Golang logutil.Flush函数代码示例

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

	zknsDomain := flag.String("zkns-domain", "", "The naming hierarchy portion to serve")
	zknsRoot := flag.String("zkns-root", "", "The root path from which to resolve")
	bindAddr := flag.String("bind-addr", ":31981", "Bind the debug http server")
	flag.Parse()

	if *bindAddr != "" {
		go func() {
			err := http.ListenAndServe(*bindAddr, nil)
			if err != nil {
				log.Errorf("ListenAndServe: %s", err)
				exit.Return(1)
			}
		}()
	}

	zconn := zk.NewMetaConn()
	fqdn := netutil.FullyQualifiedHostnameOrPanic()
	zr1 := newZknsResolver(zconn, fqdn, *zknsDomain, *zknsRoot)
	pd := &pdns{zr1}
	pd.Serve(os.Stdin, os.Stdout)
	os.Stdout.Close()
}

func main() {
	defer logutil.Flush()

	flag.Parse()
	args := flag.Args()

	if len(args) == 0 {
		flag.Usage()
		os.Exit(1)
	}

	zkConfig := zkctl.MakeZkConfigFromString(*zkCfg, uint32(*myId))
	zkd := zkctl.NewZkd(zkConfig)

	action := flag.Arg(0)
	var err error
	switch action {
	case "init":
		err = zkd.Init()
	case "shutdown":
		err = zkd.Shutdown()
	case "start":
		err = zkd.Start()
	case "teardown":
		err = zkd.Teardown()
	default:
		log.Fatalf("invalid action: %v", action)
	}
	if err != nil {
		log.Fatalf("failed %v: %v", action, err)
	}
}

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

	flag.Parse()

	zkConfig := zkctl.MakeZkConfigFromString(*zkCfg, uint32(*myId))
	zkd := zkctl.NewZkd(zkConfig)

	if zkd.Inited() {
		log.Infof("already initialized, starting without init...")
		if err := zkd.Start(); err != nil {
			log.Errorf("failed start: %v", err)
			exit.Return(255)
		}
	} else {
		log.Infof("initializing...")
		if err := zkd.Init(); err != nil {
			log.Errorf("failed init: %v", err)
			exit.Return(255)
		}
	}

	log.Infof("waiting for signal or server shutdown...")
	sig := make(chan os.Signal)
	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
	select {
	case <-zkd.Done():
		log.Infof("server shut down on its own")
	case <-sig:
		log.Infof("signal received, shutting down server")
		zkd.Shutdown()
	}
}

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

	flag.Parse()
	args := flag.Args()
	if len(args) != 0 {
		flag.Usage()
		os.Exit(1)
	}

	if *fromTopo == "" || *toTopo == "" {
		log.Errorf("Need both from and to topo")
		exit.Return(1)
	}

	ctx := context.Background()
	fromTS := topo.GetServerByName(*fromTopo)
	toTS := topo.GetServerByName(*toTopo)

	if *doKeyspaces {
		helpers.CopyKeyspaces(ctx, fromTS.Impl, toTS.Impl)
	}
	if *doShards {
		helpers.CopyShards(ctx, fromTS.Impl, toTS.Impl, *deleteKeyspaceShards)
	}
	if *doShardReplications {
		helpers.CopyShardReplications(ctx, fromTS.Impl, toTS.Impl)
	}
	if *doTablets {
		helpers.CopyTablets(ctx, fromTS.Impl, toTS.Impl)
	}
}

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

	flag.Parse()
	args := flag.Args()
	if len(args) != 0 {
		flag.Usage()
		os.Exit(1)
	}

	if *fromTopo == "" || *toTopo == "" {
		log.Fatalf("Need both from and to topo")
	}

	fromTS := topo.GetServerByName(*fromTopo)
	toTS := topo.GetServerByName(*toTopo)

	if *doKeyspaces {
		helpers.CopyKeyspaces(fromTS, toTS)
	}
	if *doShards {
		helpers.CopyShards(fromTS, toTS, *deleteKeyspaceShards)
	}
	if *doShardReplications {
		helpers.CopyShardReplications(fromTS, toTS)
	}
	if *doTablets {
		helpers.CopyTablets(fromTS, toTS)
	}
}

func main() {
	defer exit.Recover()
	defer logutil.Flush()
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage of %v:\n", os.Args[0])
		flag.PrintDefaults()
		fmt.Fprintf(os.Stderr, doc)
	}
	flag.Parse()
	args := flag.Args()
	if len(args) == 0 {
		flag.Usage()
		exit.Return(1)
	}

	if *zkAddrs != "" {
		var err error
		zconn, _, err = zk.DialZkTimeout(*zkAddrs, 5*time.Second, 10*time.Second)
		if err != nil {
			log.Errorf("zk connect failed: %v", err.Error())
			exit.Return(1)
		}
	}

	cmdName := args[0]
	args = args[1:]
	if cmd, ok := cmdMap[cmdName]; ok {
		subFlags := flag.NewFlagSet(cmdName, flag.ExitOnError)
		if err := cmd(subFlags, args); err != nil {
			log.Error(err)
			exit.Return(1)
		}
	}
}

func init() {
	onInit(func() {
		http.HandleFunc("/debug/flushlogs", func(w http.ResponseWriter, r *http.Request) {
			logutil.Flush()
			fmt.Fprint(w, "flushed")
		})
	})
}

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")
	}
}

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

	flag.Parse()
	args := flag.Args()
	if len(args) == 0 {
		flag.Usage()
		exit.Return(1)
	}

	if *cpuProfile != "" {
		f, err := os.Create(*cpuProfile)
		if err != nil {
			log.Error(err)
			exit.Return(1)
		}
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	ctx := context.Background()
	if *mode == "getSrvKeyspaceNames" {
		rpcClient := connect()
		if len(args) == 1 {
			getSrvKeyspaceNames(ctx, rpcClient, args[0], true)
		} else {
			log.Errorf("getSrvKeyspaceNames only takes one argument")
			exit.Return(1)
		}

	} else if *mode == "getSrvKeyspace" {
		rpcClient := connect()
		if len(args) == 2 {
			getSrvKeyspace(ctx, rpcClient, args[0], args[1], true)
		} else {
			log.Errorf("getSrvKeyspace only takes two arguments")
			exit.Return(1)
		}

	} else if *mode == "getEndPoints" {
		rpcClient := connect()
		if len(args) == 4 {
			getEndPoints(ctx, rpcClient, args[0], args[1], args[2], args[3], true)
		} else {
			log.Errorf("getEndPoints only takes four arguments")
			exit.Return(1)
		}

	} else if *mode == "qps" {
		qps(ctx, args[0], args[1:])

	} else {
		flag.Usage()
		log.Errorf("Invalid mode: %v", *mode)
		exit.Return(1)
	}
}

func main() {
	defer exit.Recover()

	flag.Parse()
	args := flag.Args()

	servenv.Init()
	defer servenv.Close()

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

	wi = worker.NewInstance(ts, *cell, *commandDisplayInterval)
	wi.InstallSignalHandlers()
	wi.InitStatusHandling()

	if len(args) == 0 {
		// In interactive mode, initialize the web UI to choose a command.
		wi.InitInteractiveMode()
	} else {
		// In single command mode, just run it.
		worker, done, err := wi.RunCommand(context.Background(), args, nil /*custom wrangler*/, true /*runFromCli*/)
		if err != nil {
			log.Error(err)
			exit.Return(1)
		}
		// Run the subsequent, blocking wait asynchronously.
		go func() {
			if err := wi.WaitForCommand(worker, done); err != nil {
				log.Error(err)
				logutil.Flush()
				// We cannot use exit.Return() here because we are in a different go routine now.
				os.Exit(1)
			}
			logutil.Flush()
			os.Exit(0)
		}()
	}

	servenv.RunDefault()
}

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

	flag.Parse()
	args := flag.Args()
	if len(args) == 0 {
		flag.Usage()
		exit.Return(1)
	}
	action := args[0]
	installSignalHandlers()

	startMsg := fmt.Sprintf("USER=%v SUDO_USER=%v %v", os.Getenv("USER"), os.Getenv("SUDO_USER"), strings.Join(os.Args, " "))

	if syslogger, err := syslog.New(syslog.LOG_INFO, "vtctl "); err == nil {
		syslogger.Info(startMsg)
	} else {
		log.Warningf("cannot connect to syslog: %v", err)
	}

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

	wr := wrangler.New(logutil.NewConsoleLogger(), topoServer, *waitTime, *lockWaitTimeout)

	actionPath, err := vtctl.RunCommand(wr, args)
	switch err {
	case vtctl.ErrUnknownCommand:
		flag.Usage()
		exit.Return(1)
	case nil:
		// keep going
	default:
		log.Errorf("action failed: %v %v", action, err)
		exit.Return(255)
	}

	if actionPath != "" {
		if *noWaitForAction {
			fmt.Println(actionPath)
		} else {
			err := wr.WaitForCompletion(actionPath)
			if err != nil {
				log.Error(err.Error())
				exit.Return(255)
			} else {
				log.Infof("action completed: %v", actionPath)
			}
		}
	}
}

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)
}

func main() {
	defer logutil.Flush()

	flag.Parse()
	args := flag.Args()

	if len(args) == 0 {
		flag.Usage()
		os.Exit(1)
	}

	zkConfig := zkctl.MakeZkConfigFromString(*zkCfg, uint32(*myId))
	zkd := zkctl.NewZkd(zkConfig)

	action := flag.Arg(0)
	var err error
	var waitForSignal bool
	switch action {
	case "init":
		err = zkd.Init()
		waitForSignal = *follow
	case "shutdown":
		err = zkd.Shutdown()
	case "start":
		err = zkd.Start()
		waitForSignal = *follow
	case "teardown":
		err = zkd.Teardown()
	default:
		log.Fatalf("invalid action: %v", action)
	}
	if err != nil {
		log.Fatalf("failed %v: %v", action, err)
	}

	if waitForSignal {
		log.Infof("waiting for signal or server shutdown...")
		sig := make(chan os.Signal)
		signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
		select {
		case <-zkd.Done():
			log.Infof("server shut down on its own")
		case <-sig:
			log.Infof("signal received, shutting down server")
			zkd.Shutdown()
		}
	}
}

func main() {
	defer logutil.Flush()

	dbconfigs.RegisterFlags()
	flag.Parse()

	dbcfgs, err := dbconfigs.Init(*mysqlSocketFile)
	if err != nil {
		log.Fatalf("Failed to init dbconfigs: %v", err)
	}

	pc := primecache.NewPrimeCache(dbcfgs, *relayLogsPath)
	pc.WorkerCount = *workerCount
	pc.SleepDuration = *sleepDuration

	pc.Loop()
}

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")
	}

	dbconfigs.RegisterFlags(dbconfigFlags)
	flag.Parse()

	tabletAddr = netutil.JoinHostPort("localhost", int32(*port))

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