Write proper tests for MDEV-12634: Uninitialised ROW_MERGE_RESERVE_SI…

…ZE bytes

Introduce innodb_encrypt_log.combinations and prove that
the encryption and decryption take place during both
online ADD INDEX (WL#5266) and online table-rebuilding ALTER (WL#6625).

mysql-test/include/innodb_encrypt_log.combinations

@@ -0,0 +1,7 @@
+[crypt]
+innodb_encrypt_log=ON
+innodb_encryption_rotate_key_age=1
+plugin_load_add=$DEBUG_KEY_MANAGEMENT_SO
+
+[clear]
+skip_innodb_encrypt_log

mysql-test/include/innodb_encrypt_log.inc

@@ -0,0 +1,4 @@
+# The goal of including this file is to enable innodb_encrypt_log combinations
+# (see include/innodb_encrypt_log.combinations)
+
+--source include/have_innodb.inc

mysql-test/suite/innodb/r/innodb-index-online,crypt.rdiff

@@ -0,0 +1,20 @@
+--- innodb-index-online.result
++++ innodb-index-online,crypt.reject
+@@ -260,7 +260,7 @@
+ @merge_encrypt_1>@merge_encrypt_0, @merge_decrypt_1>@merge_decrypt_0,
+ @rowlog_encrypt_1>@rowlog_encrypt_0;
+ sort_balance	@merge_encrypt_1>@merge_encrypt_0	@merge_decrypt_1>@merge_decrypt_0	@rowlog_encrypt_1>@rowlog_encrypt_0
+-0	0	0	0
++0	1	1	1
+ SET DEBUG_SYNC = 'now SIGNAL dml2_done';
+ ERROR HY000: Creating index 'c2e' required more than 'innodb_online_alter_log_max_size' bytes of modification log. Please try again.
+ SELECT name, count FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE subsystem = 'ddl';
+@@ -364,7 +364,7 @@
+ @rowlog_encrypt_2-@rowlog_encrypt_1>0 as log_encrypted,
+ @rowlog_decrypt_2-@rowlog_decrypt_1>0 as log_decrypted;
+ sort_encrypted	sort_decrypted	log_encrypted	log_decrypted
+-0	0	0	0
++1	1	1	1
+ SELECT COUNT(c22f) FROM t1;
+ COUNT(c22f)
+ 320

mysql-test/suite/innodb/r/innodb-index-online.result

@@ -180,6 +180,15 @@ t1	CREATE TABLE `t1` (
   PRIMARY KEY (`c1`),
   KEY `c2d` (`c2`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1 STATS_PERSISTENT=1
+SET @merge_encrypt_0=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_encrypted');
+SET @merge_decrypt_0=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_decrypted');
+SET @rowlog_encrypt_0=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_rowlog_blocks_encrypted');
 SET DEBUG_SYNC = 'row_log_apply_before SIGNAL c2e_created WAIT_FOR dml2_done';
 SET lock_wait_timeout = 10;
 ALTER TABLE t1 DROP INDEX c2d, ADD INDEX c2e(c2),
@@ -209,6 +218,22 @@ BEGIN;
 UPDATE t1 SET c2 = c2 + 1;
 DELETE FROM t1;
 ROLLBACK;
+BEGIN;
+DELETE FROM t1;
+ROLLBACK;
+UPDATE t1 SET c2 = c2 + 1;
+BEGIN;
+UPDATE t1 SET c2 = c2 + 1;
+DELETE FROM t1;
+ROLLBACK;
+BEGIN;
+DELETE FROM t1;
+ROLLBACK;
+UPDATE t1 SET c2 = c2 + 1;
+BEGIN;
+UPDATE t1 SET c2 = c2 + 1;
+DELETE FROM t1;
+ROLLBACK;
 SELECT name, count FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE subsystem = 'ddl';
 name	count
 ddl_background_drop_indexes	0
@@ -220,6 +245,22 @@ INNER JOIN INFORMATION_SCHEMA.INNODB_SYS_FIELDS sf
 ON si.index_id = sf.index_id WHERE si.name = '?c2e';
 name	pos
 c2	0
+SET @merge_encrypt_1=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_encrypted');
+SET @merge_decrypt_1=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_decrypted');
+SET @rowlog_encrypt_1=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_rowlog_blocks_encrypted');
+SELECT
+(@merge_encrypt_1-@merge_encrypt_0)-
+(@merge_decrypt_1-@merge_decrypt_0) as sort_balance,
+@merge_encrypt_1>@merge_encrypt_0, @merge_decrypt_1>@merge_decrypt_0,
+@rowlog_encrypt_1>@rowlog_encrypt_0;
+sort_balance	@merge_encrypt_1>@merge_encrypt_0	@merge_decrypt_1>@merge_decrypt_0	@rowlog_encrypt_1>@rowlog_encrypt_0
+0	0	0	0
 SET DEBUG_SYNC = 'now SIGNAL dml2_done';
 ERROR HY000: Creating index 'c2e' required more than 'innodb_online_alter_log_max_size' bytes of modification log. Please try again.
 SELECT name, count FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE subsystem = 'ddl';
@@ -245,6 +286,18 @@ ddl_background_drop_indexes	0
 ddl_background_drop_tables	0
 ddl_online_create_index	0
 ddl_pending_alter_table	0
+SET @merge_encrypt_1=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_encrypted');
+SET @merge_decrypt_1=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_decrypted');
+SET @rowlog_encrypt_1=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_rowlog_blocks_encrypted');
+SET @rowlog_decrypt_1=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_rowlog_blocks_decrypted');
 SET DEBUG_SYNC = 'row_log_apply_before SIGNAL c2f_created WAIT_FOR dml3_done';
 ALTER TABLE t1 ADD INDEX c2f(c2);
 SET DEBUG_SYNC = 'now WAIT_FOR c2f_created';
@@ -262,6 +315,14 @@ BEGIN;
 UPDATE t1 SET c2 = c2 + 1;
 DELETE FROM t1;
 ROLLBACK;
+BEGIN;
+INSERT INTO t1 SELECT 320 + c1, c2, c3 FROM t1 WHERE c1 > 160;
+DELETE FROM t1 WHERE c1 > 320;
+ROLLBACK;
+BEGIN;
+UPDATE t1 SET c2 = c2 + 1;
+DELETE FROM t1;
+ROLLBACK;
 SELECT name, count FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE subsystem = 'ddl';
 name	count
 ddl_background_drop_indexes	0
@@ -278,6 +339,32 @@ ddl_background_drop_indexes	0
 ddl_background_drop_tables	0
 ddl_online_create_index	0
 ddl_pending_alter_table	0
+SET @merge_encrypt_2=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_encrypted');
+SET @merge_decrypt_2=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_merge_blocks_decrypted');
+SET @rowlog_encrypt_2=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_rowlog_blocks_encrypted');
+SET @rowlog_decrypt_2=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_encryption_n_rowlog_blocks_decrypted');
+SELECT
+(@merge_encrypt_2-@merge_encrypt_1)-
+(@merge_decrypt_2-@merge_decrypt_1) as sort_balance,
+(@rowlog_encrypt_2-@rowlog_encrypt_1)-
+(@rowlog_decrypt_2-@rowlog_decrypt_1) as log_balance;
+sort_balance	log_balance
+0	0
+SELECT
+@merge_encrypt_2-@merge_encrypt_1>0 as sort_encrypted,
+@merge_decrypt_2-@merge_decrypt_1>0 as sort_decrypted,
+@rowlog_encrypt_2-@rowlog_encrypt_1>0 as log_encrypted,
+@rowlog_decrypt_2-@rowlog_decrypt_1>0 as log_decrypted;
+sort_encrypted	sort_decrypted	log_encrypted	log_decrypted
+0	0	0	0
 SELECT COUNT(c22f) FROM t1;
 COUNT(c22f)
 320

mysql-test/suite/innodb/r/innodb-table-online,crypt.rdiff

@@ -0,0 +1,20 @@
+--- innodb-table-online.result
++++ innodb-table-online,crypt.reject
+@@ -254,7 +254,7 @@
+ @merge_encrypt_1>@merge_encrypt_0, @merge_decrypt_1>@merge_decrypt_0,
+ @rowlog_encrypt_1>@rowlog_encrypt_0;
+ sort_balance	@merge_encrypt_1>@merge_encrypt_0	@merge_decrypt_1>@merge_decrypt_0	@rowlog_encrypt_1>@rowlog_encrypt_0
+-0	0	0	0
++0	1	1	1
+ SET DEBUG_SYNC = 'now SIGNAL dml2_done';
+ # session con1
+ ERROR HY000: Creating index 'PRIMARY' required more than 'innodb_online_alter_log_max_size' bytes of modification log. Please try again.
+@@ -345,7 +345,7 @@
+ @rowlog_encrypt_2-@rowlog_encrypt_1>0 as log_encrypted,
+ @rowlog_decrypt_2-@rowlog_decrypt_1>0 as log_decrypted;
+ sort_encrypted	sort_decrypted	log_encrypted	log_decrypted
+-0	0	0	0
++1	1	1	1
+ ALTER TABLE t1 DROP PRIMARY KEY, ADD PRIMARY KEY c3p5(c3(5));
+ ERROR 23000: Duplicate entry '' for key 'PRIMARY'
+ UPDATE t1 SET c3 = NULL WHERE c3 = '';