9ef1ffa878
Added a test case that verifies that a successful transaction replay is performed when a master switchover is performed.
91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
/**
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* MXS-1507: Test migration of transactions
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*
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* https://jira.mariadb.org/browse/MXS-1507
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*/
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#include "testconnections.h"
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#include <functional>
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#include <iostream>
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#include <vector>
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using namespace std;
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int main(int argc, char** argv)
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{
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Mariadb_nodes::require_gtid(true);
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TestConnections test(argc, argv);
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string master = "server1";
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string slave = "server2";
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auto switchover = [&]()
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{
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test.maxscales->ssh_node_f(0, true, "maxctrl call command mariadbmon switchover MySQL-Monitor %s %s",
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master.c_str(), slave.c_str());
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master.swap(slave);
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sleep(5); // Seems that the system needs a few seconds to stabilize
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};
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auto query = [&](string q)
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{
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return execute_query_silent(test.maxscales->conn_rwsplit[0], q.c_str()) == 0;
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};
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auto ok = [&](string q)
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{
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test.assert(query(q), "Query '%s' should work: %s", q.c_str(), mysql_error(test.maxscales->conn_rwsplit[0]));
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};
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auto check = [&](string q)
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{
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ok("START TRANSACTION");
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Row row = get_row(test.maxscales->conn_rwsplit[0], q.c_str());
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ok("COMMIT");
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test.assert(!row.empty() && row[0] == "1", "Query should return 1: %s", q.c_str());
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};
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// Create a table, insert a value and make sure it's replicated to all slaves
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test.maxscales->connect();
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ok("CREATE OR REPLACE TABLE test.t1 (id INT)");
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ok("INSERT INTO test.t1 VALUES (1)");
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test.repl->connect();
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test.repl->sync_slaves();
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test.maxscales->disconnect();
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cout << "Commit transaction" << endl;
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test.maxscales->connect();
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ok("START TRANSACTION");
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ok("SELECT id FROM test.t1 WHERE id = 1 FOR UPDATE");
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switchover();
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ok("UPDATE test.t1 SET id = 2 WHERE id = 1");
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ok("COMMIT");
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check("SELECT COUNT(*) = 1 FROM t1 WHERE id = 2");
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test.maxscales->disconnect();
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cout << "Rollback transaction" << endl;
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test.maxscales->connect();
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ok("START TRANSACTION");
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ok("UPDATE test.t1 SET id = 1");
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switchover();
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ok("ROLLBACK");
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check("SELECT COUNT(*) = 1 FROM t1 WHERE id = 2");
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test.maxscales->disconnect();
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cout << "Read-only transaction" << endl;
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test.maxscales->connect();
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ok("START TRANSACTION READ ONLY");
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ok("SELECT @@server_id"); // This causes a checksum mismatch if the transaction is migrated
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switchover();
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ok("COMMIT");
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test.maxscales->disconnect();
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test.maxscales->connect();
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ok("DROP TABLE test.t1");
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test.maxscales->disconnect();
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// Even number of switchovers should bring us back to the original master
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switchover();
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return test.global_result;
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}
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