regression-test/suites/node_p0/test_backend.groovy

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suite("test_backend", "nonConcurrent") {
    def address = "127.0.0.1"
    def notExistPort = 12346

    for (int i = 0; i < 2; i++) {
        def result = sql """SHOW BACKENDS;"""
        logger.info("result:${result}")

        sql """ALTER SYSTEM ADD BACKEND "${address}:${notExistPort}";"""
        waitAddBeFinished(address, notExistPort)

        result = sql """SHOW BACKENDS;"""
        logger.info("result:${result}")

        if (!isCloudMode()) {
            sql """ALTER SYSTEM MODIFY BACKEND "${address}:${notExistPort}" SET ("disable_query" = "true"); """
            sql """ALTER SYSTEM MODIFY BACKEND "${address}:${notExistPort}" SET ("disable_load" = "true"); """
        }

        result = sql """SHOW BACKENDS;"""
        logger.info("result:${result}")

        sql """ALTER SYSTEM DROPP BACKEND "${address}:${notExistPort}";"""
        waitDropBeFinished(address, notExistPort)

        result = sql """SHOW BACKENDS;"""
        logger.info("result:${result}")
    }

    // Cancel decommission backend is not supported in cloud mode.
    if (context.config.jdbcUser.equals("root") && !isCloudMode()) {
        def beId1 = null
        try {
            GetDebugPoint().enableDebugPointForAllFEs("SystemHandler.decommission_no_check_replica_num");
            try_sql """admin set frontend config("drop_backend_after_decommission" = "false")"""
            def result = sql_return_maparray """SHOW BACKENDS;"""
            logger.info("show backends result:${result}")
            for (def res : result) {
                beId1 = res.BackendId
                break
            }
            result = sql """ALTER SYSTEM DECOMMISSION BACKEND "${beId1}" """
            logger.info("ALTER SYSTEM DECOMMISSION BACKEND ${result}")
            result = sql_return_maparray """SHOW BACKENDS;"""
            for (def res : result) {
                if (res.BackendId == "${beId1}") {
                    assertTrue(res.SystemDecommissioned.toBoolean())
                }
            }
        } finally {
            try {
                if (beId1 != null) {
                    def result = sql """CANCEL DECOMMISSION BACKEND "${beId1}" """
                    logger.info("CANCEL DECOMMISSION BACKEND ${result}")

                    result = sql_return_maparray """SHOW BACKENDS;"""
                    for (def res : result) {
                        if (res.BackendId == "${beId1}") {
                            assertFalse(res.SystemDecommissioned.toBoolean())
                        }
                    }
                }
            } finally {
                GetDebugPoint().disableDebugPointForAllFEs('SystemHandler.decommission_no_check_replica_num');
                try_sql """admin set frontend config("drop_backend_after_decommission" = "true")"""
            }
        }
    }
}