diff --git a/db/routines/util/functions/binlogQueue_getDelay.sql b/db/routines/util/functions/binlogQueue_getDelay.sql new file mode 100644 index 0000000000..a440fc0ab2 --- /dev/null +++ b/db/routines/util/functions/binlogQueue_getDelay.sql @@ -0,0 +1,45 @@ +DELIMITER $$ +CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `util`.`binlogQueue_getDelay`(vCode VARCHAR(255)) + RETURNS BIGINT + NOT DETERMINISTIC +BEGIN +/** + * Returns the difference between the current position of the binary log and + * the passed queue. + * + * @param vCode The queue code + * @return The difference in MB + */ + DECLARE vCurLogName VARCHAR(255); + DECLARE vCurPosition BIGINT; + DECLARE vQueueLogName VARCHAR(255); + DECLARE vQueuePosition BIGINT; + DECLARE vDelay BIGINT; + + SELECT VARIABLE_VALUE INTO vCurLogName + FROM information_schema.GLOBAL_STATUS + WHERE VARIABLE_NAME = 'BINLOG_SNAPSHOT_FILE'; + + SELECT VARIABLE_VALUE INTO vCurPosition + FROM information_schema.GLOBAL_STATUS + WHERE VARIABLE_NAME = 'BINLOG_SNAPSHOT_POSITION'; + + SELECT logName, `position` + INTO vQueueLogName, vQueuePosition + FROM binlogQueue + WHERE code = vCode; + + IF vQueuePosition IS NULL THEN + RETURN NULL; + END IF; + + SET vDelay = + vCurPosition - CAST(vQueuePosition AS SIGNED) + + @@max_binlog_size * ( + CAST(REGEXP_SUBSTR(vCurLogName, '[0-9]+') AS SIGNED) - + CAST(REGEXP_SUBSTR(vQueueLogName, '[0-9]+') AS SIGNED) + ); + + RETURN ROUND(vDelay / POW(1024, 2)); +END$$ +DELIMITER ;