Function main

cmd/tempo/main.go:47–117

()

}

func main() {
	printVersion := flag.Bool("version", false, "Print this builds version information")
	healthCheck := flag.Bool("health", false, "Run a health check against the /ready endpoint and exit")
	healthURL := flag.String("health.url", defaultHealthURL, "URL to check when running health check")
	mutexProfileFraction := flag.Int("mutex-profile-fraction", 0, "Override default mutex profiling fraction.")
	blockProfileThreshold := flag.Int("block-profile-threshold", 0, "Override default block profiling threshold.")

	config, configVerify, err := loadConfig()
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed parsing config: %v\n", err)
		os.Exit(1)
	}
	if *printVersion {
		fmt.Println(version.Print(appName))
		os.Exit(0)
	}
	if *healthCheck {
		os.Exit(RunHealthCheck(*healthURL))
	}

	// Init automemlimit if enabled
	app.InitAutoMemLimit(config)

	// Init the logger which will honor the log level set in config.Server
	if reflect.DeepEqual(&config.Server.LogLevel, &dslog.Level{}) {
		level.Error(log.Logger).Log("msg", "invalid log level")
		os.Exit(1)
	}
	log.InitLogger(&config.Server)

	// Verifying the config's validity and log warnings now that the logger is initialized
	isValid := configIsValid(config)

	// Exit if config.verify flag is true
	if configVerify {
		if !isValid {
			os.Exit(1)
		}
		os.Exit(0)
	}

	// Init tracer if OTEL_TRACES_EXPORTER, OTEL_EXPORTER_OTLP_ENDPOINT or OTEL_EXPORTER_OTLP_TRACES_ENDPOINT is set
	if os.Getenv("OTEL_TRACES_EXPORTER") != "" || os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT") != "" || os.Getenv("OTEL_EXPORTER_OTLP_TRACES_ENDPOINT") != "" {
		shutdownTracer, err := tracing.InstallOpenTelemetryTracer(appName, config.Target, config.SpanProfiling)
		if err != nil {
			level.Error(log.Logger).Log("msg", "error initialising tracer", "err", err)
			os.Exit(1)
		}
		defer shutdownTracer()
	}

	setMutexBlockProfiling(*mutexProfileFraction, *blockProfileThreshold)

	// Start Tempo
	t, err := app.New(*config)
	if err != nil {
		level.Error(log.Logger).Log("msg", "error initialising Tempo", "err", err)
		os.Exit(1)