// Open must be called before sending requests to QueryEngine.
func (qe *QueryEngine) Open(dbconfigs *dbconfigs.DBConfigs, schemaOverrides []SchemaOverride, mysqld *mysqlctl.Mysqld) {
qe.dbconfigs = dbconfigs
connFactory := dbconnpool.DBConnectionCreator(&dbconfigs.App.ConnectionParams, mysqlStats)
// Create dba params based on App connection params
// and Dba credentials.
dba := dbconfigs.App.ConnectionParams
if dbconfigs.Dba.Uname != "" {
dba.Uname = dbconfigs.Dba.Uname
dba.Pass = dbconfigs.Dba.Pass
}
dbaConnFactory := dbconnpool.DBConnectionCreator(&dba, mysqlStats)
strictMode := false
if qe.strictMode.Get() != 0 {
strictMode = true
}
if !strictMode && dbconfigs.App.EnableRowcache {
panic(NewTabletError(FATAL, "Rowcache cannot be enabled when queryserver-config-strict-mode is false"))
}
if dbconfigs.App.EnableRowcache {
qe.cachePool.Open()
log.Infof("rowcache is enabled")
} else {
// Invalidator should not be enabled if rowcache is not enabled.
dbconfigs.App.EnableInvalidator = false
log.Infof("rowcache is not enabled")
}
start := time.Now()
// schemaInfo depends on cachePool. Every table that has a rowcache
// points to the cachePool.
qe.schemaInfo.Open(dbaConnFactory, schemaOverrides, qe.cachePool, strictMode)
log.Infof("Time taken to load the schema: %v", time.Now().Sub(start))
// Start the invalidator only after schema is loaded.
// This will allow qe to find the table info
// for the invalidation events that will start coming
// immediately.
if dbconfigs.App.EnableInvalidator {
qe.invalidator.Open(dbconfigs.App.DbName, mysqld)
}
qe.connPool.Open(connFactory)
qe.streamConnPool.Open(connFactory)
qe.txPool.Open(connFactory)
qe.connKiller.Open(dbaConnFactory)
}
// NewMysqld creates a Mysqld object based on the provided configuration
// and connection parameters.
// name is the base for stats exports, use 'Dba', except in tests
func NewMysqld(name string, config *Mycnf, dba, repl *mysql.ConnectionParams) *Mysqld {
if *dba == dbconfigs.DefaultDBConfigs.Dba {
dba.UnixSocket = config.SocketFile
}
// create and open the connection pool for dba access
mysqlStats := stats.NewTimings("Mysql" + name)
dbaPool := dbconnpool.NewConnectionPool(name+"ConnPool", *dbaPoolSize, *dbaIdleTimeout)
dbaPool.Open(dbconnpool.DBConnectionCreator(dba, mysqlStats))
return &Mysqld{
config: config,
dba: dba,
dbaPool: dbaPool,
replParams: repl,
TabletDir: TabletDir(config.ServerId),
SnapshotDir: SnapshotDir(config.ServerId),
}
}