add tests

maxscale-system-test/mysqlmon_backup.cpp

@@ -0,0 +1,112 @@
+/**
+ * MySQL Monitor crash safety test
+ *
+ * - Start MaxScale
+ * - Kill slaves to trigger stale master status
+ * - Kill MaxScale process and restart MaxScale
+ * - Expect stale master status to still exist for the master
+ */
+
+#include "testconnections.h"
+
+void check_master(TestConnections& test)
+{
+    test.add_result(test.find_master_maxadmin(test.repl) != 0, "Node 0 is not the master");
+
+    test.connect_maxscale();
+    test.try_query(test.conn_rwsplit, "INSERT INTO test.t1 VALUES (1)");
+    test.close_maxscale_connections();
+}
+
+void check_slave(TestConnections& test)
+{
+    test.add_result(test.find_slave_maxadmin(test.repl) == -1, "No slaves found");
+
+    test.connect_maxscale();
+    test.try_query(test.conn_rwsplit, "SELECT * FROM test.t1");
+    test.close_maxscale_connections();
+}
+
+void kill_maxscale(TestConnections& test)
+{
+    test.tprintf("Killing and restarting MaxScale");
+    test.ssh_maxscale(true, "pkill -9 maxscale");
+    test.start_maxscale();
+
+    test.tprintf("Waiting for MaxScale to start");
+    sleep(10);
+}
+
+void restart_maxscale(TestConnections& test)
+{
+    test.restart_maxscale();
+    test.tprintf("Waiting for MaxScale to start");
+    sleep(10);
+}
+
+int main(int argc, char** argv)
+{
+    TestConnections test(argc, argv);
+
+    test.connect_maxscale();
+    test.try_query(test.conn_rwsplit, "CREATE OR REPLACE TABLE test.t1(id int)");
+    test.close_maxscale_connections();
+
+    test.tprintf("Checking that node 0 is the master and slaves are OK");
+    check_master(test);
+    check_slave(test);
+
+    test.tprintf("Blocking slaves to trigger stale master status");
+    test.repl->block_node(1);
+    test.repl->block_node(2);
+    test.repl->block_node(3);
+    sleep(5);
+
+    test.tprintf("Checking that master has stale status");
+    check_master(test);
+
+    kill_maxscale(test);
+
+    test.tprintf("Checking that master still has stale status");
+    check_master(test);
+
+    restart_maxscale(test);
+
+    test.tprintf("Checking that master has stale status after restart");
+    check_master(test);
+
+    test.repl->unblock_node(1);
+    test.repl->unblock_node(2);
+    test.repl->unblock_node(3);
+    sleep(5);
+
+    test.tprintf("Checking that node 0 is the master and slaves are OK");
+    check_master(test);
+    check_slave(test);
+
+    test.tprintf("Blocking master to trigger stale slave status");
+    test.repl->block_node(0);
+    sleep(5);
+
+    test.tprintf("Checking that slaves have stale status");
+    check_slave(test);
+
+    kill_maxscale(test);
+
+    test.tprintf("Checking that slaves still have stale status");
+    check_slave(test);
+
+    restart_maxscale(test);
+
+    test.tprintf("Checking that slaves have stale status after restart");
+    check_slave(test);
+
+    test.repl->unblock_node(0);
+    sleep(5);
+
+    test.tprintf("Checking that node 0 is the master and slaves are OK");
+    check_master(test);
+    check_slave(test);
+
+    return test.global_result;
+}