func (agent *ActionAgent) allowQueries(tablet *topo.Tablet, blacklistedTables []string) error {
if agent.DBConfigs == nil {
// test instance, do nothing
return nil
}
// if the query service is already running, we're not starting it again
if tabletserver.SqlQueryRpcService.GetState() == "SERVING" {
return nil
}
// Update our DB config to match the info we have in the tablet
if agent.DBConfigs.App.DbName == "" {
agent.DBConfigs.App.DbName = tablet.DbName()
}
agent.DBConfigs.App.Keyspace = tablet.Keyspace
agent.DBConfigs.App.Shard = tablet.Shard
if tablet.Type != topo.TYPE_MASTER {
agent.DBConfigs.App.EnableInvalidator = true
} else {
agent.DBConfigs.App.EnableInvalidator = false
}
err := agent.loadKeyspaceAndBlacklistRules(tablet, blacklistedTables)
if err != nil {
return err
}
return tabletserver.AllowQueries(agent.DBConfigs, agent.SchemaOverrides, agent.Mysqld, false)
}
func main() {
dbconfigs.RegisterFlags()
flag.Parse()
if len(flag.Args()) > 0 {
flag.Usage()
log.Fatalf("vtocc doesn't take any positional arguments")
}
servenv.Init()
dbConfigs, err := dbconfigs.Init("")
if err != nil {
log.Fatalf("Cannot initialize App dbconfig: %v", err)
}
if *enableRowcache {
dbConfigs.App.EnableRowcache = true
if *enableInvalidator {
dbConfigs.App.EnableInvalidator = true
}
}
mycnf := &mysqlctl.Mycnf{BinLogPath: *binlogPath}
mysqld := mysqlctl.NewMysqld("Dba", mycnf, &dbConfigs.Dba, &dbConfigs.Repl)
unmarshalFile(*overridesFile, &schemaOverrides)
data, _ := json.MarshalIndent(schemaOverrides, "", " ")
log.Infof("schemaOverrides: %s\n", data)
if *tableAclConfig != "" {
tableacl.Init(*tableAclConfig)
}
tabletserver.InitQueryService()
err = tabletserver.SqlQueryRpcService.SetQueryRules(tabletserver.CustomQueryRules, tabletserver.LoadCustomRules())
if err != nil {
log.Warningf("Fail to load query rule set %s, Error message: %s", tabletserver.CustomQueryRules, err)
}
err = tabletserver.AllowQueries(dbConfigs, schemaOverrides, mysqld, true)
if err != nil {
return
}
log.Infof("starting vtocc %v", *servenv.Port)
servenv.OnTerm(func() {
tabletserver.DisallowQueries()
mysqld.Close()
})
servenv.RunDefault()
}