--source include/galera_cluster.inc
--source include/have_innodb.inc

#
# Test the effect of Cluster Configuration Change on a concurrently-running SR transaction
# We use SET GLOBAL wsrep_cluster_address = '' to cause the slave (node_2) to temporarily
# leave the cluster.
#

# Save original auto_increment_offset values.
--let $node_1=node_1
--let $node_2=node_2
--source ../../galera/include/auto_increment_offset_save.inc

# Start with a clean slate
--connection node_2
SELECT COUNT(*) = 0 FROM mysql.wsrep_streaming_log;

--connection node_1
SELECT COUNT(*) = 0 FROM mysql.wsrep_streaming_log;
CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;

--let $wsrep_trx_fragment_size_orig = `SELECT @@wsrep_trx_fragment_size`
SET SESSION wsrep_trx_fragment_size = 1;

SET AUTOCOMMIT=OFF;
START TRANSACTION;
INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (2);
INSERT INTO t1 VALUES (3);
INSERT INTO t1 VALUES (4);
INSERT INTO t1 VALUES (5);

SELECT COUNT(*) > 0 FROM mysql.wsrep_streaming_log;

--connection node_2
SELECT COUNT(*) > 0 FROM mysql.wsrep_streaming_log;

#
# Trigger CC . The transaction should be able to continue
#

--connection node_2
--let $wsrep_cluster_address_orig = `SELECT @@wsrep_cluster_address`
SET GLOBAL wsrep_cluster_address = '';

# Wait until the node_2 disconnects from the cluster
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 'Disconnected' FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_status'
--source include/wait_condition.inc
SET SESSION wsrep_sync_wait = default;

--connection node_1

# Wait until the node_1 sees the cluster configuration change
--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc

# Continue generating events in the transaction 

INSERT INTO t1 VALUES (6);
INSERT INTO t1 VALUES (7);
INSERT INTO t1 VALUES (8);
INSERT INTO t1 VALUES (9);
INSERT INTO t1 VALUES (10);

SELECT COUNT(*) > 0 FROM mysql.wsrep_streaming_log;

# Restore cluster

--connection node_2
--disable_query_log
--eval SET GLOBAL wsrep_cluster_address='$wsrep_cluster_address_orig';
--enable_query_log
--source include/galera_wait_ready.inc

# Confirm that the SR table still contains entries from ongoing transaction
SELECT COUNT(*) > 0 FROM mysql.wsrep_streaming_log;

# Continue and finalize transaction
--connection node_1
INSERT INTO t1 VALUES (11);
INSERT INTO t1 VALUES (12);
INSERT INTO t1 VALUES (13);
INSERT INTO t1 VALUES (14);
INSERT INTO t1 VALUES (16);
COMMIT;

SELECT COUNT(*) = 0 FROM mysql.wsrep_streaming_log;

# Confirm that transaction was replicated properly
# and SR table is cleaned up afterwards.

--connection node_2
--let $wait_condition = SELECT COUNT(*) = 15 FROM t1;
--source include/wait_condition.inc

SELECT COUNT(*) = 0 FROM mysql.wsrep_streaming_log;

DROP TABLE t1;

CALL mtr.add_suppression("points to own listening address, blacklisting");

# Restore original auto_increment_offset values.
--source ../../galera/include/auto_increment_offset_restore.inc