Example #1
0
func main() {
	reload := make(chan bool, 1)
	reload <- true
	for <-reload {
		reload <- false
		flag.Usage = usageExit
		flag.Parse()

		if flag.NFlag() == 0 {
			usageExit()
		}

		var inputFilters []string
		if *fInputFiltersLegacy != "" {
			inputFilter := strings.TrimSpace(*fInputFiltersLegacy)
			inputFilters = strings.Split(":"+inputFilter+":", ":")
		}
		if *fInputFilters != "" {
			inputFilter := strings.TrimSpace(*fInputFilters)
			inputFilters = strings.Split(":"+inputFilter+":", ":")
		}

		var outputFilters []string
		if *fOutputFiltersLegacy != "" {
			outputFilter := strings.TrimSpace(*fOutputFiltersLegacy)
			outputFilters = strings.Split(":"+outputFilter+":", ":")
		}
		if *fOutputFilters != "" {
			outputFilter := strings.TrimSpace(*fOutputFilters)
			outputFilters = strings.Split(":"+outputFilter+":", ":")
		}

		if *fVersion {
			v := fmt.Sprintf("Telegraf - Version %s", Version)
			fmt.Println(v)
			return
		}

		if *fSampleConfig {
			config.PrintSampleConfig(inputFilters, outputFilters)
			return
		}

		if *fUsage != "" {
			if err := config.PrintInputConfig(*fUsage); err != nil {
				if err2 := config.PrintOutputConfig(*fUsage); err2 != nil {
					log.Fatalf("%s and %s", err, err2)
				}
			}
			return
		}

		var (
			c   *config.Config
			err error
		)

		if *fConfig != "" {
			c = config.NewConfig()
			c.OutputFilters = outputFilters
			c.InputFilters = inputFilters
			err = c.LoadConfig(*fConfig)
			if err != nil {
				log.Fatal(err)
			}
		} else {
			fmt.Println("Usage: Telegraf")
			flag.PrintDefaults()
			return
		}

		if *fConfigDirectoryLegacy != "" {
			err = c.LoadDirectory(*fConfigDirectoryLegacy)
			if err != nil {
				log.Fatal(err)
			}
		}

		if *fConfigDirectory != "" {
			err = c.LoadDirectory(*fConfigDirectory)
			if err != nil {
				log.Fatal(err)
			}
		}
		if len(c.Outputs) == 0 {
			log.Fatalf("Error: no outputs found, did you provide a valid config file?")
		}
		if len(c.Inputs) == 0 {
			log.Fatalf("Error: no plugins found, did you provide a valid config file?")
		}

		ag, err := telegraf.NewAgent(c)
		if err != nil {
			log.Fatal(err)
		}

		if *fDebug {
			ag.Config.Agent.Debug = true
		}

		if *fQuiet {
			ag.Config.Agent.Quiet = true
		}

		if *fTest {
			err = ag.Test()
			if err != nil {
				log.Fatal(err)
			}
			return
		}

		err = ag.Connect()
		if err != nil {
			log.Fatal(err)
		}

		shutdown := make(chan struct{})
		signals := make(chan os.Signal)
		signal.Notify(signals, os.Interrupt, syscall.SIGHUP)
		go func() {
			sig := <-signals
			if sig == os.Interrupt {
				close(shutdown)
			}
			if sig == syscall.SIGHUP {
				log.Printf("Reloading Telegraf config\n")
				<-reload
				reload <- true
				close(shutdown)
			}
		}()

		log.Printf("Starting Telegraf (version %s)\n", Version)
		log.Printf("Loaded outputs: %s", strings.Join(c.OutputNames(), " "))
		log.Printf("Loaded plugins: %s", strings.Join(c.InputNames(), " "))
		log.Printf("Tags enabled: %s", c.ListTags())

		if *fPidfile != "" {
			f, err := os.Create(*fPidfile)
			if err != nil {
				log.Fatalf("Unable to create pidfile: %s", err)
			}

			fmt.Fprintf(f, "%d\n", os.Getpid())

			f.Close()
		}

		ag.Run(shutdown)
	}
}
Example #2
0
func main() {
	flag.Parse()

	var pluginFilters []string
	if *fPLuginFilters != "" {
		pluginsFilter := strings.TrimSpace(*fPLuginFilters)
		pluginFilters = strings.Split(":"+pluginsFilter+":", ":")
	}

	var outputFilters []string
	if *fOutputFilters != "" {
		outputFilter := strings.TrimSpace(*fOutputFilters)
		outputFilters = strings.Split(":"+outputFilter+":", ":")
	}

	if *fVersion {
		v := fmt.Sprintf("Telegraf - Version %s", Version)
		fmt.Println(v)
		return
	}

	if *fSampleConfig {
		config.PrintSampleConfig(pluginFilters, outputFilters)
		return
	}

	if *fUsage != "" {
		if err := config.PrintPluginConfig(*fUsage); err != nil {
			if err2 := config.PrintOutputConfig(*fUsage); err2 != nil {
				log.Fatalf("%s and %s", err, err2)
			}
		}
		return
	}

	var (
		c   *config.Config
		err error
	)

	if *fConfig != "" {
		c = config.NewConfig()
		c.OutputFilters = outputFilters
		c.PluginFilters = pluginFilters
		err = c.LoadConfig(*fConfig)
		if err != nil {
			log.Fatal(err)
		}
	} else {
		fmt.Println("Usage: Telegraf")
		flag.PrintDefaults()
		return
	}

	if *fConfigDirectory != "" {
		err = c.LoadDirectory(*fConfigDirectory)
		if err != nil {
			log.Fatal(err)
		}
	}
	if len(c.Outputs) == 0 {
		log.Fatalf("Error: no outputs found, did you provide a valid config file?")
	}
	if len(c.Plugins) == 0 {
		log.Fatalf("Error: no plugins found, did you provide a valid config file?")
	}

	ag, err := telegraf.NewAgent(c)
	if err != nil {
		log.Fatal(err)
	}

	if *fDebug {
		ag.Config.Agent.Debug = true
	}

	if *fTest {
		err = ag.Test()
		if err != nil {
			log.Fatal(err)
		}
		return
	}

	err = ag.Connect()
	if err != nil {
		log.Fatal(err)
	}

	shutdown := make(chan struct{})
	signals := make(chan os.Signal)
	signal.Notify(signals, os.Interrupt)
	go func() {
		<-signals
		close(shutdown)
	}()

	log.Printf("Starting Telegraf (version %s)\n", Version)
	log.Printf("Loaded outputs: %s", strings.Join(c.OutputNames(), " "))
	log.Printf("Loaded plugins: %s", strings.Join(c.PluginNames(), " "))
	log.Printf("Tags enabled: %s", c.ListTags())

	if *fPidfile != "" {
		f, err := os.Create(*fPidfile)
		if err != nil {
			log.Fatalf("Unable to create pidfile: %s", err)
		}

		fmt.Fprintf(f, "%d\n", os.Getpid())

		f.Close()
	}

	ag.Run(shutdown)
}