func Run()

in proxy/cmd/cmd.go [85:183]
83 lines of code
15 McCabe index (conditional complexity)

func Run(flags *Flags, opts ...Option) {
	if len(flags.Ports) == 0 {
		panic("must specify a port")
	}

	var overrides options
	for _, o := range opts {
		o(&overrides)
	}

	var config Config
	if overrides.config != nil {
		config = *overrides.config
	} else {
		if err := configutil.Load(flags.ConfigFile, &config); err != nil {
			panic(err)
		}
		if flags.SecretsFile != "" {
			if err := configutil.Load(flags.SecretsFile, &config); err != nil {
				panic(err)
			}
		}
	}

	if overrides.logger != nil {
		log.SetGlobalLogger(overrides.logger.Sugar())
	} else {
		zlog := log.ConfigureLogger(config.ZapLogging)
		defer zlog.Sync()
	}

	stats := overrides.metrics
	if stats == nil {
		s, closer, err := metrics.New(config.Metrics, flags.KrakenCluster)
		if err != nil {
			log.Fatalf("Failed to init metrics: %s", err)
		}
		stats = s
		defer closer.Close()
	}

	go metrics.EmitVersion(stats)

	cas, err := store.NewCAStore(config.CAStore, stats)
	if err != nil {
		log.Fatalf("Failed to create store: %s", err)
	}

	tls, err := config.TLS.BuildClient()
	if err != nil {
		log.Fatalf("Error building client tls config: %s", err)
	}

	origins, err := config.Origin.Build(upstream.WithHealthCheck(healthcheck.Default(tls)))
	if err != nil {
		log.Fatalf("Error building origin host list: %s", err)
	}

	r := blobclient.NewClientResolver(blobclient.NewProvider(blobclient.WithTLS(tls)), origins)
	originCluster := blobclient.NewClusterClient(r)

	buildIndexes, err := config.BuildIndex.Build(upstream.WithHealthCheck(healthcheck.Default(tls)))
	if err != nil {
		log.Fatalf("Error building build-index host list: %s", err)
	}

	tagClient := tagclient.NewClusterClient(buildIndexes, tls)

	transferer := transfer.NewReadWriteTransferer(stats, tagClient, originCluster, cas)

	server := proxyserver.New(stats, config.Server, originCluster, tagClient)
	go func() {
		log.Fatalf("Error starting proxy server %s", server.ListenAndServe())
	}()

	registry, err := config.Registry.Build(config.Registry.ReadWriteParameters(transferer, cas, stats))
	if err != nil {
		log.Fatalf("Error creating registry: %s", err)
	}
	go func() {
		log.Info("Starting registry...")
		log.Fatal(registry.ListenAndServe())
	}()

	ros := registryoverride.NewServer(config.RegistryOverride, tagClient)
	go func() {
		log.Fatal(ros.ListenAndServe())
	}()

	log.Info("Starting nginx...")
	log.Fatal(nginx.Run(config.Nginx, map[string]interface{}{
		"ports": flags.Ports,
		"registry_server": nginx.GetServer(
			config.Registry.Docker.HTTP.Net, config.Registry.Docker.HTTP.Addr),
		"registry_override_server": nginx.GetServer(
			config.RegistryOverride.Listener.Net, config.RegistryOverride.Listener.Addr),
		"proxy_server": nginx.GetServer(config.Server.Listener.Net, config.Server.Listener.Addr)},
		nginx.WithTLS(config.TLS)))
}