Example #1
0
// Open runs the invalidation loop.
func (rci *RowcacheInvalidator) Open(dbname string, mysqld *mysqlctl.Mysqld) {
	rp, err := mysqld.MasterStatus()
	if err != nil {
		panic(NewTabletError(FATAL, "Rowcache invalidator aborting: cannot determine replication position: %v", err))
	}
	if mysqld.Cnf().BinLogPath == "" {
		panic(NewTabletError(FATAL, "Rowcache invalidator aborting: binlog path not specified"))
	}

	ok := rci.svm.Go(func(_ *sync2.ServiceManager) {
		rci.mu.Lock()
		rci.dbname = dbname
		rci.mysqld = mysqld
		rci.evs = binlog.NewEventStreamer(dbname, mysqld.Cnf().BinLogPath)
		rci.GroupId.Set(rp.MasterLogGroupId)
		rci.mu.Unlock()

		rci.run()

		rci.mu.Lock()
		rci.evs = nil
		rci.mu.Unlock()
	})
	if ok {
		log.Infof("Rowcache invalidator starting, dbname: %s, path: %s, logfile: %s, position: %d", dbname, mysqld.Cnf().BinLogPath, rp.MasterLogFile, rp.MasterLogPosition)
	} else {
		log.Infof("Rowcache invalidator already running")
	}
}
Example #2
0
// newBinlogFileStreamer creates a BinlogStreamer. dbname specifes
// the db to stream events for, and binlogPrefix is as defined
// by the mycnf variable.
func newBinlogFileStreamer(dbname string, mysqld *mysqlctl.Mysqld) BinlogStreamer {
	return &binlogFileStreamer{
		dbname: dbname,
		dir:    path.Dir(mysqld.Cnf().BinLogPath),
		mysqld: mysqld,
	}
}
// newBinlogFileStreamer creates a BinlogStreamer.
//
// dbname specifes the db to stream events for.
func newBinlogFileStreamer(dbname string, mysqld *mysqlctl.Mysqld, startPos myproto.ReplicationPosition, sendTransaction sendTransactionFunc) BinlogStreamer {
	return &binlogFileStreamer{
		dbname:          dbname,
		dir:             path.Dir(mysqld.Cnf().BinLogPath),
		mysqld:          mysqld,
		startPos:        startPos,
		sendTransaction: sendTransaction,
	}
}
// Open runs the invalidation loop.
func (rci *RowcacheInvalidator) Open(dbname string, mysqld *mysqlctl.Mysqld) {
	rp, err := mysqld.MasterPosition()
	if err != nil {
		panic(NewTabletError(FATAL, "Rowcache invalidator aborting: cannot determine replication position: %v", err))
	}
	if mysqld.Cnf().BinLogPath == "" {
		panic(NewTabletError(FATAL, "Rowcache invalidator aborting: binlog path not specified"))
	}
	rci.dbname = dbname
	rci.mysqld = mysqld
	rci.SetPosition(rp)

	ok := rci.svm.Go(rci.run)
	if ok {
		log.Infof("Rowcache invalidator starting, dbname: %s, path: %s, position: %v", dbname, mysqld.Cnf().BinLogPath, rp)
	} else {
		log.Infof("Rowcache invalidator already running")
	}
}