package main import ( "crypto/tls" "crypto/x509" _ "expvar" "flag" "fmt" "io/ioutil" "net/http" _ "net/http/pprof" "os" "time" log "github.com/Sirupsen/logrus" "github.com/Sirupsen/logrus/formatters/logstash" "github.com/bugsnag/bugsnag-go" "github.com/docker/distribution/configuration" "github.com/docker/distribution/context" _ "github.com/docker/distribution/health" _ "github.com/docker/distribution/registry/auth/silly" _ "github.com/docker/distribution/registry/auth/token" "github.com/docker/distribution/registry/handlers" _ "github.com/docker/distribution/registry/storage/driver/azure" _ "github.com/docker/distribution/registry/storage/driver/filesystem" _ "github.com/docker/distribution/registry/storage/driver/inmemory" _ "github.com/docker/distribution/registry/storage/driver/middleware/cloudfront" _ "github.com/docker/distribution/registry/storage/driver/s3" "github.com/docker/distribution/version" gorhandlers "github.com/gorilla/handlers" "github.com/yvasiyarov/gorelic" ) var showVersion bool func init() { flag.BoolVar(&showVersion, "version", false, "show the version and exit") } func main() { flag.Usage = usage flag.Parse() if showVersion { version.PrintVersion() return } ctx := context.Background() ctx = context.WithValue(ctx, "version", version.Version) config, err := resolveConfiguration() if err != nil { fatalf("configuration error: %v", err) } ctx, err = configureLogging(ctx, config) if err != nil { fatalf("error configuring logger: %v", err) } app := handlers.NewApp(ctx, *config) handler := configureReporting(app) handler = gorhandlers.CombinedLoggingHandler(os.Stdout, handler) if config.HTTP.Debug.Addr != "" { go debugServer(config.HTTP.Debug.Addr) } if config.HTTP.TLS.Certificate == "" { context.GetLogger(app).Infof("listening on %v", config.HTTP.Addr) if err := http.ListenAndServe(config.HTTP.Addr, handler); err != nil { context.GetLogger(app).Fatalln(err) } } else { tlsConf := &tls.Config{ ClientAuth: tls.NoClientCert, } if len(config.HTTP.TLS.ClientCAs) != 0 { pool := x509.NewCertPool() for _, ca := range config.HTTP.TLS.ClientCAs { caPem, err := ioutil.ReadFile(ca) if err != nil { context.GetLogger(app).Fatalln(err) } if ok := pool.AppendCertsFromPEM(caPem); !ok { context.GetLogger(app).Fatalln(fmt.Errorf("Could not add CA to pool")) } } for _, subj := range pool.Subjects() { context.GetLogger(app).Debugf("CA Subject: %s", string(subj)) } tlsConf.ClientAuth = tls.RequireAndVerifyClientCert tlsConf.ClientCAs = pool } context.GetLogger(app).Infof("listening on %v, tls", config.HTTP.Addr) server := &http.Server{ Addr: config.HTTP.Addr, Handler: handler, TLSConfig: tlsConf, } if err := server.ListenAndServeTLS(config.HTTP.TLS.Certificate, config.HTTP.TLS.Key); err != nil { context.GetLogger(app).Fatalln(err) } } } func usage() { fmt.Fprintln(os.Stderr, "usage:", os.Args[0], "") flag.PrintDefaults() } func fatalf(format string, args ...interface{}) { fmt.Fprintf(os.Stderr, format+"\n", args...) usage() os.Exit(1) } func resolveConfiguration() (*configuration.Configuration, error) { var configurationPath string if flag.NArg() > 0 { configurationPath = flag.Arg(0) } else if os.Getenv("REGISTRY_CONFIGURATION_PATH") != "" { configurationPath = os.Getenv("REGISTRY_CONFIGURATION_PATH") } if configurationPath == "" { return nil, fmt.Errorf("configuration path unspecified") } fp, err := os.Open(configurationPath) if err != nil { return nil, err } config, err := configuration.Parse(fp) if err != nil { return nil, fmt.Errorf("error parsing %s: %v", configurationPath, err) } return config, nil } func configureReporting(app *handlers.App) http.Handler { var handler http.Handler = app if app.Config.Reporting.Bugsnag.APIKey != "" { bugsnagConfig := bugsnag.Configuration{ APIKey: app.Config.Reporting.Bugsnag.APIKey, // TODO(brianbland): provide the registry version here // AppVersion: "2.0", } if app.Config.Reporting.Bugsnag.ReleaseStage != "" { bugsnagConfig.ReleaseStage = app.Config.Reporting.Bugsnag.ReleaseStage } if app.Config.Reporting.Bugsnag.Endpoint != "" { bugsnagConfig.Endpoint = app.Config.Reporting.Bugsnag.Endpoint } bugsnag.Configure(bugsnagConfig) handler = bugsnag.Handler(handler) } if app.Config.Reporting.NewRelic.LicenseKey != "" { agent := gorelic.NewAgent() agent.NewrelicLicense = app.Config.Reporting.NewRelic.LicenseKey if app.Config.Reporting.NewRelic.Name != "" { agent.NewrelicName = app.Config.Reporting.NewRelic.Name } agent.CollectHTTPStat = true agent.Verbose = app.Config.Reporting.NewRelic.Verbose agent.Run() handler = agent.WrapHTTPHandler(handler) } return handler } // configureLogging prepares the context with a logger using the // configuration. func configureLogging(ctx context.Context, config *configuration.Configuration) (context.Context, error) { if config.Log.Level == "" && config.Log.Formatter == "" { // If no config for logging is set, fallback to deprecated "Loglevel". log.SetLevel(logLevel(config.Loglevel)) ctx = context.WithLogger(ctx, context.GetLogger(ctx, "version")) return ctx, nil } log.SetLevel(logLevel(config.Log.Level)) formatter := config.Log.Formatter if formatter == "" { formatter = "text" // default formatter } switch formatter { case "json": log.SetFormatter(&log.JSONFormatter{ TimestampFormat: time.RFC3339Nano, }) case "text": log.SetFormatter(&log.TextFormatter{ TimestampFormat: time.RFC3339Nano, }) case "logstash": log.SetFormatter(&logstash.LogstashFormatter{ TimestampFormat: time.RFC3339Nano, }) default: // just let the library use default on empty string. if config.Log.Formatter != "" { return ctx, fmt.Errorf("unsupported logging formatter: %q", config.Log.Formatter) } } if config.Log.Formatter != "" { log.Debugf("using %q logging formatter", config.Log.Formatter) } // log the application version with messages ctx = context.WithLogger(ctx, context.GetLogger(ctx, "version")) if len(config.Log.Fields) > 0 { // build up the static fields, if present. var fields []interface{} for k := range config.Log.Fields { fields = append(fields, k) } ctx = context.WithValues(ctx, config.Log.Fields) ctx = context.WithLogger(ctx, context.GetLogger(ctx, fields...)) } return ctx, nil } func logLevel(level configuration.Loglevel) log.Level { l, err := log.ParseLevel(string(level)) if err != nil { l = log.InfoLevel log.Warnf("error parsing level %q: %v, using %q ", level, err, l) } return l } // debugServer starts the debug server with pprof, expvar among other // endpoints. The addr should not be exposed externally. For most of these to // work, tls cannot be enabled on the endpoint, so it is generally separate. func debugServer(addr string) { log.Infof("debug server listening %v", addr) if err := http.ListenAndServe(addr, nil); err != nil { log.Fatalf("error listening on debug interface: %v", err) } }