Golang log.NewLogger函数代码示例

func initLogging(args *CommandLineArgs) {
	// Get and check log mode.
	LogModes = strings.Split(Cfg.Section("log").Key("mode").MustString("console"), ",")
	LogsPath = makeAbsolute(Cfg.Section("paths").Key("logs").String(), HomePath)

	LogConfigs = make([]util.DynMap, len(LogModes))
	for i, mode := range LogModes {
		mode = strings.TrimSpace(mode)
		sec, err := Cfg.GetSection("log." + mode)
		if err != nil {
			log.Fatal(4, "Unknown log mode: %s", mode)
		}

		// Log level.
		levelName := Cfg.Section("log."+mode).Key("level").In("Trace",
			[]string{"Trace", "Debug", "Info", "Warn", "Error", "Critical"})
		level, ok := logLevels[levelName]
		if !ok {
			log.Fatal(4, "Unknown log level: %s", levelName)
		}

		// Generate log configuration.
		switch mode {
		case "console":
			LogConfigs[i] = util.DynMap{"level": level}
		case "file":
			logPath := sec.Key("file_name").MustString(filepath.Join(LogsPath, "grafana.log"))
			os.MkdirAll(filepath.Dir(logPath), os.ModePerm)
			LogConfigs[i] = util.DynMap{
				"level":    level,
				"filename": logPath,
				"rotate":   sec.Key("log_rotate").MustBool(true),
				"maxlines": sec.Key("max_lines").MustInt(1000000),
				"maxsize":  1 << uint(sec.Key("max_size_shift").MustInt(28)),
				"daily":    sec.Key("daily_rotate").MustBool(true),
				"maxdays":  sec.Key("max_days").MustInt(7),
			}
		case "conn":
			LogConfigs[i] = util.DynMap{
				"level":          level,
				"reconnectOnMsg": sec.Key("reconnect_on_msg").MustBool(),
				"reconnect":      sec.Key("reconnect").MustBool(),
				"net":            sec.Key("protocol").In("tcp", []string{"tcp", "unix", "udp"}),
				"addr":           sec.Key("addr").MustString(":7020"),
			}
		case "smtp":
			LogConfigs[i] = util.DynMap{
				"level":     level,
				"user":      sec.Key("user").MustString("[email protected]"),
				"passwd":    sec.Key("passwd").MustString("******"),
				"host":      sec.Key("host").MustString("127.0.0.1:25"),
				"receivers": sec.Key("receivers").MustString("[]"),
				"subject":   sec.Key("subject").MustString("Diagnostic message from serve"),
			}
		case "database":
			LogConfigs[i] = util.DynMap{
				"level":  level,
				"driver": sec.Key("driver").String(),
				"conn":   sec.Key("conn").String(),
			}
		}

		cfgJsonBytes, _ := json.Marshal(LogConfigs[i])
		log.NewLogger(Cfg.Section("log").Key("buffer_len").MustInt64(10000), mode, string(cfgJsonBytes))
	}
}

func init() {
	IsWindows = runtime.GOOS == "windows"
	log.NewLogger(0, "console", `{"level": 0}`)
}

func main() {
	flag.Parse()

	log.NewLogger(0, "console", fmt.Sprintf(`{"level": %d, "formatting":true}`, *logLevel))

	if *showVersion {
		fmt.Println("nsq_metrics_to_stdout")
		return
	}

	if *channel == "" || *channel == "stdout<random-number>#ephemeral" {
		rand.Seed(time.Now().UnixNano())
		*channel = fmt.Sprintf("stdout%06d#ephemeral", rand.Int()%999999)
	}

	if *topic == "" {
		log.Fatal(4, "--topic is required")
	}

	if *nsqdTCPAddrs == "" && *lookupdHTTPAddrs == "" {
		log.Fatal(4, "--nsqd-tcp-address or --lookupd-http-address required")
	}
	if *nsqdTCPAddrs != "" && *lookupdHTTPAddrs != "" {
		log.Fatal(4, "use --nsqd-tcp-address or --lookupd-http-address not both")
	}

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

	cfg := nsq.NewConfig()
	cfg.UserAgent = "nsq_metrics_to_stdout"
	err := app.ParseOpts(cfg, *consumerOpts)
	if err != nil {
		log.Fatal(4, err.Error())
	}
	cfg.MaxInFlight = *maxInFlight

	consumer, err := nsq.NewConsumer(*topic, *channel, cfg)
	if err != nil {
		log.Fatal(4, err.Error())
	}

	handler, err := NewStdoutHandler()
	if err != nil {
		log.Fatal(4, err.Error())
	}

	consumer.AddHandler(handler)

	nsqdAdds := strings.Split(*nsqdTCPAddrs, ",")
	if len(nsqdAdds) == 1 && nsqdAdds[0] == "" {
		nsqdAdds = []string{}
	}
	err = consumer.ConnectToNSQDs(nsqdAdds)
	if err != nil {
		log.Fatal(4, err.Error())
	}
	log.Info("connected to nsqd")

	lookupdAdds := strings.Split(*lookupdHTTPAddrs, ",")
	if len(lookupdAdds) == 1 && lookupdAdds[0] == "" {
		lookupdAdds = []string{}
	}
	err = consumer.ConnectToNSQLookupds(lookupdAdds)
	if err != nil {
		log.Fatal(4, err.Error())
	}
	go func() {
		log.Info("starting listener for http/debug on %s", *listenAddr)
		log.Info("%s", http.ListenAndServe(*listenAddr, nil))
	}()

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

func init() {
	IsWindows = runtime.GOOS == "windows"
	log.NewLogger(0, "console", `{"level": 0, "formatting":true}`)
}

func main() {
	flag.Parse()

	// Only try and parse the conf file if it exists
	if _, err := os.Stat(*confFile); err == nil {
		conf, err := globalconf.NewWithOptions(&globalconf.Options{Filename: *confFile})
		if err != nil {
			log.Fatal(4, err.Error())
		}
		conf.ParseAll()
	}

	log.NewLogger(0, "console", fmt.Sprintf(`{"level": %d, "formatting":true}`, *logLevel))

	if *showVersion {
		fmt.Println("nsq_probe_events_to_elasticsearch")
		return
	}

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

	if *topic == "" {
		log.Fatal(4, "--topic is required")
	}

	if *nsqdTCPAddrs == "" && *lookupdHTTPAddrs == "" {
		log.Fatal(4, "--nsqd-tcp-address or --lookupd-http-address required")
	}
	if *nsqdTCPAddrs != "" && *lookupdHTTPAddrs != "" {
		log.Fatal(4, "use --nsqd-tcp-address or --lookupd-http-address not both")
	}

	hostname, err := os.Hostname()
	if err != nil {
		log.Fatal(4, err.Error())
	}
	metrics, err := helper.New(true, *statsdAddr, *statsdType, "nsq_probe_events_to_elasticsearch", strings.Replace(hostname, ".", "_", -1))
	if err != nil {
		log.Fatal(4, err.Error())
	}

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

	eventsToEsOK = metrics.NewCount("events_to_es.ok")
	eventsToEsFail = metrics.NewCount("events_to_es.fail")
	messagesSize = metrics.NewMeter("message_size", 0)
	msgsAge = metrics.NewMeter("message_age", 0)
	esPutDuration = metrics.NewTimer("es_put_duration", 0)
	msgsHandleOK = metrics.NewCount("handle.ok")
	msgsHandleFail = metrics.NewCount("handle.fail")

	cfg := nsq.NewConfig()
	cfg.UserAgent = "nsq_probe_events_to_elasticsearch"
	err = app.ParseOpts(cfg, *consumerOpts)
	if err != nil {
		log.Fatal(4, err.Error())
	}
	cfg.MaxInFlight = *maxInFlight

	consumer, err := insq.NewConsumer(*topic, *channel, cfg, "%s", metrics)

	if err != nil {
		log.Fatal(4, err.Error())
	}

	handler, err := NewESHandler()
	if err != nil {
		log.Fatal(4, err.Error())
	}

	consumer.AddConcurrentHandlers(handler, 80)

	nsqdAdds := strings.Split(*nsqdTCPAddrs, ",")
	if len(nsqdAdds) == 1 && nsqdAdds[0] == "" {
		nsqdAdds = []string{}
	}
	err = consumer.ConnectToNSQDs(nsqdAdds)
	if err != nil {
		log.Fatal(4, err.Error())
	}
	log.Info("connected to nsqd")

	lookupdAdds := strings.Split(*lookupdHTTPAddrs, ",")
	if len(lookupdAdds) == 1 && lookupdAdds[0] == "" {
		lookupdAdds = []string{}
	}
	err = consumer.ConnectToNSQLookupds(lookupdAdds)
	if err != nil {
		log.Fatal(4, err.Error())
	}
	go func() {
		log.Info("INFO starting listener for http/debug on %s", *listenAddr)
		httperr := http.ListenAndServe(*listenAddr, nil)
		if httperr != nil {
			log.Info(httperr.Error())
		}
//.........这里部分代码省略.........

func main() {
	flag.Parse()

	// Only try and parse the conf file if it exists
	if _, err := os.Stat(*confFile); err == nil {
		conf, err := globalconf.NewWithOptions(&globalconf.Options{Filename: *confFile})
		if err != nil {
			log.Fatal(4, "error with configuration file: %s", err)
			os.Exit(1)
		}
		conf.ParseAll()
	}

	log.NewLogger(0, "console", fmt.Sprintf(`{"level": %d, "formatting":true}`, *logLevel))

	if *showVersion {
		fmt.Println("metrics_tank")
		return
	}
	if *instance == "" {
		log.Fatal(0, "instance can't be empty")
	}
	hostname, err := os.Hostname()
	if err != nil {
		log.Fatal(0, "failed to lookup hostname. %s", err)
	}
	stats, err := helper.New(true, *statsdAddr, *statsdType, "metric_tank", strings.Replace(hostname, ".", "_", -1))
	if err != nil {
		log.Fatal(0, "failed to initialize statsd. %s", err)
	}

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

	if *topic == "" {
		log.Fatal(0, "--topic is required")
	}

	if *nsqdTCPAddrs == "" && *lookupdHTTPAddrs == "" {
		log.Fatal(0, "--nsqd-tcp-address or --lookupd-http-address required")
	}
	if *nsqdTCPAddrs != "" && *lookupdHTTPAddrs != "" {
		log.Fatal(0, "use --nsqd-tcp-address or --lookupd-http-address not both")
	}
	// set default cassandra address if none is set.
	if *cassandraAddrs == "" {
		*cassandraAddrs = "localhost"
	}

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

	cfg := nsq.NewConfig()
	cfg.UserAgent = "metrics_tank"
	err = app.ParseOpts(cfg, *consumerOpts)
	if err != nil {
		log.Fatal(0, "failed to parse nsq consumer options. %s", err)
	}
	cfg.MaxInFlight = *maxInFlight

	consumer, err := insq.NewConsumer(*topic, *channel, cfg, "%s", stats)
	if err != nil {
		log.Fatal(0, "Failed to create NSQ consumer. %s", err)
	}

	initMetrics(stats)

	err = InitCassandra()

	if err != nil {
		log.Fatal(4, "failed to initialize cassandra. %s", err)
	}

	set := strings.Split(*aggSettings, ",")
	finalSettings := make([]aggSetting, 0)
	for _, v := range set {
		if v == "" {
			continue
		}
		fields := strings.Split(v, ":")
		if len(fields) != 3 {
			log.Fatal(0, "bad agg settings")
		}
		aggSpan, err := strconv.Atoi(fields[0])
		if err != nil {
			log.Fatal(0, "bad agg settings", err)
		}
		aggChunkSpan, err := strconv.Atoi(fields[1])
		if err != nil {
			log.Fatal(0, "bad agg settings", err)
		}
		aggNumChunks, err := strconv.Atoi(fields[2])
		if err != nil {
			log.Fatal(0, "bad agg settings", err)
		}
		finalSettings = append(finalSettings, aggSetting{uint32(aggSpan), uint32(aggChunkSpan), uint32(aggNumChunks)})
	}

//.........这里部分代码省略.........