// 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")
}
}
// 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")
}
}