log_event.cc 215 KB
Newer Older
unknown's avatar
unknown committed
1
/* Copyright (C) 2000-2004 MySQL AB
2

unknown's avatar
unknown committed
3 4 5 6
   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
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
7

unknown's avatar
unknown committed
8 9 10 11
   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.
12

unknown's avatar
unknown committed
13 14 15 16 17 18
   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 */


#ifndef MYSQL_CLIENT
unknown's avatar
unknown committed
19

20
#ifdef USE_PRAGMA_IMPLEMENTATION
unknown's avatar
unknown committed
21 22
#pragma implementation				// gcc: Class implementation
#endif
23

24
#include "mysql_priv.h"
25
#include "slave.h"
unknown's avatar
unknown committed
26
#include "rpl_filter.h"
27
#include "rpl_utility.h"
28
#include <my_dir.h>
unknown's avatar
unknown committed
29
#endif /* MYSQL_CLIENT */
30 31
#include <base64.h>
#include <my_bitmap.h>
unknown's avatar
unknown committed
32

unknown's avatar
unknown committed
33
#define log_cs	&my_charset_latin1
34

unknown's avatar
unknown committed
35
/*
36
  pretty_print_str()
unknown's avatar
unknown committed
37
*/
38

39
#ifdef MYSQL_CLIENT
40
static void pretty_print_str(FILE* file, char* str, int len)
unknown's avatar
unknown committed
41
{
42
  char* end = str + len;
unknown's avatar
unknown committed
43
  fputc('\'', file);
44 45
  while (str < end)
  {
unknown's avatar
unknown committed
46
    char c;
47 48 49 50 51 52 53 54 55 56 57 58
    switch ((c=*str++)) {
    case '\n': fprintf(file, "\\n"); break;
    case '\r': fprintf(file, "\\r"); break;
    case '\\': fprintf(file, "\\\\"); break;
    case '\b': fprintf(file, "\\b"); break;
    case '\t': fprintf(file, "\\t"); break;
    case '\'': fprintf(file, "\\'"); break;
    case 0   : fprintf(file, "\\0"); break;
    default:
      fputc(c, file);
      break;
    }
59 60
  }
  fputc('\'', file);
unknown's avatar
unknown committed
61
}
unknown's avatar
unknown committed
62
#endif /* MYSQL_CLIENT */
unknown's avatar
unknown committed
63

unknown's avatar
unknown committed
64

unknown's avatar
unknown committed
65
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
unknown's avatar
unknown committed
66

67 68 69 70 71 72 73 74
static void clear_all_errors(THD *thd, struct st_relay_log_info *rli)
{
  thd->query_error = 0;
  thd->clear_error();
  *rli->last_slave_error = 0;
  rli->last_slave_errno = 0;
}

unknown's avatar
unknown committed
75

unknown's avatar
unknown committed
76
/*
unknown's avatar
unknown committed
77
  Ignore error code specified on command line
unknown's avatar
unknown committed
78
*/
79

80 81
inline int ignored_error_code(int err_code)
{
unknown's avatar
unknown committed
82 83 84 85 86 87 88 89 90 91 92 93 94 95
#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
unknown's avatar
unknown committed
96 97
  return ((err_code == ER_SLAVE_IGNORED_TABLE) ||
          (use_slave_mask && bitmap_is_set(&slave_error_mask, err_code)));
98
}
unknown's avatar
SCRUM  
unknown committed
99
#endif
100

unknown's avatar
unknown committed
101

unknown's avatar
unknown committed
102
/*
103
  pretty_print_str()
unknown's avatar
unknown committed
104
*/
unknown's avatar
unknown committed
105

unknown's avatar
unknown committed
106
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
unknown's avatar
unknown committed
107
static char *pretty_print_str(char *packet, char *str, int len)
unknown's avatar
unknown committed
108
{
unknown's avatar
unknown committed
109 110
  char *end= str + len;
  char *pos= packet;
111
  *pos++= '\'';
112 113 114
  while (str < end)
  {
    char c;
115
    switch ((c=*str++)) {
unknown's avatar
unknown committed
116 117 118 119 120 121 122
    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;
123
    default:
unknown's avatar
unknown committed
124
      *pos++= c;
125 126
      break;
    }
unknown's avatar
unknown committed
127
  }
128 129
  *pos++= '\'';
  return pos;
unknown's avatar
unknown committed
130
}
unknown's avatar
unknown committed
131
#endif /* !MYSQL_CLIENT */
132

unknown's avatar
unknown committed
133

unknown's avatar
unknown committed
134
/*
unknown's avatar
unknown committed
135 136 137 138 139 140 141 142 143 144 145
  Creates a temporary name for load data infile:

  SYNOPSIS
    slave_load_file_stem()
    buf		      Store new filename here
    file_id	      File_id (part of file name)
    event_server_id   Event_id (part of file name)
    ext		      Extension for file name

  RETURN
    Pointer to start of extension
unknown's avatar
unknown committed
146
*/
unknown's avatar
unknown committed
147

unknown's avatar
SCRUM  
unknown committed
148
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
unknown's avatar
unknown committed
149 150
static char *slave_load_file_stem(char *buf, uint file_id,
                                  int event_server_id, const char *ext)
151
{
unknown's avatar
unknown committed
152
  char *res;
153 154 155
  fn_format(buf,"SQL_LOAD-",slave_load_tmpdir, "", MY_UNPACK_FILENAME);
  to_unix_path(buf);

156 157 158 159 160
  buf = strend(buf);
  buf = int10_to_str(::server_id, buf, 10);
  *buf++ = '-';
  buf = int10_to_str(event_server_id, buf, 10);
  *buf++ = '-';
unknown's avatar
unknown committed
161 162 163
  res= int10_to_str(file_id, buf, 10);
  strmov(res, ext);                             // Add extension last
  return res;                                   // Pointer to extension
164
}
unknown's avatar
SCRUM  
unknown committed
165
#endif
166

unknown's avatar
unknown committed
167

unknown's avatar
unknown committed
168
/*
169 170
  Delete all temporary files used for SQL_LOAD.

unknown's avatar
unknown committed
171 172
  SYNOPSIS
    cleanup_load_tmpdir()
unknown's avatar
unknown committed
173
*/
174

unknown's avatar
SCRUM  
unknown committed
175
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
176 177 178 179 180
static void cleanup_load_tmpdir()
{
  MY_DIR *dirp;
  FILEINFO *file;
  uint i;
unknown's avatar
unknown committed
181
  char fname[FN_REFLEN], prefbuf[31], *p;
unknown's avatar
unknown committed
182

183 184 185
  if (!(dirp=my_dir(slave_load_tmpdir,MYF(MY_WME))))
    return;

186 187 188 189 190 191 192 193
  /* 
     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.
  */
194
  p= strmake(prefbuf, STRING_WITH_LEN("SQL_LOAD-"));
195 196 197 198
  p= int10_to_str(::server_id, p, 10);
  *(p++)= '-';
  *p= 0;

199 200 201
  for (i=0 ; i < (uint)dirp->number_off_files; i++)
  {
    file=dirp->dir_entry+i;
202
    if (is_prefix(file->name, prefbuf))
unknown's avatar
unknown committed
203 204 205 206
    {
      fn_format(fname,file->name,slave_load_tmpdir,"",MY_UNPACK_FILENAME);
      my_delete(fname, MYF(0));
    }
207 208 209 210
  }

  my_dirend(dirp);
}
unknown's avatar
SCRUM  
unknown committed
211
#endif
212 213


unknown's avatar
unknown committed
214
/*
215
  write_str()
unknown's avatar
unknown committed
216
*/
217

218
static bool write_str(IO_CACHE *file, char *str, uint length)
219
{
220 221 222 223
  byte tmp[1];
  tmp[0]= (byte) length;
  return (my_b_safe_write(file, tmp, sizeof(tmp)) ||
	  my_b_safe_write(file, (byte*) str, length));
224 225 226
}


unknown's avatar
unknown committed
227
/*
228
  read_str()
unknown's avatar
unknown committed
229
*/
230

231 232
static inline int read_str(char **buf, char *buf_end, char **str,
			   uint8 *len)
233
{
234
  if (*buf + ((uint) (uchar) **buf) >= buf_end)
235
    return 1;
236 237 238
  *len= (uint8) **buf;
  *str= (*buf)+1;
  (*buf)+= (uint) *len+1;
239 240 241
  return 0;
}

242

243 244 245
/*
  Transforms a string into "" or its expression in 0x... form.
*/
unknown's avatar
unknown committed
246

247
char *str_to_hex(char *to, const char *from, uint len)
248 249 250
{
  if (len)
  {
unknown's avatar
unknown committed
251 252 253
    *to++= '0';
    *to++= 'x';
    to= octet2hex(to, from, len);
254 255
  }
  else
unknown's avatar
unknown committed
256 257
    to= strmov(to, "\"\"");
  return to;                               // pointer to end 0 of 'to'
258 259
}

260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290
/*
  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.
 */
#ifndef MYSQL_CLIENT
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++= '\'';
    ptr+= escape_string_for_mysql(from->charset(), ptr, 0,
                                  from->ptr(), from->length());
    *ptr++='\'';
  }
  to->length(orig_len + ptr - beg);
  return 0;
}
#endif

291 292 293 294 295
/*
  Prints a "session_var=value" string. Used by mysqlbinlog to print some SET
  commands just before it prints a query.
*/

296
#ifdef MYSQL_CLIENT
297 298 299 300 301 302 303
static void print_set_option(FILE* file, uint32 bits_changed, uint32 option,
                             uint32 flags, const char* name, bool* need_comma) 
{
  if (bits_changed & option)
  {
    if (*need_comma)
      fprintf(file,", ");
304
    fprintf(file,"%s=%d", name, test(flags & option));
305 306 307
    *need_comma= 1;
  }
}
308
#endif
309

unknown's avatar
unknown committed
310
/**************************************************************************
311
	Log_event methods (= the parent class of all events)
unknown's avatar
unknown committed
312
**************************************************************************/
313

unknown's avatar
unknown committed
314
/*
315
  Log_event::get_type_str()
unknown's avatar
unknown committed
316
*/
317

unknown's avatar
unknown committed
318 319
const char* Log_event::get_type_str()
{
320
  switch(get_type_code()) {
321
  case START_EVENT_V3:  return "Start_v3";
unknown's avatar
unknown committed
322 323 324 325 326
  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";
327
  case NEW_LOAD_EVENT:   return "New_load";
unknown's avatar
unknown committed
328
  case SLAVE_EVENT:  return "Slave";
329 330 331 332
  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";
333
  case RAND_EVENT: return "RAND";
334
  case XID_EVENT: return "Xid";
unknown's avatar
unknown committed
335
  case USER_VAR_EVENT: return "User var";
336
  case FORMAT_DESCRIPTION_EVENT: return "Format_desc";
337 338 339 340
  case TABLE_MAP_EVENT: return "Table_map";
  case WRITE_ROWS_EVENT: return "Write_rows";
  case UPDATE_ROWS_EVENT: return "Update_rows";
  case DELETE_ROWS_EVENT: return "Delete_rows";
unknown's avatar
unknown committed
341 342
  case BEGIN_LOAD_QUERY_EVENT: return "Begin_load_query";
  case EXECUTE_LOAD_QUERY_EVENT: return "Execute_load_query";
343
  default: return "Unknown";				/* impossible */
unknown's avatar
unknown committed
344 345 346
  }
}

347

unknown's avatar
unknown committed
348
/*
349
  Log_event::Log_event()
unknown's avatar
unknown committed
350
*/
351

unknown's avatar
unknown committed
352
#ifndef MYSQL_CLIENT
353
Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans)
354
  :log_pos(0), temp_buf(0), exec_time(0), flags(flags_arg), thd(thd_arg)
355
{
unknown's avatar
unknown committed
356 357
  server_id=	thd->server_id;
  when=		thd->start_time;
358
  cache_stmt=	using_trans;
359 360 361
}


unknown's avatar
unknown committed
362
/*
363 364 365 366
  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).
unknown's avatar
unknown committed
367 368
*/

369
Log_event::Log_event()
370
  :temp_buf(0), exec_time(0), flags(0), cache_stmt(0),
371 372
   thd(0)
{
unknown's avatar
unknown committed
373 374 375
  server_id=	::server_id;
  when=		time(NULL);
  log_pos=	0;
376
}
unknown's avatar
unknown committed
377
#endif /* !MYSQL_CLIENT */
378 379


unknown's avatar
unknown committed
380
/*
381
  Log_event::Log_event()
382
*/
383

384
Log_event::Log_event(const char* buf,
unknown's avatar
unknown committed
385
                     const Format_description_log_event* description_event)
386
  :temp_buf(0), cache_stmt(0)
387
{
388 389
#ifndef MYSQL_CLIENT
  thd = 0;
unknown's avatar
unknown committed
390
#endif
391 392
  when = uint4korr(buf);
  server_id = uint4korr(buf + SERVER_ID_OFFSET);
393
  if (description_event->binlog_version==1)
394
  {
395 396 397
    log_pos= 0;
    flags= 0;
    return;
398
  }
399 400 401
  /* 4.0 or newer */
  log_pos= uint4korr(buf + LOG_POS_OFFSET);
  /*
402 403 404 405 406 407 408 409
    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).
410 411 412
  */
  if (description_event->binlog_version==3 &&
      buf[EVENT_TYPE_OFFSET]<FORMAT_DESCRIPTION_EVENT && log_pos)
413
  {
414 415 416
      /*
        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
417 418
        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
419
        not have its log_pos (which is 0) changed or it will modify
420 421 422 423
        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).
424 425
      */
    log_pos+= uint4korr(buf + EVENT_LEN_OFFSET);
426
  }
427 428 429 430 431 432 433
  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))
  {
    /*
434 435
      These events always have a header which stops here (i.e. their
      header is FROZEN).
436 437
    */
    /*
438 439 440 441 442 443 444
      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.
445 446 447 448
    */
    return;
  }
  /* otherwise, go on with reading the header from buf (nothing now) */
449 450 451
}

#ifndef MYSQL_CLIENT
unknown's avatar
SCRUM  
unknown committed
452
#ifdef HAVE_REPLICATION
453

unknown's avatar
unknown committed
454
/*
455
  Log_event::exec_event()
unknown's avatar
unknown committed
456
*/
457

458
int Log_event::exec_event(struct st_relay_log_info* rli)
459
{
unknown's avatar
unknown committed
460 461
  DBUG_ENTER("Log_event::exec_event");

462 463 464 465 466 467 468 469 470 471 472 473
  /*
    rli is null when (as far as I (Guilhem) know)
    the caller is
    Load_log_event::exec_event *and* that one is called from
    Execute_load_log_event::exec_event. 
    In this case, we don't do anything here ;
    Execute_load_log_event::exec_event will call Log_event::exec_event
    again later with the proper rli.
    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.
  */
474
  if (rli)
475
  {
476
    /*
477 478 479 480
      If in a transaction, and if the slave supports transactions, just
      inc_event_relay_log_pos(). We only have to check for OPTION_BEGIN
      (not OPTION_NOT_AUTOCOMMIT) as transactions are logged with
      BEGIN/COMMIT, not with SET AUTOCOMMIT= .
481

482
      CAUTION: opt_using_transactions means
483
      innodb || bdb ; suppose the master supports InnoDB and BDB,
484
      but the slave supports only BDB, problems
485
      will arise:
486 487
      - suppose an InnoDB table is created on the master,
      - then it will be MyISAM on the slave
488 489 490 491 492 493 494 495 496 497 498 499
      - but as opt_using_transactions is true, the slave will believe he
      is transactional with the MyISAM table. And problems will come
      when one does START SLAVE; STOP SLAVE; START SLAVE; (the slave
      will resume at BEGIN whereas there has not been any rollback).
      This is the problem of using opt_using_transactions instead of a
      finer "does the slave support
      _the_transactional_handler_used_on_the_master_".

      More generally, we'll have problems when a query mixes a
      transactional handler and MyISAM and STOP SLAVE is issued in the
      middle of the "transaction". START SLAVE will resume at BEGIN
      while the MyISAM table has already been updated.
500 501
    */
    if ((thd->options & OPTION_BEGIN) && opt_using_transactions)
502
      rli->inc_event_relay_log_pos();
503 504
    else
    {
505
      rli->inc_group_relay_log_pos(log_pos);
506
      flush_relay_log_info(rli);
507
      /* 
508 509
         Note that Rotate_log_event::exec_event() does not call this
         function, so there is no chance that a fake rotate event resets
510
         last_master_timestamp.
511 512 513
         Note that we update without mutex (probably ok - except in some very
         rare cases, only consequence is that value may take some time to
         display in Seconds_Behind_Master - not critical).
514 515
      */
      rli->last_master_timestamp= when;
516
    }
517
  }
unknown's avatar
unknown committed
518
  DBUG_RETURN(0);
519
}
unknown's avatar
unknown committed
520

521

unknown's avatar
unknown committed
522
/*
523
  Log_event::pack_info()
unknown's avatar
unknown committed
524
*/
525

526
void Log_event::pack_info(Protocol *protocol)
unknown's avatar
unknown committed
527
{
528
  protocol->store("", &my_charset_bin);
unknown's avatar
unknown committed
529 530 531
}


unknown's avatar
unknown committed
532
/*
533
  Log_event::net_send()
unknown's avatar
unknown committed
534

535
  Only called by SHOW BINLOG EVENTS
unknown's avatar
unknown committed
536
*/
unknown's avatar
SCRUM  
unknown committed
537

538
int Log_event::net_send(Protocol *protocol, const char* log_name, my_off_t pos)
539
{
unknown's avatar
unknown committed
540 541
  const char *p= strrchr(log_name, FN_LIBCHAR);
  const char *event_type;
542 543 544
  if (p)
    log_name = p + 1;
  
545
  protocol->prepare_for_resend();
546
  protocol->store(log_name, &my_charset_bin);
547
  protocol->store((ulonglong) pos);
548
  event_type = get_type_str();
549
  protocol->store(event_type, strlen(event_type), &my_charset_bin);
550 551 552 553
  protocol->store((uint32) server_id);
  protocol->store((ulonglong) log_pos);
  pack_info(protocol);
  return protocol->write();
554
}
unknown's avatar
SCRUM  
unknown committed
555 556 557
#endif /* HAVE_REPLICATION */


unknown's avatar
unknown committed
558
/*
unknown's avatar
SCRUM  
unknown committed
559
  Log_event::init_show_field_list()
unknown's avatar
unknown committed
560
*/
unknown's avatar
SCRUM  
unknown committed
561 562 563 564 565 566 567 568 569

void Log_event::init_show_field_list(List<Item>* field_list)
{
  field_list->push_back(new Item_empty_string("Log_name", 20));
  field_list->push_back(new Item_return_int("Pos", 11,
					    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));
570
  field_list->push_back(new Item_return_int("End_log_pos", 11,
unknown's avatar
SCRUM  
unknown committed
571 572 573 574
					    MYSQL_TYPE_LONGLONG));
  field_list->push_back(new Item_empty_string("Info", 20));
}

575

unknown's avatar
unknown committed
576
/*
577
  Log_event::write()
unknown's avatar
unknown committed
578
*/
579

580
bool Log_event::write_header(IO_CACHE* file, ulong event_data_length)
unknown's avatar
unknown committed
581
{
582 583
  byte header[LOG_EVENT_HEADER_LEN];
  DBUG_ENTER("Log_event::write_header");
unknown's avatar
unknown committed
584

585 586
  /* Store number of bytes that will be written by this event */
  data_written= event_data_length + sizeof(header);
587

588 589 590 591
  /*
    log_pos != 0 if this is relay-log event. In this case we should not
    change the position
  */
592

593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647
  if (is_artificial_event())
  {
    /*
      We should not do any cleanup on slave when reading this. We
      mark this by setting log_pos to 0.  Start_log_event_v3() will
      detect this on reading and set artificial_event=1 for the event.
    */
    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;
  }

  /*
    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).
  */

  int4store(header, (ulong) when);              // timestamp
  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);
unknown's avatar
unknown committed
648 649 650
}


unknown's avatar
unknown committed
651
/*
652
  Log_event::read_log_event()
653 654 655 656

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

unknown's avatar
unknown committed
657
*/
658

659
int Log_event::read_log_event(IO_CACHE* file, String* packet,
660
			      pthread_mutex_t* log_lock)
unknown's avatar
unknown committed
661 662
{
  ulong data_len;
663
  int result=0;
664
  char buf[LOG_EVENT_MINIMAL_HEADER_LEN];
665
  DBUG_ENTER("read_log_event");
666

667
  if (log_lock)
668
    pthread_mutex_lock(log_lock);
669 670
  if (my_b_read(file, (byte*) buf, sizeof(buf)))
  {
671 672 673 674 675
    /*
      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.
    */
676
    DBUG_PRINT("error",("file->error: %d", file->error));
677 678 679
    if (!file->error)
      result= LOG_READ_EOF;
    else
680
      result= (file->error > 0 ? LOG_READ_TRUNC : LOG_READ_IO);
681
    goto end;
682
  }
683
  data_len= uint4korr(buf + EVENT_LEN_OFFSET);
684
  if (data_len < LOG_EVENT_MINIMAL_HEADER_LEN ||
unknown's avatar
unknown committed
685
      data_len > current_thd->variables.max_allowed_packet)
686
  {
687
    DBUG_PRINT("error",("data_len: %ld", data_len));
688
    result= ((data_len < LOG_EVENT_MINIMAL_HEADER_LEN) ? LOG_READ_BOGUS :
689 690
	     LOG_READ_TOO_LARGE);
    goto end;
691
  }
unknown's avatar
unknown committed
692
  packet->append(buf, sizeof(buf));
693
  data_len-= LOG_EVENT_MINIMAL_HEADER_LEN;
694 695 696
  if (data_len)
  {
    if (packet->append(file, data_len))
697
    {
698
      /*
699 700
	Here if we hit EOF it's really an error: as data_len is >=0
        there's supposed to be more bytes available. 
701
	EOF means we are reading the event partially, which should
702
	never happen: either we read badly or the binlog is truncated.
703 704 705
      */
      result= file->error >= 0 ? LOG_READ_TRUNC: LOG_READ_IO;
      /* Implicit goto end; */
706
    }
707
  }
708 709 710 711

end:
  if (log_lock)
    pthread_mutex_unlock(log_lock);
712
  DBUG_RETURN(result);
unknown's avatar
unknown committed
713
}
unknown's avatar
unknown committed
714
#endif /* !MYSQL_CLIENT */
unknown's avatar
unknown committed
715

unknown's avatar
unknown committed
716
#ifndef MYSQL_CLIENT
unknown's avatar
unknown committed
717 718
#define UNLOCK_MUTEX if (log_lock) pthread_mutex_unlock(log_lock);
#define LOCK_MUTEX if (log_lock) pthread_mutex_lock(log_lock);
719
#else
720
#define UNLOCK_MUTEX
721 722 723
#define LOCK_MUTEX
#endif

unknown's avatar
unknown committed
724
/*
725 726
  Log_event::read_log_event()

unknown's avatar
unknown committed
727
  NOTE:
728
    Allocates memory;  The caller is responsible for clean-up.
unknown's avatar
unknown committed
729
*/
730

unknown's avatar
unknown committed
731
#ifndef MYSQL_CLIENT
732 733
Log_event* Log_event::read_log_event(IO_CACHE* file,
				     pthread_mutex_t* log_lock,
734
                                     const Format_description_log_event *description_event)
unknown's avatar
unknown committed
735
#else
736 737
Log_event* Log_event::read_log_event(IO_CACHE* file,
                                     const Format_description_log_event *description_event)
738
#endif
unknown's avatar
unknown committed
739
{
740
  DBUG_ENTER("Log_event::read_log_event(IO_CACHE *, Format_description_log_event *");
741
  DBUG_ASSERT(description_event != 0);
742 743 744 745 746
  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
747 748
    of 13 bytes, whereas LOG_EVENT_MINIMAL_HEADER_LEN is 19 bytes (it's
    "minimal" over the set {MySQL >=4.0}).
749 750 751
  */
  uint header_size= min(description_event->common_header_len,
                        LOG_EVENT_MINIMAL_HEADER_LEN);
752

753
  LOCK_MUTEX;
754
  DBUG_PRINT("info", ("my_b_tell=%lu", my_b_tell(file)));
755
  if (my_b_read(file, (byte *) head, header_size))
756
  {
757 758
    DBUG_PRINT("info", ("Log_event::read_log_event(IO_CACHE*,Format_desc*) \
failed my_b_read"));
unknown's avatar
unknown committed
759
    UNLOCK_MUTEX;
760
    /*
761 762 763
      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.
764
    */
765
    DBUG_RETURN(0);
766
  }
767
  uint data_len = uint4korr(head + EVENT_LEN_OFFSET);
768 769 770
  char *buf= 0;
  const char *error= 0;
  Log_event *res=  0;
771 772
#ifndef max_allowed_packet
  THD *thd=current_thd;
unknown's avatar
unknown committed
773
  uint max_allowed_packet= thd ? thd->variables.max_allowed_packet : ~(ulong)0;
774
#endif
unknown's avatar
unknown committed
775

776
  if (data_len > max_allowed_packet)
unknown's avatar
unknown committed
777
  {
778 779
    error = "Event too big";
    goto err;
unknown's avatar
unknown committed
780 781
  }

782
  if (data_len < header_size)
unknown's avatar
unknown committed
783
  {
784 785
    error = "Event too small";
    goto err;
unknown's avatar
unknown committed
786
  }
787 788 789

  // some events use the extra byte to null-terminate strings
  if (!(buf = my_malloc(data_len+1, MYF(MY_WME))))
790 791 792
  {
    error = "Out of memory";
    goto err;
unknown's avatar
unknown committed
793
  }
794
  buf[data_len] = 0;
795
  memcpy(buf, head, header_size);
796
  if (my_b_read(file, (byte*) buf + header_size, data_len - header_size))
797 798 799 800
  {
    error = "read error";
    goto err;
  }
801
  if ((res= read_log_event(buf, data_len, &error, description_event)))
802
    res->register_temp_buf(buf);
803

804
err:
unknown's avatar
unknown committed
805
  UNLOCK_MUTEX;
806
  if (!res)
807
  {
808
    DBUG_ASSERT(error != 0);
809 810
    sql_print_error("Error in Log_event::read_log_event(): "
                    "'%s', data_len: %d, event_type: %d",
811
		    error,data_len,head[EVENT_TYPE_OFFSET]);
812
    my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
813 814 815 816 817 818 819 820 821
    /*
      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;
822
  }
823
  DBUG_RETURN(res);
unknown's avatar
unknown committed
824 825
}

826

unknown's avatar
unknown committed
827
/*
828
  Log_event::read_log_event()
829 830
  Binlog format tolerance is in (buf, event_len, description_event)
  constructors.
unknown's avatar
unknown committed
831
*/
832

833 834 835
Log_event* Log_event::read_log_event(const char* buf, uint event_len,
				     const char **error,
                                     const Format_description_log_event *description_event)
unknown's avatar
unknown committed
836
{
837 838
  Log_event* ev;
  DBUG_ENTER("Log_event::read_log_event(char*,...)");
839
  DBUG_ASSERT(description_event != 0);
840
  DBUG_PRINT("info", ("binlog_version: %d", description_event->binlog_version));
841
  if (event_len < EVENT_LEN_OFFSET ||
842 843 844
      (uint) event_len != uint4korr(buf+EVENT_LEN_OFFSET))
  {
    *error="Sanity check failed";		// Needed to free buffer
unknown's avatar
unknown committed
845
    DBUG_RETURN(NULL); // general sanity check - will fail on a partial read
846
  }
847

848 849 850
  /* To check the integrity of the Log_event_type enumeration */
  DBUG_ASSERT(buf[EVENT_TYPE_OFFSET] < ENUM_END_EVENT);

851
  switch(buf[EVENT_TYPE_OFFSET]) {
unknown's avatar
unknown committed
852
  case QUERY_EVENT:
unknown's avatar
unknown committed
853
    ev  = new Query_log_event(buf, event_len, description_event, QUERY_EVENT);
854
    break;
unknown's avatar
unknown committed
855
  case LOAD_EVENT:
unknown's avatar
unknown committed
856
    ev = new Load_log_event(buf, event_len, description_event);
unknown's avatar
unknown committed
857
    break;
858
  case NEW_LOAD_EVENT:
859
    ev = new Load_log_event(buf, event_len, description_event);
860
    break;
unknown's avatar
unknown committed
861
  case ROTATE_EVENT:
862
    ev = new Rotate_log_event(buf, event_len, description_event);
863
    break;
unknown's avatar
SCRUM  
unknown committed
864
#ifdef HAVE_REPLICATION
865
  case SLAVE_EVENT: /* can never happen (unused event) */
866 867
    ev = new Slave_log_event(buf, event_len);
    break;
unknown's avatar
SCRUM  
unknown committed
868
#endif /* HAVE_REPLICATION */
869
  case CREATE_FILE_EVENT:
870
    ev = new Create_file_log_event(buf, event_len, description_event);
871 872
    break;
  case APPEND_BLOCK_EVENT:
873
    ev = new Append_block_log_event(buf, event_len, description_event);
874 875
    break;
  case DELETE_FILE_EVENT:
876
    ev = new Delete_file_log_event(buf, event_len, description_event);
877 878
    break;
  case EXEC_LOAD_EVENT:
879
    ev = new Execute_load_log_event(buf, event_len, description_event);
880
    break;
881 882
  case START_EVENT_V3: /* this is sent only by MySQL <=4.x */
    ev = new Start_log_event_v3(buf, description_event);
883 884
    break;
  case STOP_EVENT:
885
    ev = new Stop_log_event(buf, description_event);
886 887
    break;
  case INTVAR_EVENT:
888
    ev = new Intvar_log_event(buf, description_event);
889
    break;
890 891 892
  case XID_EVENT:
    ev = new Xid_log_event(buf, description_event);
    break;
unknown's avatar
unknown committed
893
  case RAND_EVENT:
894
    ev = new Rand_log_event(buf, description_event);
unknown's avatar
unknown committed
895
    break;
unknown's avatar
unknown committed
896
  case USER_VAR_EVENT:
897 898 899 900
    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); 
unknown's avatar
unknown committed
901
    break;
902 903 904 905 906 907 908 909 910 911 912 913 914 915
#if defined(HAVE_REPLICATION) && defined(HAVE_ROW_BASED_REPLICATION)
  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;
#endif
unknown's avatar
unknown committed
916 917 918 919 920 921
  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;
922
  default:
923 924
    DBUG_PRINT("error",("Unknown evernt code: %d",(int) buf[EVENT_TYPE_OFFSET]));
    ev= NULL;
925
    break;
unknown's avatar
unknown committed
926
  }
927

928
  /*
929 930 931 932 933 934 935
    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'.
936
  */
937
  if (!ev || !ev->is_valid())
938
  {
939 940
    DBUG_PRINT("error",("Found invalid event in binary log"));

941
    delete ev;
942
#ifdef MYSQL_CLIENT
943
    if (!force_opt) /* then mysqlbinlog dies */
944 945
    {
      *error= "Found invalid event in binary log";
unknown's avatar
unknown committed
946
      DBUG_RETURN(0);
947
    }
948
    ev= new Unknown_log_event(buf, description_event);
949 950
#else
    *error= "Found invalid event in binary log";
unknown's avatar
unknown committed
951
    DBUG_RETURN(0);
952
#endif
953
  }
unknown's avatar
unknown committed
954
  DBUG_RETURN(ev);  
unknown's avatar
unknown committed
955 956
}

957
#ifdef MYSQL_CLIENT
958

unknown's avatar
unknown committed
959
/*
960
  Log_event::print_header()
unknown's avatar
unknown committed
961
*/
962

unknown's avatar
unknown committed
963
void Log_event::print_header(FILE* file, PRINT_EVENT_INFO* print_event_info)
964
{
965
  char llbuff[22];
unknown's avatar
unknown committed
966
  my_off_t hexdump_from= print_event_info->hexdump_from;
unknown's avatar
unknown committed
967

968 969
  fputc('#', file);
  print_timestamp(file);
970
  fprintf(file, " server id %d  end_log_pos %s ", server_id,
971
	  llstr(log_pos,llbuff));
972

973
  /* mysqlbinlog --hexdump */
unknown's avatar
unknown committed
974
  if (print_event_info->hexdump_from)
975 976
  {
    fprintf(file, "\n");
977 978 979
    uchar *ptr= (uchar*)temp_buf;
    my_off_t size=
      uint4korr(ptr + EVENT_LEN_OFFSET) - LOG_EVENT_MINIMAL_HEADER_LEN;
980 981
    my_off_t i;

982 983 984 985
    /* 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};

unknown's avatar
unknown committed
986
    /* Pretty-print event common header if header is exactly 19 bytes */
unknown's avatar
unknown committed
987
    if (print_event_info->common_header_len == LOG_EVENT_MINIMAL_HEADER_LEN)
unknown's avatar
unknown committed
988 989 990 991 992 993
    {
      fprintf(file, "# Position  Timestamp   Type   Master ID        "
	      "Size      Master Pos    Flags \n");
      fprintf(file, "# %8.8lx %02x %02x %02x %02x   %02x   "
	      "%02x %02x %02x %02x   %02x %02x %02x %02x   "
	      "%02x %02x %02x %02x   %02x %02x\n",
994 995 996 997
	      (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]);
unknown's avatar
unknown committed
998 999 1000
      ptr += LOG_EVENT_MINIMAL_HEADER_LEN;
      hexdump_from += LOG_EVENT_MINIMAL_HEADER_LEN;
    }
1001 1002 1003 1004 1005

    /* Rest of event (without common header) */
    for (i= 0, c= char_string, h=hex_string;
	 i < size;
	 i++, ptr++)
1006
    {
1007 1008
      my_snprintf(h, 4, "%02x ", *ptr);
      h += 3;
1009

1010
      *c++= my_isalnum(&my_charset_bin, *ptr) ? *ptr : '.';
1011 1012 1013

      if (i % 16 == 15)
      {
1014
	fprintf(file, "# %8.8lx %-48.48s |%16s|\n",
1015 1016
		(unsigned long) (hexdump_from + (i & 0xfffffff0)),
                hex_string, char_string);
1017 1018 1019 1020
	hex_string[0]= 0;
	char_string[0]= 0;
	c= char_string;
	h= hex_string;
1021
      }
1022
      else if (i % 8 == 7) *h++ = ' ';
1023
    }
1024
    *c= '\0';
1025

1026
    /* Non-full last line */
unknown's avatar
unknown committed
1027
    if (hex_string[0])
1028 1029 1030
      fprintf(file, "# %8.8lx %-48.48s |%s|\n# ",
	     (unsigned long) (hexdump_from + (i & 0xfffffff0)),
             hex_string, char_string);
1031
  }
1032 1033
}

1034

1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052
void Log_event::print_base64(FILE* file, PRINT_EVENT_INFO* print_event_info)
{
  uchar *ptr= (uchar*)temp_buf;
  my_off_t size= uint4korr(ptr + EVENT_LEN_OFFSET);

  char *tmp_str=
    (char *) my_malloc(base64_needed_encoded_length(size), MYF(MY_WME));
  if (!tmp_str) {
    fprintf(stderr, "\nError: Out of memory. "
            "Could not print correct binlog event.\n");
    return;
  }
  int res= base64_encode(ptr, size, tmp_str);
  fprintf(file, "\nBINLOG '\n%s\n';\n", tmp_str);
  my_free(tmp_str, MYF(0));
}


unknown's avatar
unknown committed
1053
/*
1054
  Log_event::print_timestamp()
unknown's avatar
unknown committed
1055
*/
1056

1057
void Log_event::print_timestamp(FILE* file, time_t* ts)
unknown's avatar
unknown committed
1058
{
unknown's avatar
unknown committed
1059
  struct tm *res;
1060 1061
  if (!ts)
    ts = &when;
1062 1063
#ifdef MYSQL_SERVER				// This is always false
  struct tm tm_tmp;
unknown's avatar
unknown committed
1064
  localtime_r(ts,(res= &tm_tmp));
unknown's avatar
unknown committed
1065
#else
1066
  res=localtime(ts);
unknown's avatar
unknown committed
1067
#endif
1068 1069

  fprintf(file,"%02d%02d%02d %2d:%02d:%02d",
1070 1071 1072 1073 1074 1075
	  res->tm_year % 100,
	  res->tm_mon+1,
	  res->tm_mday,
	  res->tm_hour,
	  res->tm_min,
	  res->tm_sec);
unknown's avatar
unknown committed
1076 1077
}

unknown's avatar
unknown committed
1078
#endif /* MYSQL_CLIENT */
unknown's avatar
unknown committed
1079 1080


unknown's avatar
unknown committed
1081
/**************************************************************************
unknown's avatar
unknown committed
1082
	Query_log_event methods
unknown's avatar
unknown committed
1083
**************************************************************************/
1084

unknown's avatar
SCRUM  
unknown committed
1085
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
1086

unknown's avatar
unknown committed
1087
/*
1088
  Query_log_event::pack_info()
1089 1090 1091 1092
  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).
unknown's avatar
unknown committed
1093
*/
1094

1095
void Query_log_event::pack_info(Protocol *protocol)
unknown's avatar
unknown committed
1096
{
1097
  // TODO: show the catalog ??
1098 1099 1100
  char *buf, *pos;
  if (!(buf= my_malloc(9 + db_len + q_len, MYF(MY_WME))))
    return;
1101 1102
  pos= buf;
  if (!(flags & LOG_EVENT_SUPPRESS_USE_F)
1103
      && db && db_len)
1104
  {
1105 1106
    pos= strmov(buf, "use `");
    memcpy(pos, db, db_len);
unknown's avatar
unknown committed
1107
    pos= strmov(pos+db_len, "`; ");
1108
  }
1109
  if (query && q_len)
1110 1111 1112 1113
  {
    memcpy(pos, query, q_len);
    pos+= q_len;
  }
1114
  protocol->store(buf, pos-buf, &my_charset_bin);
1115
  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
1116
}
unknown's avatar
SCRUM  
unknown committed
1117
#endif
1118

1119
#ifndef MYSQL_CLIENT
1120

1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132
/* Utility function for the next method */
static void write_str_with_code_and_len(char **dst, const char *src,
                                        int len, uint code)
{
  DBUG_ASSERT(src);
  *((*dst)++)= code;
  *((*dst)++)= (uchar) len;
  bmove(*dst, src, len);
  (*dst)+= len;
}


unknown's avatar
unknown committed
1133
/*
1134
  Query_log_event::write()
unknown's avatar
unknown committed
1135

1136 1137 1138 1139
  NOTES:
    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!
unknown's avatar
unknown committed
1140
*/
1141

1142
bool Query_log_event::write(IO_CACHE* file)
unknown's avatar
unknown committed
1143
{
1144 1145 1146 1147 1148
  uchar buf[QUERY_HEADER_LEN+
            1+4+           // code of flags2 and flags2
            1+8+           // code of sql_mode and sql_mode
            1+1+FN_REFLEN+ // code of catalog and catalog length and catalog
            1+4+           // code of autoinc and the 2 autoinc variables
1149 1150
            1+6+           // code of charset and charset
            1+1+MAX_TIME_ZONE_NAME_LENGTH // code of tz and tz length and tz name
1151
            ], *start, *start_of_status;
1152
  ulong event_length;
unknown's avatar
unknown committed
1153

1154
  if (!query)
1155 1156
    return 1;                                   // Something wrong with event

unknown's avatar
unknown committed
1157 1158 1159 1160 1161
  /*
    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.
1162
    Now imagine we (write()) are called by the slave SQL thread (we are
unknown's avatar
unknown committed
1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194
    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);
1195 1196 1197 1198
  int4store(buf + Q_EXEC_TIME_OFFSET, exec_time);
  buf[Q_DB_LEN_OFFSET] = (char) db_len;
  int2store(buf + Q_ERR_CODE_OFFSET, error_code);

1199 1200 1201 1202 1203 1204 1205 1206
  /*
    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)
  {
1207
    *start++= Q_FLAGS2_CODE;
1208 1209 1210 1211 1212
    int4store(start, flags2);
    start+= 4;
  }
  if (sql_mode_inited)
  {
1213
    *start++= Q_SQL_MODE_CODE;
unknown's avatar
unknown committed
1214
    int8store(start, (ulonglong)sql_mode);
1215 1216
    start+= 8;
  }
1217
  if (catalog_len) // i.e. this var is inited (false for 4.0 events)
1218
  {
1219 1220
    write_str_with_code_and_len((char **)(&start),
                                catalog, catalog_len, Q_CATALOG_NZ_CODE);
1221
    /*
1222 1223 1224 1225 1226 1227
      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
1228 1229 1230 1231 1232
      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
1233 1234
      Q_AUTO_INCREMENT*, Q_CHARSET and so replication will fail silently in
      various ways. Documented that you should not mix alpha/beta versions if
1235 1236 1237
      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.
1238 1239 1240 1241 1242 1243 1244 1245 1246
    */
  }
  if (auto_increment_increment != 1)
  {
    *start++= Q_AUTO_INCREMENT;
    int2store(start, auto_increment_increment);
    int2store(start+2, auto_increment_offset);
    start+= 4;
  }
1247 1248
  if (charset_inited)
  {
1249
    *start++= Q_CHARSET_CODE;
1250 1251 1252
    memcpy(start, charset, 6);
    start+= 6;
  }
1253 1254 1255 1256 1257 1258 1259 1260 1261
  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);
    *start++= Q_TIME_ZONE_CODE;
    *start++= time_zone_len;
    memcpy(start, time_zone_str, time_zone_len);
    start+= time_zone_len;
  }
1262 1263
  /*
    Here there could be code like
1264
    if (command-line-option-which-says-"log_this_variable" && inited)
1265
    {
1266
    *start++= Q_THIS_VARIABLE_CODE;
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
    int4store(start, this_variable);
    start+= 4;
    }
  */
  
  /* Store length of status variables */
  status_vars_len= (uint) (start-start_of_status);
  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
  */
unknown's avatar
unknown committed
1280
  event_length= (uint) (start-buf) + get_post_header_size_for_derived() + db_len + 1 + q_len;
1281 1282

  return (write_header(file, event_length) ||
unknown's avatar
unknown committed
1283 1284 1285 1286
          my_b_safe_write(file, (byte*) buf, QUERY_HEADER_LEN) ||
          write_post_header_for_derived(file) ||
          my_b_safe_write(file, (byte*) start_of_status,
                          (uint) (start-start_of_status)) ||
1287 1288
          my_b_safe_write(file, (db) ? (byte*) db : (byte*)"", db_len + 1) ||
          my_b_safe_write(file, (byte*) query, q_len)) ? 1 : 0;
unknown's avatar
unknown committed
1289 1290
}

1291

unknown's avatar
unknown committed
1292
/*
1293
  Query_log_event::Query_log_event()
unknown's avatar
unknown committed
1294
*/
1295
Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg,
1296 1297
				 ulong query_length, bool using_trans,
				 bool suppress_use)
1298
  :Log_event(thd_arg,
1299 1300 1301
	     ((thd_arg->tmp_table_used ? LOG_EVENT_THREAD_SPECIFIC_F : 0)
	      | (suppress_use          ? LOG_EVENT_SUPPRESS_USE_F    : 0)),
	     using_trans),
1302
   data_buf(0), query(query_arg), catalog(thd_arg->catalog),
1303
   db(thd_arg->db), q_len((uint32) query_length),
1304
   error_code((thd_arg->killed != THD::NOT_KILLED) ?
1305
              ((thd_arg->system_thread & SYSTEM_THREAD_DELAYED_INSERT) ?
1306
               0 : thd->killed_errno()) : thd_arg->net.last_errno),
unknown's avatar
unknown committed
1307 1308
   thread_id(thd_arg->thread_id),
   /* save the original thread id; we already know the server id */
1309
   slave_proxy_id(thd_arg->variables.pseudo_thread_id),
1310
   flags2_inited(1), sql_mode_inited(1), charset_inited(1),
1311 1312 1313
   sql_mode(thd_arg->variables.sql_mode),
   auto_increment_increment(thd_arg->variables.auto_increment_increment),
   auto_increment_offset(thd_arg->variables.auto_increment_offset)
1314 1315 1316 1317
{
  time_t end_time;
  time(&end_time);
  exec_time = (ulong) (end_time  - thd->start_time);
1318
  catalog_len = (catalog) ? (uint32) strlen(catalog) : 0;
1319
  /* status_vars_len is set just before writing the event */
1320
  db_len = (db) ? (uint32) strlen(db) : 0;
1321 1322 1323 1324 1325 1326 1327
  /*
    If we don't use flags2 for anything else than options contained in
    thd->options, it would be more efficient to flags2=thd_arg->options
    (OPTIONS_WRITTEN_TO_BINLOG would be used only at reading time).
    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 &.
  */
unknown's avatar
unknown committed
1328
  flags2= (uint32) (thd_arg->options & OPTIONS_WRITTEN_TO_BIN_LOG);
1329 1330 1331 1332 1333 1334
  DBUG_ASSERT(thd->variables.character_set_client->number < 256*256);
  DBUG_ASSERT(thd->variables.collation_connection->number < 256*256);
  DBUG_ASSERT(thd->variables.collation_server->number < 256*256);
  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);
1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346
  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;
1347
  DBUG_PRINT("info",("Query_log_event has flags2=%lu sql_mode=%lu",flags2,sql_mode));
1348
}
unknown's avatar
unknown committed
1349
#endif /* MYSQL_CLIENT */
1350

unknown's avatar
unknown committed
1351

1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370
/* 2 utility functions for the next method */

static void get_str_len_and_pointer(const char **dst, const char **src, uint *len)
{
  if ((*len= **src))
    *dst= *src + 1;                          // Will be copied later
  (*src)+= *len+1;
}


static void copy_str_and_move(char **dst, const char **src, uint len)
{
  memcpy(*dst, *src, len);
  *src= *dst;
  (*dst)+= len;
  *(*dst)++= 0;
}


unknown's avatar
unknown committed
1371
/*
1372
  Query_log_event::Query_log_event()
1373
  This is used by the SQL slave thread to prepare the event before execution.
unknown's avatar
unknown committed
1374
*/
1375

1376
Query_log_event::Query_log_event(const char* buf, uint event_len,
unknown's avatar
unknown committed
1377 1378
                                 const Format_description_log_event *description_event,
                                 Log_event_type event_type)
1379
  :Log_event(buf, description_event), data_buf(0), query(NullS),
1380
   db(NullS), catalog_len(0), status_vars_len(0),
1381
   flags2_inited(0), sql_mode_inited(0), charset_inited(0),
1382 1383
   auto_increment_increment(1), auto_increment_offset(1),
   time_zone_len(0)
unknown's avatar
unknown committed
1384 1385
{
  ulong data_len;
1386 1387
  uint32 tmp;
  uint8 common_header_len, post_header_len;
1388 1389
  char *start;
  const char *end;
1390
  bool catalog_nz= 1;
1391 1392 1393
  DBUG_ENTER("Query_log_event::Query_log_event(char*,...)");

  common_header_len= description_event->common_header_len;
unknown's avatar
unknown committed
1394
  post_header_len= description_event->post_header_len[event_type-1];
1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409
  DBUG_PRINT("info",("event_len=%ld, common_header_len=%d, post_header_len=%d",
                     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);
1410
  db_len = (uint)buf[Q_DB_LEN_OFFSET]; // TODO: add a check of all *_len vars
1411 1412 1413 1414 1415 1416 1417 1418 1419
  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)
1420
  {
1421 1422 1423 1424 1425
    status_vars_len= uint2korr(buf + Q_STATUS_VARS_LEN_OFFSET);
    data_len-= status_vars_len;
    DBUG_PRINT("info", ("Query_log_event has status_vars_len: %u",
                        (uint) status_vars_len));
    tmp-= 2;
1426
  }
unknown's avatar
unknown committed
1427 1428 1429 1430 1431 1432
  /*
    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...)
  */

1433 1434 1435
  /* variable-part: the status vars; only in MySQL 5.0  */
  
  start= (char*) (buf+post_header_len);
1436
  end= (const char*) (start+status_vars_len);
1437
  for (const uchar* pos= (const uchar*) start; pos < (const uchar*) end;)
1438
  {
1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457
    switch (*pos++) {
    case Q_FLAGS2_CODE:
      flags2_inited= 1;
      flags2= uint4korr(pos);
      DBUG_PRINT("info",("In Query_log_event, read flags2: %lu", flags2));
      pos+= 4;
      break;
    case Q_SQL_MODE_CODE:
    {
#ifndef DBUG_OFF
      char buff[22];
#endif
      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;
    }
1458
    case Q_CATALOG_NZ_CODE:
1459
      get_str_len_and_pointer(&catalog, (const char **)(&pos), &catalog_len);
1460 1461 1462 1463 1464 1465
      break;
    case Q_AUTO_INCREMENT:
      auto_increment_increment= uint2korr(pos);
      auto_increment_offset=    uint2korr(pos+2);
      pos+= 4;
      break;
1466 1467 1468 1469 1470 1471 1472
    case Q_CHARSET_CODE:
    {
      charset_inited= 1;
      memcpy(charset, pos, 6);
      pos+= 6;
      break;
    }
1473 1474
    case Q_TIME_ZONE_CODE:
    {
1475
      get_str_len_and_pointer(&time_zone_str, (const char **)(&pos), &time_zone_len);
1476 1477
      break;
    }
1478 1479 1480 1481 1482 1483
    case Q_CATALOG_CODE: /* for 5.0.x where 0<=x<=3 masters */
      if ((catalog_len= *pos))
        catalog= (char*) pos+1;                           // Will be copied later
      pos+= catalog_len+2; // leap over end 0
      catalog_nz= 0; // catalog has end 0 in event
      break;
1484 1485 1486 1487
    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)));
1488
      pos= (const uchar*) end;                         // Break loop
1489
    }
1490
  }
1491
  
1492
#if !defined(MYSQL_CLIENT) && defined(HAVE_QUERY_CACHE)
1493 1494
  if (!(start= data_buf = (char*) my_malloc(catalog_len + 1 +
                                            time_zone_len + 1 +
1495 1496 1497 1498 1499 1500 1501 1502 1503
                                            data_len + 1 +
					    QUERY_CACHE_FLAGS_SIZE +
					    db_len + 1,
					    MYF(MY_WME))))
#else
  if (!(start= data_buf = (char*) my_malloc(catalog_len + 1 +
                                            time_zone_len + 1 +
                                            data_len + 1,
					    MYF(MY_WME))))
1504
#endif
unknown's avatar
unknown committed
1505
      DBUG_VOID_RETURN;
1506
  if (catalog_len)                                  // If catalog is given
1507
  {
1508
    if (likely(catalog_nz)) // true except if event comes from 5.0.0|1|2|3.
1509
      copy_str_and_move(&start, &catalog, catalog_len);
1510 1511 1512 1513 1514 1515
    else
    {
      memcpy(start, catalog, catalog_len+1); // copy end 0
      catalog= start;
      start+= catalog_len+1;
    }
1516
  }
1517
  if (time_zone_len)
1518 1519
    copy_str_and_move(&start, &time_zone_str, time_zone_len);

1520
  /* A 2nd variable part; this is common to all versions */ 
1521
  memcpy((char*) start, end, data_len);          // Copy db and query
1522
  start[data_len]= '\0';              // End query with \0 (For safetly)
1523 1524 1525 1526
  db= start;
  query= start + db_len + 1;
  q_len= data_len - db_len -1;
  DBUG_VOID_RETURN;
unknown's avatar
unknown committed
1527 1528
}

1529

unknown's avatar
unknown committed
1530
/*
1531
  Query_log_event::print()
unknown's avatar
unknown committed
1532
*/
1533

1534
#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
1535
void Query_log_event::print_query_header(FILE* file,
unknown's avatar
unknown committed
1536
					 PRINT_EVENT_INFO* print_event_info)
unknown's avatar
unknown committed
1537
{
1538
  // TODO: print the catalog ??
1539
  char buff[40],*end;				// Enough for SET TIMESTAMP
1540 1541 1542
  bool different_db= 1;
  uint32 tmp;

unknown's avatar
unknown committed
1543
  if (!print_event_info->short_form)
unknown's avatar
unknown committed
1544
  {
unknown's avatar
unknown committed
1545
    print_header(file, print_event_info);
unknown's avatar
unknown committed
1546 1547
    fprintf(file, "\t%s\tthread_id=%lu\texec_time=%lu\terror_code=%d\n",
	    get_type_str(), (ulong) thread_id, (ulong) exec_time, error_code);
unknown's avatar
unknown committed
1548 1549
  }

unknown's avatar
unknown committed
1550
  if (!(flags & LOG_EVENT_SUPPRESS_USE_F) && db)
1551
  {
unknown's avatar
unknown committed
1552 1553
    if (different_db= memcmp(print_event_info->db, db, db_len + 1))
      memcpy(print_event_info->db, db, db_len + 1);
unknown's avatar
unknown committed
1554
    if (db[0] && different_db) 
1555
      fprintf(file, "use %s;\n", db);
1556
  }
1557

1558 1559 1560 1561
  end=int10_to_str((long) when, strmov(buff,"SET TIMESTAMP="),10);
  *end++=';';
  *end++='\n';
  my_fwrite(file, (byte*) buff, (uint) (end-buff),MYF(MY_NABP | MY_WME));
unknown's avatar
unknown committed
1562 1563
  if (flags & LOG_EVENT_THREAD_SPECIFIC_F)
    fprintf(file,"SET @@session.pseudo_thread_id=%lu;\n",(ulong)thread_id);
1564

1565
  /*
1566 1567 1568
    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).
1569 1570 1571 1572
  */
  if (likely(flags2_inited)) /* likely as this will mainly read 5.0 logs */
  {
    /* tmp is a bitmask of bits which have changed. */
unknown's avatar
unknown committed
1573
    if (likely(print_event_info->flags2_inited)) 
1574
      /* All bits which have changed */
unknown's avatar
unknown committed
1575
      tmp= (print_event_info->flags2) ^ flags2;
1576 1577
    else /* that's the first Query event we read */
    {
unknown's avatar
unknown committed
1578
      print_event_info->flags2_inited= 1;
1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592
      tmp= ~((uint32)0); /* all bits have changed */
    }

    if (unlikely(tmp)) /* some bits have changed */
    {
      bool need_comma= 0;
      fprintf(file, "SET ");
      print_set_option(file, tmp, OPTION_NO_FOREIGN_KEY_CHECKS, ~flags2,
                   "@@session.foreign_key_checks", &need_comma);
      print_set_option(file, tmp, OPTION_AUTO_IS_NULL, flags2,
                   "@@session.sql_auto_is_null", &need_comma);
      print_set_option(file, tmp, OPTION_RELAXED_UNIQUE_CHECKS, ~flags2,
                   "@@session.unique_checks", &need_comma);
      fprintf(file,";\n");
unknown's avatar
unknown committed
1593
      print_event_info->flags2= flags2;
1594 1595 1596 1597
    }
  }

  /*
1598 1599 1600 1601 1602 1603 1604 1605 1606 1607
    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.
1608 1609 1610 1611
  */

  if (likely(sql_mode_inited))
  {
unknown's avatar
unknown committed
1612
    if (unlikely(!print_event_info->sql_mode_inited)) /* first Query event */
1613
    {
unknown's avatar
unknown committed
1614
      print_event_info->sql_mode_inited= 1;
1615
      /* force a difference to force write */
unknown's avatar
unknown committed
1616
      print_event_info->sql_mode= ~sql_mode;
1617
    }
unknown's avatar
unknown committed
1618
    if (unlikely(print_event_info->sql_mode != sql_mode))
1619 1620
    {
      fprintf(file,"SET @@session.sql_mode=%lu;\n",(ulong)sql_mode);
unknown's avatar
unknown committed
1621
      print_event_info->sql_mode= sql_mode;
1622 1623
    }
  }
unknown's avatar
unknown committed
1624 1625
  if (print_event_info->auto_increment_increment != auto_increment_increment ||
      print_event_info->auto_increment_offset != auto_increment_offset)
1626 1627 1628
  {
    fprintf(file,"SET @@session.auto_increment_increment=%lu, @@session.auto_increment_offset=%lu;\n",
            auto_increment_increment,auto_increment_offset);
unknown's avatar
unknown committed
1629 1630
    print_event_info->auto_increment_increment= auto_increment_increment;
    print_event_info->auto_increment_offset=    auto_increment_offset;
1631 1632
  }

1633 1634
  /* TODO: print the catalog when we feature SET CATALOG */

1635 1636
  if (likely(charset_inited))
  {
unknown's avatar
unknown committed
1637
    if (unlikely(!print_event_info->charset_inited)) /* first Query event */
1638
    {
unknown's avatar
unknown committed
1639 1640
      print_event_info->charset_inited= 1;
      print_event_info->charset[0]= ~charset[0]; // force a difference to force write
1641
    }
unknown's avatar
unknown committed
1642
    if (unlikely(bcmp(print_event_info->charset, charset, 6)))
1643
    {
1644 1645 1646 1647 1648
      CHARSET_INFO *cs_info= get_charset(uint2korr(charset), MYF(MY_WME));
      if (cs_info)
      {
        fprintf(file, "/*!\\C %s */;\n", cs_info->csname); /* for mysql client */
      }
1649 1650 1651 1652 1653 1654 1655 1656
      fprintf(file,"SET "
              "@@session.character_set_client=%d,"
              "@@session.collation_connection=%d,"
              "@@session.collation_server=%d"
              ";\n",
              uint2korr(charset),
              uint2korr(charset+2),
              uint2korr(charset+4));
unknown's avatar
unknown committed
1657
      memcpy(print_event_info->charset, charset, 6);
1658 1659
    }
  }
1660 1661
  if (time_zone_len)
  {
unknown's avatar
unknown committed
1662
    if (bcmp(print_event_info->time_zone_str, time_zone_str, time_zone_len+1))
1663 1664
    {
      fprintf(file,"SET @@session.time_zone='%s';\n", time_zone_str);
unknown's avatar
unknown committed
1665
      memcpy(print_event_info->time_zone_str, time_zone_str, time_zone_len+1);
1666 1667
    }
  }
unknown's avatar
unknown committed
1668 1669
}

1670

unknown's avatar
unknown committed
1671
void Query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
unknown's avatar
unknown committed
1672
{
unknown's avatar
unknown committed
1673
  print_query_header(file, print_event_info);
unknown's avatar
unknown committed
1674
  my_fwrite(file, (byte*) query, q_len, MYF(MY_NABP | MY_WME));
1675
  fputs(";\n", file);
unknown's avatar
unknown committed
1676
}
unknown's avatar
unknown committed
1677
#endif /* MYSQL_CLIENT */
1678

unknown's avatar
unknown committed
1679

unknown's avatar
unknown committed
1680
/*
1681
  Query_log_event::exec_event()
unknown's avatar
unknown committed
1682
*/
unknown's avatar
unknown committed
1683

unknown's avatar
SCRUM  
unknown committed
1684
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
1685
int Query_log_event::exec_event(struct st_relay_log_info* rli)
unknown's avatar
unknown committed
1686 1687 1688 1689 1690 1691
{
  return exec_event(rli, query, q_len);
}


int Query_log_event::exec_event(struct st_relay_log_info* rli, const char *query_arg, uint32 q_len_arg)
unknown's avatar
unknown committed
1692
{
unknown's avatar
unknown committed
1693
  int expected_error,actual_error= 0;
1694 1695 1696 1697 1698 1699
  /*
    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 Query_log_event::exec_event()). Same for thd->db.
    Thank you.
  */
1700
  thd->catalog= catalog_len ? (char *) catalog : (char *)"";
unknown's avatar
unknown committed
1701
  thd->db_length= db_len;
1702
  thd->db= (char *) rpl_filter->get_rewrite_db(db, &thd->db_length);
1703 1704
  thd->variables.auto_increment_increment= auto_increment_increment;
  thd->variables.auto_increment_offset=    auto_increment_offset;
unknown's avatar
unknown committed
1705

1706
  /*
1707 1708 1709 1710 1711 1712 1713 1714
    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.
1715
  */
unknown's avatar
unknown committed
1716
  rli->future_group_master_log_pos= log_pos;
1717 1718
  DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));

unknown's avatar
unknown committed
1719
  clear_all_errors(thd, rli);
1720
  rli->clear_tables_to_lock();
1721

unknown's avatar
unknown committed
1722 1723 1724 1725 1726 1727 1728 1729 1730 1731
  /*
    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
            ::exec_event(), then the companion SET also have so we
            don't need to reset_one_shot_variables().
  */
1732
  if (rpl_filter->db_ok(thd->db))
1733 1734
  {
    thd->set_time((time_t)when);
unknown's avatar
unknown committed
1735 1736
    thd->query_length= q_len_arg;
    thd->query= (char*)query_arg;
unknown's avatar
unknown committed
1737
    VOID(pthread_mutex_lock(&LOCK_thread_count));
1738
    thd->query_id = next_query_id();
1739
    VOID(pthread_mutex_unlock(&LOCK_thread_count));
unknown's avatar
unknown committed
1740
    thd->variables.pseudo_thread_id= thread_id;		// for temp tables
unknown's avatar
unknown committed
1741
    DBUG_PRINT("query",("%s",thd->query));
1742

unknown's avatar
unknown committed
1743
    if (ignored_error_code((expected_error= error_code)) ||
1744
	!check_expected_error(thd,rli,expected_error))
1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780
    {
      if (flags2_inited)
        /*
          all bits of thd->options which are 1 in OPTIONS_WRITTEN_TO_BIN_LOG must
          take their value from flags2.
        */
        thd->options= flags2|(thd->options & ~(ulong)OPTIONS_WRITTEN_TO_BIN_LOG);
      /*
        else, we are in a 3.23/4.0 binlog; we previously received a
        Rotate_log_event which reset thd->options and sql_mode etc, so nothing to do.
      */
      /*
        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
        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).
      */
      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))))
          {
            /*
1781 1782 1783 1784
              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).
1785
            */
1786
            set_slave_thread_default_charset(thd, rli);
1787 1788 1789 1790 1791
            goto compare_errors;
          }
          thd->update_charset(); // for the charset change to take effect
        }
      }
1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802
      if (time_zone_len)
      {
        String tmp(time_zone_str, time_zone_len, &my_charset_bin);
        if (!(thd->variables.time_zone=
              my_tz_find_with_opening_tz_tables(thd, &tmp)))
        {
          my_error(ER_UNKNOWN_TIME_ZONE, MYF(0), tmp.c_ptr());
          thd->variables.time_zone= global_system_variables.time_zone;
          goto compare_errors;
        }
      }
1803 1804

      /* Execute the query (note that we bypass dispatch_command()) */
unknown's avatar
unknown committed
1805
      mysql_parse(thd, thd->query, thd->query_length);
1806 1807

    }
unknown's avatar
unknown committed
1808 1809
    else
    {
unknown's avatar
unknown committed
1810
      /*
unknown's avatar
unknown committed
1811 1812 1813 1814 1815
        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.
unknown's avatar
unknown committed
1816
      */
unknown's avatar
unknown committed
1817
      if (mysql_test_parse_for_slave(thd, thd->query, thd->query_length))
unknown's avatar
unknown committed
1818 1819
        clear_all_errors(thd, rli);        /* Can ignore query */
      else
1820
      {
1821
        slave_print_msg(ERROR_LEVEL, rli, expected_error, 
unknown's avatar
unknown committed
1822
                          "\
unknown's avatar
unknown committed
1823
Query partially completed on the master (error on master: %d) \
unknown's avatar
unknown committed
1824 1825 1826
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; \
unknown's avatar
unknown committed
1827
START SLAVE; . Query: '%s'", expected_error, thd->query);
unknown's avatar
unknown committed
1828 1829 1830 1831
        thd->query_error= 1;
      }
      goto end;
    }
1832

1833 1834
    /* If the query was not ignored, it is printed to the general log */
    if (thd->net.last_errno != ER_SLAVE_IGNORED_TABLE)
1835
      general_log_print(thd, COM_QUERY, "%s", thd->query);
1836

1837
compare_errors:
unknown's avatar
unknown committed
1838 1839

     /*
unknown's avatar
unknown committed
1840 1841 1842 1843
      If we expected a non-zero error code, and we don't get the same error
      code, and none of them should be ignored.
    */
    DBUG_PRINT("info",("expected_error: %d  last_errno: %d",
1844
 		       expected_error, thd->net.last_errno));
unknown's avatar
unknown committed
1845
    if ((expected_error != (actual_error= thd->net.last_errno)) &&
1846 1847 1848
 	expected_error &&
 	!ignored_error_code(actual_error) &&
 	!ignored_error_code(expected_error))
unknown's avatar
unknown committed
1849
    {
1850 1851 1852
      slave_print_msg(ERROR_LEVEL, rli, 0,
                      "\
Query caused different errors on master and slave.     \
unknown's avatar
unknown committed
1853
Error on master: '%s' (%d), Error on slave: '%s' (%d). \
unknown's avatar
unknown committed
1854
Default database: '%s'. Query: '%s'",
1855 1856 1857 1858 1859
                      ER_SAFE(expected_error),
                      expected_error,
                      actual_error ? thd->net.last_error: "no error",
                      actual_error,
                      print_slave_db_safe(db), query_arg);
unknown's avatar
unknown committed
1860 1861 1862 1863 1864 1865
      thd->query_error= 1;
    }
    /*
      If we get the same error code as expected, or they should be ignored. 
    */
    else if (expected_error == actual_error ||
1866
 	     ignored_error_code(actual_error))
unknown's avatar
unknown committed
1867 1868 1869 1870 1871 1872
    {
      DBUG_PRINT("info",("error ignored"));
      clear_all_errors(thd, rli);
    }
    /*
      Other cases: mostly we expected no error and get one.
unknown's avatar
unknown committed
1873
    */
unknown's avatar
unknown committed
1874 1875
    else if (thd->query_error || thd->is_fatal_error)
    {
1876 1877 1878 1879 1880
      slave_print_msg(ERROR_LEVEL, rli, actual_error,
                      "Error '%s' on query. Default database: '%s'. Query: '%s'",
                      (actual_error ? thd->net.last_error :
                       "unexpected success or fatal error"),
                      print_slave_db_safe(thd->db), query_arg);
unknown's avatar
unknown committed
1881 1882
      thd->query_error= 1;
    }
1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896

    /*
      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, ...);
      thd->query_error = 1;
      }
      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...
1897

1898 1899 1900 1901 1902 1903 1904
      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.
    */
unknown's avatar
unknown committed
1905 1906
  } /* End of if (db_ok(... */

unknown's avatar
unknown committed
1907
end:
1908
  VOID(pthread_mutex_lock(&LOCK_thread_count));
1909 1910 1911 1912 1913 1914
  /*
    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
1915 1916 1917
    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.
1918 1919
  */
  thd->db= thd->catalog= 0;	        // prevent db from being freed
1920
  thd->query= 0;			// just to be sure
unknown's avatar
unknown committed
1921
  thd->query_length= thd->db_length =0;
1922
  VOID(pthread_mutex_unlock(&LOCK_thread_count));
unknown's avatar
unknown committed
1923
  close_thread_tables(thd);      
unknown's avatar
unknown committed
1924
  free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
1925 1926 1927 1928 1929 1930 1931
  /*
    If there was an error we stop. Otherwise we increment positions. 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.
  */
  return (thd->query_error ? thd->query_error : 
1932
          (thd->one_shot_set ? (rli->inc_event_relay_log_pos(),0) :
1933
           Log_event::exec_event(rli))); 
unknown's avatar
unknown committed
1934
}
unknown's avatar
SCRUM  
unknown committed
1935
#endif
unknown's avatar
unknown committed
1936

unknown's avatar
unknown committed
1937

unknown's avatar
unknown committed
1938
/**************************************************************************
1939
	Start_log_event_v3 methods
unknown's avatar
unknown committed
1940
**************************************************************************/
1941

1942 1943 1944 1945 1946 1947 1948 1949
#ifndef MYSQL_CLIENT
Start_log_event_v3::Start_log_event_v3() :Log_event(), binlog_version(BINLOG_VERSION), artificial_event(0)
{
  created= when;
  memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
}
#endif

unknown's avatar
unknown committed
1950
/*
1951
  Start_log_event_v3::pack_info()
unknown's avatar
unknown committed
1952
*/
1953

unknown's avatar
SCRUM  
unknown committed
1954
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
1955
void Start_log_event_v3::pack_info(Protocol *protocol)
unknown's avatar
unknown committed
1956
{
1957 1958 1959 1960
  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: ");
unknown's avatar
unknown committed
1961 1962
  pos= int10_to_str(binlog_version, pos, 10);
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
unknown's avatar
unknown committed
1963
}
unknown's avatar
SCRUM  
unknown committed
1964
#endif
1965 1966


unknown's avatar
unknown committed
1967
/*
1968
  Start_log_event_v3::print()
unknown's avatar
unknown committed
1969
*/
unknown's avatar
unknown committed
1970 1971

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
1972
void Start_log_event_v3::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
unknown's avatar
unknown committed
1973
{
unknown's avatar
unknown committed
1974
  if (!print_event_info->short_form)
1975
  {
unknown's avatar
unknown committed
1976
    print_header(file, print_event_info);
1977 1978 1979 1980 1981 1982
    fprintf(file, "\tStart: binlog v %d, server v %s created ", binlog_version,
            server_version);
    print_timestamp(file);
    if (created)
      fprintf(file," at startup");
    fputc('\n', file);
1983 1984 1985
    if (flags & LOG_EVENT_BINLOG_IN_USE_F)
      fprintf(file, "# Warning: this binlog was not closed properly. "
              "Most probably mysqld crashed writing it.\n");
1986
  }
1987 1988
  if (!artificial_event && created)
  {
1989
#ifdef WHEN_WE_HAVE_THE_RESET_CONNECTION_SQL_COMMAND
1990 1991 1992 1993 1994 1995 1996 1997 1998
    /*
      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).
    */
    fprintf(file,"RESET CONNECTION;\n");
#else
    fprintf(file,"ROLLBACK;\n");
1999
#endif
2000
  }
unknown's avatar
unknown committed
2001 2002
  fflush(file);
}
unknown's avatar
unknown committed
2003
#endif /* MYSQL_CLIENT */
unknown's avatar
unknown committed
2004

unknown's avatar
unknown committed
2005
/*
2006
  Start_log_event_v3::Start_log_event_v3()
unknown's avatar
unknown committed
2007
*/
2008

2009 2010 2011
Start_log_event_v3::Start_log_event_v3(const char* buf,
                                       const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
2012
{
2013 2014
  buf+= description_event->common_header_len;
  binlog_version= uint2korr(buf+ST_BINLOG_VER_OFFSET);
2015 2016
  memcpy(server_version, buf+ST_SERVER_VER_OFFSET,
	 ST_SERVER_VER_LEN);
2017 2018 2019
  created= uint4korr(buf+ST_CREATED_OFFSET);
  /* We use log_pos to mark if this was an artificial event or not */
  artificial_event= (log_pos == 0);
unknown's avatar
unknown committed
2020 2021
}

2022

unknown's avatar
unknown committed
2023
/*
2024
  Start_log_event_v3::write()
unknown's avatar
unknown committed
2025
*/
2026

2027
#ifndef MYSQL_CLIENT
2028
bool Start_log_event_v3::write(IO_CACHE* file)
2029
{
2030
  char buff[START_V3_HEADER_LEN];
2031 2032 2033
  int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
  memcpy(buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
  int4store(buff + ST_CREATED_OFFSET,created);
2034 2035
  return (write_header(file, sizeof(buff)) ||
          my_b_safe_write(file, (byte*) buff, sizeof(buff)));
2036
}
2037
#endif
2038

2039

unknown's avatar
unknown committed
2040
/*
2041
  Start_log_event_v3::exec_event()
2042 2043 2044 2045

  The master started

  IMPLEMENTATION
unknown's avatar
unknown committed
2046 2047 2048 2049
    - To handle the case where the master died without having time to write
      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).
2050 2051

  TODO
2052 2053 2054 2055 2056
    - Remove all active user locks.
      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.
unknown's avatar
unknown committed
2057 2058
*/

unknown's avatar
SCRUM  
unknown committed
2059
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
2060
int Start_log_event_v3::exec_event(struct st_relay_log_info* rli)
2061
{
2062
  DBUG_ENTER("Start_log_event_v3::exec_event");
2063
  switch (binlog_version)
2064 2065 2066 2067 2068 2069 2070 2071
  {
  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').
unknown's avatar
unknown committed
2072
    */
2073 2074 2075 2076 2077
    if (created)
    {
      close_temporary_tables(thd);
      cleanup_load_tmpdir();
    }
unknown's avatar
unknown committed
2078 2079
    break;

2080
    /*
unknown's avatar
unknown committed
2081 2082
       Now the older formats; in that case load_tmpdir is cleaned up by the I/O
       thread.
unknown's avatar
unknown committed
2083
    */
2084
  case 1:
2085
    if (strncmp(rli->relay_log.description_event_for_exec->server_version,
2086 2087 2088 2089 2090 2091 2092 2093
                "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);
    }
unknown's avatar
unknown committed
2094
    /*
2095 2096 2097
      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.
unknown's avatar
unknown committed
2098 2099 2100 2101
    */
    break;
  default:
    /* this case is impossible */
2102
    DBUG_RETURN(1);
unknown's avatar
unknown committed
2103
  }
2104
  DBUG_RETURN(Log_event::exec_event(rli));
2105
}
unknown's avatar
unknown committed
2106
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
2107

2108 2109 2110 2111 2112 2113 2114 2115 2116
/***************************************************************************
       Format_description_log_event methods
****************************************************************************/

/*
  Format_description_log_event 1st ctor.

  SYNOPSIS
    Format_description_log_event::Format_description_log_event
2117
      binlog_version              the binlog version for which we want to build
2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131
                                  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.

  DESCRIPTION
    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.
*/

Format_description_log_event::
2132
Format_description_log_event(uint8 binlog_ver, const char* server_ver)
2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143
  :Start_log_event_v3()
{
  created= when;
  binlog_version= binlog_ver;
  switch (binlog_ver) {
  case 4: /* MySQL 5.0 */
    memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
    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),
2144
                                       MYF(MY_ZEROFILL));
2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161
    /*
      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;
2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180
      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;);
unknown's avatar
unknown committed
2181 2182
      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;
2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196
    }
    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 :
2197
      LOG_EVENT_MINIMAL_HEADER_LEN;
2198 2199 2200 2201 2202 2203 2204 2205 2206
    /*
      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),
2207
                                       MYF(0));
2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237
    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;
  }
}


/*
  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
2238
  post-header starts.
2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253
  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.
  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*
2254
                             description_event)
2255 2256 2257 2258 2259 2260 2261 2262 2263
  :Start_log_event_v3(buf, description_event)
{
  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",
2264
                      common_header_len, number_of_event_types));
2265 2266 2267
  /* If alloc fails, we'll detect it in is_valid() */
  post_header_len= (uint8*) my_memdup((byte*)buf+ST_COMMON_HEADER_LEN_OFFSET+1,
                                      number_of_event_types*
2268
                                      sizeof(*post_header_len), MYF(0));
2269 2270 2271
  DBUG_VOID_RETURN;
}

2272
#ifndef MYSQL_CLIENT
2273 2274 2275 2276 2277 2278 2279 2280 2281 2282
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().
  */
  byte buff[FORMAT_DESCRIPTION_HEADER_LEN];
  int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
  memcpy((char*) buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
  int4store(buff + ST_CREATED_OFFSET,created);
2283
  buff[ST_COMMON_HEADER_LEN_OFFSET]= LOG_EVENT_HEADER_LEN;
2284 2285 2286 2287 2288
  memcpy((char*) buff+ST_COMMON_HEADER_LEN_OFFSET+1, (byte*) post_header_len,
         LOG_EVENT_TYPES);
  return (write_header(file, sizeof(buff)) ||
          my_b_safe_write(file, buff, sizeof(buff)));
}
2289
#endif
2290

2291 2292 2293
/*
  SYNOPSIS
    Format_description_log_event::exec_event()
2294

2295 2296 2297 2298 2299 2300 2301 2302 2303 2304
  IMPLEMENTATION
    Save the information which describes the binlog's format, to be able to
    read all coming events.
    Call Start_log_event_v3::exec_event().
*/

#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
int Format_description_log_event::exec_event(struct st_relay_log_info* rli)
{
  DBUG_ENTER("Format_description_log_event::exec_event");
2305 2306

  /* save the information describing this binlog */
2307 2308 2309
  delete rli->relay_log.description_event_for_exec;
  rli->relay_log.description_event_for_exec= this;

unknown's avatar
unknown committed
2310
#ifdef USING_TRANSACTIONS
2311 2312 2313 2314
  /*
    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
2315 2316
    flushing the binlog cache to the binlog. XA guarantees that master has
    rolled back. So we roll back.
2317 2318 2319 2320 2321 2322 2323
    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).
  */
  if (!artificial_event && created && thd->transaction.all.nht)
  {
2324 2325 2326 2327 2328 2329 2330
    /* This is not an error (XA is safe), just an information */
    slave_print_msg(INFORMATION_LEVEL, rli, 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."); 
    rli->cleanup_context(thd, 1);
2331
  }
unknown's avatar
unknown committed
2332
#endif
2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360
  /*
    If this event comes from ourselves, there is no cleaning task to perform,
    we don't call Start_log_event_v3::exec_event() (this was just to update the
    log's description event).
  */
  if (server_id == (uint32) ::server_id)
  {
    /*
      Do not modify rli->group_master_log_pos, as this event did not exist on
      the master. That is, just update the *relay log* coordinates; this is
      done by passing log_pos=0 to inc_group_relay_log_pos, like we do in
      Stop_log_event::exec_event().
      If in a transaction, don't touch group_* coordinates.
    */
    if (thd->options & OPTION_BEGIN)
      rli->inc_event_relay_log_pos();
    else
    {
      rli->inc_group_relay_log_pos(0);
      flush_relay_log_info(rli);
    }
    DBUG_RETURN(0);
  }

  /*
    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
2361 2362 2363
    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.
2364 2365 2366 2367 2368 2369
  */
  DBUG_RETURN(Start_log_event_v3::exec_event(rli));
}
#endif

  /**************************************************************************
2370
        Load_log_event methods
2371
   General note about Load_log_event: the binlogging of LOAD DATA INFILE is
2372
   going to be changed in 5.0 (or maybe in 5.1; not decided yet).
2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384
   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).
  **************************************************************************/
2385

unknown's avatar
unknown committed
2386
/*
2387
  Load_log_event::pack_info()
unknown's avatar
unknown committed
2388
*/
2389

unknown's avatar
SCRUM  
unknown committed
2390
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
unknown's avatar
unknown committed
2391
uint Load_log_event::get_query_buffer_length()
2392
{
unknown's avatar
unknown committed
2393
  return
2394 2395
    5 + db_len + 3 +                        // "use DB; "
    18 + fname_len + 2 +                    // "LOAD DATA INFILE 'file''"
unknown's avatar
unknown committed
2396
    7 +					    // LOCAL
2397
    9 +                                     // " REPLACE or IGNORE "
2398
    13 + table_name_len*2 +                 // "INTO TABLE `table`"
2399 2400 2401 2402
    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'"
    21 + sql_ex.line_term_len*4 + 2 +       // " FIELDS TERMINATED BY 'str'"
2403 2404
    19 + sql_ex.line_start_len*4 + 2 +      // " LINES STARTING BY 'str'"
    15 + 22 +                               // " IGNORE xxx  LINES"
2405
    3 + (num_fields-1)*2 + field_block_len; // " (field1, field2, ...)"
unknown's avatar
unknown committed
2406
}
2407

unknown's avatar
unknown committed
2408 2409 2410 2411 2412 2413 2414

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)
2415
  {
2416 2417
    pos= strmov(pos, "use `");
    memcpy(pos, db, db_len);
unknown's avatar
unknown committed
2418
    pos= strmov(pos+db_len, "`; ");
2419
  }
2420

unknown's avatar
unknown committed
2421
  pos= strmov(pos, "LOAD DATA ");
unknown's avatar
unknown committed
2422 2423 2424 2425

  if (fn_start)
    *fn_start= pos;

unknown's avatar
unknown committed
2426 2427 2428
  if (check_fname_outside_temp_buf())
    pos= strmov(pos, "LOCAL ");
  pos= strmov(pos, "INFILE '");
2429
  memcpy(pos, fname, fname_len);
unknown's avatar
unknown committed
2430
  pos= strmov(pos+fname_len, "' ");
2431

unknown's avatar
unknown committed
2432
  if (sql_ex.opt_flags & REPLACE_FLAG)
2433
    pos= strmov(pos, " REPLACE ");
unknown's avatar
unknown committed
2434
  else if (sql_ex.opt_flags & IGNORE_FLAG)
2435 2436
    pos= strmov(pos, " IGNORE ");

unknown's avatar
unknown committed
2437 2438 2439 2440 2441 2442
  pos= strmov(pos ,"INTO");

  if (fn_end)
    *fn_end= pos;

  pos= strmov(pos ," TABLE `");
2443 2444 2445
  memcpy(pos, table_name, table_name_len);
  pos+= table_name_len;

unknown's avatar
unknown committed
2446
  /* We have to create all optinal fields as the default is not empty */
2447
  pos= strmov(pos, "` FIELDS TERMINATED BY ");
unknown's avatar
unknown committed
2448 2449 2450 2451 2452
  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);
2453

unknown's avatar
unknown committed
2454 2455
  pos= strmov(pos, " ESCAPED BY ");
  pos= pretty_print_str(pos, sql_ex.escaped, sql_ex.escaped_len);
2456

unknown's avatar
unknown committed
2457 2458
  pos= strmov(pos, " LINES TERMINATED BY ");
  pos= pretty_print_str(pos, sql_ex.line_term, sql_ex.line_term_len);
2459 2460
  if (sql_ex.line_start_len)
  {
2461
    pos= strmov(pos, " STARTING BY ");
2462
    pos= pretty_print_str(pos, sql_ex.line_start, sql_ex.line_start_len);
2463
  }
2464

unknown's avatar
unknown committed
2465
  if ((long) skip_lines > 0)
2466 2467
  {
    pos= strmov(pos, " IGNORE ");
unknown's avatar
unknown committed
2468
    pos= longlong10_to_str((longlong) skip_lines, pos, 10);
2469 2470
    pos= strmov(pos," LINES ");    
  }
2471 2472 2473 2474

  if (num_fields)
  {
    uint i;
unknown's avatar
unknown committed
2475
    const char *field= fields;
2476
    pos= strmov(pos, " (");
2477 2478 2479
    for (i = 0; i < num_fields; i++)
    {
      if (i)
unknown's avatar
unknown committed
2480 2481 2482 2483
      {
        *pos++= ' ';
        *pos++= ',';
      }
2484
      memcpy(pos, field, field_lens[i]);
unknown's avatar
unknown committed
2485 2486
      pos+=   field_lens[i];
      field+= field_lens[i]  + 1;
2487
    }
2488
    *pos++= ')';
2489
  }
2490

unknown's avatar
unknown committed
2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502
  *end= pos;
}


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

  if (!(buf= my_malloc(get_query_buffer_length(), MYF(MY_WME))))
    return;
  print_query(TRUE, buf, &end, 0, 0);
  protocol->store(buf, end-buf, &my_charset_bin);
unknown's avatar
unknown committed
2503
  my_free(buf, MYF(0));
2504
}
unknown's avatar
unknown committed
2505
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
2506

2507

2508 2509
#ifndef MYSQL_CLIENT

unknown's avatar
unknown committed
2510
/*
2511
  Load_log_event::write_data_header()
unknown's avatar
unknown committed
2512
*/
2513

2514
bool Load_log_event::write_data_header(IO_CACHE* file)
2515
{
2516
  char buf[LOAD_HEADER_LEN];
unknown's avatar
unknown committed
2517
  int4store(buf + L_THREAD_ID_OFFSET, slave_proxy_id);
2518 2519 2520 2521 2522
  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);
2523
  return my_b_safe_write(file, (byte*)buf, LOAD_HEADER_LEN) != 0;
2524
}
2525

2526

unknown's avatar
unknown committed
2527
/*
2528
  Load_log_event::write_data_body()
unknown's avatar
unknown committed
2529
*/
2530

2531
bool Load_log_event::write_data_body(IO_CACHE* file)
2532
{
2533 2534 2535
  if (sql_ex.write_data(file))
    return 1;
  if (num_fields && fields && field_lens)
2536
  {
2537 2538 2539
    if (my_b_safe_write(file, (byte*)field_lens, num_fields) ||
	my_b_safe_write(file, (byte*)fields, field_block_len))
      return 1;
2540
  }
2541 2542 2543
  return (my_b_safe_write(file, (byte*)table_name, table_name_len + 1) ||
	  my_b_safe_write(file, (byte*)db, db_len + 1) ||
	  my_b_safe_write(file, (byte*)fname, fname_len));
2544 2545
}

2546

unknown's avatar
unknown committed
2547
/*
2548
  Load_log_event::Load_log_event()
unknown's avatar
unknown committed
2549
*/
2550

unknown's avatar
unknown committed
2551 2552 2553
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,
unknown's avatar
unknown committed
2554
			       enum enum_duplicates handle_dup,
2555
			       bool ignore, bool using_trans)
2556 2557 2558
  :Log_event(thd_arg, !thd_arg->tmp_table_used ?
	     0 : LOG_EVENT_THREAD_SPECIFIC_F, using_trans),
   thread_id(thd_arg->thread_id),
2559
   slave_proxy_id(thd_arg->variables.pseudo_thread_id),
unknown's avatar
unknown committed
2560 2561
   num_fields(0),fields(0),
   field_lens(0),field_block_len(0),
unknown's avatar
unknown committed
2562
   table_name(table_name_arg ? table_name_arg : ""),
2563
   db(db_arg), fname(ex->file_name), local_fname(FALSE)
unknown's avatar
unknown committed
2564 2565 2566
{
  time_t end_time;
  time(&end_time);
2567
  exec_time = (ulong) (end_time  - thd_arg->start_time);
2568 2569 2570
  /* db can never be a zero pointer in 4.0 */
  db_len = (uint32) strlen(db);
  table_name_len = (uint32) strlen(table_name);
unknown's avatar
unknown committed
2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583
  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;
2584
    
unknown's avatar
unknown committed
2585
  if (ex->dumpfile)
unknown's avatar
unknown committed
2586
    sql_ex.opt_flags|= DUMPFILE_FLAG;
unknown's avatar
unknown committed
2587
  if (ex->opt_enclosed)
unknown's avatar
unknown committed
2588
    sql_ex.opt_flags|= OPT_ENCLOSED_FLAG;
2589

unknown's avatar
unknown committed
2590
  sql_ex.empty_flags= 0;
2591

2592
  switch (handle_dup) {
unknown's avatar
unknown committed
2593
  case DUP_REPLACE:
unknown's avatar
unknown committed
2594
    sql_ex.opt_flags|= REPLACE_FLAG;
unknown's avatar
unknown committed
2595 2596 2597 2598
    break;
  case DUP_UPDATE:				// Impossible here
  case DUP_ERROR:
    break;	
unknown's avatar
unknown committed
2599
  }
2600 2601
  if (ignore)
    sql_ex.opt_flags|= IGNORE_FLAG;
2602

unknown's avatar
unknown committed
2603 2604 2605 2606 2607 2608 2609 2610 2611 2612
  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;
2613
    
unknown's avatar
unknown committed
2614
  skip_lines = ex->skip_lines;
2615

unknown's avatar
unknown committed
2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626
  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);
2627 2628
  }

unknown's avatar
unknown committed
2629 2630 2631
  field_lens = (const uchar*)field_lens_buf.ptr();
  fields = fields_buf.ptr();
}
unknown's avatar
unknown committed
2632
#endif /* !MYSQL_CLIENT */
2633

2634

2635
/*
2636
  Load_log_event::Load_log_event()
2637

unknown's avatar
unknown committed
2638 2639 2640
  NOTE
    The caller must do buf[event_len] = 0 before he starts using the
    constructed event.
2641 2642
*/

2643 2644 2645 2646
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),
unknown's avatar
unknown committed
2647
   table_name(0), db(0), fname(0), local_fname(FALSE)
unknown's avatar
unknown committed
2648
{
unknown's avatar
unknown committed
2649
  DBUG_ENTER("Load_log_event");
2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661
  /*
    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 */
unknown's avatar
unknown committed
2662
  DBUG_VOID_RETURN;
2663 2664
}

2665

unknown's avatar
unknown committed
2666
/*
2667
  Load_log_event::copy_log_event()
unknown's avatar
unknown committed
2668
*/
2669

2670
int Load_log_event::copy_log_event(const char *buf, ulong event_len,
2671 2672
                                   int body_offset,
                                   const Format_description_log_event *description_event)
2673
{
2674
  DBUG_ENTER("Load_log_event::copy_log_event");
2675
  uint data_len;
2676
  char* buf_end = (char*)buf + event_len;
2677 2678
  /* this is the beginning of the post-header */
  const char* data_head = buf + description_event->common_header_len;
unknown's avatar
unknown committed
2679
  slave_proxy_id= thread_id= uint4korr(data_head + L_THREAD_ID_OFFSET);
2680 2681 2682 2683 2684
  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);
unknown's avatar
unknown committed
2685
	  
unknown's avatar
unknown committed
2686
  if ((int) event_len < body_offset)
unknown's avatar
unknown committed
2687
    DBUG_RETURN(1);
2688 2689 2690 2691
  /*
    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.
  */
2692 2693 2694
  if (!(field_lens= (uchar*)sql_ex.init((char*)buf + body_offset,
                                        buf_end,
                                        buf[EVENT_TYPE_OFFSET] != LOAD_EVENT)))
unknown's avatar
unknown committed
2695
    DBUG_RETURN(1);
2696
  
2697
  data_len = event_len - body_offset;
2698
  if (num_fields > data_len) // simple sanity check against corruption
unknown's avatar
unknown committed
2699
    DBUG_RETURN(1);
2700
  for (uint i = 0; i < num_fields; i++)
2701
    field_block_len += (uint)field_lens[i] + 1;
2702

unknown's avatar
unknown committed
2703 2704 2705 2706
  fields = (char*)field_lens + num_fields;
  table_name  = fields + field_block_len;
  db = table_name + table_name_len + 1;
  fname = db + db_len + 1;
2707 2708
  fname_len = strlen(fname);
  // null termination is accomplished by the caller doing buf[event_len]=0
2709

unknown's avatar
unknown committed
2710
  DBUG_RETURN(0);
unknown's avatar
unknown committed
2711 2712 2713
}


unknown's avatar
unknown committed
2714
/*
2715
  Load_log_event::print()
unknown's avatar
unknown committed
2716
*/
2717 2718

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
2719
void Load_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
unknown's avatar
unknown committed
2720
{
unknown's avatar
unknown committed
2721
  print(file, print_event_info, 0);
unknown's avatar
unknown committed
2722 2723
}

unknown's avatar
unknown committed
2724

unknown's avatar
unknown committed
2725
void Load_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info,
unknown's avatar
unknown committed
2726
			   bool commented)
unknown's avatar
unknown committed
2727
{
unknown's avatar
unknown committed
2728
  DBUG_ENTER("Load_log_event::print");
unknown's avatar
unknown committed
2729
  if (!print_event_info->short_form)
unknown's avatar
unknown committed
2730
  {
unknown's avatar
unknown committed
2731
    print_header(file, print_event_info);
2732
    fprintf(file, "\tQuery\tthread_id=%ld\texec_time=%ld\n",
unknown's avatar
unknown committed
2733 2734 2735
	    thread_id, exec_time);
  }

2736
  bool different_db= 1;
2737
  if (db)
unknown's avatar
unknown committed
2738
  {
2739 2740 2741 2742 2743 2744
    /*
      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.
    */
unknown's avatar
unknown committed
2745
    if ((different_db= memcmp(print_event_info->db, db, db_len + 1)) &&
2746
        !commented)
unknown's avatar
unknown committed
2747
      memcpy(print_event_info->db, db, db_len + 1);
unknown's avatar
unknown committed
2748
  }
2749
  
2750
  if (db && db[0] && different_db)
unknown's avatar
unknown committed
2751 2752 2753
    fprintf(file, "%suse %s;\n", 
            commented ? "# " : "",
            db);
unknown's avatar
unknown committed
2754

2755 2756 2757
  if (flags & LOG_EVENT_THREAD_SPECIFIC_F)
    fprintf(file,"%sSET @@session.pseudo_thread_id=%lu;\n",
            commented ? "# " : "", (ulong)thread_id);
unknown's avatar
unknown committed
2758 2759
  fprintf(file, "%sLOAD DATA ",
          commented ? "# " : "");
2760 2761
  if (check_fname_outside_temp_buf())
    fprintf(file, "LOCAL ");
2762
  fprintf(file, "INFILE '%-*s' ", fname_len, fname);
unknown's avatar
unknown committed
2763

unknown's avatar
unknown committed
2764
  if (sql_ex.opt_flags & REPLACE_FLAG)
unknown's avatar
unknown committed
2765
    fprintf(file," REPLACE ");
unknown's avatar
unknown committed
2766
  else if (sql_ex.opt_flags & IGNORE_FLAG)
unknown's avatar
unknown committed
2767 2768
    fprintf(file," IGNORE ");
  
2769
  fprintf(file, "INTO TABLE `%s`", table_name);
unknown's avatar
unknown committed
2770 2771
  fprintf(file, " FIELDS TERMINATED BY ");
  pretty_print_str(file, sql_ex.field_term, sql_ex.field_term_len);
unknown's avatar
unknown committed
2772

unknown's avatar
unknown committed
2773 2774 2775 2776
  if (sql_ex.opt_flags & OPT_ENCLOSED_FLAG)
    fprintf(file," OPTIONALLY ");
  fprintf(file, " ENCLOSED BY ");
  pretty_print_str(file, sql_ex.enclosed, sql_ex.enclosed_len);
unknown's avatar
unknown committed
2777
     
unknown's avatar
unknown committed
2778 2779
  fprintf(file, " ESCAPED BY ");
  pretty_print_str(file, sql_ex.escaped, sql_ex.escaped_len);
unknown's avatar
unknown committed
2780
     
unknown's avatar
unknown committed
2781 2782 2783
  fprintf(file," LINES TERMINATED BY ");
  pretty_print_str(file, sql_ex.line_term, sql_ex.line_term_len);

unknown's avatar
unknown committed
2784

2785
  if (sql_ex.line_start)
unknown's avatar
unknown committed
2786
  {
2787
    fprintf(file," STARTING BY ");
2788
    pretty_print_str(file, sql_ex.line_start, sql_ex.line_start_len);
unknown's avatar
unknown committed
2789
  }
2790 2791
  if ((long) skip_lines > 0)
    fprintf(file, " IGNORE %ld LINES", (long) skip_lines);
unknown's avatar
unknown committed
2792

2793 2794 2795 2796
  if (num_fields)
  {
    uint i;
    const char* field = fields;
2797 2798
    fprintf(file, " (");
    for (i = 0; i < num_fields; i++)
unknown's avatar
unknown committed
2799
    {
unknown's avatar
unknown committed
2800
      if (i)
2801 2802
	fputc(',', file);
      fprintf(file, field);
unknown's avatar
unknown committed
2803
	  
2804
      field += field_lens[i]  + 1;
unknown's avatar
unknown committed
2805
    }
2806 2807
    fputc(')', file);
  }
unknown's avatar
unknown committed
2808 2809

  fprintf(file, ";\n");
unknown's avatar
unknown committed
2810
  DBUG_VOID_RETURN;
unknown's avatar
unknown committed
2811
}
unknown's avatar
unknown committed
2812
#endif /* MYSQL_CLIENT */
2813

2814

unknown's avatar
unknown committed
2815
/*
2816
  Load_log_event::set_fields()
unknown's avatar
unknown committed
2817 2818 2819 2820 2821

  Note that 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.
unknown's avatar
unknown committed
2822
*/
2823

2824
#ifndef MYSQL_CLIENT
unknown's avatar
unknown committed
2825
void Load_log_event::set_fields(const char* affected_db, 
2826 2827
				List<Item> &field_list,
                                Name_resolution_context *context)
unknown's avatar
unknown committed
2828 2829
{
  uint i;
unknown's avatar
unknown committed
2830
  const char* field = fields;
2831
  for (i= 0; i < num_fields; i++)
unknown's avatar
unknown committed
2832
  {
2833 2834
    field_list.push_back(new Item_field(context,
                                        affected_db, table_name, field));
2835
    field+= field_lens[i]  + 1;
unknown's avatar
unknown committed
2836
  }
unknown's avatar
unknown committed
2837
}
unknown's avatar
unknown committed
2838
#endif /* !MYSQL_CLIENT */
unknown's avatar
unknown committed
2839 2840


unknown's avatar
SCRUM  
unknown committed
2841
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
unknown's avatar
unknown committed
2842 2843
/*
  Does the data loading job when executing a LOAD DATA on the slave
2844

unknown's avatar
unknown committed
2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858
  SYNOPSIS
    Load_log_event::exec_event
      net  
      rli                             
      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.
2859

unknown's avatar
unknown committed
2860 2861 2862 2863 2864 2865 2866
  DESCRIPTION
    Does the data loading job when executing a LOAD DATA on the slave
 
  RETURN VALUE
    0           Success                                                 
    1    	Failure
*/
2867

unknown's avatar
unknown committed
2868 2869
int Load_log_event::exec_event(NET* net, struct st_relay_log_info* rli, 
			       bool use_rli_only_for_errors)
2870
{
2871
  thd->db_length= db_len;
2872
  thd->db= (char *) rpl_filter->get_rewrite_db(db, &thd->db_length);
2873
  DBUG_ASSERT(thd->query == 0);
unknown's avatar
unknown committed
2874
  thd->query_length= 0;                         // Should not be needed
unknown's avatar
unknown committed
2875
  thd->query_error= 0;
unknown's avatar
unknown committed
2876
  clear_all_errors(thd, rli);
2877 2878 2879

  /* see Query_log_event::exec_event() and BUG#13360 */
  DBUG_ASSERT(!rli->m_table_map.count());
2880 2881 2882 2883
  /*
    Usually mysql_init_query() is called by mysql_parse(), but we need it here
    as the present method does not call mysql_parse().
  */
unknown's avatar
unknown committed
2884
  mysql_init_query(thd, 0, 0);
unknown's avatar
unknown committed
2885
  if (!use_rli_only_for_errors)
2886
  {
2887
    /* Saved for InnoDB, see comment in Query_log_event::exec_event() */
unknown's avatar
unknown committed
2888
    rli->future_group_master_log_pos= log_pos;
2889
    DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));
2890
  }
2891 2892
 
   /*
unknown's avatar
unknown committed
2893 2894 2895 2896 2897 2898 2899 2900 2901 2902
    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 done by testing rules in
    Create_file_log_event::exec_event() 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).
unknown's avatar
unknown committed
2903 2904 2905 2906 2907 2908 2909 2910 2911 2912


    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
            ::exec_event(), then the companion SET also have so we
            don't need to reset_one_shot_variables().
unknown's avatar
unknown committed
2913
  */
2914
  if (rpl_filter->db_ok(thd->db))
2915
  {
2916 2917
    thd->set_time((time_t)when);
    VOID(pthread_mutex_lock(&LOCK_thread_count));
2918
    thd->query_id = next_query_id();
2919
    VOID(pthread_mutex_unlock(&LOCK_thread_count));
2920 2921 2922 2923 2924 2925
    /*
      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.
    */
unknown's avatar
unknown committed
2926
    mysql_reset_errors(thd, 0);
2927 2928 2929 2930

    TABLE_LIST tables;
    bzero((char*) &tables,sizeof(tables));
    tables.db = thd->db;
2931
    tables.alias = tables.table_name = (char*) table_name;
2932
    tables.lock_type = TL_WRITE;
unknown's avatar
unknown committed
2933
    tables.updating= 1;
unknown's avatar
unknown committed
2934

2935
    // the table will be opened in mysql_load    
2936
    if (rpl_filter->is_on() && !rpl_filter->tables_ok(thd->db, &tables))
2937 2938 2939 2940 2941 2942 2943 2944
    {
      // 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];
unknown's avatar
unknown committed
2945
      char *end;
unknown's avatar
unknown committed
2946
      enum enum_duplicates handle_dup;
2947
      bool ignore= 0;
unknown's avatar
unknown committed
2948 2949
      char *load_data_query;

unknown's avatar
unknown committed
2950
      /*
unknown's avatar
unknown committed
2951 2952
        Forge LOAD DATA INFILE query which will be used in SHOW PROCESS LIST
        and written to slave's binlog if binlogging is on.
unknown's avatar
unknown committed
2953
      */
unknown's avatar
unknown committed
2954
      if (!(load_data_query= (char *)thd->alloc(get_query_buffer_length() + 1)))
unknown's avatar
unknown committed
2955
      {
unknown's avatar
unknown committed
2956 2957 2958 2959 2960
        /*
          This will set thd->fatal_error in case of OOM. So we surely will notice
          that something is wrong.
        */
        goto error;
unknown's avatar
unknown committed
2961
      }
unknown's avatar
unknown committed
2962 2963 2964 2965 2966 2967 2968

      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;

unknown's avatar
unknown committed
2969
      if (sql_ex.opt_flags & REPLACE_FLAG)
2970
      {
unknown's avatar
unknown committed
2971
	handle_dup= DUP_REPLACE;
2972
      }
unknown's avatar
unknown committed
2973
      else if (sql_ex.opt_flags & IGNORE_FLAG)
2974 2975 2976 2977
      {
        ignore= 1;
        handle_dup= DUP_ERROR;
      }
unknown's avatar
unknown committed
2978
      else
unknown's avatar
unknown committed
2979
      {
unknown's avatar
unknown committed
2980
        /*
unknown's avatar
unknown committed
2981
	  When replication is running fine, if it was DUP_ERROR on the
2982
          master then we could choose IGNORE here, because if DUP_ERROR
unknown's avatar
unknown committed
2983
          suceeded on master, and data is identical on the master and slave,
2984
          then there should be no uniqueness errors on slave, so IGNORE is
unknown's avatar
unknown committed
2985
          the same as DUP_ERROR. But in the unlikely case of uniqueness errors
unknown's avatar
unknown committed
2986 2987 2988
          (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.
unknown's avatar
unknown committed
2989 2990

          If reading from net (a 3.23 master), mysql_load() will change this
2991
          to IGNORE.
unknown's avatar
unknown committed
2992 2993
        */
        handle_dup= DUP_ERROR;
unknown's avatar
unknown committed
2994
      }
2995 2996 2997 2998 2999 3000 3001 3002 3003 3004
      /*
        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;
unknown's avatar
unknown committed
3005

unknown's avatar
unknown committed
3006
      sql_exchange ex((char*)fname, sql_ex.opt_flags & DUMPFILE_FLAG);
3007 3008 3009 3010 3011
      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);
unknown's avatar
unknown committed
3012 3013 3014 3015 3016
      ex.field_term= &field_term;
      ex.enclosed= &enclosed;
      ex.line_term= &line_term;
      ex.line_start= &line_start;
      ex.escaped= &escaped;
3017 3018 3019 3020 3021 3022

      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;
unknown's avatar
unknown committed
3023
      List<Item> field_list;
3024 3025
      thd->main_lex.select_lex.context.resolve_in_table_list_only(&tables);
      set_fields(thd->db, field_list, &thd->main_lex.select_lex.context);
unknown's avatar
unknown committed
3026
      thd->variables.pseudo_thread_id= thread_id;
unknown's avatar
unknown committed
3027
      List<Item> set_fields;
3028 3029 3030 3031 3032 3033 3034 3035 3036
      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;
      }
unknown's avatar
unknown committed
3037 3038 3039 3040 3041
      /*
        It is safe to use set_fields twice because we are not going to
        update it inside mysql_load().
      */
      if (mysql_load(thd, &ex, &tables, field_list, set_fields, set_fields,
3042
                     handle_dup, ignore, net != 0))
unknown's avatar
unknown committed
3043
        thd->query_error= 1;
3044
      if (thd->cuted_fields)
unknown's avatar
unknown committed
3045
      {
unknown's avatar
unknown committed
3046
	/* log_pos is the position of the LOAD event in the master log */
unknown's avatar
unknown committed
3047 3048 3049 3050 3051 3052 3053
        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));
unknown's avatar
unknown committed
3054
      }
3055 3056 3057
      if (net)
        net->pkt_nr= thd->net.pkt_nr;
    }
3058 3059
  }
  else
3060 3061 3062 3063 3064 3065 3066 3067 3068
  {
    /*
      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);
  }
unknown's avatar
unknown committed
3069 3070

error:
3071
  thd->net.vio = 0; 
3072
  char *save_db= thd->db;
unknown's avatar
unknown committed
3073
  VOID(pthread_mutex_lock(&LOCK_thread_count));
3074
  thd->db= thd->catalog= 0;
unknown's avatar
unknown committed
3075
  thd->query= 0;
unknown's avatar
unknown committed
3076
  thd->query_length= thd->db_length= 0;
unknown's avatar
unknown committed
3077
  VOID(pthread_mutex_unlock(&LOCK_thread_count));
3078 3079 3080
  close_thread_tables(thd);
  if (thd->query_error)
  {
3081
    /* this err/sql_errno code is copy-paste from net_send_error() */
unknown's avatar
unknown committed
3082 3083 3084 3085 3086 3087 3088 3089 3090
    const char *err;
    int sql_errno;
    if ((err=thd->net.last_error)[0])
      sql_errno=thd->net.last_errno;
    else
    {
      sql_errno=ER_UNKNOWN_ERROR;
      err=ER(sql_errno);       
    }
3091
    slave_print_msg(ERROR_LEVEL, rli, sql_errno,"\
unknown's avatar
unknown committed
3092
Error '%s' running LOAD DATA INFILE on table '%s'. Default database: '%s'",
3093
                    err, (char*)table_name, print_slave_db_safe(save_db));
unknown's avatar
unknown committed
3094
    free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
3095 3096
    return 1;
  }
unknown's avatar
unknown committed
3097
  free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
3098
	    
3099
  if (thd->is_fatal_error)
3100
  {
3101
    slave_print_msg(ERROR_LEVEL, rli, ER_UNKNOWN_ERROR, "\
unknown's avatar
unknown committed
3102
Fatal error running LOAD DATA INFILE on table '%s'. Default database: '%s'",
3103
                    (char*)table_name, print_slave_db_safe(save_db));
3104 3105 3106
    return 1;
  }

unknown's avatar
unknown committed
3107
  return ( use_rli_only_for_errors ? 0 : Log_event::exec_event(rli) ); 
3108
}
unknown's avatar
SCRUM  
unknown committed
3109
#endif
3110 3111


unknown's avatar
unknown committed
3112
/**************************************************************************
unknown's avatar
unknown committed
3113
  Rotate_log_event methods
unknown's avatar
unknown committed
3114
**************************************************************************/
3115

unknown's avatar
unknown committed
3116
/*
3117
  Rotate_log_event::pack_info()
unknown's avatar
unknown committed
3118
*/
3119

unknown's avatar
SCRUM  
unknown committed
3120
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3121
void Rotate_log_event::pack_info(Protocol *protocol)
3122
{
unknown's avatar
unknown committed
3123
  char buf1[256], buf[22];
unknown's avatar
unknown committed
3124
  String tmp(buf1, sizeof(buf1), log_cs);
3125
  tmp.length(0);
unknown's avatar
unknown committed
3126
  tmp.append(new_log_ident, ident_len);
3127
  tmp.append(STRING_WITH_LEN(";pos="));
unknown's avatar
unknown committed
3128 3129
  tmp.append(llstr(pos,buf));
  protocol->store(tmp.ptr(), tmp.length(), &my_charset_bin);
3130
}
unknown's avatar
SCRUM  
unknown committed
3131
#endif
3132

3133

unknown's avatar
unknown committed
3134
/*
3135
  Rotate_log_event::print()
unknown's avatar
unknown committed
3136
*/
3137 3138

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
3139
void Rotate_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3140
{
3141
  char buf[22];
3142

unknown's avatar
unknown committed
3143
  if (print_event_info->short_form)
3144
    return;
unknown's avatar
unknown committed
3145
  print_header(file, print_event_info);
3146 3147 3148
  fprintf(file, "\tRotate to ");
  if (new_log_ident)
    my_fwrite(file, (byte*) new_log_ident, (uint)ident_len, 
3149
              MYF(MY_NABP | MY_WME));
3150
  fprintf(file, "  pos: %s", llstr(pos, buf));
3151
  fputc('\n', file);
3152
  fflush(file);
3153
}
unknown's avatar
unknown committed
3154
#endif /* MYSQL_CLIENT */
3155 3156


3157

unknown's avatar
unknown committed
3158
/*
3159
  Rotate_log_event::Rotate_log_event() (2 constructors)
unknown's avatar
unknown committed
3160
*/
3161

3162 3163

#ifndef MYSQL_CLIENT
3164
Rotate_log_event::Rotate_log_event(const char* new_log_ident_arg,
3165 3166 3167 3168 3169 3170 3171 3172
                                   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];
3173
  DBUG_ENTER("Rotate_log_event::Rotate_log_event(...,flags)");
3174 3175 3176 3177
  DBUG_PRINT("enter",("new_log_ident %s pos %s flags %lu", new_log_ident_arg,
                      llstr(pos_arg, buff), flags));
#endif
  if (flags & DUP_NAME)
3178
    new_log_ident= my_strndup((const byte*) new_log_ident_arg,
unknown's avatar
unknown committed
3179
                                         ident_len, MYF(MY_WME));
3180 3181 3182 3183 3184
  DBUG_VOID_RETURN;
}
#endif


3185 3186
Rotate_log_event::Rotate_log_event(const char* buf, uint event_len,
                                   const Format_description_log_event* description_event)
unknown's avatar
unknown committed
3187
  :Log_event(buf, description_event) ,new_log_ident(0), flags(DUP_NAME)
3188
{
3189
  DBUG_ENTER("Rotate_log_event::Rotate_log_event(char*,...)");
3190
  // The caller will ensure that event_len is what we have at EVENT_LEN_OFFSET
3191 3192
  uint8 header_size= description_event->common_header_len;
  uint8 post_header_len= description_event->post_header_len[ROTATE_EVENT-1];
3193 3194
  uint ident_offset;
  if (event_len < header_size)
unknown's avatar
unknown committed
3195
    DBUG_VOID_RETURN;
3196
  buf += header_size;
3197 3198 3199 3200
  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; 
3201
  set_if_smaller(ident_len,FN_REFLEN-1);
3202
  new_log_ident= my_strndup((byte*) buf + ident_offset,
3203 3204
                                       (uint) ident_len,
                                       MYF(MY_WME));
unknown's avatar
unknown committed
3205
  DBUG_VOID_RETURN;
3206
}
3207 3208


unknown's avatar
unknown committed
3209
/*
3210
  Rotate_log_event::write()
unknown's avatar
unknown committed
3211
*/
3212

3213
#ifndef MYSQL_CLIENT
3214
bool Rotate_log_event::write(IO_CACHE* file)
3215
{
3216
  char buf[ROTATE_HEADER_LEN];
unknown's avatar
unknown committed
3217
  int8store(buf + R_POS_OFFSET, pos);
3218 3219 3220
  return (write_header(file, ROTATE_HEADER_LEN + ident_len) ||
          my_b_safe_write(file, (byte*)buf, ROTATE_HEADER_LEN) ||
          my_b_safe_write(file, (byte*)new_log_ident, (uint) ident_len));
3221
}
3222
#endif
3223

unknown's avatar
unknown committed
3224
/*
3225 3226
  Rotate_log_event::exec_event()

3227
  Got a rotate log event from the master
3228

3229 3230 3231
  IMPLEMENTATION
    This is mainly used so that we can later figure out the logname and
    position for the master.
3232

3233
    We can't rotate the slave's BINlog as this will cause infinitive rotations
3234
    in a A -> B -> A setup.
3235
    The NOTES below is a wrong comment which will disappear when 4.1 is merged.
3236 3237 3238

  RETURN VALUES
    0	ok
unknown's avatar
unknown committed
3239
*/
3240

unknown's avatar
SCRUM  
unknown committed
3241
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3242
int Rotate_log_event::exec_event(struct st_relay_log_info* rli)
3243
{
3244 3245 3246
  DBUG_ENTER("Rotate_log_event::exec_event");

  pthread_mutex_lock(&rli->data_lock);
3247
  rli->event_relay_log_pos= my_b_tell(rli->cur_log);
unknown's avatar
unknown committed
3248 3249 3250 3251 3252 3253 3254 3255 3256
  /*
    If we are in a transaction: 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:
    BEGIN
    ...
    ROTATE (a fake one)
    ...
    COMMIT or ROLLBACK
unknown's avatar
unknown committed
3257 3258
    In that case, we don't want to touch the coordinates which correspond to
    the beginning of the transaction.
3259 3260
    Starting from 5.0.0, there also are some rotates from the slave itself, in
    the relay log.
unknown's avatar
unknown committed
3261
  */
unknown's avatar
unknown committed
3262
  if (!(thd->options & OPTION_BEGIN))
unknown's avatar
unknown committed
3263
  {
unknown's avatar
unknown committed
3264 3265
    memcpy(rli->group_master_log_name, new_log_ident, ident_len+1);
    rli->notify_group_master_log_name_update();
3266 3267 3268 3269 3270
    rli->group_master_log_pos= pos;
    rli->group_relay_log_pos= rli->event_relay_log_pos;
    DBUG_PRINT("info", ("group_master_log_name: '%s' group_master_log_pos:\
%lu",
                        rli->group_master_log_name,
unknown's avatar
unknown committed
3271
                        (ulong) rli->group_master_log_pos));
3272
    /*
3273 3274
      Reset thd->options and sql_mode etc, because this could be the signal of
      a master's downgrade from 5.0 to 4.0.
3275 3276 3277 3278 3279
      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);
3280
    set_slave_thread_default_charset(thd, rli);
3281
    thd->variables.sql_mode= global_system_variables.sql_mode;
3282 3283
    thd->variables.auto_increment_increment=
      thd->variables.auto_increment_offset= 1;
unknown's avatar
unknown committed
3284
  }
3285 3286 3287 3288
  pthread_mutex_unlock(&rli->data_lock);
  pthread_cond_broadcast(&rli->data_cond);
  flush_relay_log_info(rli);
  DBUG_RETURN(0);
3289
}
unknown's avatar
SCRUM  
unknown committed
3290
#endif
3291 3292


unknown's avatar
unknown committed
3293
/**************************************************************************
unknown's avatar
unknown committed
3294
	Intvar_log_event methods
unknown's avatar
unknown committed
3295
**************************************************************************/
3296

unknown's avatar
unknown committed
3297
/*
3298
  Intvar_log_event::pack_info()
unknown's avatar
unknown committed
3299
*/
3300

unknown's avatar
SCRUM  
unknown committed
3301
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3302
void Intvar_log_event::pack_info(Protocol *protocol)
3303
{
unknown's avatar
unknown committed
3304 3305
  char buf[256], *pos;
  pos= strmake(buf, get_var_type_name(), sizeof(buf)-23);
unknown's avatar
unknown committed
3306
  *pos++= '=';
unknown's avatar
unknown committed
3307
  pos= longlong10_to_str(val, pos, -10);
unknown's avatar
unknown committed
3308
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
3309
}
unknown's avatar
SCRUM  
unknown committed
3310
#endif
3311

unknown's avatar
unknown committed
3312

unknown's avatar
unknown committed
3313
/*
3314
  Intvar_log_event::Intvar_log_event()
unknown's avatar
unknown committed
3315
*/
3316

3317 3318 3319
Intvar_log_event::Intvar_log_event(const char* buf,
                                   const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
3320
{
3321 3322 3323
  buf+= description_event->common_header_len;
  type= buf[I_TYPE_OFFSET];
  val= uint8korr(buf+I_VAL_OFFSET);
3324 3325
}

3326

unknown's avatar
unknown committed
3327
/*
3328
  Intvar_log_event::get_var_type_name()
unknown's avatar
unknown committed
3329
*/
3330 3331

const char* Intvar_log_event::get_var_type_name()
3332
{
3333 3334 3335 3336 3337
  switch(type) {
  case LAST_INSERT_ID_EVENT: return "LAST_INSERT_ID";
  case INSERT_ID_EVENT: return "INSERT_ID";
  default: /* impossible */ return "UNKNOWN";
  }
3338 3339
}

unknown's avatar
unknown committed
3340

unknown's avatar
unknown committed
3341
/*
3342
  Intvar_log_event::write()
unknown's avatar
unknown committed
3343
*/
3344

3345
#ifndef MYSQL_CLIENT
3346
bool Intvar_log_event::write(IO_CACHE* file)
3347
{
3348 3349
  byte buf[9];
  buf[I_TYPE_OFFSET]= (byte) type;
3350
  int8store(buf + I_VAL_OFFSET, val);
3351 3352
  return (write_header(file, sizeof(buf)) ||
          my_b_safe_write(file, buf, sizeof(buf)));
3353
}
3354
#endif
3355

3356

unknown's avatar
unknown committed
3357
/*
3358
  Intvar_log_event::print()
unknown's avatar
unknown committed
3359
*/
3360 3361

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
3362
void Intvar_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3363
{
3364 3365 3366
  char llbuff[22];
  const char *msg;
  LINT_INIT(msg);
3367

unknown's avatar
unknown committed
3368
  if (!print_event_info->short_form)
3369
  {
unknown's avatar
unknown committed
3370
    print_header(file, print_event_info);
3371 3372
    fprintf(file, "\tIntvar\n");
  }
3373

3374 3375 3376 3377 3378 3379 3380 3381
  fprintf(file, "SET ");
  switch (type) {
  case LAST_INSERT_ID_EVENT:
    msg="LAST_INSERT_ID";
    break;
  case INSERT_ID_EVENT:
    msg="INSERT_ID";
    break;
3382 3383 3384 3385
  case INVALID_INT_EVENT:
  default: // cannot happen
    msg="INVALID_INT";
    break;
3386 3387 3388
  }
  fprintf(file, "%s=%s;\n", msg, llstr(val,llbuff));
  fflush(file);
3389
}
3390
#endif
3391

3392

unknown's avatar
unknown committed
3393
/*
3394
  Intvar_log_event::exec_event()
unknown's avatar
unknown committed
3395
*/
3396

unknown's avatar
SCRUM  
unknown committed
3397
#if defined(HAVE_REPLICATION)&& !defined(MYSQL_CLIENT)
3398
int Intvar_log_event::exec_event(struct st_relay_log_info* rli)
3399
{
3400 3401 3402 3403 3404 3405 3406 3407 3408
  switch (type) {
  case LAST_INSERT_ID_EVENT:
    thd->last_insert_id_used = 1;
    thd->last_insert_id = val;
    break;
  case INSERT_ID_EVENT:
    thd->next_insert_id = val;
    break;
  }
3409
  rli->inc_event_relay_log_pos();
3410
  return 0;
3411
}
unknown's avatar
SCRUM  
unknown committed
3412
#endif
3413

3414

unknown's avatar
unknown committed
3415
/**************************************************************************
3416
  Rand_log_event methods
unknown's avatar
unknown committed
3417
**************************************************************************/
3418

unknown's avatar
SCRUM  
unknown committed
3419
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3420
void Rand_log_event::pack_info(Protocol *protocol)
3421
{
unknown's avatar
unknown committed
3422 3423 3424 3425 3426
  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);
3427
  protocol->store(buf1, (uint) (pos-buf1), &my_charset_bin);
3428
}
unknown's avatar
SCRUM  
unknown committed
3429
#endif
3430 3431


3432 3433 3434
Rand_log_event::Rand_log_event(const char* buf,
                               const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
3435
{
3436 3437 3438
  buf+= description_event->common_header_len;
  seed1= uint8korr(buf+RAND_SEED1_OFFSET);
  seed2= uint8korr(buf+RAND_SEED2_OFFSET);
3439 3440
}

3441

3442
#ifndef MYSQL_CLIENT
3443
bool Rand_log_event::write(IO_CACHE* file)
3444
{
3445
  byte buf[16];
3446 3447
  int8store(buf + RAND_SEED1_OFFSET, seed1);
  int8store(buf + RAND_SEED2_OFFSET, seed2);
3448 3449
  return (write_header(file, sizeof(buf)) ||
          my_b_safe_write(file, buf, sizeof(buf)));
3450
}
3451
#endif
3452

3453 3454

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
3455
void Rand_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3456
{
unknown's avatar
unknown committed
3457
  char llbuff[22],llbuff2[22];
unknown's avatar
unknown committed
3458
  if (!print_event_info->short_form)
3459
  {
unknown's avatar
unknown committed
3460
    print_header(file, print_event_info);
3461
    fprintf(file, "\tRand\n");
3462
  }
unknown's avatar
unknown committed
3463
  fprintf(file, "SET @@RAND_SEED1=%s, @@RAND_SEED2=%s;\n",
unknown's avatar
unknown committed
3464
	  llstr(seed1, llbuff),llstr(seed2, llbuff2));
3465
  fflush(file);
3466
}
unknown's avatar
unknown committed
3467
#endif /* MYSQL_CLIENT */
3468

3469

unknown's avatar
SCRUM  
unknown committed
3470
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3471
int Rand_log_event::exec_event(struct st_relay_log_info* rli)
3472
{
unknown's avatar
unknown committed
3473 3474
  thd->rand.seed1= (ulong) seed1;
  thd->rand.seed2= (ulong) seed2;
3475
  rli->inc_event_relay_log_pos();
3476 3477
  return 0;
}
unknown's avatar
unknown committed
3478
#endif /* !MYSQL_CLIENT */
3479

unknown's avatar
unknown committed
3480

3481 3482 3483 3484
/**************************************************************************
  Xid_log_event methods
**************************************************************************/

3485 3486 3487 3488 3489 3490 3491 3492 3493
#if !defined(DBUG_OFF) && !defined(MYSQL_CLIENT)
/*
  This static class member could be removed when mysqltest is made to support
  a --replace-regex command: then tests which have XIDs in their output can
  use this command to suppress non-deterministic XID values.
*/
my_bool Xid_log_event::show_xid;
#endif

3494 3495 3496
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
void Xid_log_event::pack_info(Protocol *protocol)
{
3497 3498
  char buf[128], *pos;
  pos= strmov(buf, "COMMIT /* xid=");
3499 3500 3501 3502
#if !defined(DBUG_OFF) && !defined(MYSQL_CLIENT)
  if (show_xid)
#endif
    pos= longlong10_to_str(xid, pos, 10);
3503
  pos= strmov(pos, " */");
3504 3505 3506 3507
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
}
#endif

unknown's avatar
unknown committed
3508 3509 3510 3511 3512 3513 3514 3515
/*
  NOTE it's ok not to use int8store here,
  as long as xid_t::set(ulonglong) and
  xid_t::get_my_xid doesn't do it either

  we don't care about actual values of xids as long as
  identical numbers compare identically
*/
3516 3517 3518 3519

Xid_log_event::
Xid_log_event(const char* buf,
              const Format_description_log_event *description_event)
3520 3521 3522
  :Log_event(buf, description_event)
{
  buf+= description_event->common_header_len;
3523
  memcpy((char*) &xid, buf, sizeof(xid));
3524 3525 3526
}


3527
#ifndef MYSQL_CLIENT
3528 3529 3530 3531 3532
bool Xid_log_event::write(IO_CACHE* file)
{
  return write_header(file, sizeof(xid)) ||
         my_b_safe_write(file, (byte*) &xid, sizeof(xid));
}
3533
#endif
3534 3535 3536


#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
3537
void Xid_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3538
{
unknown's avatar
unknown committed
3539
  if (!print_event_info->short_form)
3540
  {
unknown's avatar
unknown committed
3541 3542 3543
    char buf[64];
    longlong10_to_str(xid, buf, 10);

unknown's avatar
unknown committed
3544
    print_header(file, print_event_info);
unknown's avatar
unknown committed
3545 3546
    fprintf(file, "\tXid = %s\n", buf);
    fflush(file);
3547
  }
3548
  fprintf(file, "COMMIT;\n");
3549 3550 3551 3552 3553 3554 3555
}
#endif /* MYSQL_CLIENT */


#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
int Xid_log_event::exec_event(struct st_relay_log_info* rli)
{
3556
  /* For a slave Xid_log_event is COMMIT */
3557 3558
  general_log_print(thd, COM_QUERY,
                    "COMMIT /* implicit, from Xid_log_event */");
3559
  return end_trans(thd, COMMIT) || Log_event::exec_event(rli);
3560 3561 3562 3563
}
#endif /* !MYSQL_CLIENT */


unknown's avatar
unknown committed
3564
/**************************************************************************
3565
  User_var_log_event methods
unknown's avatar
unknown committed
3566
**************************************************************************/
unknown's avatar
unknown committed
3567

unknown's avatar
unknown committed
3568
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
unknown's avatar
unknown committed
3569 3570 3571
void User_var_log_event::pack_info(Protocol* protocol)
{
  char *buf= 0;
3572
  uint val_offset= 4 + name_len;
unknown's avatar
unknown committed
3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587
  uint event_len= val_offset;

  if (is_null)
  {
    buf= my_malloc(val_offset + 5, MYF(MY_WME));
    strmov(buf + val_offset, "NULL");
    event_len= val_offset + 4;
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      double real_val;
      float8get(real_val, val);
      buf= my_malloc(val_offset + FLOATING_POINT_BUFFER, MYF(MY_WME));
3588 3589
      event_len+= my_sprintf(buf + val_offset,
			     (buf + val_offset, "%.14g", real_val));
unknown's avatar
unknown committed
3590 3591 3592 3593 3594
      break;
    case INT_RESULT:
      buf= my_malloc(val_offset + 22, MYF(MY_WME));
      event_len= longlong10_to_str(uint8korr(val), buf + val_offset,-10)-buf;
      break;
unknown's avatar
unknown committed
3595 3596 3597 3598 3599 3600 3601 3602 3603 3604
    case DECIMAL_RESULT:
    {
      buf= my_malloc(val_offset + DECIMAL_MAX_STR_LENGTH, MYF(MY_WME));
      String str(buf+val_offset, DECIMAL_MAX_STR_LENGTH, &my_charset_bin);
      my_decimal dec;
      binary2my_decimal(E_DEC_FATAL_ERROR, val+2, &dec, val[0], val[1]);
      my_decimal2string(E_DEC_FATAL_ERROR, &dec, 0, 0, 0, &str);
      event_len= str.length() + val_offset;
      break;
    } 
unknown's avatar
unknown committed
3605
    case STRING_RESULT:
3606 3607 3608 3609 3610 3611 3612 3613 3614 3615
      /* 15 is for 'COLLATE' and other chars */
      buf= my_malloc(event_len+val_len*2+1+2*MY_CS_NAME_SIZE+15, MYF(MY_WME));
      CHARSET_INFO *cs;
      if (!(cs= get_charset(charset_number, MYF(0))))
      {
        strmov(buf+val_offset, "???");
        event_len+= 3;
      }
      else
      {
3616 3617 3618
        char *p= strxmov(buf + val_offset, "_", cs->csname, " ", NullS);
        p= str_to_hex(p, val, val_len);
        p= strxmov(p, " COLLATE ", cs->name, NullS);
3619 3620
        event_len= p-buf;
      }
unknown's avatar
unknown committed
3621
      break;
3622
    case ROW_RESULT:
unknown's avatar
unknown committed
3623
    default:
unknown's avatar
unknown committed
3624 3625 3626 3627 3628
      DBUG_ASSERT(1);
      return;
    }
  }
  buf[0]= '@';
3629 3630 3631 3632
  buf[1]= '`';
  buf[2+name_len]= '`';
  buf[3+name_len]= '=';
  memcpy(buf+2, name, name_len);
3633
  protocol->store(buf, event_len, &my_charset_bin);
unknown's avatar
unknown committed
3634 3635
  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
}
unknown's avatar
unknown committed
3636
#endif /* !MYSQL_CLIENT */
unknown's avatar
unknown committed
3637 3638


3639 3640 3641 3642
User_var_log_event::
User_var_log_event(const char* buf,
                   const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
unknown's avatar
unknown committed
3643
{
3644
  buf+= description_event->common_header_len;
unknown's avatar
unknown committed
3645 3646
  name_len= uint4korr(buf);
  name= (char *) buf + UV_NAME_LEN_SIZE;
3647 3648
  buf+= UV_NAME_LEN_SIZE + name_len;
  is_null= (bool) *buf;
unknown's avatar
unknown committed
3649 3650 3651
  if (is_null)
  {
    type= STRING_RESULT;
3652
    charset_number= my_charset_bin.number;
unknown's avatar
unknown committed
3653 3654 3655 3656 3657
    val_len= 0;
    val= 0;  
  }
  else
  {
3658 3659 3660
    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 + 
unknown's avatar
unknown committed
3661
		       UV_CHARSET_NUMBER_SIZE);
3662 3663
    val= (char *) (buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE +
		   UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE);
unknown's avatar
unknown committed
3664 3665 3666 3667
  }
}


3668
#ifndef MYSQL_CLIENT
3669
bool User_var_log_event::write(IO_CACHE* file)
unknown's avatar
unknown committed
3670 3671 3672 3673
{
  char buf[UV_NAME_LEN_SIZE];
  char buf1[UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE + 
	    UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE];
unknown's avatar
unknown committed
3674
  char buf2[max(8, DECIMAL_MAX_FIELD_SIZE + 2)], *pos= buf2;
3675
  uint buf1_length;
3676
  ulong event_length;
3677

unknown's avatar
unknown committed
3678
  int4store(buf, name_len);
3679 3680 3681 3682 3683 3684 3685
  
  if ((buf1[0]= is_null))
  {
    buf1_length= 1;
    val_len= 0;
  }    
  else
unknown's avatar
unknown committed
3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696
  {
    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;
unknown's avatar
unknown committed
3697 3698 3699 3700 3701 3702
    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;
3703
      decimal2bin((decimal_t*)val, buf2+2, buf2[0], buf2[1]);
unknown's avatar
unknown committed
3704 3705 3706
      val_len= decimal_bin_size(buf2[0], buf2[1]) + 2;
      break;
    }
unknown's avatar
unknown committed
3707 3708 3709
    case STRING_RESULT:
      pos= val;
      break;
3710
    case ROW_RESULT:
unknown's avatar
unknown committed
3711
    default:
unknown's avatar
unknown committed
3712 3713 3714
      DBUG_ASSERT(1);
      return 0;
    }
unknown's avatar
unknown committed
3715 3716
    int4store(buf1 + 2 + UV_CHARSET_NUMBER_SIZE, val_len);
    buf1_length= 10;
unknown's avatar
unknown committed
3717
  }
3718 3719 3720 3721 3722 3723

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

  return (write_header(file, event_length) ||
          my_b_safe_write(file, (byte*) buf, sizeof(buf))   ||
3724 3725 3726
	  my_b_safe_write(file, (byte*) name, name_len)     ||
	  my_b_safe_write(file, (byte*) buf1, buf1_length) ||
	  my_b_safe_write(file, (byte*) pos, val_len));
unknown's avatar
unknown committed
3727
}
3728
#endif
unknown's avatar
unknown committed
3729

3730

unknown's avatar
unknown committed
3731
/*
unknown's avatar
unknown committed
3732
  User_var_log_event::print()
unknown's avatar
unknown committed
3733
*/
unknown's avatar
unknown committed
3734 3735

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
3736
void User_var_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
unknown's avatar
unknown committed
3737
{
unknown's avatar
unknown committed
3738
  if (!print_event_info->short_form)
unknown's avatar
unknown committed
3739
  {
unknown's avatar
unknown committed
3740
    print_header(file, print_event_info);
unknown's avatar
unknown committed
3741 3742 3743
    fprintf(file, "\tUser_var\n");
  }

3744
  fprintf(file, "SET @`");
unknown's avatar
unknown committed
3745
  my_fwrite(file, (byte*) name, (uint) (name_len), MYF(MY_NABP | MY_WME));
3746
  fprintf(file, "`");
unknown's avatar
unknown committed
3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764

  if (is_null)
  {
    fprintf(file, ":=NULL;\n");
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      double real_val;
      float8get(real_val, val);
      fprintf(file, ":=%.14g;\n", real_val);
      break;
    case INT_RESULT:
      char int_buf[22];
      longlong10_to_str(uint8korr(val), int_buf, -10);
      fprintf(file, ":=%s;\n", int_buf);
      break;
unknown's avatar
unknown committed
3765 3766 3767 3768 3769 3770
    case DECIMAL_RESULT:
    {
      char str_buf[200];
      int str_len= sizeof(str_buf) - 1;
      int precision= (int)val[0];
      int scale= (int)val[1];
3771 3772
      decimal_digit_t dec_buf[10];
      decimal_t dec;
unknown's avatar
unknown committed
3773 3774 3775 3776 3777 3778
      dec.len= 10;
      dec.buf= dec_buf;

      bin2decimal(val+2, &dec, precision, scale);
      decimal2string(&dec, str_buf, &str_len, 0, 0, 0);
      str_buf[str_len]= 0;
3779
      fprintf(file, ":=%s;\n",str_buf);
unknown's avatar
unknown committed
3780 3781
      break;
    }
unknown's avatar
unknown committed
3782
    case STRING_RESULT:
3783
    {
3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797
      /*
        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.
      */
3798 3799 3800 3801
      char *hex_str;
      CHARSET_INFO *cs;

      if (!(hex_str= (char *)my_alloca(2*val_len+1+2))) // 2 hex digits / byte
3802
        break; // no error, as we are 'void'
3803
      str_to_hex(hex_str, val, val_len);
3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816
      /*
        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.
        */
        fprintf(file, ":=???;\n");
      else
3817
        fprintf(file, ":=_%s %s COLLATE `%s`;\n", cs->csname, hex_str, cs->name);
3818
      my_afree(hex_str);
3819
    }
unknown's avatar
unknown committed
3820
      break;
3821
    case ROW_RESULT:
unknown's avatar
unknown committed
3822
    default:
unknown's avatar
unknown committed
3823
      DBUG_ASSERT(1);
unknown's avatar
unknown committed
3824 3825 3826 3827 3828
      return;
    }
  }
  fflush(file);
}
unknown's avatar
SCRUM  
unknown committed
3829
#endif
3830

unknown's avatar
unknown committed
3831

unknown's avatar
unknown committed
3832
/*
unknown's avatar
unknown committed
3833
  User_var_log_event::exec_event()
unknown's avatar
unknown committed
3834
*/
unknown's avatar
unknown committed
3835

unknown's avatar
unknown committed
3836
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
unknown's avatar
unknown committed
3837 3838 3839
int User_var_log_event::exec_event(struct st_relay_log_info* rli)
{
  Item *it= 0;
3840 3841 3842
  CHARSET_INFO *charset;
  if (!(charset= get_charset(charset_number, MYF(MY_WME))))
    return 1;
unknown's avatar
unknown committed
3843 3844 3845
  LEX_STRING user_var_name;
  user_var_name.str= name;
  user_var_name.length= name_len;
3846 3847
  double real_val;
  longlong int_val;
unknown's avatar
unknown committed
3848 3849 3850 3851 3852 3853 3854 3855 3856 3857

  if (is_null)
  {
    it= new Item_null();
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      float8get(real_val, val);
unknown's avatar
unknown committed
3858
      it= new Item_float(real_val);
3859
      val= (char*) &real_val;		// Pointer to value in native format
3860
      val_len= 8;
unknown's avatar
unknown committed
3861 3862
      break;
    case INT_RESULT:
3863 3864 3865
      int_val= (longlong) uint8korr(val);
      it= new Item_int(int_val);
      val= (char*) &int_val;		// Pointer to value in native format
3866
      val_len= 8;
unknown's avatar
unknown committed
3867
      break;
unknown's avatar
unknown committed
3868 3869 3870 3871 3872 3873 3874 3875
    case DECIMAL_RESULT:
    {
      Item_decimal *dec= new Item_decimal(val+2, val[0], val[1]);
      it= dec;
      val= (char *)dec->val_decimal(NULL);
      val_len= sizeof(my_decimal);
      break;
    }
unknown's avatar
unknown committed
3876 3877 3878
    case STRING_RESULT:
      it= new Item_string(val, val_len, charset);
      break;
3879
    case ROW_RESULT:
unknown's avatar
unknown committed
3880
    default:
unknown's avatar
unknown committed
3881 3882 3883 3884 3885
      DBUG_ASSERT(1);
      return 0;
    }
  }
  Item_func_set_user_var e(user_var_name, it);
3886 3887 3888 3889
  /*
    Item_func_set_user_var can't substitute something else on its place =>
    0 can be passed as last argument (reference on item)
  */
3890
  e.fix_fields(thd, 0);
3891 3892 3893 3894 3895
  /*
    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.
   */
3896
  e.update_hash(val, val_len, type, charset, DERIVATION_IMPLICIT);
unknown's avatar
unknown committed
3897
  free_root(thd->mem_root,0);
unknown's avatar
unknown committed
3898

3899
  rli->inc_event_relay_log_pos();
unknown's avatar
unknown committed
3900 3901
  return 0;
}
unknown's avatar
unknown committed
3902
#endif /* !MYSQL_CLIENT */
3903 3904


unknown's avatar
unknown committed
3905
/**************************************************************************
3906
  Slave_log_event methods
unknown's avatar
unknown committed
3907
**************************************************************************/
unknown's avatar
unknown committed
3908

unknown's avatar
SCRUM  
unknown committed
3909
#ifdef HAVE_REPLICATION
3910
#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
3911
void Unknown_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3912
{
unknown's avatar
unknown committed
3913
  if (print_event_info->short_form)
3914
    return;
unknown's avatar
unknown committed
3915
  print_header(file, print_event_info);
3916 3917 3918 3919
  fputc('\n', file);
  fprintf(file, "# %s", "Unknown event\n");
}
#endif  
3920

3921
#ifndef MYSQL_CLIENT
3922
void Slave_log_event::pack_info(Protocol *protocol)
3923
{
unknown's avatar
unknown committed
3924
  char buf[256+HOSTNAME_LENGTH], *pos;
3925 3926 3927 3928 3929 3930 3931
  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=");
unknown's avatar
unknown committed
3932
  pos= longlong10_to_str(master_pos, pos, 10);
3933
  protocol->store(buf, pos-buf, &my_charset_bin);
3934
}
unknown's avatar
unknown committed
3935
#endif /* !MYSQL_CLIENT */
3936 3937 3938 3939


#ifndef MYSQL_CLIENT
Slave_log_event::Slave_log_event(THD* thd_arg,
unknown's avatar
unknown committed
3940
				 struct st_relay_log_info* rli)
3941
  :Log_event(thd_arg, 0, 0) , mem_pool(0), master_host(0)
3942 3943 3944 3945
{
  DBUG_ENTER("Slave_log_event");
  if (!rli->inited)				// QQ When can this happen ?
    DBUG_VOID_RETURN;
3946

3947 3948 3949 3950 3951
  MASTER_INFO* mi = rli->mi;
  // 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);
3952
  master_log_len = strlen(rli->group_master_log_name);
3953 3954 3955
  // 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))))
3956
  {
3957 3958 3959
    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;
3960
    memcpy(master_log, rli->group_master_log_name, master_log_len + 1);
3961
    master_port = mi->port;
3962
    master_pos = rli->group_master_log_pos;
3963 3964
    DBUG_PRINT("info", ("master_log: %s  pos: %d", master_log,
			(ulong) master_pos));
3965
  }
3966 3967 3968 3969 3970 3971
  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;
}
unknown's avatar
unknown committed
3972
#endif /* !MYSQL_CLIENT */
3973 3974 3975 3976 3977 3978 3979 3980 3981


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


#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
3982
void Slave_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3983 3984
{
  char llbuff[22];
unknown's avatar
unknown committed
3985
  if (print_event_info->short_form)
3986
    return;
unknown's avatar
unknown committed
3987
  print_header(file, print_event_info);
3988
  fputc('\n', file);
unknown's avatar
unknown committed
3989 3990
  fprintf(file, "\
Slave: master_host: '%s'  master_port: %d  master_log: '%s'  master_pos: %s\n",
3991 3992
	  master_host, master_port, master_log, llstr(master_pos, llbuff));
}
unknown's avatar
unknown committed
3993
#endif /* MYSQL_CLIENT */
3994 3995 3996 3997 3998 3999 4000 4001


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


4002
#ifndef MYSQL_CLIENT
4003
bool Slave_log_event::write(IO_CACHE* file)
4004
{
4005
  ulong event_length= get_data_size();
4006 4007 4008
  int8store(mem_pool + SL_MASTER_POS_OFFSET, master_pos);
  int2store(mem_pool + SL_MASTER_PORT_OFFSET, master_port);
  // log and host are already there
4009 4010 4011

  return (write_header(file, event_length) ||
          my_b_safe_write(file, (byte*) mem_pool, event_length));
4012
}
4013
#endif
4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024


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)
4025
  {
4026 4027
    master_host = 0;
    return;
4028
  }
4029 4030
  master_log_len = strlen(master_log);
}
4031

4032

4033 4034 4035
/* This code is not used, so has not been updated to be format-tolerant */
Slave_log_event::Slave_log_event(const char* buf, uint event_len)
  :Log_event(buf,0) /*unused event*/ ,mem_pool(0),master_host(0)
4036
{
4037
  if (event_len < LOG_EVENT_HEADER_LEN)
4038
    return;
4039
  event_len -= LOG_EVENT_HEADER_LEN;
4040 4041 4042 4043 4044
  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);
4045 4046
}

4047

4048 4049 4050 4051 4052 4053 4054
#ifndef MYSQL_CLIENT
int Slave_log_event::exec_event(struct st_relay_log_info* rli)
{
  if (mysql_bin_log.is_open())
    mysql_bin_log.write(this);
  return Log_event::exec_event(rli);
}
unknown's avatar
unknown committed
4055
#endif /* !MYSQL_CLIENT */
4056 4057


unknown's avatar
unknown committed
4058
/**************************************************************************
unknown's avatar
unknown committed
4059
	Stop_log_event methods
unknown's avatar
unknown committed
4060
**************************************************************************/
4061

unknown's avatar
unknown committed
4062
/*
4063
  Stop_log_event::print()
4064
*/
4065 4066

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
4067
void Stop_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4068
{
unknown's avatar
unknown committed
4069
  if (print_event_info->short_form)
4070 4071
    return;

unknown's avatar
unknown committed
4072
  print_header(file, print_event_info);
4073 4074
  fprintf(file, "\tStop\n");
  fflush(file);
4075
}
unknown's avatar
unknown committed
4076
#endif /* MYSQL_CLIENT */
4077

4078

4079
/*
4080
  Stop_log_event::exec_event()
4081

4082
  The master stopped.
unknown's avatar
unknown committed
4083
  We used to clean up all temporary tables but this is useless as, as the
4084 4085
  master has shut down properly, it has written all DROP TEMPORARY TABLE
  (prepared statements' deletion is TODO only when we binlog prep stmts).
4086 4087 4088
  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.
4089
  The place were we must do this cleaning is in Start_log_event_v3::exec_event(),
4090
  not here. Because if we come here, the master was sane.
4091 4092
*/

4093
#ifndef MYSQL_CLIENT
4094
int Stop_log_event::exec_event(struct st_relay_log_info* rli)
4095
{
unknown's avatar
unknown committed
4096 4097
  /*
    We do not want to update master_log pos because we get a rotate event
4098
    before stop, so by now group_master_log_name is set to the next log.
4099
    If we updated it, we will have incorrect master coordinates and this
unknown's avatar
unknown committed
4100
    could give false triggers in MASTER_POS_WAIT() that we have reached
4101
    the target position when in fact we have not.
unknown's avatar
unknown committed
4102
  */
4103 4104 4105 4106 4107 4108 4109
  if (thd->options & OPTION_BEGIN)
    rli->inc_event_relay_log_pos();
  else
  {
    rli->inc_group_relay_log_pos(0);
    flush_relay_log_info(rli);
  }
4110 4111
  return 0;
}
unknown's avatar
unknown committed
4112
#endif /* !MYSQL_CLIENT */
unknown's avatar
SCRUM  
unknown committed
4113
#endif /* HAVE_REPLICATION */
4114

4115

unknown's avatar
unknown committed
4116
/**************************************************************************
unknown's avatar
unknown committed
4117
	Create_file_log_event methods
unknown's avatar
unknown committed
4118
**************************************************************************/
4119 4120

/*
4121
  Create_file_log_event ctor
unknown's avatar
unknown committed
4122
*/
4123 4124

#ifndef MYSQL_CLIENT
unknown's avatar
unknown committed
4125 4126 4127 4128
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,
4129
                      bool ignore,
unknown's avatar
unknown committed
4130
		      char* block_arg, uint block_len_arg, bool using_trans)
4131
  :Load_log_event(thd_arg,ex,db_arg,table_name_arg,fields_arg,handle_dup, ignore,
unknown's avatar
unknown committed
4132
		  using_trans),
4133
   fake_base(0), block(block_arg), event_buf(0), block_len(block_len_arg),
4134
   file_id(thd_arg->file_id = mysql_bin_log.next_file_id())
4135
{
unknown's avatar
unknown committed
4136
  DBUG_ENTER("Create_file_log_event");
4137
  sql_ex.force_new_format();
unknown's avatar
unknown committed
4138
  DBUG_VOID_RETURN;
4139
}
4140

4141

unknown's avatar
unknown committed
4142
/*
4143
  Create_file_log_event::write_data_body()
unknown's avatar
unknown committed
4144
*/
4145

4146
bool Create_file_log_event::write_data_body(IO_CACHE* file)
4147
{
4148 4149
  bool res;
  if ((res= Load_log_event::write_data_body(file)) || fake_base)
4150 4151
    return res;
  return (my_b_safe_write(file, (byte*) "", 1) ||
4152
          my_b_safe_write(file, (byte*) block, block_len));
4153 4154
}

4155

unknown's avatar
unknown committed
4156
/*
4157
  Create_file_log_event::write_data_header()
unknown's avatar
unknown committed
4158
*/
unknown's avatar
unknown committed
4159

4160
bool Create_file_log_event::write_data_header(IO_CACHE* file)
4161
{
4162
  bool res;
4163
  byte buf[CREATE_FILE_HEADER_LEN];
4164 4165
  if ((res= Load_log_event::write_data_header(file)) || fake_base)
    return res;
4166
  int4store(buf + CF_FILE_ID_OFFSET, file_id);
4167
  return my_b_safe_write(file, buf, CREATE_FILE_HEADER_LEN) != 0;
4168 4169 4170
}


unknown's avatar
unknown committed
4171
/*
4172
  Create_file_log_event::write_base()
unknown's avatar
unknown committed
4173
*/
4174

4175
bool Create_file_log_event::write_base(IO_CACHE* file)
4176
{
4177 4178 4179 4180
  bool res;
  fake_base= 1;                                 // pretend we are Load event
  res= write(file);
  fake_base= 0;
4181 4182 4183
  return res;
}

4184
#endif /* !MYSQL_CLIENT */
4185

unknown's avatar
unknown committed
4186
/*
4187
  Create_file_log_event ctor
unknown's avatar
unknown committed
4188
*/
4189

4190 4191 4192
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)
4193
{
4194 4195 4196 4197 4198
  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];
unknown's avatar
unknown committed
4199
  if (!(event_buf= my_memdup((byte*) buf, len, MYF(MY_WME))) ||
4200 4201 4202 4203 4204 4205 4206
      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))
unknown's avatar
unknown committed
4207
    DBUG_VOID_RETURN;
4208
  if (description_event->binlog_version!=1)
4209
  {
4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226
    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);
4227 4228 4229 4230 4231 4232 4233 4234 4235
    if (len < block_offset)
      return;
    block = (char*)buf + block_offset;
    block_len = len - block_offset;
  }
  else
  {
    sql_ex.force_new_format();
    inited_from_old = 1;
4236
  }
unknown's avatar
unknown committed
4237
  DBUG_VOID_RETURN;
4238 4239
}

4240

unknown's avatar
unknown committed
4241
/*
4242
  Create_file_log_event::print()
unknown's avatar
unknown committed
4243
*/
4244 4245

#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
4246
void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info,
unknown's avatar
unknown committed
4247
				  bool enable_local)
unknown's avatar
unknown committed
4248
{
unknown's avatar
unknown committed
4249
  if (print_event_info->short_form)
4250 4251
  {
    if (enable_local && check_fname_outside_temp_buf())
unknown's avatar
unknown committed
4252
      Load_log_event::print(file, print_event_info);
4253
    return;
4254 4255 4256 4257
  }

  if (enable_local)
  {
unknown's avatar
unknown committed
4258
    Load_log_event::print(file, print_event_info,
4259
			  !check_fname_outside_temp_buf());
unknown's avatar
unknown committed
4260 4261 4262 4263 4264
    /* 
       That one is for "file_id: etc" below: in mysqlbinlog we want the #, in
       SHOW BINLOG EVENTS we don't.
    */
    fprintf(file, "#"); 
4265 4266
  }

4267
  fprintf(file, " file_id: %d  block_len: %d\n", file_id, block_len);
unknown's avatar
unknown committed
4268
}
4269

unknown's avatar
unknown committed
4270

unknown's avatar
unknown committed
4271
void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4272
{
unknown's avatar
unknown committed
4273
  print(file, print_event_info, 0);
4274
}
unknown's avatar
unknown committed
4275
#endif /* MYSQL_CLIENT */
unknown's avatar
unknown committed
4276

4277

unknown's avatar
unknown committed
4278
/*
4279
  Create_file_log_event::pack_info()
unknown's avatar
unknown committed
4280
*/
4281

unknown's avatar
SCRUM  
unknown committed
4282
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4283
void Create_file_log_event::pack_info(Protocol *protocol)
4284
{
4285 4286 4287
  char buf[NAME_LEN*2 + 30 + 21*2], *pos;
  pos= strmov(buf, "db=");
  memcpy(pos, db, db_len);
unknown's avatar
unknown committed
4288
  pos= strmov(pos + db_len, ";table=");
4289
  memcpy(pos, table_name, table_name_len);
unknown's avatar
unknown committed
4290
  pos= strmov(pos + table_name_len, ";file_id=");
4291 4292 4293
  pos= int10_to_str((long) file_id, pos, 10);
  pos= strmov(pos, ";block_len=");
  pos= int10_to_str((long) block_len, pos, 10);
unknown's avatar
unknown committed
4294
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
4295
}
unknown's avatar
unknown committed
4296
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
4297 4298


unknown's avatar
unknown committed
4299
/*
4300
  Create_file_log_event::exec_event()
unknown's avatar
unknown committed
4301
*/
4302

unknown's avatar
SCRUM  
unknown committed
4303
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4304
int Create_file_log_event::exec_event(struct st_relay_log_info* rli)
4305
{
unknown's avatar
unknown committed
4306 4307
  char proc_info[17+FN_REFLEN+10], *fname_buf;
  char *ext;
4308 4309 4310
  int fd = -1;
  IO_CACHE file;
  int error = 1;
unknown's avatar
unknown committed
4311

4312
  bzero((char*)&file, sizeof(file));
unknown's avatar
unknown committed
4313 4314
  fname_buf= strmov(proc_info, "Making temp file ");
  ext= slave_load_file_stem(fname_buf, file_id, server_id, ".info");
4315
  thd->proc_info= proc_info;
4316 4317 4318 4319
  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 ||
4320 4321 4322
      init_io_cache(&file, fd, IO_SIZE, WRITE_CACHE, (my_off_t)0, 0,
		    MYF(MY_WME|MY_NABP)))
  {
4323 4324
    slave_print_msg(ERROR_LEVEL, rli, my_errno, "Error in Create_file event: "
                    "could not open file '%s'", fname_buf);
4325 4326 4327 4328
    goto err;
  }
  
  // a trick to avoid allocating another buffer
unknown's avatar
unknown committed
4329 4330
  fname= fname_buf;
  fname_len= (uint) (strmov(ext, ".data") - fname);
4331 4332
  if (write_base(&file))
  {
unknown's avatar
unknown committed
4333
    strmov(ext, ".info"); // to have it right in the error message
4334 4335 4336
    slave_print_msg(ERROR_LEVEL, rli, my_errno,
                    "Error in Create_file event: could not write to file '%s'",
                    fname_buf);
4337 4338 4339 4340 4341 4342
    goto err;
  }
  end_io_cache(&file);
  my_close(fd, MYF(0));
  
  // fname_buf now already has .data, not .info, because we did our trick
4343 4344 4345 4346
  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)
4347
  {
4348 4349
    slave_print_msg(ERROR_LEVEL, rli, my_errno, "Error in Create_file event: "
                    "could not open file '%s'", fname_buf);
4350 4351
    goto err;
  }
unknown's avatar
unknown committed
4352
  if (my_write(fd, (byte*) block, block_len, MYF(MY_WME+MY_NABP)))
4353
  {
4354 4355
    slave_print_msg(ERROR_LEVEL, rli, my_errno, "Error in Create_file event: "
                    "write to '%s' failed", fname_buf);
4356 4357
    goto err;
  }
4358 4359
  error=0;					// Everything is ok

4360 4361 4362 4363 4364
err:
  if (error)
    end_io_cache(&file);
  if (fd >= 0)
    my_close(fd, MYF(0));
unknown's avatar
unknown committed
4365
  thd->proc_info= 0;
4366
  return error ? 1 : Log_event::exec_event(rli);
4367
}
unknown's avatar
unknown committed
4368
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
4369

4370

unknown's avatar
unknown committed
4371
/**************************************************************************
unknown's avatar
unknown committed
4372
	Append_block_log_event methods
unknown's avatar
unknown committed
4373
**************************************************************************/
4374

unknown's avatar
unknown committed
4375
/*
4376
  Append_block_log_event ctor
unknown's avatar
unknown committed
4377
*/
4378 4379

#ifndef MYSQL_CLIENT  
unknown's avatar
unknown committed
4380 4381
Append_block_log_event::Append_block_log_event(THD* thd_arg, const char* db_arg,
					       char* block_arg,
unknown's avatar
unknown committed
4382 4383 4384
					       uint block_len_arg,
					       bool using_trans)
  :Log_event(thd_arg,0, using_trans), block(block_arg),
unknown's avatar
unknown committed
4385
   block_len(block_len_arg), file_id(thd_arg->file_id), db(db_arg)
4386 4387
{
}
unknown's avatar
unknown committed
4388
#endif
4389 4390


unknown's avatar
unknown committed
4391
/*
4392
  Append_block_log_event ctor
unknown's avatar
unknown committed
4393
*/
4394

4395 4396 4397
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)
4398
{
4399 4400 4401 4402 4403 4404
  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)
unknown's avatar
unknown committed
4405
    DBUG_VOID_RETURN;
4406 4407 4408
  file_id= uint4korr(buf + common_header_len + AB_FILE_ID_OFFSET);
  block= (char*)buf + total_header_len;
  block_len= len - total_header_len;
unknown's avatar
unknown committed
4409
  DBUG_VOID_RETURN;
4410 4411 4412
}


unknown's avatar
unknown committed
4413
/*
4414
  Append_block_log_event::write()
unknown's avatar
unknown committed
4415
*/
4416

4417
#ifndef MYSQL_CLIENT
4418
bool Append_block_log_event::write(IO_CACHE* file)
4419 4420 4421
{
  byte buf[APPEND_BLOCK_HEADER_LEN];
  int4store(buf + AB_FILE_ID_OFFSET, file_id);
4422 4423
  return (write_header(file, APPEND_BLOCK_HEADER_LEN + block_len) ||
          my_b_safe_write(file, buf, APPEND_BLOCK_HEADER_LEN) ||
4424 4425
	  my_b_safe_write(file, (byte*) block, block_len));
}
4426
#endif
4427 4428


unknown's avatar
unknown committed
4429
/*
4430
  Append_block_log_event::print()
unknown's avatar
unknown committed
4431
*/
4432 4433

#ifdef MYSQL_CLIENT  
unknown's avatar
unknown committed
4434
void Append_block_log_event::print(FILE* file,
unknown's avatar
unknown committed
4435
				   PRINT_EVENT_INFO* print_event_info)
4436
{
unknown's avatar
unknown committed
4437
  if (print_event_info->short_form)
4438
    return;
unknown's avatar
unknown committed
4439
  print_header(file, print_event_info);
4440
  fputc('\n', file);
unknown's avatar
unknown committed
4441 4442
  fprintf(file, "#%s: file_id: %d  block_len: %d\n",
	  get_type_str(), file_id, block_len);
4443
}
unknown's avatar
unknown committed
4444
#endif /* MYSQL_CLIENT */
4445 4446


unknown's avatar
unknown committed
4447
/*
4448
  Append_block_log_event::pack_info()
unknown's avatar
unknown committed
4449
*/
4450

unknown's avatar
SCRUM  
unknown committed
4451
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4452
void Append_block_log_event::pack_info(Protocol *protocol)
4453 4454 4455 4456 4457 4458
{
  char buf[256];
  uint length;
  length= (uint) my_sprintf(buf,
			    (buf, ";file_id=%u;block_len=%u", file_id,
			     block_len));
unknown's avatar
unknown committed
4459
  protocol->store(buf, length, &my_charset_bin);
4460 4461 4462
}


unknown's avatar
unknown committed
4463
/*
4464
  Append_block_log_event::get_create_or_append()
unknown's avatar
unknown committed
4465 4466
*/

4467
int Append_block_log_event::get_create_or_append() const
unknown's avatar
unknown committed
4468
{
4469
  return 0; /* append to the file, fail if not exists */
unknown's avatar
unknown committed
4470 4471
}

unknown's avatar
unknown committed
4472
/*
4473
  Append_block_log_event::exec_event()
unknown's avatar
unknown committed
4474
*/
4475

4476
int Append_block_log_event::exec_event(struct st_relay_log_info* rli)
4477
{
4478
  char proc_info[17+FN_REFLEN+10], *fname= proc_info+17;
4479
  int fd;
4480
  int error = 1;
unknown's avatar
unknown committed
4481
  DBUG_ENTER("Append_block_log_event::exec_event");
4482

unknown's avatar
unknown committed
4483 4484
  fname= strmov(proc_info, "Making temp file ");
  slave_load_file_stem(fname, file_id, server_id, ".data");
4485
  thd->proc_info= proc_info;
4486 4487 4488 4489 4490 4491 4492
  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)
    {
4493 4494 4495
      slave_print_msg(ERROR_LEVEL, rli, my_errno,
                      "Error in %s event: could not create file '%s'",
                      get_type_str(), fname);
4496 4497 4498
      goto err;
    }
  }
4499 4500
  else if ((fd = my_open(fname, O_WRONLY | O_APPEND | O_BINARY | O_NOFOLLOW,
                         MYF(MY_WME))) < 0)
4501
  {
4502 4503 4504
    slave_print_msg(ERROR_LEVEL, rli, my_errno,
                    "Error in %s event: could not open file '%s'",
                    get_type_str(), fname);
4505 4506
    goto err;
  }
unknown's avatar
unknown committed
4507
  if (my_write(fd, (byte*) block, block_len, MYF(MY_WME+MY_NABP)))
4508
  {
4509 4510 4511
    slave_print_msg(ERROR_LEVEL, rli, my_errno,
                    "Error in %s event: write to '%s' failed",
                    get_type_str(), fname);
4512 4513 4514
    goto err;
  }
  error=0;
4515

4516 4517 4518
err:
  if (fd >= 0)
    my_close(fd, MYF(0));
4519
  thd->proc_info= 0;
unknown's avatar
unknown committed
4520
  DBUG_RETURN(error ? error : Log_event::exec_event(rli));
4521
}
unknown's avatar
SCRUM  
unknown committed
4522
#endif
4523 4524


unknown's avatar
unknown committed
4525
/**************************************************************************
unknown's avatar
unknown committed
4526
	Delete_file_log_event methods
unknown's avatar
unknown committed
4527
**************************************************************************/
4528

unknown's avatar
unknown committed
4529
/*
4530
  Delete_file_log_event ctor
unknown's avatar
unknown committed
4531
*/
4532 4533

#ifndef MYSQL_CLIENT
unknown's avatar
unknown committed
4534 4535 4536
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)
4537 4538
{
}
unknown's avatar
unknown committed
4539
#endif
4540

unknown's avatar
unknown committed
4541
/*
4542
  Delete_file_log_event ctor
unknown's avatar
unknown committed
4543
*/
4544

4545 4546 4547
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)
4548
{
4549 4550 4551
  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))
4552
    return;
4553
  file_id= uint4korr(buf + common_header_len + DF_FILE_ID_OFFSET);
4554 4555 4556
}


unknown's avatar
unknown committed
4557
/*
4558
  Delete_file_log_event::write()
unknown's avatar
unknown committed
4559
*/
4560

4561
#ifndef MYSQL_CLIENT
4562
bool Delete_file_log_event::write(IO_CACHE* file)
4563 4564 4565
{
 byte buf[DELETE_FILE_HEADER_LEN];
 int4store(buf + DF_FILE_ID_OFFSET, file_id);
4566 4567
 return (write_header(file, sizeof(buf)) ||
         my_b_safe_write(file, buf, sizeof(buf)));
4568
}
4569
#endif
4570 4571


unknown's avatar
unknown committed
4572
/*
4573
  Delete_file_log_event::print()
unknown's avatar
unknown committed
4574
*/
4575 4576

#ifdef MYSQL_CLIENT  
unknown's avatar
unknown committed
4577
void Delete_file_log_event::print(FILE* file,
unknown's avatar
unknown committed
4578
				  PRINT_EVENT_INFO* print_event_info)
4579
{
unknown's avatar
unknown committed
4580
  if (print_event_info->short_form)
4581
    return;
unknown's avatar
unknown committed
4582
  print_header(file, print_event_info);
4583 4584 4585
  fputc('\n', file);
  fprintf(file, "#Delete_file: file_id=%u\n", file_id);
}
unknown's avatar
unknown committed
4586
#endif /* MYSQL_CLIENT */
4587

unknown's avatar
unknown committed
4588
/*
4589
  Delete_file_log_event::pack_info()
unknown's avatar
unknown committed
4590
*/
4591

unknown's avatar
SCRUM  
unknown committed
4592
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4593
void Delete_file_log_event::pack_info(Protocol *protocol)
4594 4595 4596 4597
{
  char buf[64];
  uint length;
  length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id));
4598
  protocol->store(buf, (int32) length, &my_charset_bin);
4599
}
unknown's avatar
SCRUM  
unknown committed
4600
#endif
4601

unknown's avatar
unknown committed
4602
/*
4603
  Delete_file_log_event::exec_event()
unknown's avatar
unknown committed
4604
*/
4605

unknown's avatar
SCRUM  
unknown committed
4606
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4607 4608 4609
int Delete_file_log_event::exec_event(struct st_relay_log_info* rli)
{
  char fname[FN_REFLEN+10];
unknown's avatar
unknown committed
4610
  char *ext= slave_load_file_stem(fname, file_id, server_id, ".data");
4611
  (void) my_delete(fname, MYF(MY_WME));
unknown's avatar
unknown committed
4612
  strmov(ext, ".info");
4613 4614 4615
  (void) my_delete(fname, MYF(MY_WME));
  return Log_event::exec_event(rli);
}
unknown's avatar
unknown committed
4616
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
4617 4618


unknown's avatar
unknown committed
4619
/**************************************************************************
unknown's avatar
unknown committed
4620
	Execute_load_log_event methods
unknown's avatar
unknown committed
4621
**************************************************************************/
4622

unknown's avatar
unknown committed
4623
/*
4624
  Execute_load_log_event ctor
unknown's avatar
unknown committed
4625
*/
4626 4627

#ifndef MYSQL_CLIENT  
unknown's avatar
unknown committed
4628 4629 4630
Execute_load_log_event::Execute_load_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)
4631 4632
{
}
unknown's avatar
unknown committed
4633
#endif
4634 4635
  

unknown's avatar
unknown committed
4636
/*
4637
  Execute_load_log_event ctor
unknown's avatar
unknown committed
4638
*/
4639

4640 4641 4642
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)
4643
{
4644 4645 4646
  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))
4647
    return;
4648
  file_id= uint4korr(buf + common_header_len + EL_FILE_ID_OFFSET);
4649 4650 4651
}


unknown's avatar
unknown committed
4652
/*
4653
  Execute_load_log_event::write()
unknown's avatar
unknown committed
4654
*/
4655

4656
#ifndef MYSQL_CLIENT
4657
bool Execute_load_log_event::write(IO_CACHE* file)
4658 4659 4660
{
  byte buf[EXEC_LOAD_HEADER_LEN];
  int4store(buf + EL_FILE_ID_OFFSET, file_id);
4661 4662
  return (write_header(file, sizeof(buf)) || 
          my_b_safe_write(file, buf, sizeof(buf)));
4663
}
4664
#endif
4665 4666


unknown's avatar
unknown committed
4667
/*
4668
  Execute_load_log_event::print()
unknown's avatar
unknown committed
4669
*/
4670 4671

#ifdef MYSQL_CLIENT  
unknown's avatar
unknown committed
4672
void Execute_load_log_event::print(FILE* file,
unknown's avatar
unknown committed
4673
				   PRINT_EVENT_INFO* print_event_info)
4674
{
unknown's avatar
unknown committed
4675
  if (print_event_info->short_form)
4676
    return;
unknown's avatar
unknown committed
4677
  print_header(file, print_event_info);
4678 4679 4680 4681
  fputc('\n', file);
  fprintf(file, "#Exec_load: file_id=%d\n",
	  file_id);
}
unknown's avatar
unknown committed
4682
#endif
4683

unknown's avatar
unknown committed
4684
/*
4685
  Execute_load_log_event::pack_info()
unknown's avatar
unknown committed
4686
*/
4687

unknown's avatar
SCRUM  
unknown committed
4688
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4689
void Execute_load_log_event::pack_info(Protocol *protocol)
4690 4691 4692 4693
{
  char buf[64];
  uint length;
  length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id));
4694
  protocol->store(buf, (int32) length, &my_charset_bin);
4695 4696 4697
}


unknown's avatar
unknown committed
4698
/*
4699
  Execute_load_log_event::exec_event()
unknown's avatar
unknown committed
4700
*/
unknown's avatar
SCRUM  
unknown committed
4701

4702
int Execute_load_log_event::exec_event(struct st_relay_log_info* rli)
4703 4704
{
  char fname[FN_REFLEN+10];
unknown's avatar
unknown committed
4705
  char *ext;
4706
  int fd;
unknown's avatar
unknown committed
4707
  int error= 1;
4708
  IO_CACHE file;
unknown's avatar
unknown committed
4709
  Load_log_event *lev= 0;
4710

unknown's avatar
unknown committed
4711
  ext= slave_load_file_stem(fname, file_id, server_id, ".info");
4712 4713
  if ((fd = my_open(fname, O_RDONLY | O_BINARY | O_NOFOLLOW,
                    MYF(MY_WME))) < 0 ||
4714 4715 4716
      init_io_cache(&file, fd, IO_SIZE, READ_CACHE, (my_off_t)0, 0,
		    MYF(MY_WME|MY_NABP)))
  {
4717 4718
    slave_print_msg(ERROR_LEVEL, rli, my_errno, "Error in Exec_load event: "
                    "could not open file '%s'", fname);
4719 4720
    goto err;
  }
4721
  if (!(lev = (Load_log_event*)Log_event::read_log_event(&file,
4722 4723
                                                         (pthread_mutex_t*)0,
                                                         rli->relay_log.description_event_for_exec)) ||
4724
      lev->get_type_code() != NEW_LOAD_EVENT)
4725
  {
4726 4727
    slave_print_msg(ERROR_LEVEL, rli, 0, "Error in Exec_load event: "
                    "file '%s' appears corrupted", fname);
4728 4729
    goto err;
  }
unknown's avatar
unknown committed
4730

4731
  lev->thd = thd;
4732 4733
  /*
    lev->exec_event should use rli only for errors
unknown's avatar
unknown committed
4734 4735 4736
    i.e. should not advance rli's position.
    lev->exec_event is the place where the table is loaded (it calls
    mysql_load()).
4737
  */
unknown's avatar
unknown committed
4738

4739
  rli->future_group_master_log_pos= log_pos;
4740
  if (lev->exec_event(0,rli,1)) 
4741
  {
4742 4743 4744 4745 4746 4747 4748 4749 4750
    /*
      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.
    */
    char *tmp= my_strdup(rli->last_slave_error,MYF(MY_WME));
4751 4752
    if (tmp)
    {
4753 4754 4755 4756
      slave_print_msg(ERROR_LEVEL, rli,
                      rli->last_slave_errno, /* ok to re-use error code */
                      "%s. Failed executing load from '%s'", 
                      tmp, fname);
4757 4758
      my_free(tmp,MYF(0));
    }
4759 4760
    goto err;
  }
unknown's avatar
unknown committed
4761 4762 4763 4764 4765 4766 4767 4768 4769 4770
  /*
    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;
  }
4771
  (void) my_delete(fname, MYF(MY_WME));
unknown's avatar
unknown committed
4772
  memcpy(ext, ".data", 6);
4773
  (void) my_delete(fname, MYF(MY_WME));
4774
  error = 0;
4775

4776 4777 4778
err:
  delete lev;
  if (fd >= 0)
4779
  {
4780
    my_close(fd, MYF(0));
4781 4782
    end_io_cache(&file);
  }
4783
  return error ? error : Log_event::exec_event(rli);
4784
}
unknown's avatar
SCRUM  
unknown committed
4785

unknown's avatar
unknown committed
4786
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
4787 4788


unknown's avatar
unknown committed
4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813
/**************************************************************************
	Begin_load_query_log_event methods
**************************************************************************/

#ifndef MYSQL_CLIENT
Begin_load_query_log_event::
Begin_load_query_log_event(THD* thd_arg, const char* db_arg, char* block_arg,
                           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)
4814
int Begin_load_query_log_event::get_create_or_append() const
unknown's avatar
unknown committed
4815
{
4816
  return 1; /* create the file */
unknown's avatar
unknown committed
4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870
}
#endif /* defined( HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */


/**************************************************************************
	Execute_load_query_log_event methods
**************************************************************************/


#ifndef MYSQL_CLIENT
Execute_load_query_log_event::
Execute_load_query_log_event(THD* thd_arg, const char* query_arg,
                     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):
  Query_log_event(thd_arg, query_arg, query_length_arg, using_trans,
                  suppress_use),
  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;
}


4871
#ifndef MYSQL_CLIENT
unknown's avatar
unknown committed
4872 4873 4874 4875 4876 4877 4878 4879 4880 4881
bool
Execute_load_query_log_event::write_post_header_for_derived(IO_CACHE* file)
{
  char buf[EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN];
  int4store(buf, file_id);
  int4store(buf + 4, fn_pos_start);
  int4store(buf + 4 + 4, fn_pos_end);
  *(buf + 4 + 4 + 4)= (char)dup_handling;
  return my_b_safe_write(file, (byte*) buf, EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN);
}
4882
#endif
unknown's avatar
unknown committed
4883 4884 4885


#ifdef MYSQL_CLIENT
unknown's avatar
unknown committed
4886
void Execute_load_query_log_event::print(FILE* file,
unknown's avatar
unknown committed
4887
                                         PRINT_EVENT_INFO* print_event_info)
unknown's avatar
unknown committed
4888
{
unknown's avatar
unknown committed
4889
  print(file, print_event_info, 0);
unknown's avatar
unknown committed
4890 4891 4892
}


unknown's avatar
unknown committed
4893
void Execute_load_query_log_event::print(FILE* file,
unknown's avatar
unknown committed
4894
                                         PRINT_EVENT_INFO* print_event_info,
unknown's avatar
unknown committed
4895 4896
                                         const char *local_fname)
{
unknown's avatar
unknown committed
4897
  print_query_header(file, print_event_info);
unknown's avatar
unknown committed
4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917

  if (local_fname)
  {
    my_fwrite(file, (byte*) query, fn_pos_start, MYF(MY_NABP | MY_WME));
    fprintf(file, " LOCAL INFILE \'");
    fprintf(file, local_fname);
    fprintf(file, "\'");
    if (dup_handling == LOAD_DUP_REPLACE)
      fprintf(file, " REPLACE");
    fprintf(file, " INTO");
    my_fwrite(file, (byte*) query + fn_pos_end, q_len-fn_pos_end,
        MYF(MY_NABP | MY_WME));
    fprintf(file, ";\n");
  }
  else
  {
    my_fwrite(file, (byte*) query, q_len, MYF(MY_NABP | MY_WME));
    fprintf(file, ";\n");
  }

unknown's avatar
unknown committed
4918
  if (!print_event_info->short_form)
unknown's avatar
unknown committed
4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961
    fprintf(file, "# file_id: %d \n", file_id);
}
#endif


#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
void Execute_load_query_log_event::pack_info(Protocol *protocol)
{
  char *buf, *pos;
  if (!(buf= my_malloc(9 + db_len + q_len + 10 + 21, MYF(MY_WME))))
    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
Execute_load_query_log_event::exec_event(struct st_relay_log_info* rli)
{
  char *p;
  char *buf;
  char *fname;
  char *fname_end;
  int error;

  /* Replace filename and LOCAL keyword in query before executing it */
  if (!(buf = my_malloc(q_len + 1 - (fn_pos_end - fn_pos_start) +
                        (FN_REFLEN + 10) + 10 + 8 + 5, MYF(MY_WME))))
  {
4962
    slave_print_msg(ERROR_LEVEL, rli, my_errno, "Not enough memory");
unknown's avatar
unknown committed
4963 4964 4965 4966 4967 4968
    return 1;
  }

  p= buf;
  memcpy(p, query, fn_pos_start);
  p+= fn_pos_start;
4969
  fname= (p= strmake(p, STRING_WITH_LEN(" INFILE \'")));
unknown's avatar
unknown committed
4970 4971
  p= slave_load_file_stem(p, file_id, server_id, ".data");
  fname_end= p= strend(p);                      // Safer than p=p+5
unknown's avatar
unknown committed
4972
  *(p++)='\'';
unknown's avatar
unknown committed
4973
  switch (dup_handling) {
unknown's avatar
unknown committed
4974
  case LOAD_DUP_IGNORE:
4975
    p= strmake(p, STRING_WITH_LEN(" IGNORE"));
unknown's avatar
unknown committed
4976 4977
    break;
  case LOAD_DUP_REPLACE:
4978
    p= strmake(p, STRING_WITH_LEN(" REPLACE"));
unknown's avatar
unknown committed
4979 4980 4981 4982 4983
    break;
  default:
    /* Ordinary load data */
    break;
  }
4984
  p= strmake(p, STRING_WITH_LEN(" INTO"));
unknown's avatar
unknown committed
4985 4986 4987 4988 4989 4990 4991
  p= strmake(p, query+fn_pos_end, q_len-fn_pos_end);

  error= Query_log_event::exec_event(rli, buf, p-buf);

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

4992 4993 4994 4995 4996 4997
  /*
    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));
unknown's avatar
unknown committed
4998 4999 5000 5001 5002 5003 5004

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


unknown's avatar
unknown committed
5005
/**************************************************************************
unknown's avatar
unknown committed
5006
	sql_ex_info methods
unknown's avatar
unknown committed
5007
**************************************************************************/
5008

unknown's avatar
unknown committed
5009
/*
5010
  sql_ex_info::write_data()
unknown's avatar
unknown committed
5011
*/
5012

5013
bool sql_ex_info::write_data(IO_CACHE* file)
5014 5015 5016
{
  if (new_format())
  {
5017 5018 5019 5020 5021
    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) ||
5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033
	    my_b_safe_write(file,(byte*) &opt_flags,1));
  }
  else
  {
    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;
5034
    return my_b_safe_write(file, (byte*) &old_ex, sizeof(old_ex)) != 0;
5035 5036 5037 5038
  }
}


unknown's avatar
unknown committed
5039
/*
5040
  sql_ex_info::init()
unknown's avatar
unknown committed
5041
*/
5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055

char* sql_ex_info::init(char* buf,char* buf_end,bool use_new_format)
{
  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.
    */
5056 5057 5058 5059 5060
    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))
5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086
      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;
}
5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098


#ifdef HAVE_ROW_BASED_REPLICATION

/**************************************************************************
	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),
5099
    m_row_count(0),
5100 5101
    m_table(tbl_arg),
    m_table_id(tid),
5102 5103
    m_width(tbl_arg ? tbl_arg->s->fields : 1),
    m_rows_buf(0), m_rows_cur(0), m_rows_end(0),
5104 5105
    m_flags(0)
{
5106 5107
  /*
    We allow a special form of dummy event when the table, and cols
5108
    are null and the table id is ~0UL.  This is a temporary
5109 5110
    solution, to be able to terminate a started statement in the
    binary log: the extreneous events will be removed in the future.
5111
   */
5112 5113
  DBUG_ASSERT(tbl_arg && tbl_arg->s && tid != ~0UL ||
              !tbl_arg && !cols && tid == ~0UL);
5114 5115 5116 5117 5118 5119 5120 5121 5122 5123

  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);
  /* if bitmap_init fails, catched in is_valid() */
  if (likely(!bitmap_init(&m_cols,
                          m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL,
                          (m_width + 7) & ~7UL,
                          false)))
5124 5125 5126 5127 5128
  {
    /* Cols can be zero if this is a dummy binrows event */
    if (likely(cols != NULL))
      memcpy(m_cols.bitmap, cols->bitmap, no_bytes_in_map(cols));
  }
5129 5130 5131 5132 5133 5134 5135 5136 5137 5138
  else
    m_cols.bitmap= 0; // to not free it
}
#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),
5139
    m_row_count(0),
5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166
    m_rows_buf(0), m_rows_cur(0), m_rows_end(0)
{
  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];

  DBUG_PRINT("enter",("event_len=%ld, common_header_len=%d, "
		      "post_header_len=%d",
		      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
  {
    m_table_id= uint6korr(post_start);
    post_start+= RW_FLAGS_OFFSET;
  }

  m_flags= uint2korr(post_start);

5167 5168
  byte const *const var_start= (const byte *)buf + common_header_len + 
    post_header_len;
5169
  byte const *const ptr_width= var_start;
5170 5171
  uchar *ptr_after_width= (uchar*) ptr_width;
  m_width = net_field_length(&ptr_after_width);
5172 5173

  const uint byte_count= (m_width + 7) / 8;
5174
  const byte* const ptr_rows_data= var_start + byte_count + 1;
5175

5176
  my_size_t const data_size= event_len - (ptr_rows_data - (const byte *) buf);
5177 5178 5179
  DBUG_PRINT("info",("m_table_id=%lu, m_flags=%d, m_width=%u, data_size=%lu",
                     m_table_id, m_flags, m_width, data_size));

5180
  m_rows_buf= (byte*)my_malloc(data_size, MYF(MY_WME));
5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203
  if (likely((bool)m_rows_buf))
  {
    /* if bitmap_init fails, catched in is_valid() */
    if (likely(!bitmap_init(&m_cols,
                            m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL,
                            (m_width + 7) & ~7UL,
                            false)))
      memcpy(m_cols.bitmap, ptr_after_width, byte_count);
    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().
5204
  my_free((gptr)m_rows_buf, MYF(MY_ALLOW_ZERO_PTR));
5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217
}

#ifndef MYSQL_CLIENT
int Rows_log_event::do_add_row_data(byte *const row_data,
                                    my_size_t const length)
{
  /*
    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
  */
  DBUG_ENTER("Rows_log_event::do_add_row_data(byte *data, my_size_t length)");
  DBUG_PRINT("enter", ("row_data= %p, length= %lu", row_data, length));
5218
  DBUG_DUMP("row_data", (const char*)row_data, min(length, 32));
5219 5220

  DBUG_ASSERT(m_rows_buf <= m_rows_cur);
5221
  DBUG_ASSERT(!m_rows_buf || m_rows_end && m_rows_buf < m_rows_end);
5222 5223 5224 5225 5226 5227 5228 5229
  DBUG_ASSERT(m_rows_cur <= m_rows_end);

  /* The cast will always work since m_rows_cur <= m_rows_end */
  if (static_cast<my_size_t>(m_rows_end - m_rows_cur) < length)
  {
    my_size_t const block_size= 1024;
    my_ptrdiff_t const old_alloc= m_rows_end - m_rows_buf;
    my_ptrdiff_t const cur_size= m_rows_cur - m_rows_buf;
5230 5231
    my_ptrdiff_t const new_alloc= 
        block_size * ((cur_size + length) / block_size + block_size - 1);
5232

5233 5234
    byte* const new_buf= (byte*)my_realloc((gptr)m_rows_buf, new_alloc,
                                           MYF(MY_ALLOW_ZERO_PTR|MY_WME));
5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254
    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;
  }

  DBUG_ASSERT(m_rows_cur + length < m_rows_end);
  memcpy(m_rows_cur, row_data, length);
  m_rows_cur+= length;
5255
  m_row_count++;
5256 5257 5258 5259 5260 5261
  DBUG_RETURN(0);
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
/*
5262 5263 5264 5265
  Unpack a row into a record.
  
  The row is assumed to only consist of the fields for which the
  bitset represented by 'arr' and 'bits'; the other parts of the
5266
  record are left alone.
5267 5268 5269

  At most 'colcnt' columns are read: if the table is larger than that,
  the remaining fields are not filled in.
5270
 */
5271 5272 5273 5274 5275
static int
unpack_row(RELAY_LOG_INFO *rli,
           TABLE *table, uint colcnt, byte *record,
           char const *row, MY_BITMAP const *cols,
           char const **row_end, ulong *master_reclength)
5276 5277 5278
{
  DBUG_ASSERT(record && row);
  MY_BITMAP *write_set= table->file->write_set;
5279

5280
  my_size_t const n_null_bytes= table->s->null_bytes;
5281
  my_ptrdiff_t const offset= record - (byte*) table->record[0];
5282 5283
  memcpy(record, row, n_null_bytes);            // [1]
  int error= 0;
5284 5285

  bitmap_set_all(write_set);
5286

5287
  Field **const begin_ptr = table->field;
5288
  Field **field_ptr;
5289
  {
5290 5291 5292 5293 5294 5295 5296
    char const *ptr= row + n_null_bytes;
    for (field_ptr= begin_ptr ; *field_ptr ; ++field_ptr)
    {
      Field *const f= *field_ptr;

      if (colcnt == 0)
        break;
5297

5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328
      if (bitmap_is_set(cols, field_ptr -  begin_ptr))
      {
        /* Field...::unpack() cannot return 0 */
        ptr= f->unpack(f->ptr + offset, ptr);
        --colcnt;
      }
      else
        bitmap_clear_bit(write_set, (field_ptr - begin_ptr) + 1);
    }

    *row_end = ptr;
    if (master_reclength)
    {
      if (*field_ptr)
        *master_reclength = (*field_ptr)->ptr - table->record[0];
      else
        *master_reclength = table->s->reclength;
    }
  }

  /*
    Set properties for remaining columns, if there are any. We let the
    corresponding bit in the write_set be set, to write the value if
    it was not there already. We iterate over all remaining columns,
    even if there were an error, to get as many error messages as
    possible.  We are still able to return a pointer to the next row,
    so wedo that.
   */
  for ( ; *field_ptr ; ++field_ptr)
  {
    if ((*field_ptr)->flags & (NOT_NULL_FLAG | NO_DEFAULT_VALUE_FLAG))
5329
    {
5330 5331 5332 5333 5334 5335
      slave_print_msg(ERROR_LEVEL, rli, ER_NO_DEFAULT_FOR_FIELD, 
                      "Field `%s` of table `%s`.`%s` "
                      "has no default value and cannot be NULL",
                      (*field_ptr)->field_name, table->s->db.str, 
                      table->s->table_name.str);
      error = ER_NO_DEFAULT_FOR_FIELD;
5336 5337
    }
    else
5338
      (*field_ptr)->set_default();
5339
  }
5340 5341

  return error;
5342 5343 5344 5345 5346 5347
}

int Rows_log_event::exec_event(st_relay_log_info *rli)
{
  DBUG_ENTER("Rows_log_event::exec_event(st_relay_log_info*)");
  int error= 0;
5348
  char const *row_start= (char const *)m_rows_buf;
5349 5350

  /*
5351
    If m_table_id == ~0UL, then we have a dummy event that does
5352
    not contain any data.  In that case, we just remove all tables in
5353 5354
    the tables_to_lock list, close the thread tables, step the relay
    log position, and return with success.
5355
   */
5356
  if (m_table_id == ~0UL)
5357 5358 5359 5360 5361 5362 5363 5364
  {
    /*
       This one is supposed to be set: just an extra check so that
       nothing strange has happened.
     */
    DBUG_ASSERT(get_flags(STMT_END_F));

    rli->clear_tables_to_lock();
5365
    close_thread_tables(thd);
5366 5367 5368 5369
    thd->clear_error();
    rli->inc_event_relay_log_pos();
    DBUG_RETURN(0);
  }
5370 5371 5372 5373 5374 5375 5376 5377

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

  /*
5378 5379 5380 5381
    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.
5382
  */
5383
  if (!thd->lock)
5384
  {
5385 5386
    bool need_reopen= 1; /* To execute the first lap of the loop below */

5387
    /*
5388 5389 5390
      lock_tables() reads the contents of thd->lex, so they must be
      initialized, so we should call lex_start(); to be even safer, we
      call mysql_init_query() which does a more complete set of inits.
5391
    */
5392
    mysql_init_query(thd, NULL, 0);
5393

5394 5395 5396
    while ((error= lock_tables(thd, rli->tables_to_lock,
                               rli->tables_to_lock_count, &need_reopen)))
    {
5397 5398 5399
      if (!need_reopen)
      {
        slave_print_msg(ERROR_LEVEL, rli, error,
5400 5401
                        "Error in %s event: when locking tables",
                        get_type_str());
5402 5403
        DBUG_RETURN(error);
      }
5404

5405
      /*
5406
        So we need to reopen the tables.
5407

5408 5409
        We need to flush the pending RBR event, since it keeps a
        pointer to an open table.
5410

5411 5412 5413
        ALTERNATIVE SOLUTION (not implemented): Extract a pointer to
        the pending RBR event and reset the table pointer after the
        tables has been reopened.
5414

5415 5416
        NOTE: For this new scheme there should be no pending event:
        need to add code to assert that is the case.
5417 5418
       */
      thd->binlog_flush_pending_rows_event(false);
5419
      close_tables_for_reopen(thd, &rli->tables_to_lock);
5420

5421 5422
      if ((error= open_tables(thd, &rli->tables_to_lock,
                              &rli->tables_to_lock_count, 0)))
5423 5424 5425 5426 5427 5428 5429 5430 5431
      {
        if (thd->query_error || thd->is_fatal_error)
        {
          /*
            Error reporting borrowed from Query_log_event with many excessive
            simplifications (we don't honour --slave-skip-errors)
          */
          uint actual_error= thd->net.last_errno;
          slave_print_msg(ERROR_LEVEL, rli, actual_error,
5432
                          "Error '%s' on reopening tables",
5433
                          (actual_error ? thd->net.last_error :
5434
                           "unexpected success or fatal error"));
5435 5436 5437
          thd->query_error= 1;
        }
        DBUG_RETURN(error);
5438
      }
5439
    }
5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452
    /*
      When the open and locking succeeded, we add all the tables to
      the table map and remove them from tables to lock.
     */
    
    TABLE_LIST *ptr= rli->tables_to_lock;
    while (ptr)
    {
      rli->m_table_map.set_table(ptr->table_id, ptr->table);
      rli->touching_table(ptr->db, ptr->table_name, ptr->table_id);
      char *to_free= reinterpret_cast<char*>(ptr);
      ptr= ptr->next_global;
      my_free(to_free, MYF(MY_WME));
5453
    }
5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466
    rli->tables_to_lock= 0;
    rli->tables_to_lock_count= 0;
  }

  TABLE* table= rli->m_table_map.get_table(m_table_id);

  if (table)
  {
    /*
      table == NULL means that this table should not be replicated
      (this was set up by Table_map_log_event::exec_event() which
      tested replicate-* rules).
    */
5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494

    /*
      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);
    /*
      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));

    error= do_before_row_operations(table);
5495
    while (error == 0 && row_start < (const char*)m_rows_end) {
5496 5497 5498 5499 5500
      char const *row_end= NULL;
      if ((error= do_prepare_row(thd, rli, table, row_start, &row_end)))
        break; // We should to the after-row operation even in the
               // case of error
      
5501
      DBUG_ASSERT(row_end != NULL); // cannot happen
5502
      DBUG_ASSERT(row_end <= (const char*)m_rows_end);
5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539

      /* 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;
      error= do_exec_row(table);
      table->in_use = old_thd;
      switch (error)
      {
        /* Some recoverable errors */
      case HA_ERR_RECORD_CHANGED:
      case HA_ERR_KEY_NOT_FOUND:	/* Idempotency support: OK if
                                           tuple does not exist */
	error= 0;
      case 0:
	break;

      default:
	slave_print_msg(ERROR_LEVEL, rli, error,
                        "Error in %s event: row application failed",
                        get_type_str());
	thd->query_error= 1;
	break;
      }

      row_start= row_end;
    }
    DBUG_EXECUTE_IF("STOP_SLAVE_after_first_Rows_event",
                    rli->abort_slave=1;);
    error= do_after_row_operations(table, error);
    if (!cache_stmt)
      thd->options|= OPTION_STATUS_NO_TRANS_UPDATE;
    
  }

  if (error)
  {                     /* error has occured during the transaction */
unknown's avatar
unknown committed
5540 5541 5542 5543 5544 5545
    slave_print_msg(ERROR_LEVEL, rli, error,
                    "Error in %s event: error during transaction execution "
                    "on table %s.%s",
                    get_type_str(), table->s->db.str, 
                    table->s->table_name.str);
     /*
5546 5547 5548 5549 5550 5551 5552 5553 5554
      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.
    */
unknown's avatar
unknown committed
5555
    thd->reset_current_stmt_binlog_row_based();
5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598
    rli->cleanup_context(thd, 1);
    thd->query_error= 1;
    DBUG_RETURN(error);
  }

  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);
    /*
      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);
    /*
      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.
    */

unknown's avatar
unknown committed
5599
    thd->reset_current_stmt_binlog_row_based();
5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619
    rli->cleanup_context(thd, 0);
    rli->transaction_end(thd);

    if (error == 0)
    {
      /*
        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();
      error= Log_event::exec_event(rli);
    }
    else
      slave_print_msg(ERROR_LEVEL, rli, error,
                      "Error in %s event: commit of row events failed, "
                      "table `%s`.`%s`",
unknown's avatar
unknown committed
5620 5621
                      get_type_str(), table->s->db.str, 
                      table->s->table_name.str);
5622 5623 5624
    DBUG_RETURN(error);
  }

5625
  if (table && (table->s->primary_key == MAX_KEY) && !cache_stmt)
5626 5627
  {
    /*
5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641
      ------------ 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
      st_relay_log_info::unsafe_to_stop_at and all its occurences.
5642
    */
5643
    rli->unsafe_to_stop_at= time(0);
5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674
  }

  DBUG_ASSERT(error == 0);
  thd->clear_error();
  rli->inc_event_relay_log_pos();
  
  DBUG_RETURN(0);
}
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifndef MYSQL_CLIENT
bool Rows_log_event::write_data_header(IO_CACHE *file)
{
  byte buf[ROWS_HEADER_LEN];	// No need to init the buffer
  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.
  */
unknown's avatar
unknown committed
5675
  char sbuf[sizeof(m_width)];
5676 5677
  my_ptrdiff_t const data_size= m_rows_cur - m_rows_buf;

unknown's avatar
unknown committed
5678
  char *const sbuf_end= net_store_length((char*) sbuf, (uint) m_width);
unknown's avatar
unknown committed
5679
  DBUG_ASSERT(static_cast<my_size_t>(sbuf_end - sbuf) <= sizeof(sbuf));
5680

unknown's avatar
unknown committed
5681 5682
  return (my_b_safe_write(file, reinterpret_cast<byte*>(sbuf),
                          sbuf_end - sbuf) ||
5683 5684 5685 5686 5687 5688
          my_b_safe_write(file, reinterpret_cast<byte*>(m_cols.bitmap),
                          no_bytes_in_map(&m_cols)) ||
          my_b_safe_write(file, m_rows_buf, data_size));
}
#endif

5689
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5690 5691
void Rows_log_event::pack_info(Protocol *protocol)
{
5692 5693 5694
  char buf[256];
  char const *const flagstr=
    get_flags(STMT_END_F) ? " flags: STMT_END_F" : "";
unknown's avatar
unknown committed
5695 5696
  my_size_t bytes= my_snprintf(buf, sizeof(buf),
                               "table_id: %lu%s", m_table_id, flagstr);
5697
  protocol->store(buf, bytes, &my_charset_bin);
5698 5699 5700 5701
}
#endif

/**************************************************************************
5702
	Table_map_log_event member functions and support functions
5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722
**************************************************************************/

/*
  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)
  : Log_event(thd, 0, is_transactional),
    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),
    m_colcnt(tbl->s->fields), m_coltype(0),
    m_table_id(tid),
    m_flags(flags)
{
5723
  DBUG_ASSERT(m_table_id != ~0UL);
5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735
  /*
    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;
unknown's avatar
unknown committed
5736
  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master", m_data_size= 6;);
5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790
  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

  /* If malloc fails, catched in is_valid() */
  if ((m_memory= my_malloc(m_colcnt, MYF(MY_WME))))
  {
    m_coltype= reinterpret_cast<unsigned char*>(m_memory);
    for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
      m_coltype[i]= m_table->field[i]->type();
  }
}
#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
  m_table(NULL),
#endif
  m_memory(NULL)
{
  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];
  DBUG_PRINT("info",("event_len=%ld, common_header_len=%d, post_header_len=%d",
                     event_len, common_header_len, post_header_len));

  DBUG_DUMP("event buffer", buf, event_len);

  /* 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);
    m_table_id= uint6korr(post_start);
    post_start+= TM_FLAGS_OFFSET;
  }

5791
  DBUG_ASSERT(m_table_id != ~0UL);
5792 5793 5794 5795 5796 5797 5798

  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 */
5799
  byte const* const ptr_dblen= (byte const*)vpart + 0;
5800 5801 5802 5803 5804 5805 5806 5807
  m_dblen= *(unsigned char*) ptr_dblen;

  /* Length of database name + counter + terminating null */
  byte const* const ptr_tbllen= ptr_dblen + m_dblen + 2;
  m_tbllen= *(unsigned char*) ptr_tbllen;

  /* Length of table name + counter + terminating null */
  byte const* const ptr_colcnt= ptr_tbllen + m_tbllen + 2;
5808 5809
  uchar *ptr_after_colcnt= (uchar*) ptr_colcnt;
  m_colcnt= net_field_length(&ptr_after_colcnt);
5810 5811

  DBUG_PRINT("info",("m_dblen=%d off=%d m_tbllen=%d off=%d m_colcnt=%d off=%d",
5812 5813 5814
                     m_dblen, ptr_dblen-(const byte*)vpart, 
                     m_tbllen, ptr_tbllen-(const byte*)vpart,
                     m_colcnt, ptr_colcnt-(const byte*)vpart));
5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825

  /* Allocate mem for all fields in one go. If fails, catched in is_valid() */
  m_memory= my_multi_malloc(MYF(MY_WME),
			    &m_dbnam, m_dblen + 1,
			    &m_tblnam, m_tbllen + 1,
			    &m_coltype, m_colcnt,
			    NULL);

  if (m_memory)
  {
    /* Copy the different parts into their memory */
5826 5827
    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);
5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862
    memcpy(m_coltype, ptr_after_colcnt, m_colcnt);
  }

  DBUG_VOID_RETURN;
}
#endif

Table_map_log_event::~Table_map_log_event()
{
  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)
int Table_map_log_event::exec_event(st_relay_log_info *rli)
{
  DBUG_ENTER("Table_map_log_event::exec_event(st_relay_log_info*)");

  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);

5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878
  TABLE_LIST *table_list;
  char *db_mem, *tname_mem;
  void *const memory=
    my_multi_malloc(MYF(MY_WME),
                    &table_list, sizeof(TABLE_LIST),
                    &db_mem, NAME_LEN + 1,
                    &tname_mem, NAME_LEN + 1,
                    NULL);

  /*
    If memory is allocated, it the pointer to it should be stored in
    table_list.  If this is not true, the memory will not be correctly
    free:ed later.
  */
  DBUG_ASSERT(memory == NULL || memory == table_list);

5879
  uint32 dummy_len;
5880 5881 5882 5883 5884 5885 5886 5887 5888
  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);
5889 5890 5891

  int error= 0;

5892 5893
  if (rpl_filter->db_ok(table_list->db) &&
      (!rpl_filter->is_on() || rpl_filter->tables_ok("", table_list)))
5894
  {
5895
    /*
unknown's avatar
unknown committed
5896 5897 5898
      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.
5899
    */
unknown's avatar
unknown committed
5900 5901
    if (!thd->current_stmt_binlog_row_based &&
        mysql_bin_log.is_open() && (thd->options & OPTION_BIN_LOG))
5902
    {
unknown's avatar
unknown committed
5903
      thd->set_current_stmt_binlog_row_based();
5904 5905 5906 5907 5908 5909 5910 5911 5912
    }

    /*
      Open the table if it is not already open and add the table to table map.
      If the table should not be replicated, we don't bother to do anything.
      The table map will return NULL and the row-level event will effectively
      be a no-op.
    */
    uint count;
5913 5914 5915 5916 5917 5918 5919
    /*
      open_tables() reads the contents of thd->lex, so they must be
      initialized, so we should call lex_start(); to be even safer, we
      call mysql_init_query() which does a more complete set of inits.
    */
    mysql_init_query(thd, NULL, 0);
    if ((error= open_tables(thd, &table_list, &count, 0)))
5920
    {
5921
      if (thd->query_error || thd->is_fatal_error)
5922
      {
5923 5924 5925
        /*
          Error reporting borrowed from Query_log_event with many excessive
          simplifications (we don't honour --slave-skip-errors)
5926 5927 5928 5929 5930

          BUG: There can be extreneous table maps in the binary log,
          so in case we fail to open the table, we just generate a
          warning and do not add the table to the list of tables to
          open and lock.
5931 5932
        */
        uint actual_error= thd->net.last_errno;
5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953
        switch (actual_error)
        {
        case ER_NO_SUCH_TABLE:
          slave_print_msg(WARNING_LEVEL, rli, actual_error,
                          thd->net.last_error ?
                          thd->net.last_error :
                          "<no message>");
          clear_all_errors(thd, rli);
          rli->inc_event_relay_log_pos();       // Continue with next event
          error= 0;
          break;

        default:
          slave_print_msg(ERROR_LEVEL, rli, actual_error,
                          "Error '%s' on opening table `%s`.`%s`",
                          (actual_error ? thd->net.last_error :
                           "unexpected success or fatal error"),
                          table_list->db, table_list->table_name);
          thd->query_error= 1;
          break;
        }
5954
      }
5955
      DBUG_RETURN(error);
5956 5957
    }

5958
    m_table= table_list->table;
5959 5960 5961 5962 5963 5964 5965

    /*
      This will fail later otherwise, the 'in_use' field should be
      set to the current thread.
    */
    DBUG_ASSERT(m_table->in_use);

5966 5967
    table_def const def(m_coltype, m_colcnt);
    if (def.compatible_with(rli, m_table))
5968 5969 5970 5971 5972 5973
    {
      thd->query_error= 1;
      DBUG_RETURN(ERR_BAD_TABLE_DEF);
    }

    /*
5974 5975 5976
      We record in the slave's information that the table should be
      locked by linking the table into the list of tables to lock, and
      tell the RLI that we are touching a table.
5977 5978
    */
    if (!error)
5979 5980 5981 5982 5983
    {
      table_list->next_global= table_list->next_local= rli->tables_to_lock;
      rli->tables_to_lock= table_list;
      rli->tables_to_lock_count++;
    }
5984 5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005
  }

  /*
    We explicitly do not call Log_event::exec_event() here since we do not
    want the relay log position to be flushed to disk. The flushing will be
    done by the last Rows_log_event that either ends a statement (outside a
    transaction) or a transaction.

    A table map event can *never* end a transaction or a statement, so we
    just step the relay log position.
  */

  if (likely(!error))
    rli->inc_event_relay_log_pos();

  DBUG_RETURN(error);
}
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifndef MYSQL_CLIENT
bool Table_map_log_event::write_data_header(IO_CACHE *file)
{
6006
  DBUG_ASSERT(m_table_id != ~0UL);
6007 6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029
  byte buf[TABLE_MAP_HEADER_LEN];
  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);

  byte const dbuf[]= { m_dblen };
  byte const tbuf[]= { m_tbllen };

unknown's avatar
unknown committed
6030
  char cbuf[sizeof(m_colcnt)];
unknown's avatar
unknown committed
6031
  char *const cbuf_end= net_store_length((char*) cbuf, (uint) m_colcnt);
unknown's avatar
unknown committed
6032
  DBUG_ASSERT(static_cast<my_size_t>(cbuf_end - cbuf) <= sizeof(cbuf));
6033

6034
  return (my_b_safe_write(file, dbuf,      sizeof(dbuf)) ||
6035
          my_b_safe_write(file, (const byte*)m_dbnam,   m_dblen+1) ||
6036
          my_b_safe_write(file, tbuf,      sizeof(tbuf)) ||
6037
          my_b_safe_write(file, (const byte*)m_tblnam,  m_tbllen+1) ||
unknown's avatar
unknown committed
6038
          my_b_safe_write(file, reinterpret_cast<byte*>(cbuf),
unknown's avatar
Merge  
unknown committed
6039
                          cbuf_end - (char*) cbuf) ||
6040
          my_b_safe_write(file, reinterpret_cast<byte*>(m_coltype), m_colcnt));
6041 6042 6043 6044 6045 6046 6047 6048 6049 6050
 }
#endif

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

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

6051
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
6052 6053 6054
void Table_map_log_event::pack_info(Protocol *protocol)
{
    char buf[256];
unknown's avatar
unknown committed
6055 6056
    my_size_t bytes= my_snprintf(buf, sizeof(buf),
                                 "table_id: %lu (%s.%s)",
6057
                              m_table_id, m_dbnam, m_tblnam);
6058 6059
    protocol->store(buf, bytes, &my_charset_bin);
}
6060 6061
#endif

6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078

#endif


#ifdef MYSQL_CLIENT
void Table_map_log_event::print(FILE *file, PRINT_EVENT_INFO *print_event_info)
{
  if (!print_event_info->short_form)
  {
    print_header(file, print_event_info);
    fprintf(file, "\tTable_map: `%s`.`%s` mapped to number %lu\n",
            m_dbnam, m_tblnam, m_table_id);
    print_base64(file, print_event_info);
  }
}
#endif

6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093 6094 6095 6096 6097
#ifndef DBUG_OFF
static void
print_column_values(char const *text, THD *thd, TABLE *table)
{
  THD *old_thd= table->in_use;
  if (table->in_use == NULL)
    table->in_use= thd;
  for (Field **fptr= table->field ; *fptr ; ++fptr)
  {
    char buf[MAX_FIELD_WIDTH];
    String str(buf, sizeof(buf), system_charset_info);
    (*fptr)->val_str(&str);
    DBUG_PRINT("info", ("%s for column %d is '%s'", 
                        text, fptr - table->field, str.c_ptr()));
  }
  table->in_use= old_thd;
}
#endif

6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147
/**************************************************************************
	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)
int Write_rows_log_event::do_before_row_operations(TABLE *table)
{
  int error= 0;

  /*
    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;

unknown's avatar
unknown committed
6148 6149
  table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);  // Needed for ndbcluster
  table->file->extra(HA_EXTRA_IGNORE_NO_KEY);   // Needed for ndbcluster
6150 6151 6152 6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181
  /*
    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.
  */
  table->file->start_bulk_insert(0);
  /*
    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).
  */
  table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
  return error;
}

int Write_rows_log_event::do_after_row_operations(TABLE *table, int error)
{
  if (error == 0)
    error= table->file->end_bulk_insert();
  return error;
}

6182 6183 6184 6185
int Write_rows_log_event::do_prepare_row(THD *thd, RELAY_LOG_INFO *rli,
                                         TABLE *table,
                                         char const *row_start,
                                         char const **row_end)
6186 6187
{
  DBUG_ASSERT(table != NULL);
6188 6189 6190 6191 6192 6193 6194 6195 6196 6197
  DBUG_ASSERT(row_start && row_end);

  int error;
  error= unpack_row(rli,
                    table, m_width, (byte*)table->record[0],
                    row_start, &m_cols, row_end, &m_master_reclength);
#ifndef DBUG_OFF
  print_column_values("Unpacked value", thd, table);
#endif
  return error;
6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252
}

/*
  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;
}

/* Anonymous namespace for template functions/classes */
namespace {

  /*
    Smart pointer that will automatically call my_afree (a macro) when
    the pointer goes out of scope.  This is used so that I do not have
    to remember to call my_afree() before each return.  There is no
    overhead associated with this, since all functions are inline.

    I (Matz) would prefer to use the free function as a template
    parameter, but that is not possible when the "function" is a
    macro.
  */
  template <class Obj>
  class auto_afree_ptr
  {
    Obj* m_ptr;
  public:
    auto_afree_ptr(Obj* ptr) : m_ptr(ptr) { }
    ~auto_afree_ptr() { if (m_ptr) my_afree(m_ptr); }
    void assign(Obj* ptr) {
      /* Only to be called if it hasn't been given a value before. */
      DBUG_ASSERT(m_ptr == NULL);
      m_ptr= ptr;
    }
    Obj* get() { return m_ptr; }
  };

}


/*
  Replace the provided record in the database.

  Similar to how it is done in <code>mysql_insert()</code>, we first
  try to do a <code>ha_write_row()</code> and of that fails due to
  duplicated keys (or indices), we do an <code>ha_update_row()</code>
  or a <code>ha_delete_row()</code> instead.

  @param thd    Thread context for writing the record.
  @param table  Table to which record should be written.
6253 6254 6255
  @param master_reclength
         Offset to first column that is not present on the master,
         alternatively the length of the record on the master side.
6256 6257 6258
  @return Error code on failure, 0 on success.
 */
static int
6259 6260 6261
replace_record(THD *thd, TABLE *table,
               ulong const master_reclength,
               uint const master_fields)
6262
{
6263
  DBUG_ENTER("replace_record");
6264 6265 6266 6267 6268 6269
  DBUG_ASSERT(table != NULL && thd != NULL);

  int error;
  int keynum;
  auto_afree_ptr<char> key(NULL);

6270 6271 6272 6273
#ifndef DBUG_OFF
  print_column_values("Starting write value", thd, table);
#endif

6274 6275 6276 6277 6278
  while ((error= table->file->ha_write_row(table->record[0])))
  {
    if ((keynum= table->file->get_dup_key(error)) < 0)
    {
      /* We failed to retrieve the duplicate key */
6279
      DBUG_RETURN(HA_ERR_FOUND_DUPP_KEY);
6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295
    }

    /*
       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.
     */
    if (table->file->table_flags() & HA_DUPP_POS)
    {
      error= table->file->rnd_pos(table->record[1], table->file->dupp_ref);
      if (error)
6296
        DBUG_RETURN(error);
6297 6298 6299 6300 6301
    }
    else
    {
      if (table->file->extra(HA_EXTRA_FLUSH_CACHE))
      {
6302
        DBUG_RETURN(my_errno);
6303 6304 6305 6306 6307 6308
      }

      if (key.get() == NULL)
      {
        key.assign(static_cast<char*>(my_alloca(table->s->max_unique_length)));
        if (key.get() == NULL)
6309
          DBUG_RETURN(ENOMEM);
6310 6311
      }

6312 6313 6314
      key_copy((byte*)key.get(), table->record[0], table->key_info + keynum, 0);
      error= table->file->index_read_idx(table->record[1], keynum, 
                                         (const byte*)key.get(),
6315 6316 6317
                                         table->key_info[keynum].key_length,
                                         HA_READ_KEY_EXACT);
      if (error)
6318
        DBUG_RETURN(error);
6319 6320 6321 6322 6323 6324 6325
    }

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

6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 6376 6377 6378
       First we copy the columns into table->record[0] that are not
       present on the master from table->record[1], if there are any.
    */

    DBUG_PRINT("info", ("Copying to %p from offset %u to %u", 
                         table->record[0], 
                         master_reclength, table->s->reclength));
#ifndef DBUG_OFF
    print_column_values("After copy value", thd, table);
#endif
    if (master_reclength < table->s->reclength)
      bmove_align(table->record[0] + master_reclength,
                  table->record[1] + master_reclength,
                  table->s->reclength - master_reclength);
    
    /*
      Bit columns are special.  We iterate over all the remaining
      columns and copy the "extra" bits to the new record.  This is
      not a very good solution: it should be refactored on
      opportunity.

      REFACTORING SUGGESTION (Matz).  Introduce a member function
      similar to move_field_offset() called copy_field_offset() to
      copy field values and implement it for all Field subclasses. Use
      this function to copy data from the found record to the record
      that are going to be inserted.

      The copy_field_offset() function need to be a virtual function,
      which in this case will prevent copying an entire range of
      fields efficiently.
     */
    {
      Field **field_ptr= table->field + master_fields;
      for ( ; *field_ptr ; ++field_ptr)
      {
        switch ((*field_ptr)->real_type())
        {
        default:
          /* Nothing to do */
          break;

        case FIELD_TYPE_BIT:
          Field_bit *f= static_cast<Field_bit*>(*field_ptr);
          my_ptrdiff_t const offset= table->record[1] - table->record[0];
          uchar const bits=
            get_rec_bits(f->bit_ptr + offset, f->bit_ofs, f->bit_len);
          set_rec_bits(bits, f->bit_ptr, f->bit_ofs, f->bit_len);
          break;
        }
      }
    }
    
    /*
6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397
       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())
    {
      error=table->file->ha_update_row(table->record[1],
                                       table->record[0]);
6398
      DBUG_RETURN(error);
6399 6400 6401 6402
    }
    else
    {
      if ((error= table->file->ha_delete_row(table->record[1])))
6403
        DBUG_RETURN(error);
6404 6405 6406
      /* Will retry ha_write_row() with the offending row removed. */
    }
  }
6407
  DBUG_RETURN(error);
6408 6409 6410 6411 6412
}

int Write_rows_log_event::do_exec_row(TABLE *table)
{
  DBUG_ASSERT(table != NULL);
6413
  int error= replace_record(thd, table, m_master_reclength, m_width);
6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434
  return error;
}
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Write_rows_log_event::print(FILE *file, PRINT_EVENT_INFO* print_event_info)
{
  if (!print_event_info->short_form)
  {
    print_header(file, print_event_info);
    fprintf(file, "\tWrite_rows: table id %lu", m_table_id);
    print_base64(file, print_event_info);
  }
}
#endif

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

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
6435 6436 6437 6438 6439 6440
/*
  Compares table->record[0] and table->record[1]

  Returns TRUE if different.
*/
static bool record_compare(TABLE *table)
6441
{
6442 6443 6444 6445 6446 6447 6448 6449 6450
  if (table->s->blob_fields + table->s->varchar_fields == 0)
    return cmp_record(table,record[1]);
  /* Compare null bits */
  if (memcmp(table->null_flags,
	     table->null_flags+table->s->rec_buff_length,
	     table->s->null_bytes))
    return TRUE;				// Diff in NULL value
  /* Compare updated fields */
  for (Field **ptr=table->field ; *ptr ; ptr++)
6451
  {
6452 6453
    if ((*ptr)->cmp_binary_offset(table->s->rec_buff_length))
      return TRUE;
6454
  }
6455
  return FALSE;
6456 6457 6458 6459 6460 6461 6462 6463
}


/*
  Find the row given by 'key', if the table has keys, or else use a table scan
  to find (and fetch) the row.  If the engine allows random access of the
  records, a combination of position() and rnd_pos() will be used.
 */
6464
static int find_and_fetch_row(TABLE *table, byte *key)
6465 6466 6467
{
  DBUG_ENTER("find_and_fetch_row(TABLE *table, byte *key, byte *record)");
  DBUG_PRINT("enter", ("table=%p, key=%p, record=%p",
6468
		       table, key, table->record[1]));
6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479

  DBUG_ASSERT(table->in_use != NULL);

  if ((table->file->table_flags() & HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS)
      && table->s->primary_key < MAX_KEY)
  {
    /*
      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
6480
      the "cursor" (i.e., record[0] in this case) at the correct row.
6481 6482 6483 6484 6485
    */
    table->file->position(table->record[0]);
    DBUG_RETURN(table->file->rnd_pos(table->record[0], table->file->ref));
  }

6486
  DBUG_ASSERT(table->record[1]);
6487

unknown's avatar
unknown committed
6488 6489 6490
  /* We need to retrieve all fields */
  table->file->ha_set_all_bits_in_read_set();

6491 6492 6493
  if (table->s->keys > 0)
  {
    int error;
6494 6495 6496 6497 6498 6499
      /*
        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.
      */
6500 6501 6502
    my_ptrdiff_t const pos=
      table->s->null_bytes > 0 ? table->s->null_bytes - 1 : 0;
    table->record[1][pos]= 0xFF;
6503 6504 6505
    if ((error= table->file->index_read(table->record[1], key,
                                        table->key_info->key_length,
                                        HA_READ_KEY_EXACT)))
6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527
    {
      table->file->print_error(error, MYF(0));
      DBUG_RETURN(error);
    }

    /*
      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.
     */
    if (table->key_info->flags & HA_NOSAME)
      DBUG_RETURN(0);

6528
    while (record_compare(table))
6529 6530
    {
      int error;
6531 6532 6533 6534 6535 6536
      /*
        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.
      */
6537 6538 6539
      my_ptrdiff_t const pos=
        table->s->null_bytes > 0 ? table->s->null_bytes - 1 : 0;
      table->record[1][pos]= 0xFF;
6540
      if ((error= table->file->index_next(table->record[1])))
6541 6542 6543 6544 6545 6546 6547 6548 6549 6550 6551 6552 6553
      {
	table->file->print_error(error, MYF(0));
	DBUG_RETURN(error);
      }
    }
  }
  else
  {
    /* Continue until we find the right record or have made a full loop */
    int restart_count= 0; // Number of times scanning has restarted from top
    int error= 0;
    do
    {
6554 6555 6556 6557 6558 6559
      /*
        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.
      */
6560 6561 6562
      my_ptrdiff_t const pos=
        table->s->null_bytes > 0 ? table->s->null_bytes - 1 : 0;
      table->record[1][pos]= 0xFF;
6563
      error= table->file->rnd_next(table->record[1]);
6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579
      switch (error)
      {
      case 0:
      case HA_ERR_RECORD_DELETED:
	break;

      case HA_ERR_END_OF_FILE:
	if (++restart_count < 2)
	  table->file->ha_rnd_init(1);
	break;

      default:
	table->file->print_error(error, MYF(0));
	DBUG_RETURN(error);
      }
    }
6580
    while (restart_count < 2 && record_compare(table));
6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599

    DBUG_ASSERT(error == HA_ERR_END_OF_FILE || error == 0);
    DBUG_RETURN(error);
  }

  DBUG_RETURN(0);
}
#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)
#ifdef HAVE_REPLICATION
6600
  ,m_memory(NULL), m_key(NULL), m_after_image(NULL)
6601 6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616
#endif
{
}
#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)
#if defined(MYSQL_CLIENT)
  : Rows_log_event(buf, event_len, DELETE_ROWS_EVENT, description_event)
#else
  : Rows_log_event(buf, event_len, DELETE_ROWS_EVENT, description_event),
6617
    m_memory(NULL), m_key(NULL), m_after_image(NULL)
6618 6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631
#endif
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
int Delete_rows_log_event::do_before_row_operations(TABLE *table)
{
  DBUG_ASSERT(m_memory == NULL);

  if ((table->file->table_flags() & HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS) &&
      table->s->primary_key < MAX_KEY)
  {
    /*
6632
      We don't need to allocate any memory for m_after_image and
6633 6634 6635 6636 6637 6638 6639 6640 6641 6642 6643
      m_key since they are not used.
    */
    return 0;
  }

  int error= 0;

  if (table->s->keys > 0)
  {
    m_memory=
      my_multi_malloc(MYF(MY_WME),
6644
		      &m_after_image, table->s->reclength,
6645 6646 6647 6648 6649
		      &m_key, table->key_info->key_length,
		      NULL);
  }
  else
  {
6650 6651
    m_after_image= (byte*)my_malloc(table->s->reclength, MYF(MY_WME));
    m_memory= (gptr)m_after_image;
6652 6653 6654 6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666 6667 6668 6669 6670 6671 6672 6673 6674 6675 6676
    m_key= NULL;
  }
  if (!m_memory)
    return HA_ERR_OUT_OF_MEM;

  if (table->s->keys > 0)
  {
    /* We have a key: search the table using the index */
    if (!table->file->inited)
      error= table->file->ha_index_init(0, FALSE);
  }
  else
  {
    /* We doesn't have a key: search the table using rnd_next() */
    error= table->file->ha_rnd_init(1);
  }

  return error;
}

int Delete_rows_log_event::do_after_row_operations(TABLE *table, int error)
{
  /*error= ToDo:find out what this should really be, this triggers close_scan in nbd, returning error?*/
  table->file->ha_index_or_rnd_end();
  my_free(m_memory, MYF(MY_ALLOW_ZERO_PTR)); // Free for multi_malloc
6677
  m_memory= NULL;
6678
  m_after_image= NULL;
6679
  m_key= NULL;
6680 6681 6682 6683

  return error;
}

6684 6685 6686 6687
int Delete_rows_log_event::do_prepare_row(THD *thd, RELAY_LOG_INFO *rli,
                                          TABLE *table,
                                          char const *row_start,
                                          char const **row_end)
6688
{
6689 6690
  int error;
  DBUG_ASSERT(row_start && row_end);
6691 6692 6693 6694 6695 6696
  /*
    This assertion actually checks that there is at least as many
    columns on the slave as on the master.
  */
  DBUG_ASSERT(table->s->fields >= m_width);

6697 6698 6699
  error= unpack_row(rli,
                    table, m_width, table->record[0], 
                    row_start, &m_cols, row_end, &m_master_reclength);
6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710
  /*
    If we will access rows using the random access method, m_key will
    be set to NULL, so we do not need to make a key copy in that case.
   */
  if (m_key)
  {
    KEY *const key_info= table->key_info;

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

6711
  return error;
6712 6713 6714 6715 6716 6717
}

int Delete_rows_log_event::do_exec_row(TABLE *table)
{
  DBUG_ASSERT(table != NULL);

6718
  int error= find_and_fetch_row(table, m_key);
6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742 6743 6744 6745 6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794 6795
  if (error)
    return error;

  /*
     Now we should have the right row to delete.  We are using
     record[0] since it is guaranteed to point to a record with the
     correct value.
  */
  error= table->file->ha_delete_row(table->record[0]);

  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)
{
  if (!print_event_info->short_form)
  {
    print_header(file, print_event_info);
    fprintf(file, "\tDelete_rows: table id %lu", m_table_id);
    print_base64(file, print_event_info);
  }
}
#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,
                                             ulong tid, MY_BITMAP const *cols,
                                             bool is_transactional)
: Rows_log_event(thd_arg, tbl_arg, tid, cols, is_transactional)
#ifdef HAVE_REPLICATION
  , m_memory(NULL), m_key(NULL)
#endif
{
}
#endif /* !defined(MYSQL_CLIENT) */

/*
  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)
#if defined(MYSQL_CLIENT)
  : Rows_log_event(buf, event_len, UPDATE_ROWS_EVENT, description_event)
#else
  : Rows_log_event(buf, event_len, UPDATE_ROWS_EVENT, description_event),
    m_memory(NULL), m_key(NULL)
#endif
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
int Update_rows_log_event::do_before_row_operations(TABLE *table)
{
  DBUG_ASSERT(m_memory == NULL);

  int error= 0;

  if (table->s->keys > 0)
  {
    m_memory=
      my_multi_malloc(MYF(MY_WME),
6796
		      &m_after_image, table->s->reclength,
6797 6798 6799 6800 6801
		      &m_key, table->key_info->key_length,
		      NULL);
  }
  else
  {
6802 6803
    m_after_image= (byte*)my_malloc(table->s->reclength, MYF(MY_WME));
    m_memory= (gptr)m_after_image;
6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829
    m_key= NULL;
  }
  if (!m_memory)
    return HA_ERR_OUT_OF_MEM;

  if (table->s->keys > 0)
  {
    /* We have a key: search the table using the index */
    if (!table->file->inited)
      error= table->file->ha_index_init(0, FALSE);
  }
  else
  {
    /* We doesn't have a key: search the table using rnd_next() */
    error= table->file->ha_rnd_init(1);
  }
  table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;

  return error;
}

int Update_rows_log_event::do_after_row_operations(TABLE *table, int error)
{
  /*error= ToDo:find out what this should really be, this triggers close_scan in nbd, returning error?*/
  table->file->ha_index_or_rnd_end();
  my_free(m_memory, MYF(MY_ALLOW_ZERO_PTR));
6830
  m_memory= NULL;
6831
  m_after_image= NULL;
6832
  m_key= NULL;
6833 6834 6835 6836

  return error;
}

6837 6838 6839 6840
int Update_rows_log_event::do_prepare_row(THD *thd, RELAY_LOG_INFO *rli,
                                          TABLE *table,
                                          char const *row_start,
                                          char const **row_end)
6841
{
6842 6843
  int error;
  DBUG_ASSERT(row_start && row_end);
6844 6845 6846 6847 6848 6849 6850
  /*
    This assertion actually checks that there is at least as many
    columns on the slave as on the master.
  */
  DBUG_ASSERT(table->s->fields >= m_width);

  /* record[0] is the before image for the update */
6851 6852 6853 6854
  error= unpack_row(rli,
                    table, m_width, table->record[0],
                    row_start, &m_cols, row_end, &m_master_reclength);
  row_start = *row_end;
6855
  /* m_after_image is the after image for the update */
6856 6857 6858
  error= unpack_row(rli,
                    table, m_width, m_after_image,
                    row_start, &m_cols, row_end, &m_master_reclength);
6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870

  /*
    If we will access rows using the random access method, m_key will
    be set to NULL, so we do not need to make a key copy in that case.
   */
  if (m_key)
  {
    KEY *const key_info= table->key_info;

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

6871
  return error;
6872 6873 6874 6875 6876 6877
}

int Update_rows_log_event::do_exec_row(TABLE *table)
{
  DBUG_ASSERT(table != NULL);

6878
  int error= find_and_fetch_row(table, m_key);
6879 6880 6881
  if (error)
    return error;

6882
  /*
6883 6884 6885 6886 6887 6888 6889 6890 6891
    We have to ensure that the new record (i.e., the after image) is
    in record[0] and the old record (i.e., the before image) is in
    record[1].  This since some storage engines require this (for
    example, the partition engine).

    Since find_and_fetch_row() puts the fetched record (i.e., the old
    record) in record[0], we have to move it out of the way and into
    record[1]. After that, we can put the new record (i.e., the after
    image) into record[0].
6892
  */
6893 6894
  bmove_align(table->record[1], table->record[0], table->s->reclength);
  bmove_align(table->record[0], m_after_image, table->s->reclength);
6895

6896
  /*
6897 6898 6899
    Now we should have the right row to update.  The old row (the one
    we're looking for) has to be in record[1] and the new row has to
    be in record[0] for all storage engines to work correctly.
6900
  */
6901
  error= table->file->ha_update_row(table->record[1], table->record[0]);
6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920

  return error;
}
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Update_rows_log_event::print(FILE *file,
				  PRINT_EVENT_INFO* print_event_info)
{
  if (!print_event_info->short_form)
  {
    print_header(file, print_event_info);
    fprintf(file, "\tUpdate_rows: table id %lu", m_table_id);
    print_base64(file, print_event_info);
  }
}
#endif

#endif /* defined(HAVE_ROW_BASED_REPLICATION) */