MDEV-29426 Fix memory leak in CONNECT JSON/BSON (#2255)

* MDEV-29426 Fix memory leak in CONNECT JSON/BSON

If information is being gathered on JSON/BSON tables we leak the heap
allocated to the table class. With this fix we close and cleanup
instead, just as we do for XML tables.

storage/connect/connect.cc

@@ -546,7 +546,8 @@ int CntCloseTable(PGLOBAL g, PTDB tdbp, bool nox, bool abort)
 	if (!tdbp)
 		return rc;                           // Nothing to do
 	else if (tdbp->GetUse() != USE_OPEN) {
-		if (tdbp->GetAmType() == TYPE_AM_XML)
+		if (tdbp->GetAmType() == TYPE_AM_XML ||
+			tdbp->GetAmType() == TYPE_AM_JSN)
 			tdbp->CloseDB(g);                  // Opened by GetMaxSize
 
 		return rc;

storage/connect/mysql-test/connect/r/bson.result

@@ -515,3 +515,27 @@ Beth	4	Food	17.00
 Beth	4	Beer	15.00
 Janet	4	Car	17.00
 DROP TABLE t1, t2, t3, t4;
+#
+# MDEV-29426 memory leak on "SHOW INDEX"
+#
+CREATE TABLE t1
+(
+ISBN CHAR(15) NOT NULL,
+Language CHAR(2) JPATH='$.LANG',
+Subject CHAR(32) JPATH='$.SUBJECT',
+AuthorFN CHAR(128) JPATH='$.AUTHOR[*].FIRSTNAME',
+AuthorLN CHAR(128) JPATH='$.AUTHOR[*].LASTNAME',
+Title CHAR(32) JPATH='$.TITLE',
+Translation CHAR(32) JPATH='$.TRANSLATED.PREFIX',
+TranslatorFN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.FIRSTNAME',
+TranslatorLN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.LASTNAME',
+Publisher CHAR(20) JPATH='$.PUBLISHER.NAME',
+Location CHAR(16) JPATH='$.PUBLISHER.PLACE',
+Year int(4) JPATH='$.DATEPUB',
+INDEX IX(ISBN)
+)
+ENGINE=CONNECT TABLE_TYPE=BSON FILE_NAME='bib0.json' LRECL=320 OPTION_LIST='Pretty=0';
+SHOW INDEX FROM t1;
+Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment
+t1	1	IX	1	ISBN	A	NULL	NULL	NULL		XINDEX		
+DROP TABLE t1;

storage/connect/mysql-test/connect/r/json.result

@@ -515,3 +515,27 @@ Beth	4	Food	17.00
 Beth	4	Beer	15.00
 Janet	4	Car	17.00
 DROP TABLE t1, t2, t3, t4;
+#
+# MDEV-29426 memory leak on "SHOW INDEX"
+#
+CREATE TABLE t1
+(
+ISBN CHAR(15) NOT NULL,
+Language CHAR(2) JPATH='$.LANG',
+Subject CHAR(32) JPATH='$.SUBJECT',
+AuthorFN CHAR(128) JPATH='$.AUTHOR[*].FIRSTNAME',
+AuthorLN CHAR(128) JPATH='$.AUTHOR[*].LASTNAME',
+Title CHAR(32) JPATH='$.TITLE',
+Translation CHAR(32) JPATH='$.TRANSLATED.PREFIX',
+TranslatorFN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.FIRSTNAME',
+TranslatorLN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.LASTNAME',
+Publisher CHAR(20) JPATH='$.PUBLISHER.NAME',
+Location CHAR(16) JPATH='$.PUBLISHER.PLACE',
+Year int(4) JPATH='$.DATEPUB',
+INDEX IX(ISBN)
+)
+ENGINE=CONNECT TABLE_TYPE=JSON FILE_NAME='bib0.json' LRECL=320 OPTION_LIST='Pretty=0';
+SHOW INDEX FROM t1;
+Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment
+t1	1	IX	1	ISBN	A	NULL	NULL	NULL		XINDEX		
+DROP TABLE t1;

storage/connect/mysql-test/connect/t/bson.test

@@ -282,6 +282,29 @@ SELECT * FROM t1;
 SELECT * FROM t1 WHERE WEEK = 4;
 DROP TABLE t1, t2, t3, t4;
 
+--echo #
+--echo # MDEV-29426 memory leak on "SHOW INDEX"
+--echo #
+CREATE TABLE t1
+(
+  ISBN CHAR(15) NOT NULL,
+  Language CHAR(2) JPATH='$.LANG',
+  Subject CHAR(32) JPATH='$.SUBJECT',
+  AuthorFN CHAR(128) JPATH='$.AUTHOR[*].FIRSTNAME',
+  AuthorLN CHAR(128) JPATH='$.AUTHOR[*].LASTNAME',
+  Title CHAR(32) JPATH='$.TITLE',
+  Translation CHAR(32) JPATH='$.TRANSLATED.PREFIX',
+  TranslatorFN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.FIRSTNAME',
+  TranslatorLN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.LASTNAME',
+  Publisher CHAR(20) JPATH='$.PUBLISHER.NAME',
+  Location CHAR(16) JPATH='$.PUBLISHER.PLACE',
+  Year int(4) JPATH='$.DATEPUB',
+  INDEX IX(ISBN)
+)
+ENGINE=CONNECT TABLE_TYPE=BSON FILE_NAME='bib0.json' LRECL=320 OPTION_LIST='Pretty=0';
+SHOW INDEX FROM t1;
+DROP TABLE t1;
+
 #
 # Clean up
 #

storage/connect/mysql-test/connect/t/json.test

@@ -282,6 +282,30 @@ SELECT * FROM t1;
 SELECT * FROM t1 WHERE WEEK = 4;
 DROP TABLE t1, t2, t3, t4;
 
+
+--echo #
+--echo # MDEV-29426 memory leak on "SHOW INDEX"
+--echo #
+CREATE TABLE t1
+(
+  ISBN CHAR(15) NOT NULL,
+  Language CHAR(2) JPATH='$.LANG',
+  Subject CHAR(32) JPATH='$.SUBJECT',
+  AuthorFN CHAR(128) JPATH='$.AUTHOR[*].FIRSTNAME',
+  AuthorLN CHAR(128) JPATH='$.AUTHOR[*].LASTNAME',
+  Title CHAR(32) JPATH='$.TITLE',
+  Translation CHAR(32) JPATH='$.TRANSLATED.PREFIX',
+  TranslatorFN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.FIRSTNAME',
+  TranslatorLN CHAR(80) JPATH='$.TRANSLATED.TRANSLATOR.LASTNAME',
+  Publisher CHAR(20) JPATH='$.PUBLISHER.NAME',
+  Location CHAR(16) JPATH='$.PUBLISHER.PLACE',
+  Year int(4) JPATH='$.DATEPUB',
+  INDEX IX(ISBN)
+)
+ENGINE=CONNECT TABLE_TYPE=JSON FILE_NAME='bib0.json' LRECL=320 OPTION_LIST='Pretty=0';
+SHOW INDEX FROM t1;
+DROP TABLE t1;
+
 #
 # Clean up
 #