Golang utils.IsDebugEnabled函数代码示例

func initRouter(s *apiserver.Server, d *daemon.Daemon, c *cluster.Cluster) {
	decoder := runconfig.ContainerDecoder{}

	routers := []router.Router{
		// we need to add the checkpoint router before the container router or the DELETE gets masked
		checkpointrouter.NewRouter(d, decoder),
		container.NewRouter(d, decoder),
		image.NewRouter(d, decoder),
		systemrouter.NewRouter(d, c),
		volume.NewRouter(d),
		build.NewRouter(dockerfile.NewBuildManager(d)),
		swarmrouter.NewRouter(c),
		pluginrouter.NewRouter(plugin.GetManager()),
	}

	if d.NetworkControllerEnabled() {
		routers = append(routers, network.NewRouter(d, c))
	}

	if d.HasExperimental() {
		for _, r := range routers {
			for _, route := range r.Routes() {
				if experimental, ok := route.(router.ExperimentalRoute); ok {
					experimental.Enable()
				}
			}
		}
	}

	s.InitRouter(utils.IsDebugEnabled(), routers...)
}

func (cli *DaemonCli) reloadConfig() {
	reload := func(config *daemon.Config) {

		// Reload the authorization plugin
		cli.authzMiddleware.SetPlugins(config.AuthorizationPlugins)

		if err := cli.d.Reload(config); err != nil {
			logrus.Errorf("Error reconfiguring the daemon: %v", err)
			return
		}

		if config.IsValueSet("debug") {
			debugEnabled := utils.IsDebugEnabled()
			switch {
			case debugEnabled && !config.Debug: // disable debug
				utils.DisableDebug()
				cli.api.DisableProfiler()
			case config.Debug && !debugEnabled: // enable debug
				utils.EnableDebug()
				cli.api.EnableProfiler()
			}

		}
	}

	if err := daemon.ReloadConfiguration(*cli.configFile, cli.flags, reload); err != nil {
		logrus.Error(err)
	}
}

func initRouter(s *apiserver.Server, d *daemon.Daemon) {
	s.InitRouter(utils.IsDebugEnabled(),
		container.NewRouter(d),
		image.NewRouter(d),
		network.NewRouter(d),
		systemrouter.NewRouter(d),
		volume.NewRouter(d),
		build.NewRouter(dockerfile.NewBuildManager(d)))
}

// Reload reads configuration changes and modifies the
// server according to those changes.
// Currently, only the --debug configuration is taken into account.
func (s *Server) Reload(config *daemon.Config) {
	debugEnabled := utils.IsDebugEnabled()
	switch {
	case debugEnabled && !config.Debug: // disable debug
		utils.DisableDebug()
		s.routerSwapper.Swap(s.createMux())
	case config.Debug && !debugEnabled: // enable debug
		utils.EnableDebug()
		s.routerSwapper.Swap(s.createMux())
	}
}

// Reload reads configuration changes and modifies the
// server according to those changes.
// Currently, only the --debug configuration is taken into account.
func (s *Server) Reload(debug bool) {
	debugEnabled := utils.IsDebugEnabled()
	switch {
	case debugEnabled && !debug: // disable debug
		utils.DisableDebug()
		s.routerSwapper.Swap(s.createMux())
	case debug && !debugEnabled: // enable debug
		utils.EnableDebug()
		s.routerSwapper.Swap(s.createMux())
	}
}

func initRouter(s *apiserver.Server, d *daemon.Daemon) {
	routers := []router.Router{
		container.NewRouter(d),
		image.NewRouter(d),
		systemrouter.NewRouter(d),
		volume.NewRouter(d),
		build.NewRouter(dockerfile.NewBuildManager(d)),
	}
	if d.NetworkControllerEnabled() {
		routers = append(routers, network.NewRouter(d))
	}

	s.InitRouter(utils.IsDebugEnabled(), routers...)
}

func initRouter(s *apiserver.Server, d *daemon.Daemon) {
	decoder := runconfig.ContainerDecoder{}

	routers := []router.Router{
		container.NewRouter(d, decoder),
		image.NewRouter(d, decoder),
		systemrouter.NewRouter(d),
		volume.NewRouter(d),
		build.NewRouter(d),
	}
	if d.NetworkControllerEnabled() {
		routers = append(routers, network.NewRouter(d))
	}

	s.InitRouter(utils.IsDebugEnabled(), routers...)
}

func initRouter(s *apiserver.Server, d *daemon.Daemon, c *cluster.Cluster) {
	decoder := runconfig.ContainerDecoder{}

	routers := []router.Router{
		container.NewRouter(d, decoder),
		image.NewRouter(d, decoder),
		systemrouter.NewRouter(d, c),
		volume.NewRouter(d),
		build.NewRouter(dockerfile.NewBuildManager(d)),
		swarmrouter.NewRouter(c),
	}
	if d.NetworkControllerEnabled() {
		routers = append(routers, network.NewRouter(d, c))
	}
	routers = addExperimentalRouters(routers)

	s.InitRouter(utils.IsDebugEnabled(), routers...)
}

// createMux initializes the main router the server uses.
func (s *Server) createMux() *mux.Router {
	m := mux.NewRouter()
	if utils.IsDebugEnabled() {
		profilerSetup(m, "/debug/")
	}

	logrus.Debugf("Registering routers")
	for _, apiRouter := range s.routers {
		for _, r := range apiRouter.Routes() {
			f := s.makeHTTPHandler(r.Handler())

			logrus.Debugf("Registering %s, %s", r.Method(), r.Path())
			m.Path(versionMatcher + r.Path()).Methods(r.Method()).Handler(f)
			m.Path(r.Path()).Methods(r.Method()).Handler(f)
		}
	}

	return m
}

func initRouter(s *apiserver.Server, d *daemon.Daemon, c *cluster.Cluster) {
	decoder := runconfig.ContainerDecoder{}

	routers := []router.Router{}

	// we need to add the checkpoint router before the container router or the DELETE gets masked
	routers = addExperimentalRouters(routers, d, decoder)

	routers = append(routers, []router.Router{
		container.NewRouter(d, decoder),
		image.NewRouter(d, decoder),
		systemrouter.NewRouter(d, c),
		volume.NewRouter(d),
		build.NewRouter(dockerfile.NewBuildManager(d)),
		swarmrouter.NewRouter(c),
	}...)

	if d.NetworkControllerEnabled() {
		routers = append(routers, network.NewRouter(d, c))
	}

	s.InitRouter(utils.IsDebugEnabled(), routers...)
}

func (cli *DaemonCli) reloadConfig() {
	reload := func(config *daemon.Config) {
		if err := cli.d.Reload(config); err != nil {
			logrus.Errorf("Error reconfiguring the daemon: %v", err)
			return
		}
		if config.IsValueSet("debug") {
			debugEnabled := utils.IsDebugEnabled()
			switch {
			case debugEnabled && !config.Debug: // disable debug
				utils.DisableDebug()
				cli.api.DisableProfiler()
			case config.Debug && !debugEnabled: // enable debug
				utils.EnableDebug()
				cli.api.EnableProfiler()
			}

		}
	}

	if err := daemon.ReloadConfiguration(*cli.configFile, flag.CommandLine, reload); err != nil {
		logrus.Error(err)
	}
}

func (daemon *Daemon) restore() error {
	var (
		debug         = utils.IsDebugEnabled()
		currentDriver = daemon.GraphDriverName()
		containers    = make(map[string]*container.Container)
	)

	if !debug {
		logrus.Info("Loading containers: start.")
	}
	dir, err := ioutil.ReadDir(daemon.repository)
	if err != nil {
		return err
	}

	containerCount := 0
	for _, v := range dir {
		id := v.Name()
		container, err := daemon.load(id)
		if !debug && logrus.GetLevel() == logrus.InfoLevel {
			fmt.Print(".")
			containerCount++
		}
		if err != nil {
			logrus.Errorf("Failed to load container %v: %v", id, err)
			continue
		}

		// Ignore the container if it does not support the current driver being used by the graph
		if (container.Driver == "" && currentDriver == "aufs") || container.Driver == currentDriver {
			rwlayer, err := daemon.layerStore.GetRWLayer(container.ID)
			if err != nil {
				logrus.Errorf("Failed to load container mount %v: %v", id, err)
				continue
			}
			container.RWLayer = rwlayer
			logrus.Debugf("Loaded container %v", container.ID)

			containers[container.ID] = container
		} else {
			logrus.Debugf("Cannot load container %s because it was created with another graph driver.", container.ID)
		}
	}

	var migrateLegacyLinks bool
	restartContainers := make(map[*container.Container]chan struct{})
	activeSandboxes := make(map[string]interface{})
	for _, c := range containers {
		if err := daemon.registerName(c); err != nil {
			logrus.Errorf("Failed to register container %s: %s", c.ID, err)
			continue
		}
		if err := daemon.Register(c); err != nil {
			logrus.Errorf("Failed to register container %s: %s", c.ID, err)
			continue
		}

		// The LogConfig.Type is empty if the container was created before docker 1.12 with default log driver.
		// We should rewrite it to use the daemon defaults.
		// Fixes https://github.com/docker/docker/issues/22536
		if c.HostConfig.LogConfig.Type == "" {
			if err := daemon.mergeAndVerifyLogConfig(&c.HostConfig.LogConfig); err != nil {
				logrus.Errorf("Failed to verify log config for container %s: %q", c.ID, err)
				continue
			}
		}
	}
	var wg sync.WaitGroup
	var mapLock sync.Mutex
	for _, c := range containers {
		wg.Add(1)
		go func(c *container.Container) {
			defer wg.Done()
			rm := c.RestartManager(false)
			if c.IsRunning() || c.IsPaused() {
				if err := daemon.containerd.Restore(c.ID, libcontainerd.WithRestartManager(rm)); err != nil {
					logrus.Errorf("Failed to restore %s with containerd: %s", c.ID, err)
					return
				}
				if !c.HostConfig.NetworkMode.IsContainer() && c.IsRunning() {
					options, err := daemon.buildSandboxOptions(c)
					if err != nil {
						logrus.Warnf("Failed build sandbox option to restore container %s: %v", c.ID, err)
					}
					mapLock.Lock()
					activeSandboxes[c.NetworkSettings.SandboxID] = options
					mapLock.Unlock()
				}

			}
			// fixme: only if not running
			// get list of containers we need to restart
			if daemon.configStore.AutoRestart && !c.IsRunning() && !c.IsPaused() && c.ShouldRestart() {
				mapLock.Lock()
				restartContainers[c] = make(chan struct{})
				mapLock.Unlock()
			}

			if c.RemovalInProgress {
				// We probably crashed in the middle of a removal, reset
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		if err != nil {
			logrus.Fatal(err)
		}
		// If we're binding to a TCP port, make sure that a container doesn't try to use it.
		if proto == "tcp" {
			if err := allocateDaemonPort(addr); err != nil {
				logrus.Fatal(err)
			}
		}
		logrus.Debugf("Listener created for HTTP on %s (%s)", protoAddrParts[0], protoAddrParts[1])
		api.Accept(protoAddrParts[1], l...)
	}

	if err := migrateKey(); err != nil {
		logrus.Fatal(err)
	}
	cli.TrustKeyPath = cli.commonFlags.TrustKey

	registryService := registry.NewService(cli.Config.ServiceOptions)
	containerdRemote, err := libcontainerd.New(cli.getLibcontainerdRoot(), cli.getPlatformRemoteOptions()...)
	if err != nil {
		logrus.Fatal(err)
	}

	d, err := daemon.NewDaemon(cli.Config, registryService, containerdRemote)
	if err != nil {
		if pfile != nil {
			if err := pfile.Remove(); err != nil {
				logrus.Error(err)
			}
		}
		logrus.Fatalf("Error starting daemon: %v", err)
	}

	logrus.Info("Daemon has completed initialization")

	logrus.WithFields(logrus.Fields{
		"version":     dockerversion.Version,
		"commit":      dockerversion.GitCommit,
		"graphdriver": d.GraphDriverName(),
	}).Info("Docker daemon")

	cli.initMiddlewares(api, serverConfig)
	initRouter(api, d)

	reload := func(config *daemon.Config) {
		if err := d.Reload(config); err != nil {
			logrus.Errorf("Error reconfiguring the daemon: %v", err)
			return
		}
		if config.IsValueSet("debug") {
			debugEnabled := utils.IsDebugEnabled()
			switch {
			case debugEnabled && !config.Debug: // disable debug
				utils.DisableDebug()
				api.DisableProfiler()
			case config.Debug && !debugEnabled: // enable debug
				utils.EnableDebug()
				api.EnableProfiler()
			}

		}
	}

	setupConfigReloadTrap(*cli.configFile, flags, reload)

	// The serve API routine never exits unless an error occurs
	// We need to start it as a goroutine and wait on it so
	// daemon doesn't exit
	serveAPIWait := make(chan error)
	go api.Wait(serveAPIWait)

	signal.Trap(func() {
		api.Close()
		<-serveAPIWait
		shutdownDaemon(d, 15)
		if pfile != nil {
			if err := pfile.Remove(); err != nil {
				logrus.Error(err)
			}
		}
	})

	// after the daemon is done setting up we can notify systemd api
	notifySystem()

	// Daemon is fully initialized and handling API traffic
	// Wait for serve API to complete
	errAPI := <-serveAPIWait
	shutdownDaemon(d, 15)
	containerdRemote.Cleanup()
	if errAPI != nil {
		if pfile != nil {
			if err := pfile.Remove(); err != nil {
				logrus.Error(err)
			}
		}
		logrus.Fatalf("Shutting down due to ServeAPI error: %v", errAPI)
	}
}

// SystemInfo returns information about the host server the daemon is running on.
func (daemon *Daemon) SystemInfo() (*types.Info, error) {
	kernelVersion := "<unknown>"
	if kv, err := kernel.GetKernelVersion(); err == nil {
		kernelVersion = kv.String()
	}

	operatingSystem := "<unknown>"
	if s, err := operatingsystem.GetOperatingSystem(); err == nil {
		operatingSystem = s
	}

	// Don't do containerized check on Windows
	if runtime.GOOS != "windows" {
		if inContainer, err := operatingsystem.IsContainerized(); err != nil {
			logrus.Errorf("Could not determine if daemon is containerized: %v", err)
			operatingSystem += " (error determining if containerized)"
		} else if inContainer {
			operatingSystem += " (containerized)"
		}
	}

	meminfo, err := system.ReadMemInfo()
	if err != nil {
		logrus.Errorf("Could not read system memory info: %v", err)
	}

	// if we still have the original dockerinit binary from before
	// we copied it locally, let's return the path to that, since
	// that's more intuitive (the copied path is trivial to derive
	// by hand given VERSION)
	initPath := utils.DockerInitPath("")
	sysInfo := sysinfo.New(true)

	var cRunning, cPaused, cStopped int
	for _, c := range daemon.List() {
		switch c.StateString() {
		case "paused":
			cPaused++
		case "running":
			cRunning++
		default:
			cStopped++
		}
	}

	v := &types.Info{
		ID:                 daemon.ID,
		Containers:         len(daemon.List()),
		ContainersRunning:  cRunning,
		ContainersPaused:   cPaused,
		ContainersStopped:  cStopped,
		Images:             len(daemon.imageStore.Map()),
		Driver:             daemon.GraphDriverName(),
		DriverStatus:       daemon.layerStore.DriverStatus(),
		Plugins:            daemon.showPluginsInfo(),
		IPv4Forwarding:     !sysInfo.IPv4ForwardingDisabled,
		BridgeNfIptables:   !sysInfo.BridgeNfCallIptablesDisabled,
		BridgeNfIP6tables:  !sysInfo.BridgeNfCallIP6tablesDisabled,
		Debug:              utils.IsDebugEnabled(),
		NFd:                fileutils.GetTotalUsedFds(),
		NGoroutines:        runtime.NumGoroutine(),
		SystemTime:         time.Now().Format(time.RFC3339Nano),
		ExecutionDriver:    daemon.ExecutionDriver().Name(),
		LoggingDriver:      daemon.defaultLogConfig.Type,
		NEventsListener:    daemon.EventsService.SubscribersCount(),
		KernelVersion:      kernelVersion,
		OperatingSystem:    operatingSystem,
		IndexServerAddress: registry.IndexServer,
		OSType:             platform.OSType,
		Architecture:       platform.Architecture,
		RegistryConfig:     daemon.RegistryService.Config,
		InitSha1:           dockerversion.InitSHA1,
		InitPath:           initPath,
		NCPU:               runtime.NumCPU(),
		MemTotal:           meminfo.MemTotal,
		DockerRootDir:      daemon.configStore.Root,
		Labels:             daemon.configStore.Labels,
		ExperimentalBuild:  utils.ExperimentalBuild(),
		ServerVersion:      dockerversion.Version,
		ClusterStore:       daemon.configStore.ClusterStore,
		ClusterAdvertise:   daemon.configStore.ClusterAdvertise,
		HTTPProxy:          getProxyEnv("http_proxy"),
		HTTPSProxy:         getProxyEnv("https_proxy"),
		NoProxy:            getProxyEnv("no_proxy"),
	}

	// TODO Windows. Refactor this more once sysinfo is refactored into
	// platform specific code. On Windows, sysinfo.cgroupMemInfo and
	// sysinfo.cgroupCpuInfo will be nil otherwise and cause a SIGSEGV if
	// an attempt is made to access through them.
	if runtime.GOOS != "windows" {
		v.MemoryLimit = sysInfo.MemoryLimit
		v.SwapLimit = sysInfo.SwapLimit
		v.OomKillDisable = sysInfo.OomKillDisable
		v.CPUCfsPeriod = sysInfo.CPUCfsPeriod
		v.CPUCfsQuota = sysInfo.CPUCfsQuota
		v.CPUShares = sysInfo.CPUShares
		v.CPUSet = sysInfo.Cpuset
	}
//.........这里部分代码省略.........

func (daemon *Daemon) restore() error {
	var (
		debug         = utils.IsDebugEnabled()
		currentDriver = daemon.GraphDriverName()
		containers    = make(map[string]*container.Container)
	)

	if !debug {
		logrus.Info("Loading containers: start.")
	}
	dir, err := ioutil.ReadDir(daemon.repository)
	if err != nil {
		return err
	}

	for _, v := range dir {
		id := v.Name()
		container, err := daemon.load(id)
		if !debug && logrus.GetLevel() == logrus.InfoLevel {
			fmt.Print(".")
		}
		if err != nil {
			logrus.Errorf("Failed to load container %v: %v", id, err)
			continue
		}

		// Ignore the container if it does not support the current driver being used by the graph
		if (container.Driver == "" && currentDriver == "aufs") || container.Driver == currentDriver {
			rwlayer, err := daemon.layerStore.GetRWLayer(container.ID)
			if err != nil {
				logrus.Errorf("Failed to load container mount %v: %v", id, err)
				continue
			}
			container.RWLayer = rwlayer
			logrus.Debugf("Loaded container %v", container.ID)

			containers[container.ID] = container
		} else {
			logrus.Debugf("Cannot load container %s because it was created with another graph driver.", container.ID)
		}
	}

	var migrateLegacyLinks bool
	restartContainers := make(map[*container.Container]chan struct{})
	for _, c := range containers {
		if err := daemon.registerName(c); err != nil {
			logrus.Errorf("Failed to register container %s: %s", c.ID, err)
			continue
		}
		if err := daemon.Register(c); err != nil {
			logrus.Errorf("Failed to register container %s: %s", c.ID, err)
			continue
		}
	}
	var wg sync.WaitGroup
	var mapLock sync.Mutex
	for _, c := range containers {
		wg.Add(1)
		go func(c *container.Container) {
			defer wg.Done()
			rm := c.RestartManager(false)
			if c.IsRunning() || c.IsPaused() {
				// Fix activityCount such that graph mounts can be unmounted later
				if err := daemon.layerStore.ReinitRWLayer(c.RWLayer); err != nil {
					logrus.Errorf("Failed to ReinitRWLayer for %s due to %s", c.ID, err)
					return
				}
				if err := daemon.containerd.Restore(c.ID, libcontainerd.WithRestartManager(rm)); err != nil {
					logrus.Errorf("Failed to restore with containerd: %q", err)
					return
				}
			}
			// fixme: only if not running
			// get list of containers we need to restart
			if daemon.configStore.AutoRestart && !c.IsRunning() && !c.IsPaused() && c.ShouldRestart() {
				mapLock.Lock()
				restartContainers[c] = make(chan struct{})
				mapLock.Unlock()
			}

			// if c.hostConfig.Links is nil (not just empty), then it is using the old sqlite links and needs to be migrated
			if c.HostConfig != nil && c.HostConfig.Links == nil {
				migrateLegacyLinks = true
			}
		}(c)
	}
	wg.Wait()

	// migrate any legacy links from sqlite
	linkdbFile := filepath.Join(daemon.root, "linkgraph.db")
	var legacyLinkDB *graphdb.Database
	if migrateLegacyLinks {
		legacyLinkDB, err = graphdb.NewSqliteConn(linkdbFile)
		if err != nil {
			return fmt.Errorf("error connecting to legacy link graph DB %s, container links may be lost: %v", linkdbFile, err)
		}
		defer legacyLinkDB.Close()
	}

	// Now that all the containers are registered, register the links
//.........这里部分代码省略.........