
  IO_CACHE *const head= &print_event_info->head_cache;
  IO_CACHE *const body= &print_event_info->body_cache;
  if (!print_event_info->short_form)
  {
    bool const last_stmt_event= get_flags(STMT_END_F);
    print_header(head, print_event_info, !last_stmt_event);
7524 7525 7526
    my_b_printf(head, "\t%s: table id %lu%s\n",
                name, m_table_id,
                last_stmt_event ? " flags: STMT_END_F" : "");
7527 7528 7529 7530 7531
    print_base64(body, print_event_info, !last_stmt_event);
  }

  if (get_flags(STMT_END_F))
  {
7532 7533
    copy_event_cache_to_file_and_reinit(head, file);
    copy_event_cache_to_file_and_reinit(body, file);
7534 7535 7536 7537
  }
}
#endif

7538
/**************************************************************************
7539
	Table_map_log_event member functions and support functions
7540 7541
**************************************************************************/

7542 7543 7544 7545
/**
  @page How replication of field metadata works.
  
  When a table map is created, the master first calls 
7546
  Table_map_log_event::save_field_metadata() which calculates how many 
7547
  values will be in the field metadata. Only those fields that require the 
7548 7549 7550 7551 7552 7553 7554
  extra data are added. The method also loops through all of the fields in 
  the table calling the method Field::save_field_metadata() which returns the
  values for the field that will be saved in the metadata and replicated to
  the slave. Once all fields have been processed, the table map is written to
  the binlog adding the size of the field metadata and the field metadata to
  the end of the body of the table map.

7555 7556 7557 7558 7559 7560 7561
  When a table map is read on the slave, the field metadata is read from the 
  table map and passed to the table_def class constructor which saves the 
  field metadata from the table map into an array based on the type of the 
  field. Field metadata values not present (those fields that do not use extra 
  data) in the table map are initialized as zero (0). The array size is the 
  same as the columns for the table on the slave.

7562 7563 7564 7565 7566 7567 7568 7569 7570 7571
  Additionally, values saved for field metadata on the master are saved as a 
  string of bytes (uchar) in the binlog. A field may require 1 or more bytes
  to store the information. In cases where values require multiple bytes 
  (e.g. values > 255), the endian-safe methods are used to properly encode 
  the values on the master and decode them on the slave. When the field
  metadata values are captured on the slave, they are stored in an array of
  type uint16. This allows the least number of casts to prevent casting bugs
  when the field metadata is used in comparisons of field attributes. When
  the field metadata is used for calculating addresses in pointer math, the
  type used is uint32. 
7572 7573
*/

7574
#if !defined(MYSQL_CLIENT)
7575 7576 7577 7578 7579 7580
/**
  Save the field metadata based on the real_type of the field.
  The metadata saved depends on the type of the field. Some fields
  store a single byte for pack_length() while others store two bytes
  for field_length (max length).
  
7581
  @retval  0  Ok.
7582

7583 7584
  @todo
  We may want to consider changing the encoding of the information.
7585 7586 7587 7588 7589 7590 7591 7592 7593 7594 7595 7596 7597 7598 7599 7600 7601 7602 7603
  Currently, the code attempts to minimize the number of bytes written to 
  the tablemap. There are at least two other alternatives; 1) using 
  net_store_length() to store the data allowing it to choose the number of
  bytes that are appropriate thereby making the code much easier to 
  maintain (only 1 place to change the encoding), or 2) use a fixed number
  of bytes for each field. The problem with option 1 is that net_store_length()
  will use one byte if the value < 251, but 3 bytes if it is > 250. Thus,
  for fields like CHAR which can be no larger than 255 characters, the method
  will use 3 bytes when the value is > 250. Further, every value that is
  encoded using 2 parts (e.g., pack_length, field_length) will be numerically
  > 250 therefore will use 3 bytes for eah value. The problem with option 2
  is less wasteful for space but does waste 1 byte for every field that does
  not encode 2 parts. 
*/
int Table_map_log_event::save_field_metadata()
{
  DBUG_ENTER("Table_map_log_event::save_field_metadata");
  int index= 0;
  for (unsigned int i= 0 ; i < m_table->s->fields ; i++)
7604 7605
    index+= m_table->s->field[i]->save_field_metadata(&m_field_metadata[index]);
  DBUG_RETURN(index);
7606 7607 7608
}
#endif /* !defined(MYSQL_CLIENT) */

7609 7610 7611 7612 7613 7614 7615 7616
/*
  Constructor used to build an event for writing to the binary log.
  Mats says tbl->s lives longer than this event so it's ok to copy pointers
  (tbl->s->db etc) and not pointer content.
 */
#if !defined(MYSQL_CLIENT)
Table_map_log_event::Table_map_log_event(THD *thd, TABLE *tbl, ulong tid,
                                         bool is_transactional, uint16 flags)
7617
  : Log_event(thd, 0, true),
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    m_table(tbl),
    m_dbnam(tbl->s->db.str),
    m_dblen(m_dbnam ? tbl->s->db.length : 0),
    m_tblnam(tbl->s->table_name.str),
    m_tbllen(tbl->s->table_name.length),
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    m_colcnt(tbl->s->fields),
    m_memory(NULL),
    m_table_id(tid),
    m_flags(flags),
    m_data_size(0),
    m_field_metadata(0),
    m_field_metadata_size(0),
    m_null_bits(0),
    m_meta_memory(NULL)
7632
{
7633
  DBUG_ASSERT(m_table_id != ~0UL);
7634 7635 7636 7637 7638 7639 7640 7641 7642 7643 7644 7645
  /*
    In TABLE_SHARE, "db" and "table_name" are 0-terminated (see this comment in
    table.cc / alloc_table_share():
      Use the fact the key is db/0/table_name/0
    As we rely on this let's assert it.
  */
  DBUG_ASSERT((tbl->s->db.str == 0) ||
              (tbl->s->db.str[tbl->s->db.length] == 0));
  DBUG_ASSERT(tbl->s->table_name.str[tbl->s->table_name.length] == 0);


  m_data_size=  TABLE_MAP_HEADER_LEN;
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7646
  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master", m_data_size= 6;);
7647 7648 7649 7650
  m_data_size+= m_dblen + 2;	// Include length and terminating \0
  m_data_size+= m_tbllen + 2;	// Include length and terminating \0
  m_data_size+= 1 + m_colcnt;	// COLCNT and column types

7651
  /* If malloc fails, caught in is_valid() */
7652
  if ((m_memory= (uchar*) my_malloc(m_colcnt, MYF(MY_WME))))
7653
  {
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7654
    m_coltype= reinterpret_cast<uchar*>(m_memory);
7655 7656 7657
    for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
      m_coltype[i]= m_table->field[i]->type();
  }
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  /*
    Calculate a bitmap for the results of maybe_null() for all columns.
    The bitmap is used to determine when there is a column from the master
    that is not on the slave and is null and thus not in the row data during
    replication.
  */
  uint num_null_bytes= (m_table->s->fields + 7) / 8;
  m_data_size+= num_null_bytes;
  m_meta_memory= (uchar *)my_multi_malloc(MYF(MY_WME),
                                 &m_null_bits, num_null_bytes,
7669
                                 &m_field_metadata, (m_colcnt * 2),
7670
                                 NULL);
7671 7672 7673 7674 7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688

  bzero(m_field_metadata, (m_colcnt * 2));

  /*
    Create an array for the field metadata and store it.
  */
  m_field_metadata_size= save_field_metadata();
  DBUG_ASSERT(m_field_metadata_size <= (m_colcnt * 2));

  /*
    Now set the size of the data to the size of the field metadata array
    plus one or two bytes for number of elements in the field metadata array.
  */
  if (m_field_metadata_size > 255)
    m_data_size+= m_field_metadata_size + 2; 
  else
    m_data_size+= m_field_metadata_size + 1; 

7689 7690 7691 7692 7693
  bzero(m_null_bits, num_null_bytes);
  for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
    if (m_table->field[i]->maybe_null())
      m_null_bits[(i / 8)]+= 1 << (i % 8);

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}
#endif /* !defined(MYSQL_CLIENT) */

/*
  Constructor used by slave to read the event from the binary log.
 */
#if defined(HAVE_REPLICATION)
Table_map_log_event::Table_map_log_event(const char *buf, uint event_len,
                                         const Format_description_log_event
                                         *description_event)

  : Log_event(buf, description_event),
#ifndef MYSQL_CLIENT
7707
    m_table(NULL),
7708
#endif
7709 7710 7711 7712 7713
    m_dbnam(NULL), m_dblen(0), m_tblnam(NULL), m_tbllen(0),
    m_colcnt(0), m_coltype(0),
    m_memory(NULL), m_table_id(ULONG_MAX), m_flags(0),
    m_data_size(0), m_field_metadata(0), m_field_metadata_size(0),
    m_null_bits(0), m_meta_memory(NULL)
7714
{
7715
  unsigned int bytes_read= 0;
7716 7717 7718 7719
  DBUG_ENTER("Table_map_log_event::Table_map_log_event(const char*,uint,...)");

  uint8 common_header_len= description_event->common_header_len;
  uint8 post_header_len= description_event->post_header_len[TABLE_MAP_EVENT-1];
7720
  DBUG_PRINT("info",("event_len: %u  common_header_len: %d  post_header_len: %d",
7721 7722
                     event_len, common_header_len, post_header_len));

7723 7724 7725 7726 7727
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
#ifndef HAVE_purify
7728
  DBUG_DUMP("event buffer", (uchar*) buf, event_len);
7729
#endif
7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 7741 7742 7743

  /* Read the post-header */
  const char *post_start= buf + common_header_len;

  post_start+= TM_MAPID_OFFSET;
  if (post_header_len == 6)
  {
    /* Master is of an intermediate source tree before 5.1.4. Id is 4 bytes */
    m_table_id= uint4korr(post_start);
    post_start+= 4;
  }
  else
  {
    DBUG_ASSERT(post_header_len == TABLE_MAP_HEADER_LEN);
7744
    m_table_id= (ulong) uint6korr(post_start);
7745 7746 7747
    post_start+= TM_FLAGS_OFFSET;
  }

7748
  DBUG_ASSERT(m_table_id != ~0UL);
7749 7750 7751 7752 7753 7754 7755

  m_flags= uint2korr(post_start);

  /* Read the variable part of the event */
  const char *const vpart= buf + common_header_len + post_header_len;

  /* Extract the length of the various parts from the buffer */
7756
  uchar const *const ptr_dblen= (uchar const*)vpart + 0;
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7757
  m_dblen= *(uchar*) ptr_dblen;
7758 7759

  /* Length of database name + counter + terminating null */
7760
  uchar const *const ptr_tbllen= ptr_dblen + m_dblen + 2;
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7761
  m_tbllen= *(uchar*) ptr_tbllen;
7762 7763

  /* Length of table name + counter + terminating null */
7764
  uchar const *const ptr_colcnt= ptr_tbllen + m_tbllen + 2;
7765 7766
  uchar *ptr_after_colcnt= (uchar*) ptr_colcnt;
  m_colcnt= net_field_length(&ptr_after_colcnt);
7767

7768
  DBUG_PRINT("info",("m_dblen: %lu  off: %ld  m_tbllen: %lu  off: %ld  m_colcnt: %lu  off: %ld",
7769 7770
                     (ulong) m_dblen, (long) (ptr_dblen-(const uchar*)vpart), 
                     (ulong) m_tbllen, (long) (ptr_tbllen-(const uchar*)vpart),
7771
                     m_colcnt, (long) (ptr_colcnt-(const uchar*)vpart)));
7772

7773
  /* Allocate mem for all fields in one go. If fails, caught in is_valid() */
7774 7775 7776 7777 7778
  m_memory= (uchar*) my_multi_malloc(MYF(MY_WME),
                                     &m_dbnam, (uint) m_dblen + 1,
                                     &m_tblnam, (uint) m_tbllen + 1,
                                     &m_coltype, (uint) m_colcnt,
                                     NullS);
7779 7780 7781 7782

  if (m_memory)
  {
    /* Copy the different parts into their memory */
7783 7784
    strncpy(const_cast<char*>(m_dbnam), (const char*)ptr_dblen  + 1, m_dblen + 1);
    strncpy(const_cast<char*>(m_tblnam), (const char*)ptr_tbllen + 1, m_tbllen + 1);
7785
    memcpy(m_coltype, ptr_after_colcnt, m_colcnt);
7786 7787 7788 7789 7790 7791 7792

    ptr_after_colcnt= ptr_after_colcnt + m_colcnt;
    bytes_read= ptr_after_colcnt - (uchar *)buf;
    DBUG_PRINT("info", ("Bytes read: %d.\n", bytes_read));
    if (bytes_read < event_len)
    {
      m_field_metadata_size= net_field_length(&ptr_after_colcnt);
7793
      DBUG_ASSERT(m_field_metadata_size <= (m_colcnt * 2));
7794 7795 7796 7797 7798 7799 7800 7801 7802
      uint num_null_bytes= (m_colcnt + 7) / 8;
      m_meta_memory= (uchar *)my_multi_malloc(MYF(MY_WME),
                                     &m_null_bits, num_null_bytes,
                                     &m_field_metadata, m_field_metadata_size,
                                     NULL);
      memcpy(m_field_metadata, ptr_after_colcnt, m_field_metadata_size);
      ptr_after_colcnt= (uchar*)ptr_after_colcnt + m_field_metadata_size;
      memcpy(m_null_bits, ptr_after_colcnt, num_null_bytes);
    }
7803 7804 7805 7806 7807 7808 7809 7810
  }

  DBUG_VOID_RETURN;
}
#endif

Table_map_log_event::~Table_map_log_event()
{
7811
  my_free(m_meta_memory, MYF(MY_ALLOW_ZERO_PTR));
7812 7813 7814 7815 7816 7817 7818 7819 7820 7821 7822 7823 7824 7825 7826
  my_free(m_memory, MYF(MY_ALLOW_ZERO_PTR));
}

/*
  Return value is an error code, one of:

      -1     Failure to open table   [from open_tables()]
       0     Success
       1     No room for more tables [from set_table()]
       2     Out of memory           [from set_table()]
       3     Wrong table definition
       4     Daisy-chaining RBR with SBR not possible
 */

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
7827
int Table_map_log_event::do_apply_event(Relay_log_info const *rli)
7828
{
7829 7830 7831 7832
  RPL_TABLE_LIST *table_list;
  char *db_mem, *tname_mem;
  size_t dummy_len;
  void *memory;
7833
  DBUG_ENTER("Table_map_log_event::do_apply_event(Relay_log_info*)");
7834 7835 7836 7837 7838 7839 7840
  DBUG_ASSERT(rli->sql_thd == thd);

  /* Step the query id to mark what columns that are actually used. */
  pthread_mutex_lock(&LOCK_thread_count);
  thd->query_id= next_query_id();
  pthread_mutex_unlock(&LOCK_thread_count);

7841 7842 7843 7844 7845
  if (!(memory= my_multi_malloc(MYF(MY_WME),
                                &table_list, (uint) sizeof(RPL_TABLE_LIST),
                                &db_mem, (uint) NAME_LEN + 1,
                                &tname_mem, (uint) NAME_LEN + 1,
                                NullS)))
7846
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
7847 7848 7849 7850 7851 7852 7853 7854 7855 7856

  bzero(table_list, sizeof(*table_list));
  table_list->db = db_mem;
  table_list->alias= table_list->table_name = tname_mem;
  table_list->lock_type= TL_WRITE;
  table_list->next_global= table_list->next_local= 0;
  table_list->table_id= m_table_id;
  table_list->updating= 1;
  strmov(table_list->db, rpl_filter->get_rewrite_db(m_dbnam, &dummy_len));
  strmov(table_list->table_name, m_tblnam);
7857 7858 7859

  int error= 0;

7860 7861 7862
  if (rli->sql_thd->slave_thread /* filtering is for slave only */ &&
      (!rpl_filter->db_ok(table_list->db) ||
       (rpl_filter->is_on() && !rpl_filter->tables_ok("", table_list))))
7863
  {
7864
    my_free(memory, MYF(MY_WME));
7865 7866
  }
  else
7867
  {
7868
    DBUG_ASSERT(thd->lex->query_tables != table_list);
7869

7870 7871 7872
    /*
      Use placement new to construct the table_def instance in the
      memory allocated for it inside table_list.
7873 7874 7875

      The memory allocated by the table_def structure (i.e., not the
      memory allocated *for* the table_def structure) is released
7876
      inside Relay_log_info::clear_tables_to_lock() by calling the
7877
      table_def destructor explicitly.
7878
    */
7879 7880
    new (&table_list->m_tabledef) table_def(m_coltype, m_colcnt, 
         m_field_metadata, m_field_metadata_size, m_null_bits);
7881
    table_list->m_tabledef_valid= TRUE;
7882 7883

    /*
7884
      We record in the slave's information that the table should be
mats@romeo.(none)'s avatar
mats@romeo.(none) committed
7885
      locked by linking the table into the list of tables to lock.
7886
    */
7887
    table_list->next_global= table_list->next_local= rli->tables_to_lock;
7888 7889
    const_cast<Relay_log_info*>(rli)->tables_to_lock= table_list;
    const_cast<Relay_log_info*>(rli)->tables_to_lock_count++;
7890
    /* 'memory' is freed in clear_tables_to_lock */
7891 7892
  }

7893
  DBUG_RETURN(error);
7894
}
7895

7896
Log_event::enum_skip_reason
7897
Table_map_log_event::do_shall_skip(Relay_log_info *rli)
7898 7899 7900 7901 7902
{
  /*
    If the slave skip counter is 1, then we should not start executing
    on the next event.
  */
7903
  return continue_group(rli);
7904 7905
}

7906
int Table_map_log_event::do_update_pos(Relay_log_info *rli)
7907 7908 7909 7910 7911
{
  rli->inc_event_relay_log_pos();
  return 0;
}

7912 7913 7914 7915 7916
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifndef MYSQL_CLIENT
bool Table_map_log_event::write_data_header(IO_CACHE *file)
{
7917
  DBUG_ASSERT(m_table_id != ~0UL);
7918
  uchar buf[TABLE_MAP_HEADER_LEN];
7919 7920 7921 7922 7923 7924 7925 7926 7927 7928 7929 7930 7931 7932 7933 7934 7935 7936 7937
  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                  {
                    int4store(buf + 0, m_table_id);
                    int2store(buf + 4, m_flags);
                    return (my_b_safe_write(file, buf, 6));
                  });
  int6store(buf + TM_MAPID_OFFSET, (ulonglong)m_table_id);
  int2store(buf + TM_FLAGS_OFFSET, m_flags);
  return (my_b_safe_write(file, buf, TABLE_MAP_HEADER_LEN));
}

bool Table_map_log_event::write_data_body(IO_CACHE *file)
{
  DBUG_ASSERT(m_dbnam != NULL);
  DBUG_ASSERT(m_tblnam != NULL);
  /* We use only one byte per length for storage in event: */
  DBUG_ASSERT(m_dblen < 128);
  DBUG_ASSERT(m_tbllen < 128);

7938 7939
  uchar const dbuf[]= { (uchar) m_dblen };
  uchar const tbuf[]= { (uchar) m_tbllen };
7940

7941 7942 7943
  uchar cbuf[sizeof(m_colcnt)];
  uchar *const cbuf_end= net_store_length(cbuf, (size_t) m_colcnt);
  DBUG_ASSERT(static_cast<size_t>(cbuf_end - cbuf) <= sizeof(cbuf));
7944

7945 7946 7947 7948
  /*
    Store the size of the field metadata.
  */
  uchar mbuf[sizeof(m_field_metadata_size)];
7949
  uchar *const mbuf_end= net_store_length(mbuf, m_field_metadata_size);
7950

7951
  return (my_b_safe_write(file, dbuf,      sizeof(dbuf)) ||
7952
          my_b_safe_write(file, (const uchar*)m_dbnam,   m_dblen+1) ||
7953
          my_b_safe_write(file, tbuf,      sizeof(tbuf)) ||
7954 7955
          my_b_safe_write(file, (const uchar*)m_tblnam,  m_tbllen+1) ||
          my_b_safe_write(file, cbuf, (size_t) (cbuf_end - cbuf)) ||
7956 7957 7958 7959
          my_b_safe_write(file, m_coltype, m_colcnt) ||
          my_b_safe_write(file, mbuf, (size_t) (mbuf_end - mbuf)) ||
          my_b_safe_write(file, m_field_metadata, m_field_metadata_size),
          my_b_safe_write(file, m_null_bits, (m_colcnt + 7) / 8));
7960 7961 7962 7963 7964 7965 7966 7967 7968 7969
 }
#endif

#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)

/*
  Print some useful information for the SHOW BINARY LOG information
  field.
 */

7970
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
7971 7972 7973
void Table_map_log_event::pack_info(Protocol *protocol)
{
    char buf[256];
7974
    size_t bytes= my_snprintf(buf, sizeof(buf),
7975
                                 "table_id: %lu (%s.%s)",
7976
                              m_table_id, m_dbnam, m_tblnam);
7977 7978
    protocol->store(buf, bytes, &my_charset_bin);
}
7979 7980
#endif

7981 7982 7983 7984 7985 7986 7987 7988 7989

#endif


#ifdef MYSQL_CLIENT
void Table_map_log_event::print(FILE *file, PRINT_EVENT_INFO *print_event_info)
{
  if (!print_event_info->short_form)
  {
7990 7991 7992 7993 7994
    print_header(&print_event_info->head_cache, print_event_info, TRUE);
    my_b_printf(&print_event_info->head_cache,
                "\tTable_map: `%s`.`%s` mapped to number %lu\n",
                m_dbnam, m_tblnam, m_table_id);
    print_base64(&print_event_info->body_cache, print_event_info, TRUE);
7995 7996 7997 7998 7999 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8011 8012 8013 8014 8015 8016 8017 8018 8019 8020 8021 8022 8023 8024 8025 8026 8027 8028
  }
}
#endif

/**************************************************************************
	Write_rows_log_event member functions
**************************************************************************/

/*
  Constructor used to build an event for writing to the binary log.
 */
#if !defined(MYSQL_CLIENT)
Write_rows_log_event::Write_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
                                           ulong tid_arg,
                                           MY_BITMAP const *cols,
                                           bool is_transactional)
  : Rows_log_event(thd_arg, tbl_arg, tid_arg, cols, is_transactional)
{
}
#endif

/*
  Constructor used by slave to read the event from the binary log.
 */
#ifdef HAVE_REPLICATION
Write_rows_log_event::Write_rows_log_event(const char *buf, uint event_len,
                                           const Format_description_log_event
                                           *description_event)
: Rows_log_event(buf, event_len, WRITE_ROWS_EVENT, description_event)
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
8029 8030
int 
Write_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
8031 8032 8033
{
  int error= 0;

8034 8035 8036
  /**
     todo: to introduce a property for the event (handler?) which forces
     applying the event in the replace (idempotent) fashion.
8037
  */
8038 8039 8040 8041 8042 8043 8044 8045 8046 8047 8048 8049 8050 8051 8052 8053 8054 8055 8056 8057 8058 8059 8060 8061 8062 8063 8064 8065 8066 8067 8068 8069 8070 8071 8072 8073 8074 8075 8076
  if (bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1 ||
      m_table->s->db_type()->db_type == DB_TYPE_NDBCLUSTER)
  {
    /*
      We are using REPLACE semantics and not INSERT IGNORE semantics
      when writing rows, that is: new rows replace old rows.  We need to
      inform the storage engine that it should use this behaviour.
    */
    
    /* Tell the storage engine that we are using REPLACE semantics. */
    thd->lex->duplicates= DUP_REPLACE;
    
    /*
      Pretend we're executing a REPLACE command: this is needed for
      InnoDB and NDB Cluster since they are not (properly) checking the
      lex->duplicates flag.
    */
    thd->lex->sql_command= SQLCOM_REPLACE;
    /* 
       Do not raise the error flag in case of hitting to an unique attribute
    */
    m_table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);
    /* 
       NDB specific: update from ndb master wrapped as Write_rows
       so that the event should be applied to replace slave's row
    */
    m_table->file->extra(HA_EXTRA_WRITE_CAN_REPLACE);
    /* 
       NDB specific: if update from ndb master wrapped as Write_rows
       does not find the row it's assumed idempotent binlog applying
       is taking place; don't raise the error.
    */
    m_table->file->extra(HA_EXTRA_IGNORE_NO_KEY);
    /*
      TODO: the cluster team (Tomas?) says that it's better if the engine knows
      how many rows are going to be inserted, then it can allocate needed memory
      from the start.
    */
  }
8077 8078 8079 8080 8081 8082 8083 8084 8085 8086 8087 8088 8089 8090 8091 8092

  /*
    We need TIMESTAMP_NO_AUTO_SET otherwise ha_write_row() will not use fill
    any TIMESTAMP column with data from the row but instead will use
    the event's current time.
    As we replicate from TIMESTAMP to TIMESTAMP and slave has no extra
    columns, we know that all TIMESTAMP columns on slave will receive explicit
    data from the row, so TIMESTAMP_NO_AUTO_SET is ok.
    When we allow a table without TIMESTAMP to be replicated to a table having
    more columns including a TIMESTAMP column, or when we allow a TIMESTAMP
    column to be replicated into a BIGINT column and the slave's table has a
    TIMESTAMP column, then the slave's TIMESTAMP column will take its value
    from set_time() which we called earlier (consistent with SBR). And then in
    some cases we won't want TIMESTAMP_NO_AUTO_SET (will require some code to
    analyze if explicit data is provided for slave's TIMESTAMP columns).
  */
8093
  m_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
8094 8095 8096
  return error;
}

8097
int 
8098
Write_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const,
8099
                                              int error)
8100
{
8101
  int local_error= 0;
8102 8103 8104 8105 8106 8107 8108 8109 8110 8111 8112 8113 8114
  if (bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1 ||
      m_table->s->db_type()->db_type == DB_TYPE_NDBCLUSTER)
  {
    m_table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
    m_table->file->extra(HA_EXTRA_WRITE_CANNOT_REPLACE);
    /*
      resetting the extra with 
      table->file->extra(HA_EXTRA_NO_IGNORE_NO_KEY); 
      fires bug#27077
      explanation: file->reset() performs this duty
      ultimately. Still todo: fix
    */
  }
8115
  if ((local_error= m_table->file->ha_end_bulk_insert()))
8116
  {
8117
    m_table->file->print_error(local_error, MYF(0));
8118 8119
  }
  return error? error : local_error;
8120 8121
}

8122
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133 8134 8135

/*
  Check if there are more UNIQUE keys after the given key.
*/
static int
last_uniq_key(TABLE *table, uint keyno)
{
  while (++keyno < table->s->keys)
    if (table->key_info[keyno].flags & HA_NOSAME)
      return 0;
  return 1;
}

8136 8137 8138 8139 8140 8141 8142 8143 8144 8145 8146 8147 8148 8149 8150 8151 8152 8153 8154 8155 8156 8157 8158 8159 8160
/**
   Check if an error is a duplicate key error.

   This function is used to check if an error code is one of the
   duplicate key error, i.e., and error code for which it is sensible
   to do a <code>get_dup_key()</code> to retrieve the duplicate key.

   @param errcode The error code to check.

   @return <code>true</code> if the error code is such that
   <code>get_dup_key()</code> will return true, <code>false</code>
   otherwise.
 */
bool
is_duplicate_key_error(int errcode)
{
  switch (errcode)
  {
  case HA_ERR_FOUND_DUPP_KEY:
  case HA_ERR_FOUND_DUPP_UNIQUE:
    return true;
  }
  return false;
}

8161 8162
/**
  Write the current row into event's table.
8163

8164 8165 8166 8167 8168
  The row is located in the row buffer, pointed by @c m_curr_row member.
  Number of columns of the row is stored in @c m_width member (it can be 
  different from the number of columns in the table to which we insert). 
  Bitmap @c m_cols indicates which columns are present in the row. It is assumed 
  that event's table is already open and pointed by @c m_table.
8169

8170 8171 8172 8173 8174
  If the same record already exists in the table it can be either overwritten 
  or an error is reported depending on the value of @c overwrite flag 
  (error reporting not yet implemented). Note that the matching record can be
  different from the row we insert if we use primary keys to identify records in
  the table.
8175

8176 8177 8178 8179
  The row to be inserted can contain values only for selected columns. The 
  missing columns are filled with default values using @c prepare_record() 
  function. If a matching record is found in the table and @c overwritte is
  true, the missing columns are taken from it.
8180

8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 8195 8196
  @param  rli   Relay log info (needed for row unpacking).
  @param  overwrite  
                Shall we overwrite if the row already exists or signal 
                error (currently ignored).

  @returns Error code on failure, 0 on success.

  This method, if successful, sets @c m_curr_row_end pointer to point at the
  next row in the rows buffer. This is done when unpacking the row to be 
  inserted.

  @note If a matching record is found, it is either updated using 
  @c ha_update_row() or first deleted and then new record written.
*/ 

int
8197
Rows_log_event::write_row(const Relay_log_info *const rli,
8198
                          const bool overwrite)
8199
{
8200 8201
  DBUG_ENTER("write_row");
  DBUG_ASSERT(m_table != NULL && thd != NULL);
8202

8203
  TABLE *table= m_table;  // pointer to event's table
8204 8205 8206 8207
  int error;
  int keynum;
  auto_afree_ptr<char> key(NULL);

8208 8209
  /* fill table->record[0] with default values */

8210
  if ((error= prepare_record(table, m_width,
8211 8212 8213 8214 8215
                             TRUE /* check if columns have def. values */)))
    DBUG_RETURN(error);
  
  /* unpack row into table->record[0] */
  error= unpack_current_row(rli); // TODO: how to handle errors?
8216 8217 8218 8219 8220 8221 8222 8223 8224 8225
  if (m_curr_row == m_rows_buf)
  {
    /* this is the first row to be inserted, we estimate the rows with
       the size of the first row and use that value to initialize
       storage engine for bulk insertion */
    ulong estimated_rows= (m_rows_end - m_curr_row) / (m_curr_row_end - m_curr_row);
    m_table->file->ha_start_bulk_insert(estimated_rows);
  }
  
  
8226
#ifndef DBUG_OFF
8227
  DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
8228 8229 8230 8231
  DBUG_PRINT_BITSET("debug", "write_set = %s", table->write_set);
  DBUG_PRINT_BITSET("debug", "read_set = %s", table->read_set);
#endif

8232 8233 8234 8235 8236 8237 8238 8239
  /* 
    Try to write record. If a corresponding record already exists in the table,
    we try to change it using ha_update_row() if possible. Otherwise we delete
    it and repeat the whole process again. 

    TODO: Add safety measures against infinite looping. 
   */

8240 8241
  while ((error= table->file->ha_write_row(table->record[0])))
  {
8242 8243 8244 8245
    if (error == HA_ERR_LOCK_DEADLOCK ||
        error == HA_ERR_LOCK_WAIT_TIMEOUT ||
        (keynum= table->file->get_dup_key(error)) < 0 ||
        !overwrite)
8246
    {
8247
      DBUG_PRINT("info",("get_dup_key returns %d)", keynum));
8248
      /*
8249 8250 8251
        Deadlock, waiting for lock or just an error from the handler
        such as HA_ERR_FOUND_DUPP_KEY when overwrite is false.
        Retrieval of the duplicate key number may fail
8252 8253 8254
        - either because the error was not "duplicate key" error
        - or because the information which key is not available
      */
8255
      table->file->print_error(error, MYF(0));
8256
      DBUG_RETURN(error);
8257 8258 8259 8260 8261 8262 8263 8264 8265 8266 8267
    }
    /*
       We need to retrieve the old row into record[1] to be able to
       either update or delete the offending record.  We either:

       - use rnd_pos() with a row-id (available as dupp_row) to the
         offending row, if that is possible (MyISAM and Blackhole), or else

       - use index_read_idx() with the key that is duplicated, to
         retrieve the offending row.
     */
8268
    if (table->file->ha_table_flags() & HA_DUPLICATE_POS)
8269
    {
8270
      DBUG_PRINT("info",("Locating offending record using rnd_pos()"));
8271
      error= table->file->rnd_pos(table->record[1], table->file->dup_ref);
8272
      if (error)
8273
      {
8274
        DBUG_PRINT("info",("rnd_pos() returns error %d",error));
8275 8276
        if (error == HA_ERR_RECORD_DELETED)
          error= HA_ERR_KEY_NOT_FOUND;
8277
        table->file->print_error(error, MYF(0));
8278
        DBUG_RETURN(error);
8279
      }
8280 8281 8282
    }
    else
    {
8283 8284
      DBUG_PRINT("info",("Locating offending record using index_read_idx()"));

8285 8286
      if (table->file->extra(HA_EXTRA_FLUSH_CACHE))
      {
8287
        DBUG_PRINT("info",("Error when setting HA_EXTRA_FLUSH_CACHE"));
8288
        DBUG_RETURN(my_errno);
8289 8290 8291 8292 8293 8294
      }

      if (key.get() == NULL)
      {
        key.assign(static_cast<char*>(my_alloca(table->s->max_unique_length)));
        if (key.get() == NULL)
8295 8296
        {
          DBUG_PRINT("info",("Can't allocate key buffer"));
8297
          DBUG_RETURN(ENOMEM);
8298
        }
8299 8300
      }

8301 8302
      key_copy((uchar*)key.get(), table->record[0], table->key_info + keynum,
               0);
8303 8304 8305 8306
      error= table->file->index_read_idx_map(table->record[1], keynum,
                                             (const uchar*)key.get(),
                                             HA_WHOLE_KEY,
                                             HA_READ_KEY_EXACT);
8307
      if (error)
8308
      {
8309 8310 8311
        DBUG_PRINT("info",("index_read_idx() returns %s", HA_ERR(error)));
        if (error == HA_ERR_RECORD_DELETED)
          error= HA_ERR_KEY_NOT_FOUND;
8312
        table->file->print_error(error, MYF(0));
8313
        DBUG_RETURN(error);
8314
      }
8315 8316 8317
    }

    /*
8318
       Now, record[1] should contain the offending row.  That
8319 8320
       will enable us to update it or, alternatively, delete it (so
       that we can insert the new row afterwards).
8321
     */
8322

8323 8324 8325
    /*
      If row is incomplete we will use the record found to fill 
      missing columns.  
8326
    */
8327 8328 8329 8330 8331 8332 8333 8334 8335 8336 8337
    if (!get_flags(COMPLETE_ROWS_F))
    {
      restore_record(table,record[1]);
      error= unpack_current_row(rli);
    }

#ifndef DBUG_OFF
    DBUG_PRINT("debug",("preparing for update: before and after image"));
    DBUG_DUMP("record[1] (before)", table->record[1], table->s->reclength);
    DBUG_DUMP("record[0] (after)", table->record[0], table->s->reclength);
#endif
8338

8339
    /*
8340 8341 8342 8343 8344 8345 8346 8347 8348 8349 8350 8351 8352 8353 8354 8355 8356
       REPLACE is defined as either INSERT or DELETE + INSERT.  If
       possible, we can replace it with an UPDATE, but that will not
       work on InnoDB if FOREIGN KEY checks are necessary.

       I (Matz) am not sure of the reason for the last_uniq_key()
       check as, but I'm guessing that it's something along the
       following lines.

       Suppose that we got the duplicate key to be a key that is not
       the last unique key for the table and we perform an update:
       then there might be another key for which the unique check will
       fail, so we're better off just deleting the row and inserting
       the correct row.
     */
    if (last_uniq_key(table, keynum) &&
        !table->file->referenced_by_foreign_key())
    {
8357
      DBUG_PRINT("info",("Updating row using ha_update_row()"));
8358 8359
      error=table->file->ha_update_row(table->record[1],
                                       table->record[0]);
8360 8361 8362 8363 8364
      switch (error) {
                
      case HA_ERR_RECORD_IS_THE_SAME:
        DBUG_PRINT("info",("ignoring HA_ERR_RECORD_IS_THE_SAME error from"
                           " ha_update_row()"));
8365
        error= 0;
8366 8367 8368 8369 8370 8371
      
      case 0:
        break;
        
      default:    
        DBUG_PRINT("info",("ha_update_row() returns error %d",error));
8372
        table->file->print_error(error, MYF(0));
8373 8374
      }
      
8375
      DBUG_RETURN(error);
8376 8377 8378
    }
    else
    {
8379
      DBUG_PRINT("info",("Deleting offending row and trying to write new one again"));
8380
      if ((error= table->file->ha_delete_row(table->record[1])))
8381
      {
8382
        DBUG_PRINT("info",("ha_delete_row() returns error %d",error));
8383
        table->file->print_error(error, MYF(0));
8384
        DBUG_RETURN(error);
8385
      }
8386 8387 8388
      /* Will retry ha_write_row() with the offending row removed. */
    }
  }
8389

8390
  DBUG_RETURN(error);
8391 8392
}

8393 8394 8395
#endif

int 
8396
Write_rows_log_event::do_exec_row(const Relay_log_info *const rli)
8397
{
8398
  DBUG_ASSERT(m_table != NULL);
8399 8400 8401 8402
  int error=
    write_row(rli,        /* if 1 then overwrite */
              bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1);
    
8403 8404 8405 8406 8407
  if (error && !thd->is_error())
  {
    DBUG_ASSERT(0);
    my_error(ER_UNKNOWN_ERROR, MYF(0));
  }
8408
  
8409
  return error; 
8410
}
8411

8412 8413 8414 8415 8416
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Write_rows_log_event::print(FILE *file, PRINT_EVENT_INFO* print_event_info)
{
8417
  Rows_log_event::print_helper(file, print_event_info, "Write_rows");
8418 8419 8420 8421 8422 8423 8424 8425
}
#endif

/**************************************************************************
	Delete_rows_log_event member functions
**************************************************************************/

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
8426 8427 8428 8429 8430 8431
/*
  Compares table->record[0] and table->record[1]

  Returns TRUE if different.
*/
static bool record_compare(TABLE *table)
8432
{
8433 8434 8435 8436 8437 8438 8439 8440 8441 8442 8443 8444
  /*
    Need to set the X bit and the filler bits in both records since
    there are engines that do not set it correctly.

    In addition, since MyISAM checks that one hasn't tampered with the
    record, it is necessary to restore the old bytes into the record
    after doing the comparison.

    TODO[record format ndb]: Remove it once NDB returns correct
    records. Check that the other engines also return correct records.
   */

8445 8446 8447
  DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
  DBUG_DUMP("record[1]", table->record[1], table->s->reclength);

8448
  bool result= FALSE;
8449
  uchar saved_x[2], saved_filler[2];
8450 8451 8452 8453 8454 8455 8456 8457 8458 8459 8460 8461 8462

  if (table->s->null_bytes > 0)
  {
    for (int i = 0 ; i < 2 ; ++i)
    {
      saved_x[i]= table->record[i][0];
      saved_filler[i]= table->record[i][table->s->null_bytes - 1];
      table->record[i][0]|= 1U;
      table->record[i][table->s->null_bytes - 1]|=
        256U - (1U << table->s->last_null_bit_pos);
    }
  }

8463
  if (table->s->blob_fields + table->s->varchar_fields == 0)
8464 8465 8466 8467 8468
  {
    result= cmp_record(table,record[1]);
    goto record_compare_exit;
  }

8469 8470 8471 8472
  /* Compare null bits */
  if (memcmp(table->null_flags,
	     table->null_flags+table->s->rec_buff_length,
	     table->s->null_bytes))
8473 8474 8475 8476 8477
  {
    result= TRUE;				// Diff in NULL value
    goto record_compare_exit;
  }

8478 8479
  /* Compare updated fields */
  for (Field **ptr=table->field ; *ptr ; ptr++)
8480
  {
8481
    if ((*ptr)->cmp_binary_offset(table->s->rec_buff_length))
8482 8483 8484 8485
    {
      result= TRUE;
      goto record_compare_exit;
    }
8486
  }
8487 8488 8489 8490 8491 8492 8493 8494 8495 8496 8497 8498 8499 8500 8501

record_compare_exit:
  /*
    Restore the saved bytes.

    TODO[record format ndb]: Remove this code once NDB returns the
    correct record format.
  */
  if (table->s->null_bytes > 0)
  {
    for (int i = 0 ; i < 2 ; ++i)
    {
      table->record[i][0]= saved_x[i];
      table->record[i][table->s->null_bytes - 1]= saved_filler[i];
    }
8502
  }
8503 8504

  return result;
8505 8506
}

8507 8508
/**
  Locate the current row in event's table.
8509

8510 8511 8512 8513
  The current row is pointed by @c m_curr_row. Member @c m_width tells how many 
  columns are there in the row (this can be differnet from the number of columns 
  in the table). It is assumed that event's table is already open and pointed 
  by @c m_table.
8514

8515 8516 8517
  If a corresponding record is found in the table it is stored in 
  @c m_table->record[0]. Note that when record is located based on a primary 
  key, it is possible that the record found differs from the row being located.
8518

8519 8520 8521 8522 8523
  If no key is specified or table does not have keys, a table scan is used to 
  find the row. In that case the row should be complete and contain values for
  all columns. However, it can still be shorter than the table, i.e. the table 
  can contain extra columns not present in the row. It is also possible that 
  the table has fewer columns than the row being located. 
8524

8525 8526 8527 8528
  @returns Error code on failure, 0 on success. 
  
  @post In case of success @c m_table->record[0] contains the record found. 
  Also, the internal "cursor" of the table is positioned at the record found.
8529

8530 8531
  @note If the engine allows random access of the records, a combination of
  @c position() and @c rnd_pos() will be used. 
8532
 */
8533

8534
int Rows_log_event::find_row(const Relay_log_info *rli)
8535
{
8536
  DBUG_ENTER("Rows_log_event::find_row");
8537 8538

  DBUG_ASSERT(m_table && m_table->in_use != NULL);
8539

8540
  TABLE *table= m_table;
8541
  int error= 0;
8542

8543 8544 8545 8546 8547 8548 8549 8550 8551
  /*
    rpl_row_tabledefs.test specifies that
    if the extra field on the slave does not have a default value
    and this is okay with Delete or Update events.
    Todo: fix wl3228 hld that requires defauls for all types of events
  */
  
  prepare_record(table, m_width, FALSE);
  error= unpack_current_row(rli);
8552

8553 8554
#ifndef DBUG_OFF
  DBUG_PRINT("info",("looking for the following record"));
8555
  DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
8556
#endif
8557

8558 8559
  if ((table->file->ha_table_flags() & HA_PRIMARY_KEY_REQUIRED_FOR_POSITION) &&
      table->s->primary_key < MAX_KEY)
8560 8561 8562 8563 8564 8565
  {
    /*
      Use a more efficient method to fetch the record given by
      table->record[0] if the engine allows it.  We first compute a
      row reference using the position() member function (it will be
      stored in table->file->ref) and the use rnd_pos() to position
8566
      the "cursor" (i.e., record[0] in this case) at the correct row.
8567 8568 8569 8570 8571 8572 8573 8574 8575 8576 8577

      TODO: Add a check that the correct record has been fetched by
      comparing with the original record. Take into account that the
      record on the master and slave can be of different
      length. Something along these lines should work:

      ADD>>>  store_record(table,record[1]);
              int error= table->file->rnd_pos(table->record[0], table->file->ref);
      ADD>>>  DBUG_ASSERT(memcmp(table->record[1], table->record[0],
                                 table->s->reclength) == 0);

8578
    */
8579
    DBUG_PRINT("info",("locating record using primary key (position)"));
8580
    int error= table->file->rnd_pos_by_record(table->record[0]);
8581 8582 8583
    if (error)
    {
      DBUG_PRINT("info",("rnd_pos returns error %d",error));
8584 8585
      if (error == HA_ERR_RECORD_DELETED)
        error= HA_ERR_KEY_NOT_FOUND;
8586 8587
      table->file->print_error(error, MYF(0));
    }
8588
    DBUG_RETURN(error);
8589 8590
  }

8591
  // We can't use position() - try other methods.
8592 8593 8594 8595 8596
  
  /* 
    We need to retrieve all fields
    TODO: Move this out from this function to main loop 
   */
8597
  table->use_all_columns();
tomas@poseidon.ndb.mysql.com's avatar
tomas@poseidon.ndb.mysql.com committed
8598

8599 8600 8601 8602 8603 8604
  /*
    Save copy of the record in table->record[1]. It might be needed 
    later if linear search is used to find exact match.
   */ 
  store_record(table,record[1]);    

8605 8606
  if (table->s->keys > 0)
  {
8607 8608
    DBUG_PRINT("info",("locating record using primary key (index_read)"));

8609
    /* We have a key: search the table using the index */
8610
    if (!table->file->inited && (error= table->file->ha_index_init(0, FALSE)))
8611 8612 8613
    {
      DBUG_PRINT("info",("ha_index_init returns error %d",error));
      table->file->print_error(error, MYF(0));
8614
      goto err;
8615
    }
8616

8617 8618 8619 8620 8621 8622 8623 8624 8625
    /* Fill key data for the row */

    DBUG_ASSERT(m_key);
    key_copy(m_key, table->record[0], table->key_info, 0);

    /*
      Don't print debug messages when running valgrind since they can
      trigger false warnings.
     */
8626
#ifndef HAVE_purify
8627
    DBUG_DUMP("key data", m_key, table->key_info->key_length);
8628 8629
#endif

8630 8631 8632 8633 8634 8635
    /*
      We need to set the null bytes to ensure that the filler bit are
      all set when returning.  There are storage engines that just set
      the necessary bits on the bytes and don't set the filler bits
      correctly.
    */
8636 8637 8638 8639
    if (table->s->null_bytes > 0)
      table->record[0][table->s->null_bytes - 1]|=
        256U - (1U << table->s->last_null_bit_pos);

8640
    if ((error= table->file->index_read_map(table->record[0], m_key, 
8641
                                            HA_WHOLE_KEY,
8642
                                            HA_READ_KEY_EXACT)))
8643
    {
8644
      DBUG_PRINT("info",("no record matching the key found in the table"));
8645 8646
      if (error == HA_ERR_RECORD_DELETED)
        error= HA_ERR_KEY_NOT_FOUND;
8647
      table->file->print_error(error, MYF(0));
8648
      table->file->ha_index_end();
8649
      goto err;
8650 8651
    }

8652 8653 8654 8655 8656
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
#ifndef HAVE_purify
8657 8658
    DBUG_PRINT("info",("found first matching record")); 
    DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
8659
#endif
8660 8661 8662 8663 8664 8665 8666 8667 8668 8669 8670 8671 8672
    /*
      Below is a minor "optimization".  If the key (i.e., key number
      0) has the HA_NOSAME flag set, we know that we have found the
      correct record (since there can be no duplicates); otherwise, we
      have to compare the record with the one found to see if it is
      the correct one.

      CAVEAT! This behaviour is essential for the replication of,
      e.g., the mysql.proc table since the correct record *shall* be
      found using the primary key *only*.  There shall be no
      comparison of non-PK columns to decide if the correct record is
      found.  I can see no scenario where it would be incorrect to
      chose the row to change only using a PK or an UNNI.
8673
    */
8674
    if (table->key_info->flags & HA_NOSAME)
8675 8676
    {
      table->file->ha_index_end();
8677
      goto ok;
8678
    }
8679

8680 8681
    /*
      In case key is not unique, we still have to iterate over records found
8682 8683
      and find the one which is identical to the row given. A copy of the 
      record we are looking for is stored in record[1].
8684 8685 8686
     */ 
    DBUG_PRINT("info",("non-unique index, scanning it to find matching record")); 

8687
    while (record_compare(table))
8688
    {
8689 8690 8691 8692 8693
      /*
        We need to set the null bytes to ensure that the filler bit
        are all set when returning.  There are storage engines that
        just set the necessary bits on the bytes and don't set the
        filler bits correctly.
8694 8695 8696

        TODO[record format ndb]: Remove this code once NDB returns the
        correct record format.
8697
      */
8698 8699
      if (table->s->null_bytes > 0)
      {
8700
        table->record[0][table->s->null_bytes - 1]|=
8701 8702 8703
          256U - (1U << table->s->last_null_bit_pos);
      }

8704
      while ((error= table->file->index_next(table->record[0])))
8705
      {
8706 8707 8708
        /* We just skip records that has already been deleted */
        if (error == HA_ERR_RECORD_DELETED)
          continue;
8709 8710
        DBUG_PRINT("info",("no record matching the given row found"));
        table->file->print_error(error, MYF(0));
8711
        table->file->ha_index_end();
8712
        goto err;
8713 8714
      }
    }
8715 8716 8717 8718 8719

    /*
      Have to restart the scan to be able to fetch the next row.
    */
    table->file->ha_index_end();
8720 8721 8722
  }
  else
  {
8723 8724
    DBUG_PRINT("info",("locating record using table scan (rnd_next)"));

8725
    int restart_count= 0; // Number of times scanning has restarted from top
8726 8727 8728

    /* We don't have a key: search the table using rnd_next() */
    if ((error= table->file->ha_rnd_init(1)))
8729 8730 8731 8732
    {
      DBUG_PRINT("info",("error initializing table scan"
                         " (ha_rnd_init returns %d)",error));
      table->file->print_error(error, MYF(0));
8733
      goto err;
8734
    }
8735 8736

    /* Continue until we find the right record or have made a full loop */
8737 8738
    do
    {
8739
  restart_rnd_next:
8740
      error= table->file->rnd_next(table->record[0]);
8741

8742
      DBUG_PRINT("info", ("error: %s", HA_ERR(error)));
8743
      switch (error) {
8744

8745
      case 0:
8746
        break;
8747

8748 8749 8750 8751 8752 8753 8754
      /*
        If the record was deleted, we pick the next one without doing
        any comparisons.
      */
      case HA_ERR_RECORD_DELETED:
        goto restart_rnd_next;

8755
      case HA_ERR_END_OF_FILE:
8756 8757 8758
        if (++restart_count < 2)
          table->file->ha_rnd_init(1);
        break;
8759 8760

      default:
8761 8762 8763
        DBUG_PRINT("info", ("Failed to get next record"
                            " (rnd_next returns %d)",error));
        table->file->print_error(error, MYF(0));
8764
        table->file->ha_rnd_end();
8765
        goto err;
8766 8767
      }
    }
8768
    while (restart_count < 2 && record_compare(table));
8769 8770 8771 8772 8773
    
    /* 
      Note: above record_compare will take into accout all record fields 
      which might be incorrect in case a partial row was given in the event
     */
8774

8775 8776 8777
    /*
      Have to restart the scan to be able to fetch the next row.
    */
8778 8779
    if (restart_count == 2)
      DBUG_PRINT("info", ("Record not found"));
8780 8781
    else
      DBUG_DUMP("record found", table->record[0], table->s->reclength);
8782 8783
    table->file->ha_rnd_end();

8784
    DBUG_ASSERT(error == HA_ERR_END_OF_FILE || error == 0);
8785
    goto err;
8786
  }
8787 8788
ok:
  table->default_column_bitmaps();
8789
  DBUG_RETURN(0);
8790 8791 8792 8793

err:
  table->default_column_bitmaps();
  DBUG_RETURN(error);
8794
}
8795

8796 8797 8798 8799 8800 8801 8802 8803 8804 8805 8806 8807 8808 8809 8810 8811 8812 8813 8814 8815 8816 8817 8818 8819 8820 8821 8822 8823 8824
#endif

/*
  Constructor used to build an event for writing to the binary log.
 */

#ifndef MYSQL_CLIENT
Delete_rows_log_event::Delete_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
                                             ulong tid, MY_BITMAP const *cols,
                                             bool is_transactional)
  : Rows_log_event(thd_arg, tbl_arg, tid, cols, is_transactional)
{
}
#endif /* #if !defined(MYSQL_CLIENT) */

/*
  Constructor used by slave to read the event from the binary log.
 */
#ifdef HAVE_REPLICATION
Delete_rows_log_event::Delete_rows_log_event(const char *buf, uint event_len,
                                             const Format_description_log_event
                                             *description_event)
  : Rows_log_event(buf, event_len, DELETE_ROWS_EVENT, description_event)
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)

8825 8826 8827 8828 8829
int 
Delete_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
{
  if ((m_table->file->ha_table_flags() & HA_PRIMARY_KEY_REQUIRED_FOR_POSITION) &&
      m_table->s->primary_key < MAX_KEY)
8830 8831
  {
    /*
8832
      We don't need to allocate any memory for m_key since it is not used.
8833 8834 8835 8836
    */
    return 0;
  }

8837
  if (m_table->s->keys > 0)
8838
  {
8839 8840 8841 8842
    // Allocate buffer for key searches
    m_key= (uchar*)my_malloc(m_table->key_info->key_length, MYF(MY_WME));
    if (!m_key)
      return HA_ERR_OUT_OF_MEM;
8843
  }
8844
  return 0;
8845 8846
}

8847 8848 8849
int 
Delete_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const, 
                                               int error)
8850 8851
{
  /*error= ToDo:find out what this should really be, this triggers close_scan in nbd, returning error?*/
8852 8853
  m_table->file->ha_index_or_rnd_end();
  my_free(m_key, MYF(MY_ALLOW_ZERO_PTR));
8854
  m_key= NULL;
8855 8856 8857 8858

  return error;
}

8859
int Delete_rows_log_event::do_exec_row(const Relay_log_info *const rli)
8860
{
8861
  int error;
8862
  DBUG_ASSERT(m_table != NULL);
8863

8864
  if (!(error= find_row(rli))) 
8865 8866
  { 
    /*
8867
      Delete the record found, located in record[0]
8868
    */
8869
    error= m_table->file->ha_delete_row(m_table->record[0]);
8870
  }
8871 8872 8873 8874 8875 8876 8877 8878 8879
  return error;
}

#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Delete_rows_log_event::print(FILE *file,
                                  PRINT_EVENT_INFO* print_event_info)
{
8880
  Rows_log_event::print_helper(file, print_event_info, "Delete_rows");
8881 8882 8883 8884 8885 8886 8887 8888 8889 8890 8891 8892 8893
}
#endif


/**************************************************************************
	Update_rows_log_event member functions
**************************************************************************/

/*
  Constructor used to build an event for writing to the binary log.
 */
#if !defined(MYSQL_CLIENT)
Update_rows_log_event::Update_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
8894 8895 8896 8897 8898 8899 8900 8901 8902 8903 8904 8905
                                             ulong tid,
                                             MY_BITMAP const *cols_bi,
                                             MY_BITMAP const *cols_ai,
                                             bool is_transactional)
: Rows_log_event(thd_arg, tbl_arg, tid, cols_bi, is_transactional)
{
  init(cols_ai);
}

Update_rows_log_event::Update_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
                                             ulong tid,
                                             MY_BITMAP const *cols,
8906 8907 8908
                                             bool is_transactional)
: Rows_log_event(thd_arg, tbl_arg, tid, cols, is_transactional)
{
8909 8910 8911 8912 8913
  init(cols);
}

void Update_rows_log_event::init(MY_BITMAP const *cols)
{
8914
  /* if bitmap_init fails, caught in is_valid() */
8915 8916
  if (likely(!bitmap_init(&m_cols_ai,
                          m_width <= sizeof(m_bitbuf_ai)*8 ? m_bitbuf_ai : NULL,
8917
                          m_width,
8918 8919 8920 8921
                          false)))
  {
    /* Cols can be zero if this is a dummy binrows event */
    if (likely(cols != NULL))
8922
    {
8923
      memcpy(m_cols_ai.bitmap, cols->bitmap, no_bytes_in_map(cols));
8924 8925
      create_last_word_mask(&m_cols_ai);
    }
8926
  }
8927 8928 8929
}
#endif /* !defined(MYSQL_CLIENT) */

8930 8931 8932 8933 8934 8935 8936 8937 8938

Update_rows_log_event::~Update_rows_log_event()
{
  if (m_cols_ai.bitmap == m_bitbuf_ai) // no my_malloc happened
    m_cols_ai.bitmap= 0; // so no my_free in bitmap_free
  bitmap_free(&m_cols_ai); // To pair with bitmap_init().
}


8939 8940 8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953
/*
  Constructor used by slave to read the event from the binary log.
 */
#ifdef HAVE_REPLICATION
Update_rows_log_event::Update_rows_log_event(const char *buf, uint event_len,
                                             const
                                             Format_description_log_event
                                             *description_event)
  : Rows_log_event(buf, event_len, UPDATE_ROWS_EVENT, description_event)
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)

8954 8955 8956 8957
int 
Update_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
{
  if (m_table->s->keys > 0)
8958
  {
8959 8960 8961 8962
    // Allocate buffer for key searches
    m_key= (uchar*)my_malloc(m_table->key_info->key_length, MYF(MY_WME));
    if (!m_key)
      return HA_ERR_OUT_OF_MEM;
8963 8964
  }

8965
  m_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
8966

8967
  return 0;
8968 8969
}

8970 8971 8972
int 
Update_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const, 
                                               int error)
8973 8974
{
  /*error= ToDo:find out what this should really be, this triggers close_scan in nbd, returning error?*/
8975 8976
  m_table->file->ha_index_or_rnd_end();
  my_free(m_key, MYF(MY_ALLOW_ZERO_PTR)); // Free for multi_malloc
8977
  m_key= NULL;
8978 8979 8980 8981

  return error;
}

8982
int 
8983
Update_rows_log_event::do_exec_row(const Relay_log_info *const rli)
8984
{
8985
  DBUG_ASSERT(m_table != NULL);
8986

8987 8988
  int error= find_row(rli); 
  if (error)
8989 8990 8991 8992 8993 8994 8995
  {
    /*
      We need to read the second image in the event of error to be
      able to skip to the next pair of updates
    */
    m_curr_row= m_curr_row_end;
    unpack_current_row(rli);
8996
    return error;
8997
  }
8998

8999
  /*
9000
    This is the situation after locating BI:
9001

9002 9003 9004
    ===|=== before image ====|=== after image ===|===
       ^                     ^
       m_curr_row            m_curr_row_end
9005

9006 9007 9008
    BI found in the table is stored in record[0]. We copy it to record[1]
    and unpack AI to record[0].
   */
9009

9010
  store_record(m_table,record[1]);
9011

9012 9013
  m_curr_row= m_curr_row_end;
  error= unpack_current_row(rli); // this also updates m_curr_row_end
9014

9015
  /*
9016
    Now we have the right row to update.  The old row (the one we're
9017
    looking for) is in record[1] and the new row is in record[0].
9018
  */
9019 9020 9021 9022 9023 9024 9025 9026 9027 9028 9029
#ifndef HAVE_purify
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
  DBUG_PRINT("info",("Updating row in table"));
  DBUG_DUMP("old record", m_table->record[1], m_table->s->reclength);
  DBUG_DUMP("new values", m_table->record[0], m_table->s->reclength);
#endif

  error= m_table->file->ha_update_row(m_table->record[1], m_table->record[0]);
9030 9031
  if (error == HA_ERR_RECORD_IS_THE_SAME)
    error= 0;
9032 9033 9034

  return error;
}
9035

9036 9037 9038 9039 9040 9041
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Update_rows_log_event::print(FILE *file,
				  PRINT_EVENT_INFO* print_event_info)
{
9042
  Rows_log_event::print_helper(file, print_event_info, "Update_rows");
9043 9044 9045
}
#endif

9046 9047 9048 9049 9050 9051 9052 9053 9054 9055 9056 9057 9058 9059 9060 9061 9062

Incident_log_event::Incident_log_event(const char *buf, uint event_len,
                                       const Format_description_log_event *descr_event)
  : Log_event(buf, descr_event)
{
  DBUG_ENTER("Incident_log_event::Incident_log_event");
  uint8 const common_header_len=
    descr_event->common_header_len;
  uint8 const post_header_len=
    descr_event->post_header_len[INCIDENT_EVENT-1];

  DBUG_PRINT("info",("event_len: %u; common_header_len: %d; post_header_len: %d",
                     event_len, common_header_len, post_header_len));

  m_incident= static_cast<Incident>(uint2korr(buf + common_header_len));
  char const *ptr= buf + common_header_len + post_header_len;
  char const *const str_end= buf + event_len;
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  uint8 len= 0;                   // Assignment to keep compiler happy
  const char *str= NULL;          // Assignment to keep compiler happy
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  read_str(&ptr, str_end, &str, &len);
  m_message.str= const_cast<char*>(str);
  m_message.length= len;
  DBUG_PRINT("info", ("m_incident: %d", m_incident));
  DBUG_VOID_RETURN;
}


Incident_log_event::~Incident_log_event()
{
}


const char *
Incident_log_event::description() const
{
  static const char *const description[]= {
    "NOTHING",                                  // Not used
    "LOST_EVENTS"
  };

  DBUG_PRINT("info", ("m_incident: %d", m_incident));

  DBUG_ASSERT(0 <= m_incident);
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  DBUG_ASSERT((size_t) m_incident <= sizeof(description)/sizeof(*description));
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  return description[m_incident];
}


#ifndef MYSQL_CLIENT
void Incident_log_event::pack_info(Protocol *protocol)
{
  char buf[256];
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  size_t bytes;
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  if (m_message.length > 0)
    bytes= my_snprintf(buf, sizeof(buf), "#%d (%s)",
                       m_incident, description());
  else
    bytes= my_snprintf(buf, sizeof(buf), "#%d (%s): %s",
                       m_incident, description(), m_message.str);
  protocol->store(buf, bytes, &my_charset_bin);
}
#endif


#ifdef MYSQL_CLIENT
void
Incident_log_event::print(FILE *file,
                          PRINT_EVENT_INFO *print_event_info)
{
  if (print_event_info->short_form)
    return;

  Write_on_release_cache cache(&print_event_info->head_cache, file);
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n# Incident: %s", description());
}
#endif

#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
int
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Incident_log_event::do_apply_event(Relay_log_info const *rli)
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{
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  DBUG_ENTER("Incident_log_event::do_apply_event");
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  rli->report(ERROR_LEVEL, ER_SLAVE_INCIDENT,
              ER(ER_SLAVE_INCIDENT),
              description(),
              m_message.length > 0 ? m_message.str : "<none>");
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  DBUG_RETURN(1);
}
#endif

bool
Incident_log_event::write_data_header(IO_CACHE *file)
{
  DBUG_ENTER("Incident_log_event::write_data_header");
  DBUG_PRINT("enter", ("m_incident: %d", m_incident));
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  uchar buf[sizeof(int16)];
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  int2store(buf, (int16) m_incident);
  DBUG_RETURN(my_b_safe_write(file, buf, sizeof(buf)));
}

bool
Incident_log_event::write_data_body(IO_CACHE *file)
{
  DBUG_ENTER("Incident_log_event::write_data_body");
  DBUG_RETURN(write_str(file, m_message.str, m_message.length));
}
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#ifdef MYSQL_CLIENT
/**
  The default values for these variables should be values that are
  *incorrect*, i.e., values that cannot occur in an event.  This way,
  they will always be printed for the first event.
*/
st_print_event_info::st_print_event_info()
  :flags2_inited(0), sql_mode_inited(0),
   auto_increment_increment(0),auto_increment_offset(0), charset_inited(0),
   lc_time_names_number(~0),
   charset_database_number(ILLEGAL_CHARSET_INFO_NUMBER),
   thread_id(0), thread_id_printed(false),
   base64_output_mode(BASE64_OUTPUT_UNSPEC), printed_fd_event(FALSE)
{
  /*
    Currently we only use static PRINT_EVENT_INFO objects, so zeroed at
    program's startup, but these explicit bzero() is for the day someone
    creates dynamic instances.
  */
  bzero(db, sizeof(db));
  bzero(charset, sizeof(charset));
  bzero(time_zone_str, sizeof(time_zone_str));
  delimiter[0]= ';';
  delimiter[1]= 0;
  myf const flags = MYF(MY_WME | MY_NABP);
  open_cached_file(&head_cache, NULL, NULL, 0, flags);
  open_cached_file(&body_cache, NULL, NULL, 0, flags);
}
#endif