WSREP debug log levels support

Global variable wsrep_debug now can be used to filter wsrep-lib messages based on debug level provided.
Type of wsrep_debug is now set to be unsigned int, so tests and configuration files changed accordingly.

include/mysql/service_wsrep.h

@@ -122,7 +122,7 @@ extern struct wsrep_service_st {
 #else
 
 #define MYSQL_SERVICE_WSREP_STATIC_INCLUDED
-extern my_bool wsrep_debug;
+extern ulong   wsrep_debug;
 extern my_bool wsrep_log_conflicts;
 extern my_bool wsrep_certify_nonPK;
 extern my_bool wsrep_load_data_splitting;

mysql-test/suite/galera/r/galera_defaults.result

@@ -26,7 +26,7 @@ WSREP_CLUSTER_ADDRESS	gcomm://
 WSREP_CLUSTER_NAME	my_wsrep_cluster
 WSREP_CONVERT_LOCK_TO_TRX	OFF
 WSREP_DBUG_OPTION	
-WSREP_DEBUG	OFF
+WSREP_DEBUG	NONE
 WSREP_DESYNC	OFF
 WSREP_DIRTY_READS	OFF
 WSREP_DRUPAL_282555_WORKAROUND	OFF

mysql-test/suite/galera/t/galera_sst_mariabackup.cnf

@@ -3,7 +3,7 @@
 [mysqld]
 wsrep_sst_method=mariabackup
 wsrep_sst_auth="root:"
-wsrep_debug=ON
+wsrep_debug=1
 
 [mysqld.1]
 wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.size=1;pc.ignore_sb=true'

mysql-test/suite/galera/t/galera_sst_mariabackup_data_dir.cnf

@@ -3,7 +3,7 @@
 [mysqld]
 wsrep_sst_method=mariabackup
 wsrep_sst_auth="root:"
-wsrep_debug=ON
+wsrep_debug=1
 
 [mysqld.1]
 wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.size=1;pc.ignore_sb=true'

mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key.cnf

@@ -3,7 +3,7 @@
 [mysqld]
 wsrep_sst_method=mariabackup
 wsrep_sst_auth="root:"
-wsrep_debug=ON
+wsrep_debug=1 
 
 [SST]
 tkey=@ENV.MYSQL_TEST_DIR/std_data/cakey.pem

mysql-test/suite/galera/t/galera_sst_mariabackup_table_options.cnf

@@ -3,7 +3,7 @@
 [mysqld]
 wsrep_sst_method=mariabackup
 wsrep_sst_auth="root:"
-wsrep_debug=ON
+wsrep_debug=1
 
 [mysqld.1]
 wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.size=1;pc.ignore_sb=true'

mysql-test/suite/galera/t/galera_sst_mysqldump_with_key.cnf

@@ -14,7 +14,7 @@ wsrep_causal_reads=0
 wsrep_sync_wait=0
 
 [mysqld]
-wsrep_debug=ON
+wsrep_debug=1
 
 [client]
 ssl-ca=@ENV.MYSQL_TEST_DIR/std_data/cacert.pem

mysql-test/suite/sys_vars/r/sysvars_wsrep.result

@@ -115,18 +115,18 @@ READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	WSREP_DEBUG
 SESSION_VALUE	NULL
-GLOBAL_VALUE	OFF
+GLOBAL_VALUE	NONE
 GLOBAL_VALUE_ORIGIN	COMPILE-TIME
-DEFAULT_VALUE	OFF
+DEFAULT_VALUE	NONE
 VARIABLE_SCOPE	GLOBAL
-VARIABLE_TYPE	BOOLEAN
-VARIABLE_COMMENT	To enable debug level logging
+VARIABLE_TYPE	ENUM
+VARIABLE_COMMENT	WSREP debug level logging
 NUMERIC_MIN_VALUE	NULL
 NUMERIC_MAX_VALUE	NULL
 NUMERIC_BLOCK_SIZE	NULL
-ENUM_VALUE_LIST	OFF,ON
+ENUM_VALUE_LIST	NONE,SERVER,TRANSACTION,STREAMING,CLIENT
 READ_ONLY	NO
-COMMAND_LINE_ARGUMENT	OPTIONAL
+COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	WSREP_DESYNC
 SESSION_VALUE	NULL
 GLOBAL_VALUE	OFF

mysql-test/suite/sys_vars/r/wsrep_debug_basic.result

@@ -6,39 +6,41 @@ SET @wsrep_debug_global_saved = @@global.wsrep_debug;
 # default
 SELECT @@global.wsrep_debug;
 @@global.wsrep_debug
-0
+NONE
 
 # scope
 SELECT @@session.wsrep_debug;
 ERROR HY000: Variable 'wsrep_debug' is a GLOBAL variable
-SET @@global.wsrep_debug=OFF;
+SET @@global.wsrep_debug=0;
 SELECT @@global.wsrep_debug;
 @@global.wsrep_debug
-0
-SET @@global.wsrep_debug=ON;
+NONE
+SET @@global.wsrep_debug=1;
 SELECT @@global.wsrep_debug;
 @@global.wsrep_debug
-1
+SERVER
 
 # valid values
-SET @@global.wsrep_debug='OFF';
+SET @@global.wsrep_debug=NONE;
 SELECT @@global.wsrep_debug;
 @@global.wsrep_debug
-0
-SET @@global.wsrep_debug=ON;
+NONE
+SET @@global.wsrep_debug=SERVER;
 SELECT @@global.wsrep_debug;
 @@global.wsrep_debug
-1
+SERVER
 SET @@global.wsrep_debug=default;
 SELECT @@global.wsrep_debug;
 @@global.wsrep_debug
-0
+NONE
 
 # invalid values
 SET @@global.wsrep_debug=NULL;
 ERROR 42000: Variable 'wsrep_debug' can't be set to the value of 'NULL'
 SET @@global.wsrep_debug='junk';
 ERROR 42000: Variable 'wsrep_debug' can't be set to the value of 'junk'
+SET @@global.wsrep_debug=ON;
+ERROR 42000: Variable 'wsrep_debug' can't be set to the value of 'ON'
 
 # restore the initial value
 SET @@global.wsrep_debug = @wsrep_debug_global_saved;

mysql-test/suite/sys_vars/t/wsrep_debug_basic.test

@@ -14,16 +14,16 @@ SELECT @@global.wsrep_debug;
 --echo # scope
 --error ER_INCORRECT_GLOBAL_LOCAL_VAR
 SELECT @@session.wsrep_debug;
-SET @@global.wsrep_debug=OFF;
+SET @@global.wsrep_debug=0;
 SELECT @@global.wsrep_debug;
-SET @@global.wsrep_debug=ON;
+SET @@global.wsrep_debug=1;
 SELECT @@global.wsrep_debug;
 
 --echo
 --echo # valid values
-SET @@global.wsrep_debug='OFF';
+SET @@global.wsrep_debug=NONE;
 SELECT @@global.wsrep_debug;
-SET @@global.wsrep_debug=ON;
+SET @@global.wsrep_debug=SERVER;
 SELECT @@global.wsrep_debug;
 SET @@global.wsrep_debug=default;
 SELECT @@global.wsrep_debug;
@@ -34,6 +34,8 @@ SELECT @@global.wsrep_debug;
 SET @@global.wsrep_debug=NULL;
 --error ER_WRONG_VALUE_FOR_VAR
 SET @@global.wsrep_debug='junk';
+--error ER_WRONG_VALUE_FOR_VAR
+SET @@global.wsrep_debug=ON;
 
 --echo
 --echo # restore the initial value

sql/sys_vars.cc

@@ -5364,9 +5364,14 @@ static Sys_var_charptr Sys_wsrep_dbug_option(
        GLOBAL_VAR(wsrep_dbug_option),CMD_LINE(REQUIRED_ARG),
        IN_SYSTEM_CHARSET, DEFAULT(""));
 
-static Sys_var_mybool Sys_wsrep_debug(
-       "wsrep_debug", "To enable debug level logging",
-       GLOBAL_VAR(wsrep_debug), CMD_LINE(OPT_ARG), DEFAULT(FALSE));
+static const char *wsrep_debug_names[]=
+{ "NONE", "SERVER", "TRANSACTION", "STREAMING", "CLIENT", NullS };
+static Sys_var_enum Sys_wsrep_debug(
+       "wsrep_debug", "WSREP debug level logging",
+       GLOBAL_VAR(wsrep_debug), CMD_LINE(REQUIRED_ARG),
+       wsrep_debug_names, DEFAULT(0),
+       NO_MUTEX_GUARD, NOT_IN_BINLOG,
+       ON_CHECK(0), ON_UPDATE(wsrep_debug_update));
 
 static Sys_var_mybool Sys_wsrep_convert_LOCK_to_trx(
        "wsrep_convert_LOCK_to_trx", "To convert locking sessions "

sql/wsrep_mysqld.cc

@@ -85,7 +85,7 @@ const char *wsrep_data_home_dir;
 const char *wsrep_dbug_option;
 const char *wsrep_notify_cmd;
 
-my_bool wsrep_debug;                            // Enable debug level logging
+ulong   wsrep_debug;                            // Debug level logging
 my_bool wsrep_convert_LOCK_to_trx;              // Convert locking sessions to trx
 my_bool wsrep_auto_increment_control;           // Control auto increment variables
 my_bool wsrep_drupal_282555_workaround;         // Retry autoinc insert after dupkey
@@ -638,6 +638,7 @@ int wsrep_init_server()
                                   working_dir,
                                   initial_position,
                                   wsrep_max_protocol_version);
+    Wsrep_server_state::instance().debug_log_level(wsrep_debug);
   }
   catch (const wsrep::runtime_error& e)
   {

sql/wsrep_mysqld.h

@@ -64,7 +64,7 @@ extern const char* wsrep_data_home_dir;
 extern const char* wsrep_dbug_option;
 extern long        wsrep_slave_threads;
 extern int         wsrep_slave_count_change;
-extern MYSQL_PLUGIN_IMPORT my_bool wsrep_debug;
+extern ulong       wsrep_debug;
 extern my_bool     wsrep_convert_LOCK_to_trx;
 extern ulong       wsrep_retry_autocommit;
 extern my_bool     wsrep_auto_increment_control;

sql/wsrep_var.cc

@@ -430,6 +430,12 @@ bool wsrep_reject_queries_update(sys_var *self, THD* thd, enum_var_type type)
     return false;
 }
 
+bool wsrep_debug_update(sys_var *self, THD* thd, enum_var_type type)
+{
+    Wsrep_server_state::instance().debug_log_level(wsrep_debug);
+    return false;
+}
+
 static int wsrep_cluster_address_verify (const char* cluster_address_str)
 {
   /* There is no predefined address format, it depends on provider. */

sql/wsrep_var.h

@@ -100,6 +100,8 @@ extern bool wsrep_max_ws_size_update         UPDATE_ARGS;
 
 extern bool wsrep_reject_queries_update      UPDATE_ARGS;
 
+extern bool wsrep_debug_update               UPDATE_ARGS;
+
 #else  /* WITH_WSREP */
 
 #define wsrep_provider_init(X)

wsrep-lib @ af8383da

-Subproject commit 20b52ff1ddc3b2f547b7081471f46dcfa5efabc7
+Subproject commit af8383daf03bee80b8e54ce207fa9ef1f9d83f94