92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
/**
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* MXS-2521: COM_STMT_EXECUTE maybe return empty result
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* https://jira.mariadb.org/browse/MXS-2521
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*/
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#include <maxtest/testconnections.hh>
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void do_test(TestConnections& test, MYSQL* conn)
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{
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auto stmt = mysql_stmt_init(conn);
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std::string sql = "select a, @@server_id from double_execute where a = ?";
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test.expect(mysql_stmt_prepare(stmt, sql.c_str(), sql.length()) == 0,
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"Prepare should work: %s", mysql_error(conn));
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int data_out = 123;
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MYSQL_BIND bind_out;
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char null_out = 0;
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bind_out.buffer_type = MYSQL_TYPE_LONG;
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bind_out.buffer = &data_out;
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bind_out.buffer_length = sizeof(data_out);
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bind_out.is_null = &null_out;
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test.expect(mysql_stmt_bind_param(stmt, &bind_out) == 0, "Bind: %s", mysql_stmt_error(stmt));
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// The first execute is done on the master
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test.try_query(conn, "BEGIN");
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test.expect(mysql_stmt_execute(stmt) == 0, "First execute should work: %s", mysql_stmt_error(stmt));
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int data_in[2] = {};
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MYSQL_BIND bind_in[2] = {};
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char null_in[2] = {};
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for (int i = 0; i < 2; i++)
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{
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bind_in[i].buffer_type = MYSQL_TYPE_LONG;
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bind_in[i].buffer = &data_in[i];
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bind_in[i].buffer_length = sizeof(data_in[i]);
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bind_in[i].is_null = &null_in[i];
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}
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mysql_stmt_bind_result(stmt, bind_in);
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mysql_stmt_store_result(stmt);
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test.expect(mysql_stmt_fetch(stmt) == 0, "First fetch of first execute should work");
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test.expect(data_in[0] == 123, "Query should return one row with value 123: `%d`", data_in[0]);
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test.expect(mysql_stmt_fetch(stmt) != 0, "Second fetch of first execute should NOT work");
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int first_server = data_in[1];
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test.try_query(conn, "COMMIT");
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// The second execute goes to a slave, no new parameters are sent in it
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memset(data_in, 0, sizeof(data_in));
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test.expect(mysql_stmt_execute(stmt) == 0, "Second execute should work: %s", mysql_stmt_error(stmt));
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mysql_stmt_bind_result(stmt, bind_in);
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mysql_stmt_store_result(stmt);
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test.expect(mysql_stmt_fetch(stmt) == 0, "First fetch of second execute should work");
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test.expect(data_in[0] == 123, "Query should return one row with value 123: `%d`", data_in[0]);
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test.expect(data_in[1] == first_server,
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"The query should be routed to the server with server_id %d, not %d",
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first_server, data_in[1]);
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test.expect(mysql_stmt_fetch(stmt) != 0, "Second fetch of second execute should NOT work");
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mysql_stmt_close(stmt);
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}
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int main(int argc, char** argv)
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{
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TestConnections test(argc, argv);
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test.repl->connect();
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test.maxscales->connect();
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// Prepare a table
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test.try_query(test.repl->nodes[0], "DROP TABLE IF EXISTS double_execute;");
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test.try_query(test.repl->nodes[0], "CREATE TABLE double_execute(a int);");
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test.try_query(test.repl->nodes[0], "INSERT INTO double_execute VALUES (123), (456)");
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test.repl->sync_slaves();
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test.tprintf("Running test with a direct connection");
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do_test(test, test.repl->nodes[0]);
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test.tprintf("Running test through readwritesplit");
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do_test(test, test.maxscales->conn_rwsplit[0]);
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test.try_query(test.repl->nodes[0], "DROP TABLE IF EXISTS double_execute;");
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return test.global_result;
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}
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