func main() {
	dbConfigsFile, dbCredentialsFile := dbconfigs.RegisterCommonFlags()
	flag.Parse()
	servenv.Init()

	if *mycnfFile == "" {
		log.Fatalf("Please specify the path for mycnf file.")
	}
	mycnf, err := mysqlctl.ReadMycnf(*mycnfFile)
	if err != nil {
		log.Fatalf("Error reading mycnf file %v", *mycnfFile)
	}
	dbcfgs, err := dbconfigs.Init(mycnf.SocketFile, *dbConfigsFile, *dbCredentialsFile)
	if err != nil {
		log.Warning(err)
	}
	mysqld := mysqlctl.NewMysqld(mycnf, dbcfgs.Dba, dbcfgs.Repl)

	binlogServer := mysqlctl.NewBinlogServer(mysqld)
	mysqlctl.EnableBinlogServerService(binlogServer, *dbname)

	proto.RegisterBinlogServer(binlogServer)
	rpcwrap.RegisterAuthenticated(binlogServer)
	servenv.OnClose(func() {
		mysqlctl.DisableBinlogServerService(binlogServer)
	})
	servenv.Run(*port)
}

// NewServer starts a new unregistered TabletServer.
// You have to end it with StopService once testing is done.
func NewServer(config tabletserver.Config, connParams sqldb.ConnParams, enableRowcache bool) (*tabletserver.TabletServer, error) {
	dbcfgs := dbconfigs.DBConfigs{
		App: dbconfigs.DBConfig{
			ConnParams:        connParams,
			Keyspace:          "vttest",
			Shard:             "0",
			EnableRowcache:    enableRowcache,
			EnableInvalidator: false,
		},
	}

	mysqld := mysqlctl.NewMysqld(
		"Dba",
		"App",
		&mysqlctl.Mycnf{},
		&dbcfgs.Dba,
		&dbcfgs.App.ConnParams,
		&dbcfgs.Repl)

	Target = query.Target{
		Keyspace:   "vttest",
		Shard:      "0",
		TabletType: topodata.TabletType_MASTER,
	}

	server := tabletserver.NewTabletServer(config)
	err := server.StartService(&Target, &dbcfgs, nil, mysqld)
	if err != nil {
		return nil, err
	}
	return server, nil
}

func main() {
	dbConfigsFile, dbCredentialsFile := dbconfigs.RegisterCommonFlags()
	flag.Parse()

	relog.Info("started vtaction %v", os.Args)

	rpc.HandleHTTP()
	jsonrpc.ServeHTTP()
	jsonrpc.ServeRPC()
	bsonrpc.ServeHTTP()
	bsonrpc.ServeRPC()

	logFile, err := os.OpenFile(*logFilename,
		os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0666)
	if err != nil {
		relog.Fatal("Can't open log file: %v", err)
	}
	relog.SetOutput(logFile)
	relog.SetPrefix(fmt.Sprintf("vtaction [%v] ", os.Getpid()))
	if err := relog.SetLevelByName(*logLevel); err != nil {
		relog.Fatal("%v", err)
	}
	relog.HijackLog(nil)
	relog.HijackStdio(logFile, logFile)

	mycnf, mycnfErr := mysqlctl.ReadMycnf(*mycnfFile)
	if mycnfErr != nil {
		relog.Fatal("mycnf read failed: %v", mycnfErr)
	}

	relog.Debug("mycnf: %v", jscfg.ToJson(mycnf))

	dbcfgs, cfErr := dbconfigs.Init(mycnf.SocketFile, *dbConfigsFile, *dbCredentialsFile)
	if err != nil {
		relog.Fatal("%s", cfErr)
	}
	mysqld := mysqlctl.NewMysqld(mycnf, dbcfgs.Dba, dbcfgs.Repl)

	topoServer := topo.GetServer()
	defer topo.CloseServers()

	actor := tabletmanager.NewTabletActor(mysqld, topoServer)

	// we delegate out startup to the micromanagement server so these actions
	// will occur after we have obtained our socket.
	bindAddr := fmt.Sprintf(":%v", *port)
	httpServer := &http.Server{Addr: bindAddr}
	go func() {
		if err := httpServer.ListenAndServe(); err != nil {
			relog.Error("httpServer.ListenAndServe err: %v", err)
		}
	}()

	actionErr := actor.HandleAction(*actionNode, *action, *actionGuid, *force)
	if actionErr != nil {
		relog.Fatal("action error: %v", actionErr)
	}

	relog.Info("finished vtaction %v", os.Args)
}

func (updateStream *UpdateStream) enable(dbcfgs *dbconfigs.DBConfigs) {
	updateStream.actionLock.Lock()
	defer updateStream.actionLock.Unlock()
	if updateStream.isEnabled() {
		return
	}

	if dbcfgs.Dba.UnixSocket == "" {
		log.Errorf("Missing dba socket connection, cannot enable update stream service")
		return
	}

	if dbcfgs.App.DbName == "" {
		log.Errorf("Missing db name, cannot enable update stream service")
		return
	}

	if updateStream.mycnf.BinLogPath == "" {
		log.Errorf("Update stream service requires binlogs enabled")
		return
	}

	updateStream.state.Set(ENABLED)
	updateStream.mysqld = mysqlctl.NewMysqld(updateStream.mycnf, &dbcfgs.Dba, &dbcfgs.Repl)
	updateStream.dbname = dbcfgs.App.DbName
	updateStream.streams.Init()
	log.Infof("Enabling update stream, dbname: %s, binlogpath: %s", updateStream.dbname, updateStream.mycnf.BinLogPath)
}

func main() {
	dbconfigs.RegisterFlags()
	flag.Parse()
	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(mycnf, &dbConfigs.Dba, &dbConfigs.Repl)

	unmarshalFile(*overridesFile, &schemaOverrides)
	data, _ := json.MarshalIndent(schemaOverrides, "", "  ")
	log.Infof("schemaOverrides: %s\n", data)

	ts.InitQueryService()

	ts.AllowQueries(&dbConfigs.App, schemaOverrides, ts.LoadCustomRules(), mysqld)

	log.Infof("starting vtocc %v", *servenv.Port)
	servenv.OnClose(func() {
		time.Sleep(5 * time.Millisecond)
		ts.DisallowQueries()
	})
	servenv.Run()
}

func main() {
	defer exit.Recover()
	defer logutil.Flush()

	dbconfigs.RegisterFlags()
	flag.Parse()

	mycnf := mysqlctl.NewMycnf(uint32(*tabletUid), *mysqlPort)
	if *mysqlSocket != "" {
		mycnf.SocketFile = *mysqlSocket
	}

	dbcfgs, err := dbconfigs.Init(mycnf.SocketFile)
	if err != nil {
		log.Errorf("%v", err)
		exit.Return(255)
	}
	mysqld = mysqlctl.NewMysqld("Dba", mycnf, &dbcfgs.Dba, &dbcfgs.Repl)

	// Register OnTerm handler before mysqld starts, so we get notified if mysqld
	// dies on its own without us (or our RPC client) telling it to.
	mysqldTerminated := make(chan struct{})
	mysqld.OnTerm(func() {
		close(mysqldTerminated)
	})

	// Start or Init mysqld as needed.
	if _, err = os.Stat(mycnf.DataDir); os.IsNotExist(err) {
		log.Infof("mysql data dir (%s) doesn't exist, initializing", mycnf.DataDir)
		mysqld.Init(*waitTime, *bootstrapArchive, *skipSchema)
	} else {
		log.Infof("mysql data dir (%s) already exists, starting without init", mycnf.DataDir)
		mysqld.Start(*waitTime)
	}

	servenv.Init()
	defer servenv.Close()

	// Take mysqld down with us on SIGTERM before entering lame duck.
	servenv.OnTerm(func() {
		log.Infof("mysqlctl received SIGTERM, shutting down mysqld first")
		mysqld.Shutdown(false, 0)
	})

	// Start RPC server and wait for SIGTERM.
	mysqlctldTerminated := make(chan struct{})
	go func() {
		servenv.RunDefault()
		close(mysqlctldTerminated)
	}()

	select {
	case <-mysqldTerminated:
		log.Infof("mysqld shut down on its own, exiting mysqlctld")
	case <-mysqlctldTerminated:
		log.Infof("mysqlctld shut down gracefully")
	}
}

// StartDefaultServer starts the default server and initializes
// all the global variables. This function should only be called
// once at the beginning of the test.
func StartDefaultServer(connParams sqldb.ConnParams, schemaOverrides []tabletserver.SchemaOverride) error {
	dbcfgs := dbconfigs.DBConfigs{
		App: dbconfigs.DBConfig{
			ConnParams:        connParams,
			Keyspace:          "vttest",
			Shard:             "0",
			EnableRowcache:    true,
			EnableInvalidator: false,
		},
	}

	mysqld := mysqlctl.NewMysqld(
		"Dba",
		"App",
		&mysqlctl.Mycnf{},
		&dbcfgs.Dba,
		&dbcfgs.App.ConnParams,
		&dbcfgs.Repl)

	BaseConfig = tabletserver.DefaultQsConfig
	BaseConfig.RowCache.Binary = vttest.MemcachedPath()
	BaseConfig.RowCache.Socket = path.Join(os.TempDir(), "memcache.sock")
	BaseConfig.RowCache.Connections = 100
	BaseConfig.EnableAutoCommit = true
	BaseConfig.StrictTableAcl = true

	Target = query.Target{
		Keyspace:   "vttest",
		Shard:      "0",
		TabletType: topodata.TabletType_MASTER,
	}

	DefaultServer = tabletserver.NewTabletServer(BaseConfig)
	DefaultServer.Register()
	err := DefaultServer.StartService(&Target, &dbcfgs, schemaOverrides, mysqld)
	if err != nil {
		return fmt.Errorf("could not start service: %v\n", err)
	}

	// Start http service.
	ln, err := net.Listen("tcp", ":0")
	if err != nil {
		return fmt.Errorf("could not start listener: %v\n", err)
	}
	ServerAddress = fmt.Sprintf("http://%s", ln.Addr().String())
	go http.Serve(ln, nil)
	for {
		time.Sleep(10 * time.Millisecond)
		response, err := http.Get(fmt.Sprintf("%s/debug/vars", ServerAddress))
		if err == nil {
			response.Body.Close()
			break
		}
	}
	return nil
}

func (util *testUtils) newMysqld(dbconfigs *dbconfigs.DBConfigs) mysqlctl.MysqlDaemon {
	return mysqlctl.NewMysqld(
		"",
		"",
		mysqlctl.NewMycnf(0, 6802),
		&dbconfigs.Dba,
		&dbconfigs.App.ConnParams,
		&dbconfigs.Repl,
	)
}

func main() {
	defer exit.Recover()

	// flag parsing
	flags := dbconfigs.AppConfig | dbconfigs.DbaConfig |
		dbconfigs.FilteredConfig | dbconfigs.ReplConfig
	dbconfigs.RegisterFlags(flags)
	mysqlctl.RegisterFlags()
	flag.Parse()
	if len(flag.Args()) > 0 {
		flag.Usage()
		log.Errorf("vtcombo doesn't take any positional arguments")
		exit.Return(1)
	}

	// register topo server
	topo.RegisterServer("fakezk", zktopo.NewServer(fakezk.NewConn()))
	ts := topo.GetServerByName("fakezk")

	servenv.Init()

	// database configs
	mycnf, err := mysqlctl.NewMycnfFromFlags(0)
	if err != nil {
		log.Errorf("mycnf read failed: %v", err)
		exit.Return(1)
	}
	dbcfgs, err := dbconfigs.Init(mycnf.SocketFile, flags)
	if err != nil {
		log.Warning(err)
	}
	mysqld := mysqlctl.NewMysqld("Dba", "App", mycnf, &dbcfgs.Dba, &dbcfgs.App.ConnParams, &dbcfgs.Repl)

	// tablets configuration and init
	binlog.RegisterUpdateStreamService(mycnf)
	initTabletMap(ts, *topology, mysqld, dbcfgs, mycnf)

	// vtgate configuration and init
	resilientSrvTopoServer := vtgate.NewResilientSrvTopoServer(ts, "ResilientSrvTopoServer")
	healthCheck := discovery.NewHealthCheck(30*time.Second /*connTimeoutTotal*/, 1*time.Millisecond /*retryDelay*/)
	vtgate.Init(healthCheck, ts, resilientSrvTopoServer, nil /*schema*/, cell, 1*time.Millisecond /*retryDelay*/, 2 /*retryCount*/, 30*time.Second /*connTimeoutTotal*/, 10*time.Second /*connTimeoutPerConn*/, 365*24*time.Hour /*connLife*/, 0 /*maxInFlight*/, "" /*testGateway*/)

	servenv.OnTerm(func() {
		// FIXME(alainjobart) stop vtgate, all tablets
		//		qsc.DisallowQueries()
		//		agent.Stop()
	})
	servenv.OnClose(func() {
		// We will still use the topo server during lameduck period
		// to update our state, so closing it in OnClose()
		topo.CloseServers()
	})
	servenv.RunDefault()
}

// NewActionAgent creates a new ActionAgent and registers all the
// associated services
func NewActionAgent(
	tabletAlias topo.TabletAlias,
	dbcfgs *dbconfigs.DBConfigs,
	mycnf *mysqlctl.Mycnf,
	port, securePort int,
	overridesFile string,
	lockTimeout time.Duration,
) (agent *ActionAgent, err error) {
	schemaOverrides := loadSchemaOverrides(overridesFile)

	topoServer := topo.GetServer()
	mysqld := mysqlctl.NewMysqld("Dba", mycnf, &dbcfgs.Dba, &dbcfgs.Repl)

	agent = &ActionAgent{
		TopoServer:         topoServer,
		TabletAlias:        tabletAlias,
		Mysqld:             mysqld,
		MysqlDaemon:        mysqld,
		DBConfigs:          dbcfgs,
		SchemaOverrides:    schemaOverrides,
		LockTimeout:        lockTimeout,
		done:               make(chan struct{}),
		History:            history.New(historyLength),
		lastHealthMapCount: stats.NewInt("LastHealthMapCount"),
		changeItems:        make(chan tabletChangeItem, 100),
	}

	// Start the binlog player services, not playing at start.
	agent.BinlogPlayerMap = NewBinlogPlayerMap(topoServer, &dbcfgs.Filtered, mysqld)
	RegisterBinlogPlayerMap(agent.BinlogPlayerMap)

	// try to figure out the mysql port
	mysqlPort := mycnf.MysqlPort
	if mysqlPort == 0 {
		// we don't know the port, try to get it from mysqld
		var err error
		mysqlPort, err = mysqld.GetMysqlPort()
		if err != nil {
			log.Warningf("Cannot get current mysql port, will use 0 for now: %v", err)
		}
	}

	if err := agent.Start(mysqlPort, port, securePort); err != nil {
		return nil, err
	}

	// register the RPC services from the agent
	agent.registerQueryService()

	// start health check if needed
	agent.initHeathCheck()

	return agent, nil
}

func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: %s [global parameters] command [command parameters]\n", os.Args[0])

		fmt.Fprintf(os.Stderr, "\nThe global optional parameters are:\n")
		flag.PrintDefaults()

		fmt.Fprintf(os.Stderr, "\nThe commands are listed below. Use '%s <command> -h' for more help.\n\n", os.Args[0])
		for _, cmd := range commands {
			fmt.Fprintf(os.Stderr, "  %s", cmd.name)
			if cmd.params != "" {
				fmt.Fprintf(os.Stderr, " %s", cmd.params)
			}
			fmt.Fprintf(os.Stderr, "\n")
		}
		fmt.Fprintf(os.Stderr, "\n")
	}
	dbConfigsFile, dbCredentialsFile := dbconfigs.RegisterCommonFlags()
	flag.Parse()

	if err := relog.SetLevelByName(*logLevel); err != nil {
		relog.Fatal("%v", err)
	}

	tabletAddr = fmt.Sprintf("%v:%v", "localhost", *port)
	mycnf := mysqlctl.NewMycnf(uint32(*tabletUid), *mysqlPort, mysqlctl.VtReplParams{})

	if *mysqlSocket != "" {
		mycnf.SocketFile = *mysqlSocket
	}

	dbcfgs, err := dbconfigs.Init(mycnf.SocketFile, *dbConfigsFile, *dbCredentialsFile)
	if err != nil {
		relog.Fatal("%v", err)
	}
	mysqld := mysqlctl.NewMysqld(mycnf, dbcfgs.Dba, dbcfgs.Repl)

	action := flag.Arg(0)
	for _, cmd := range commands {
		if cmd.name == action {
			subFlags := flag.NewFlagSet(action, flag.ExitOnError)
			subFlags.Usage = func() {
				fmt.Fprintf(os.Stderr, "Usage: %s %s %s\n\n", os.Args[0], cmd.name, cmd.params)
				fmt.Fprintf(os.Stderr, "%s\n\n", cmd.help)
				subFlags.PrintDefaults()
			}

			cmd.method(mysqld, subFlags, flag.Args()[1:])
			return
		}
	}
	relog.Fatal("invalid action: %v", action)
}

func main() {
	defer logutil.Flush()

	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: %s [global parameters] command [command parameters]\n", os.Args[0])

		fmt.Fprintf(os.Stderr, "\nThe global optional parameters are:\n")
		flag.PrintDefaults()

		fmt.Fprintf(os.Stderr, "\nThe commands are listed below. Use '%s <command> -h' for more help.\n\n", os.Args[0])
		for _, cmd := range commands {
			fmt.Fprintf(os.Stderr, "  %s", cmd.name)
			if cmd.params != "" {
				fmt.Fprintf(os.Stderr, " %s", cmd.params)
			}
			fmt.Fprintf(os.Stderr, "\n")
		}
		fmt.Fprintf(os.Stderr, "\n")
	}
	dbconfigs.RegisterFlags()
	flag.Parse()

	tabletAddr = fmt.Sprintf("%v:%v", "localhost", *port)
	mycnf := mysqlctl.NewMycnf(uint32(*tabletUid), *mysqlPort)

	if *mysqlSocket != "" {
		mycnf.SocketFile = *mysqlSocket
	}

	dbcfgs, err := dbconfigs.Init(mycnf.SocketFile)
	if err != nil {
		log.Fatalf("%v", err)
	}
	mysqld := mysqlctl.NewMysqld("Dba", mycnf, &dbcfgs.Dba, &dbcfgs.Repl)
	defer mysqld.Close()

	action := flag.Arg(0)
	for _, cmd := range commands {
		if cmd.name == action {
			subFlags := flag.NewFlagSet(action, flag.ExitOnError)
			subFlags.Usage = func() {
				fmt.Fprintf(os.Stderr, "Usage: %s %s %s\n\n", os.Args[0], cmd.name, cmd.params)
				fmt.Fprintf(os.Stderr, "%s\n\n", cmd.help)
				subFlags.PrintDefaults()
			}

			cmd.method(mysqld, subFlags, flag.Args()[1:])
			return
		}
	}
	log.Fatalf("invalid action: %v", action)
}

// StartServer starts the server and initializes
// all the global variables. This function should only be called
// once at the beginning of the test.
func StartServer(connParams sqldb.ConnParams) error {
	dbcfgs := dbconfigs.DBConfigs{
		App: dbconfigs.DBConfig{
			ConnParams: connParams,
			Keyspace:   "vttest",
			Shard:      "0",
		},
	}

	mysqld := mysqlctl.NewMysqld(
		"Dba",
		"App",
		&mysqlctl.Mycnf{},
		&dbcfgs.Dba,
		&dbcfgs.App.ConnParams,
		&dbcfgs.Repl)

	BaseConfig = tabletserver.DefaultQsConfig
	BaseConfig.EnableAutoCommit = true
	BaseConfig.StrictTableAcl = true

	Target = querypb.Target{
		Keyspace:   "vttest",
		Shard:      "0",
		TabletType: topodatapb.TabletType_MASTER,
	}

	Server = tabletserver.NewTabletServer(BaseConfig)
	Server.Register()
	err := Server.StartService(Target, dbcfgs, mysqld)
	if err != nil {
		return fmt.Errorf("could not start service: %v\n", err)
	}

	// Start http service.
	ln, err := net.Listen("tcp", ":0")
	if err != nil {
		return fmt.Errorf("could not start listener: %v\n", err)
	}
	ServerAddress = fmt.Sprintf("http://%s", ln.Addr().String())
	go http.Serve(ln, nil)
	for {
		time.Sleep(10 * time.Millisecond)
		response, err := http.Get(fmt.Sprintf("%s/debug/vars", ServerAddress))
		if err == nil {
			response.Body.Close()
			break
		}
	}
	return nil
}

func (util *testUtils) newMysqld(dbconfigs *dbconfigs.DBConfigs) mysqlctl.MysqlDaemon {
	cnf := mysqlctl.NewMycnf(11111, 6802)
	// Assigning ServerID to be different from tablet UID to make sure that there are no
	// assumptions in the code that those IDs are the same.
	cnf.ServerID = 22222
	return mysqlctl.NewMysqld(
		cnf,
		&dbconfigs.Dba,
		&dbconfigs.AllPrivs,
		&dbconfigs.App,
		&dbconfigs.Repl,
		false, /* enablePublishStats */
	)
}

func (util *testUtils) newMysqld(dbconfigs *dbconfigs.DBConfigs) mysqlctl.MysqlDaemon {
	cnf := mysqlctl.NewMycnf(11111, 6802)
	// Assigning ServerID to be different from tablet UID to make sure that there are no
	// assumptions in the code that those IDs are the same.
	cnf.ServerID = 22222
	return mysqlctl.NewMysqld(
		"",
		"",
		cnf,
		&dbconfigs.Dba,
		&dbconfigs.App.ConnParams,
		&dbconfigs.Repl,
	)
}

func main() {
	dbconfigs.RegisterFlags()
	mysqlctl.RegisterFlags()
	flag.Parse()
	servenv.Init()
	defer servenv.Close()

	log.Infof("started vtaction %v", os.Args)

	servenv.ServeRPC()

	mycnf, mycnfErr := mysqlctl.NewMycnfFromFlags(0)
	if mycnfErr != nil {
		log.Fatalf("mycnf read failed: %v", mycnfErr)
	}

	log.V(6).Infof("mycnf: %v", jscfg.ToJson(mycnf))

	dbcfgs, cfErr := dbconfigs.Init(mycnf.SocketFile)
	if cfErr != nil {
		log.Fatalf("%s", cfErr)
	}
	mysqld := mysqlctl.NewMysqld("Dba", mycnf, &dbcfgs.Dba, &dbcfgs.Repl)
	defer mysqld.Close()

	topoServer := topo.GetServer()
	defer topo.CloseServers()

	actor := actor.NewTabletActor(mysqld, mysqld, topoServer, topo.TabletAlias{})

	// we delegate out startup to the micromanagement server so these actions
	// will occur after we have obtained our socket.
	bindAddr := fmt.Sprintf(":%v", *servenv.Port)
	httpServer := &http.Server{Addr: bindAddr}
	go func() {
		if err := httpServer.ListenAndServe(); err != nil {
			log.Errorf("httpServer.ListenAndServe err: %v", err)
		}
	}()

	actionErr := actor.HandleAction(*actionNode, *action, *actionGuid, *force)
	if actionErr != nil {
		log.Fatalf("action error: %v", actionErr)
	}

	log.Infof("finished vtaction %v", os.Args)
}

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.AllowQueries(&dbConfigs.App, schemaOverrides, tabletserver.LoadCustomRules(), mysqld, true)
	if err != nil {
		return
	}

	log.Infof("starting vtocc %v", *servenv.Port)
	servenv.OnTerm(func() {
		tabletserver.DisallowQueries()
		mysqld.Close()
	})
	servenv.RunDefault()
}

// NewActionAgent creates a new ActionAgent and registers all the
// associated services
func NewActionAgent(
	tabletAlias topo.TabletAlias,
	dbcfgs *dbconfigs.DBConfigs,
	mycnf *mysqlctl.Mycnf,
	port, securePort int,
	overridesFile string,
) (agent *ActionAgent, err error) {
	schemaOverrides := loadSchemaOverrides(overridesFile)

	topoServer := topo.GetServer()
	mysqld := mysqlctl.NewMysqld(mycnf, &dbcfgs.Dba, &dbcfgs.Repl)

	agent = &ActionAgent{
		TopoServer:      topoServer,
		TabletAlias:     tabletAlias,
		Mysqld:          mysqld,
		DBConfigs:       dbcfgs,
		SchemaOverrides: schemaOverrides,
		done:            make(chan struct{}),
		History:         history.New(historyLength),
		changeItems:     make(chan tabletChangeItem, 100),
	}

	// Start the binlog player services, not playing at start.
	agent.BinlogPlayerMap = NewBinlogPlayerMap(topoServer, &dbcfgs.App.ConnectionParams, mysqld)
	RegisterBinlogPlayerMap(agent.BinlogPlayerMap)

	if err := agent.Start(mysqld.Port(), port, securePort); err != nil {
		return nil, err
	}

	// register the RPC services from the agent
	agent.registerQueryService()

	// start health check if needed
	agent.initHeathCheck()

	return agent, nil
}

func main() {
	defer exit.Recover()
	defer logutil.Flush()

	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: %s [global parameters] command [command parameters]\n", os.Args[0])

		fmt.Fprintf(os.Stderr, "\nThe global optional parameters are:\n")
		flag.PrintDefaults()

		fmt.Fprintf(os.Stderr, "\nThe commands are listed below. Use '%s <command> -h' for more help.\n\n", os.Args[0])
		for _, cmd := range commands {
			fmt.Fprintf(os.Stderr, "  %s", cmd.name)
			if cmd.params != "" {
				fmt.Fprintf(os.Stderr, " %s", cmd.params)
			}
			fmt.Fprintf(os.Stderr, "\n")
		}
		fmt.Fprintf(os.Stderr, "\n")
	}

	flags := dbconfigs.AppConfig | dbconfigs.DbaConfig |
		dbconfigs.FilteredConfig | dbconfigs.ReplConfig
	dbconfigs.RegisterFlags(flags)
	flag.Parse()

	tabletAddr = netutil.JoinHostPort("localhost", int32(*port))
	mycnf := mysqlctl.NewMycnf(uint32(*tabletUID), int32(*mysqlPort))

	if *mysqlSocket != "" {
		mycnf.SocketFile = *mysqlSocket
	}

	dbcfgs, err := dbconfigs.Init(mycnf.SocketFile, flags)
	if err != nil {
		log.Errorf("%v", err)
		exit.Return(1)
	}
	mysqld := mysqlctl.NewMysqld("Dba", "App", mycnf, &dbcfgs.Dba, &dbcfgs.App.ConnParams, &dbcfgs.Repl)
	defer mysqld.Close()

	action := flag.Arg(0)
	for _, cmd := range commands {
		if cmd.name == action {
			subFlags := flag.NewFlagSet(action, flag.ExitOnError)
			subFlags.Usage = func() {
				fmt.Fprintf(os.Stderr, "Usage: %s %s %s\n\n", os.Args[0], cmd.name, cmd.params)
				fmt.Fprintf(os.Stderr, "%s\n\n", cmd.help)
				subFlags.PrintDefaults()
			}

			if err := cmd.method(mysqld, subFlags, flag.Args()[1:]); err != nil {
				log.Error(err)
				exit.Return(1)
			}
			return
		}
	}
	log.Errorf("invalid action: %v", action)
	exit.Return(1)
}

func initAgent(tabletAlias topo.TabletAlias, dbcfgs dbconfigs.DBConfigs, mycnf *mysqlctl.Mycnf, dbConfigsFile, dbCredentialsFile string) error {
	topoServer := topo.GetServer()
	umgmt.AddCloseCallback(func() {
		topo.CloseServers()
	})

	bindAddr := fmt.Sprintf(":%v", *port)
	secureAddr := ""
	if *securePort != 0 {
		secureAddr = fmt.Sprintf(":%v", *securePort)
	}

	// Action agent listens to changes in zookeeper and makes
	// modifications to this tablet.
	agent, err := tm.NewActionAgent(topoServer, tabletAlias, *mycnfFile, dbConfigsFile, dbCredentialsFile)
	if err != nil {
		return err
	}
	agent.AddChangeCallback(func(oldTablet, newTablet topo.Tablet) {
		if newTablet.IsServingType() {
			if dbcfgs.App.Dbname == "" {
				dbcfgs.App.Dbname = newTablet.DbName()
			}
			dbcfgs.App.KeyRange = newTablet.KeyRange
			dbcfgs.App.Keyspace = newTablet.Keyspace
			dbcfgs.App.Shard = newTablet.Shard
			// Transitioning from replica to master, first disconnect
			// existing connections. "false" indicateds that clients must
			// re-resolve their endpoint before reconnecting.
			if newTablet.Type == topo.TYPE_MASTER && oldTablet.Type != topo.TYPE_MASTER {
				ts.DisallowQueries(false)
			}
			qrs := loadCustomRules()
			if dbcfgs.App.KeyRange.IsPartial() {
				qr := ts.NewQueryRule("enforce keyspace_id range", "keyspace_id_not_in_range", ts.QR_FAIL_QUERY)
				qr.AddPlanCond(sqlparser.PLAN_INSERT_PK)
				err = qr.AddBindVarCond("keyspace_id", true, true, ts.QR_NOTIN, dbcfgs.App.KeyRange)
				if err != nil {
					relog.Warning("Unable to add keyspace rule: %v", err)
				} else {
					qrs.Add(qr)
				}
			}
			ts.AllowQueries(dbcfgs.App, schemaOverrides, qrs)
			mysqlctl.EnableUpdateStreamService(string(newTablet.Type), dbcfgs)
			if newTablet.Type != topo.TYPE_MASTER {
				ts.StartRowCacheInvalidation()
			}
		} else {
			ts.DisallowQueries(false)
			mysqlctl.DisableUpdateStreamService()
			if newTablet.Type != topo.TYPE_MASTER {
				ts.StopRowCacheInvalidation()
			}
		}
	})

	mysqld := mysqlctl.NewMysqld(mycnf, dbcfgs.Dba, dbcfgs.Repl)
	if err := agent.Start(bindAddr, secureAddr, mysqld.Addr()); err != nil {
		return err
	}
	umgmt.AddCloseCallback(func() {
		agent.Stop()
	})

	// register the RPC services from the agent
	agent.RegisterQueryService(mysqld)

	return nil
}