Golang util.ParseReaderOpts函数代码示例

func newReaderFileLogger(topic string) (*ReaderFileLogger, error) {
	f, err := NewFileLogger(*gzipEnabled, *gzipLevel, *filenameFormat, topic)
	if err != nil {
		return nil, err
	}

	cfg := nsq.NewConfig()
	err = util.ParseReaderOpts(cfg, readerOpts)
	if err != nil {
		return nil, err
	}
	cfg.Set("max_in_flight", *maxInFlight)

	// TODO: remove, deprecated
	if hasArg("verbose") {
		log.Printf("WARNING: --verbose is deprecated in favor of --reader-opt=verbose")
		cfg.Set("verbose", true)
	}

	r, err := nsq.NewConsumer(topic, *channel, cfg)
	if err != nil {
		return nil, err
	}
	r.SetLogger(log.New(os.Stderr, "", log.LstdFlags), nsq.LogLevelInfo)

	r.SetHandler(f)

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQD(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for _, addrString := range lookupdHTTPAddrs {
		log.Printf("lookupd addr %s", addrString)
		err := r.ConnectToNSQLookupd(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	return &ReaderFileLogger{
		R: r,
		F: f,
	}, nil
}

func newReaderFileLogger(topic string) (*ReaderFileLogger, error) {
	f, err := NewFileLogger(*gzipEnabled, *gzipLevel, *filenameFormat, topic)
	if err != nil {
		return nil, err
	}

	r, err := nsq.NewReader(topic, *channel)
	if err != nil {
		return nil, err
	}
	err = util.ParseReaderOpts(r, readerOpts)
	if err != nil {
		return nil, err
	}
	r.SetMaxInFlight(*maxInFlight)
	r.AddAsyncHandler(f)

	// TODO: remove, deprecated
	if hasArg("verbose") {
		log.Printf("WARNING: --verbose is deprecated in favor of --reader-opt=verbose")
		r.Configure("verbose", true)
	}

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQ(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for _, addrString := range lookupdHTTPAddrs {
		log.Printf("lookupd addr %s", addrString)
		err := r.ConnectToLookupd(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	return &ReaderFileLogger{
		R: r,
		F: f,
	}, nil
}

func newReaderFileLogger(topic string) (*ReaderFileLogger, error) {
	f, err := NewFileLogger(*gzipEnabled, *gzipLevel, *filenameFormat, topic)
	if err != nil {
		return nil, err
	}

	cfg := nsq.NewConfig()
	cfg.UserAgent = fmt.Sprintf("nsq_to_file/%s go-nsq/%s", util.BINARY_VERSION, nsq.VERSION)
	err = util.ParseReaderOpts(cfg, readerOpts)
	if err != nil {
		return nil, err
	}
	cfg.MaxInFlight = *maxInFlight

	r, err := nsq.NewConsumer(topic, *channel, cfg)
	if err != nil {
		return nil, err
	}
	r.SetLogger(log.New(os.Stderr, "", log.LstdFlags), nsq.LogLevelInfo)

	r.AddHandler(f)

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQD(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for _, addrString := range lookupdHTTPAddrs {
		log.Printf("lookupd addr %s", addrString)
		err := r.ConnectToNSQLookupd(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	return &ReaderFileLogger{
		R: r,
		F: f,
	}, nil
}

func main() {
	logger = log.New(os.Stderr, "", log.LstdFlags)

	// handle stopping
	stopChan := make(chan bool)
	termChan := make(chan os.Signal, 1)
	signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	// parse flags
	flag.Parse()
	if len(*topic) == 0 {
		fatal(true, "Must specify a valid topic")
	}
	if len(*delimiter) != 1 {
		fatal(true, "Delimiter must be a single byte")
	}

	// prepare the configuration
	wcfg := nsq.NewConfig()
	wcfg.UserAgent = fmt.Sprintf("to_nsq/%s go-nsq/%s", util.BINARY_VERSION, nsq.VERSION)
	if err := util.ParseReaderOpts(wcfg, readerOpts); err != nil {
		fatal(true, err)
	}

	// make the producers
	producers := make(map[string]*nsq.Producer)
	for _, addr := range destNsqdTCPAddrs {
		producer, err := nsq.NewProducer(addr, wcfg)
		if err != nil {
			fatal(true, "failed creating producer", err)
		}
		producer.SetLogger(logger, nsq.LogLevelInfo)
		producers[addr] = producer
		defer producer.Stop()
	}
	if len(producers) == 0 {
		fatal(true, "Must specify at least one nsqd-tcp-address")
	}

	var fatalErr error

	// scan the input
	r := bufio.NewReader(os.Stdin)
	delim := (*delimiter)[0]
	go func() {
		for {
			if err := readAndPublish(r, delim, producers); err != nil {
				if err != io.EOF {
					fatalErr = err
				}
				stopChan <- true // stop
				break
			}
		}
	}()

	// wait for things to finish
	select {
	case <-termChan:
	case <-stopChan:
	}

	// if a fatal error occurred - report it
	if fatalErr != nil {
		fatal(false, fatalErr)
	}

}

func main() {
	var selectedMode int

	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_to_nsq v%s\n", util.BINARY_VERSION)
		return
	}

	if *topic == "" || *channel == "" {
		log.Fatalf("--topic and --channel are required")
	}

	if *destTopic == "" {
		*destTopic = *topic
	}

	if !util.IsValidTopicName(*topic) {
		log.Fatalf("--topic is invalid")
	}

	if !util.IsValidTopicName(*destTopic) {
		log.Fatalf("--destination-topic is invalid")
	}

	if !util.IsValidChannelName(*channel) {
		log.Fatalf("--channel is invalid")
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required")
	}
	if len(nsqdTCPAddrs) > 0 && len(lookupdHTTPAddrs) > 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	if len(destNsqdTCPAddrs) == 0 {
		log.Fatalf("--destination-nsqd-tcp-address required")
	}

	switch *mode {
	case "round-robin":
		selectedMode = ModeRoundRobin
	case "hostpool":
		selectedMode = ModeHostPool
	}

	termChan := make(chan os.Signal, 1)
	signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	cfg := nsq.NewConfig()

	err := util.ParseReaderOpts(cfg, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}
	cfg.Set("max_in_flight", *maxInFlight)

	// TODO: remove, deprecated
	if hasArg("verbose") {
		log.Printf("WARNING: --verbose is deprecated in favor of --reader-opt=verbose")
		cfg.Set("verbose", true)
	}

	// TODO: remove, deprecated
	if hasArg("max-backoff-duration") {
		log.Printf("WARNING: --max-backoff-duration is deprecated in favor of --reader-opt=max_backoff_duration=X")
		cfg.Set("max_backoff_duration", *maxBackoffDuration)
	}

	r, err := nsq.NewConsumer(*topic, *channel, cfg)
	if err != nil {
		log.Fatalf(err.Error())
	}
	r.SetLogger(log.New(os.Stderr, "", log.LstdFlags), nsq.LogLevelInfo)

	wcfg := nsq.NewConfig()
	wcfg.Set("heartbeat_interval", nsq.DefaultClientTimeout/2)
	producers := make(map[string]*nsq.Producer)
	for _, addr := range destNsqdTCPAddrs {
		producers[addr] = nsq.NewProducer(addr, wcfg)
	}

	handler := &PublishHandler{
		addresses: destNsqdTCPAddrs,
		producers: producers,
		mode:      selectedMode,
		reqs:      make(Durations, 0, *statusEvery),
		hostPool:  hostpool.New(destNsqdTCPAddrs),
		respChan:  make(chan *nsq.ProducerTransaction, len(destNsqdTCPAddrs)),
	}
	r.SetConcurrentHandlers(handler, len(destNsqdTCPAddrs))
	for i := 0; i < len(destNsqdTCPAddrs); i++ {
		go handler.responder()
	}

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQD(addrString)
		if err != nil {
//.........这里部分代码省略.........

func main() {
	var publisher Publisher
	var addresses util.StringArray
	var selectedMode int

	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_to_http v%s\n", util.BINARY_VERSION)
		return
	}

	if *topic == "" || *channel == "" {
		log.Fatalf("--topic and --channel are required")
	}

	if *contentType != flag.Lookup("content-type").DefValue {
		if len(postAddrs) == 0 {
			log.Fatalf("--content-type only used with --post")
		}
		if len(*contentType) == 0 {
			log.Fatalf("--content-type requires a value when used")
		}
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required")
	}
	if len(nsqdTCPAddrs) > 0 && len(lookupdHTTPAddrs) > 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	if len(getAddrs) == 0 && len(postAddrs) == 0 {
		log.Fatalf("--get or --post required")
	}
	if len(getAddrs) > 0 && len(postAddrs) > 0 {
		log.Fatalf("use --get or --post not both")
	}
	if len(getAddrs) > 0 {
		for _, get := range getAddrs {
			if strings.Count(get, "%s") != 1 {
				log.Fatal("invalid GET address - must be a printf string")
			}
		}
	}

	switch *mode {
	case "multicast":
		log.Printf("WARNING: multicast mode is deprecated in favor of using separate nsq_to_http on different channels (and will be dropped in a future release)")
		selectedMode = ModeAll
	case "round-robin":
		selectedMode = ModeRoundRobin
	case "hostpool":
		selectedMode = ModeHostPool
	}

	// TODO: remove, deprecated
	if hasArg("--round-robin") {
		log.Printf("WARNING: --round-robin is deprecated in favor of --mode=round-robin")
		selectedMode = ModeRoundRobin
	}

	// TODO: remove, deprecated
	if hasArg("throttle-fraction") {
		log.Printf("WARNING: --throttle-fraction is deprecatedin favor of --sample=X")
		*sample = *throttleFraction
	}

	if *sample > 1.0 || *sample < 0.0 {
		log.Fatalf("ERROR: --sample must be between 0.0 and 1.0")
	}

	// TODO: remove, deprecated
	if hasArg("http-timeout-ms") {
		log.Printf("WARNING: --http-timeout-ms is deprecated in favor of --http-timeout=X")
		*httpTimeout = time.Duration(*httpTimeoutMs) * time.Millisecond
	}

	termChan := make(chan os.Signal, 1)
	signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	if len(postAddrs) > 0 {
		publisher = &PostPublisher{}
		addresses = postAddrs
	} else {
		publisher = &GetPublisher{}
		addresses = getAddrs
	}

	cfg := nsq.NewConfig()
	cfg.UserAgent = fmt.Sprintf("nsq_to_http/%s go-nsq/%s", util.BINARY_VERSION, nsq.VERSION)

	err := util.ParseReaderOpts(cfg, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}
	cfg.MaxInFlight = *maxInFlight

	// TODO: remove, deprecated
	if hasArg("max-backoff-duration") {
//.........这里部分代码省略.........

func main() {
	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_tail v%s\n", util.BINARY_VERSION)
		return
	}

	if *channel == "" {
		rand.Seed(time.Now().UnixNano())
		*channel = fmt.Sprintf("tail%06d#ephemeral", rand.Int()%999999)
	}

	if *topic == "" {
		log.Fatalf("--topic is required")
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required")
	}
	if len(nsqdTCPAddrs) > 0 && len(lookupdHTTPAddrs) > 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	// Don't ask for more messages than we want
	if *totalMessages > 0 && *totalMessages < *maxInFlight {
		*maxInFlight = *totalMessages
	}

	cfg := nsq.NewConfig()
	cfg.MaxInFlight = *maxInFlight

	err := util.ParseReaderOpts(cfg, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}

	r, err := nsq.NewConsumer(*topic, *channel, cfg)
	if err != nil {
		log.Fatalf(err.Error())
	}
	r.SetLogger(log.New(os.Stderr, "", log.LstdFlags), nsq.LogLevelInfo)

	r.SetHandler(&TailHandler{totalMessages: *totalMessages})

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQD(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for _, addrString := range lookupdHTTPAddrs {
		log.Printf("lookupd addr %s", addrString)
		err := r.ConnectToNSQLookupd(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for {
		select {
		case <-r.StopChan:
			return
		case <-sigChan:
			r.Stop()
		}
	}
}

func main() {
	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_to_file v%s\n", util.BINARY_VERSION)
		return
	}

	if *topic == "" || *channel == "" {
		log.Fatalf("--topic and --channel are required")
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required.")
	}
	if len(nsqdTCPAddrs) != 0 && len(lookupdHTTPAddrs) != 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	if *gzipLevel < 1 || *gzipLevel > 9 {
		log.Fatalf("invalid --gzip-level value (%d), should be 1-9", *gzipLevel)
	}

	// TODO: remove, deprecated
	if hasArg("gzip-compression") {
		log.Printf("WARNING: --gzip-compression is deprecated in favor of --gzip-level")
		switch *gzipCompression {
		case 1:
			*gzipLevel = gzip.BestSpeed
		case 2:
			*gzipLevel = gzip.BestCompression
		case 3:
			*gzipLevel = gzip.DefaultCompression
		default:
			log.Fatalf("invalid --gzip-compression value (%d), should be 1,2,3", *gzipCompression)
		}
	}

	hupChan := make(chan os.Signal, 1)
	termChan := make(chan os.Signal, 1)
	signal.Notify(hupChan, syscall.SIGHUP)
	signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM)

	f, err := NewFileLogger(*gzipEnabled, *gzipLevel, *filenameFormat)
	if err != nil {
		log.Fatal(err.Error())
	}

	r, err := nsq.NewReader(*topic, *channel)
	if err != nil {
		log.Fatalf(err.Error())
	}
	err = util.ParseReaderOpts(r, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}
	r.SetMaxInFlight(*maxInFlight)
	r.AddAsyncHandler(f)

	// TODO: remove, deprecated
	if hasArg("verbose") {
		log.Printf("WARNING: --verbose is deprecated in favor of --reader-opt=verbose")
		r.Configure("verbose", true)
	}

	go f.router(r, termChan, hupChan)

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQ(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for _, addrString := range lookupdHTTPAddrs {
		log.Printf("lookupd addr %s", addrString)
		err := r.ConnectToLookupd(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	<-f.ExitChan
}

func main() {
	var publisher Publisher
	var addresses util.StringArray
	var selectedMode int

	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_to_http v%s\n", util.BINARY_VERSION)
		return
	}

	if *topic == "" || *channel == "" {
		log.Fatalf("--topic and --channel are required")
	}

	if *contentType != flag.Lookup("content-type").DefValue {
		if len(postAddrs) == 0 {
			log.Fatalf("--content-type only used with --post")
		}
		if len(*contentType) == 0 {
			log.Fatalf("--content-type requires a value when used")
		}
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required")
	}
	if len(nsqdTCPAddrs) > 0 && len(lookupdHTTPAddrs) > 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	if len(getAddrs) == 0 && len(postAddrs) == 0 {
		log.Fatalf("--get or --post required")
	}
	if len(getAddrs) > 0 && len(postAddrs) > 0 {
		log.Fatalf("use --get or --post not both")
	}
	if len(getAddrs) > 0 {
		for _, get := range getAddrs {
			if strings.Count(get, "%s") != 1 {
				log.Fatal("invalid GET address - must be a printf string")
			}
		}
	}

	switch *mode {
	case "multicast":
		log.Printf("WARNING: multicast mode is deprecated in favor of using separate nsq_to_http on different channels (and will be dropped in a future release)")
		selectedMode = ModeAll
	case "round-robin":
		selectedMode = ModeRoundRobin
	case "hostpool":
		selectedMode = ModeHostPool
	}

	// TODO: remove, deprecated
	if hasArg("--round-robin") {
		log.Printf("WARNING: --round-robin is deprecated in favor of --mode=round-robin")
		selectedMode = ModeRoundRobin
	}

	// TODO: remove, deprecated
	if hasArg("throttle-fraction") {
		log.Printf("WARNING: --throttle-fraction is deprecatedin favor of --sample=X")
		*sample = *throttleFraction
	}

	if *sample > 1.0 || *sample < 0.0 {
		log.Fatalf("ERROR: --sample must be between 0.0 and 1.0")
	}

	// TODO: remove, deprecated
	if hasArg("http-timeout-ms") {
		log.Printf("WARNING: --http-timeout-ms is deprecated in favor of --http-timeout=X")
		*httpTimeout = time.Duration(*httpTimeoutMs) * time.Millisecond
	}

	termChan := make(chan os.Signal, 1)
	signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	if len(postAddrs) > 0 {
		publisher = &PostPublisher{}
		addresses = postAddrs
	} else {
		publisher = &GetPublisher{}
		addresses = getAddrs
	}

	r, err := nsq.NewReader(*topic, *channel)
	if err != nil {
		log.Fatalf(err.Error())
	}
	err = util.ParseReaderOpts(r, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}
	r.SetMaxInFlight(*maxInFlight)

	// TODO: remove, deprecated
//.........这里部分代码省略.........

func main() {
	var selectedMode int

	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_to_nsq v%s\n", util.BINARY_VERSION)
		return
	}

	if *topic == "" || *channel == "" {
		log.Fatalf("--topic and --channel are required")
	}

	if *destTopic == "" {
		*destTopic = *topic
	}

	if !nsq.IsValidTopicName(*topic) {
		log.Fatalf("--topic is invalid")
	}

	if !nsq.IsValidTopicName(*destTopic) {
		log.Fatalf("--destination-topic is invalid")
	}

	if !nsq.IsValidChannelName(*channel) {
		log.Fatalf("--channel is invalid")
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required")
	}
	if len(nsqdTCPAddrs) > 0 && len(lookupdHTTPAddrs) > 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	if len(destNsqdTCPAddrs) == 0 {
		log.Fatalf("--destination-nsqd-tcp-address required")
	}

	switch *mode {
	case "round-robin":
		selectedMode = ModeRoundRobin
	case "hostpool":
		selectedMode = ModeHostPool
	}

	termChan := make(chan os.Signal, 1)
	signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	r, err := nsq.NewReader(*topic, *channel)
	if err != nil {
		log.Fatalf(err.Error())
	}
	err = util.ParseReaderOpts(r, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}
	r.SetMaxInFlight(*maxInFlight)

	// TODO: remove, deprecated
	if hasArg("verbose") {
		log.Printf("WARNING: --verbose is deprecated in favor of --reader-opt=verbose")
		r.Configure("verbose", true)
	}

	// TODO: remove, deprecated
	if hasArg("max-backoff-duration") {
		log.Printf("WARNING: --max-backoff-duration is deprecated in favor of --reader-opt=max_backoff_duration=X")
		r.Configure("max_backoff_duration", *maxBackoffDuration)
	}

	writers := make(map[string]*nsq.Writer)
	for _, addr := range destNsqdTCPAddrs {
		writer := nsq.NewWriter(addr)
		writer.HeartbeatInterval = nsq.DefaultClientTimeout / 2
		writers[addr] = writer
	}

	for i := 0; i < len(destNsqdTCPAddrs); i++ {
		respChan := make(chan *nsq.WriterTransaction)
		handler := &PublishHandler{
			addresses: destNsqdTCPAddrs,
			writers:   writers,
			mode:      selectedMode,
			reqs:      make(Durations, 0, *statusEvery),
			id:        i,
			hostPool:  hostpool.New(destNsqdTCPAddrs),
			respChan:  respChan,
		}
		r.AddAsyncHandler(handler)
		go handler.responder()
	}

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQ(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
//.........这里部分代码省略.........

func main() {
	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_tail v%s\n", util.BINARY_VERSION)
		return
	}

	if *channel == "" {
		rand.Seed(time.Now().UnixNano())
		*channel = fmt.Sprintf("tail%06d#ephemeral", rand.Int()%999999)
	}

	if *topic == "" {
		log.Fatalf("--topic is required")
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required")
	}
	if len(nsqdTCPAddrs) > 0 && len(lookupdHTTPAddrs) > 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	r, err := nsq.NewReader(*topic, *channel)
	if err != nil {
		log.Fatalf(err.Error())
	}
	err = util.ParseReaderOpts(r, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}
	r.SetMaxInFlight(*maxInFlight)
	r.AddHandler(&TailHandler{})

	for _, addrString := range nsqdTCPAddrs {
		err := r.ConnectToNSQ(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for _, addrString := range lookupdHTTPAddrs {
		log.Printf("lookupd addr %s", addrString)
		err := r.ConnectToLookupd(addrString)
		if err != nil {
			log.Fatalf(err.Error())
		}
	}

	for {
		select {
		case <-r.ExitChan:
			return
		case <-sigChan:
			r.Stop()
		}
	}
}

func main() {
	var selectedMode int

	flag.Parse()

	if *showVersion {
		fmt.Printf("nsq_to_nsq v%s\n", util.BINARY_VERSION)
		return
	}

	if *topic == "" || *channel == "" {
		log.Fatalf("--topic and --channel are required")
	}

	if *destTopic == "" {
		*destTopic = *topic
	}

	if !util.IsValidTopicName(*topic) {
		log.Fatalf("--topic is invalid")
	}

	if !util.IsValidTopicName(*destTopic) {
		log.Fatalf("--destination-topic is invalid")
	}

	if !util.IsValidChannelName(*channel) {
		log.Fatalf("--channel is invalid")
	}

	if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
		log.Fatalf("--nsqd-tcp-address or --lookupd-http-address required")
	}
	if len(nsqdTCPAddrs) > 0 && len(lookupdHTTPAddrs) > 0 {
		log.Fatalf("use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	if len(destNsqdTCPAddrs) == 0 {
		log.Fatalf("--destination-nsqd-tcp-address required")
	}

	switch *mode {
	case "round-robin":
		selectedMode = ModeRoundRobin
	case "hostpool":
		selectedMode = ModeHostPool
	}

	termChan := make(chan os.Signal, 1)
	signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)

	cfg := nsq.NewConfig()
	cfg.UserAgent = fmt.Sprintf("nsq_to_nsq/%s go-nsq/%s", util.BINARY_VERSION, nsq.VERSION)

	err := util.ParseReaderOpts(cfg, readerOpts)
	if err != nil {
		log.Fatalf(err.Error())
	}
	cfg.MaxInFlight = *maxInFlight

	// TODO: remove, deprecated
	if hasArg("max-backoff-duration") {
		log.Printf("WARNING: --max-backoff-duration is deprecated in favor of --reader-opt=max_backoff_duration=X")
		cfg.MaxBackoffDuration = *maxBackoffDuration
	}

	r, err := nsq.NewConsumer(*topic, *channel, cfg)
	if err != nil {
		log.Fatalf("%s", err)
	}
	r.SetLogger(log.New(os.Stderr, "", log.LstdFlags), nsq.LogLevelInfo)

	wcfg := nsq.NewConfig()
	cfg.UserAgent = fmt.Sprintf("nsq_to_nsq/%s go-nsq/%s", util.BINARY_VERSION, nsq.VERSION)
	producers := make(map[string]*nsq.Producer)
	for _, addr := range destNsqdTCPAddrs {
		producer, err := nsq.NewProducer(addr, wcfg)
		if err != nil {
			log.Fatalf("failed creating producer %s", err)
		}
		producers[addr] = producer
	}

	perAddressStatus := make(map[string]*timermetrics.TimerMetrics)
	if len(destNsqdTCPAddrs) == 1 {
		// disable since there is only one address
		perAddressStatus[destNsqdTCPAddrs[0]] = timermetrics.NewTimerMetrics(0, "")
	} else {
		for _, a := range destNsqdTCPAddrs {
			perAddressStatus[a] = timermetrics.NewTimerMetrics(*statusEvery,
				fmt.Sprintf("[%s]:", a))
		}
	}

	handler := &PublishHandler{
		addresses:        destNsqdTCPAddrs,
		producers:        producers,
		mode:             selectedMode,
		hostPool:         hostpool.New(destNsqdTCPAddrs),
		respChan:         make(chan *nsq.ProducerTransaction, len(destNsqdTCPAddrs)),
//.........这里部分代码省略.........