Golang graph.NewTagStore函数代码示例

func BuildContext(driver, root string) (*Context, error) {
	d, err := graphdriver.GetDriver(driver, root, nil, nil, nil)
	if err != nil {
		return nil, err
	}

	g, err := graph.NewGraph(filepath.Join(root, "graph"), d, nil, nil)
	if err != nil {
		return nil, err
	}

	config := &graph.TagStoreConfig{
		Graph:  g,
		Events: events.New(),
		Registry: registry.NewService(&registry.Options{
			Mirrors:            opts.NewListOpts(nil),
			InsecureRegistries: *opts.NewListOptsRef(&internalDockerEndpoints, nil),
		}),
	}
	store, err := graph.NewTagStore(filepath.Join(root, "repositories-"+d.String()), config)
	if err != nil {
		return nil, err
	}

	return NewContext(store, g, d), nil
}

// lookupImage ...
func (g *GraphTool) LookupImage(imageName string) (*image.Image, error) {
	tagCfg := &graph.TagStoreConfig{
		Graph: g.graphHandler,
	}
	tagStore, err := graph.NewTagStore(g.DockerRoot+"/repositories-"+g.graphDriver.String(), tagCfg)
	if err != nil {
		return nil, err
	}
	image, err := tagStore.LookupImage(imageName)
	if err != nil {
		return nil, err
	}
	return image, err
}

func initTagStoreAndConfig(c *cli.Context) (*graph.TagStore, *graph.TagStoreConfig, *graph.Graph, graphdriver.Driver) {
	g, d := initGraph(c)
	tsfile := filepath.Join(c.GlobalString("home"), "repositories-"+d.String())
	e := events.New()
	r := initRegistry()
	config := graph.TagStoreConfig{
		Events:   e,
		Graph:    g,
		Registry: r,
	}
	t, err := graph.NewTagStore(tsfile, &config)
	if err != nil {
		fmt.Printf("Failed to instantiate tag store: %s\n", err)
		os.Exit(1)
	}
	return t, &config, g, d
}

//.........这里部分代码省略.........
	}

	logrus.Debug("Creating images graph")
	g, err := graph.NewGraph(filepath.Join(config.Root, "graph"), d.driver)
	if err != nil {
		return nil, err
	}

	// Configure the volumes driver
	if err := configureVolumes(config); err != nil {
		return nil, err
	}

	trustKey, err := api.LoadOrCreateTrustKey(config.TrustKeyPath)
	if err != nil {
		return nil, err
	}

	trustDir := filepath.Join(config.Root, "trust")

	if err := system.MkdirAll(trustDir, 0700); err != nil {
		return nil, err
	}
	trustService, err := trust.NewTrustStore(trustDir)
	if err != nil {
		return nil, fmt.Errorf("could not create trust store: %s", err)
	}

	eventsService := events.New()
	logrus.Debug("Creating repository list")
	tagCfg := &graph.TagStoreConfig{
		Graph:    g,
		Key:      trustKey,
		Registry: registryService,
		Events:   eventsService,
		Trust:    trustService,
	}
	repositories, err := graph.NewTagStore(filepath.Join(config.Root, "repositories-"+d.driver.String()), tagCfg)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Tag store repositories-%s: %s", d.driver.String(), err)
	}

	d.netController, err = initNetworkController(config)
	if err != nil {
		return nil, fmt.Errorf("Error initializing network controller: %v", err)
	}

	graphdbPath := filepath.Join(config.Root, "linkgraph.db")
	graph, err := graphdb.NewSqliteConn(graphdbPath)
	if err != nil {
		return nil, err
	}

	d.containerGraph = graph

	var sysInitPath string
	if config.ExecDriver == "lxc" {
		initPath, err := configureSysInit(config)
		if err != nil {
			return nil, err
		}
		sysInitPath = initPath
	}

	sysInfo := sysinfo.New(false)
	// Check if Devices cgroup is mounted, it is hard requirement for container security,
	// on Linux/FreeBSD.
	if runtime.GOOS != "windows" && !sysInfo.CgroupDevicesEnabled {
		return nil, fmt.Errorf("Devices cgroup isn't mounted")
	}

	ed, err := execdrivers.NewDriver(config.ExecDriver, config.ExecOptions, config.ExecRoot, config.Root, sysInitPath, sysInfo)
	if err != nil {
		return nil, err
	}

	d.ID = trustKey.PublicKey().KeyID()
	d.repository = daemonRepo
	d.containers = &contStore{s: make(map[string]*Container)}
	d.execCommands = newExecStore()
	d.graph = g
	d.repositories = repositories
	d.idIndex = truncindex.NewTruncIndex([]string{})
	d.sysInfo = sysInfo
	d.config = config
	d.sysInitPath = sysInitPath
	d.execDriver = ed
	d.statsCollector = newStatsCollector(1 * time.Second)
	d.defaultLogConfig = config.LogConfig
	d.RegistryService = registryService
	d.EventsService = eventsService
	d.root = config.Root
	go d.execCommandGC()

	if err := d.restore(); err != nil {
		return nil, err
	}

	return d, nil
}

//.........这里部分代码省略.........
	daemonRepo := path.Join(config.Root, "containers")

	if err := os.MkdirAll(daemonRepo, 0700); err != nil && !os.IsExist(err) {
		return nil, err
	}

	// Migrate the container if it is aufs and aufs is enabled
	if err = migrateIfAufs(driver, config.Root); err != nil {
		return nil, err
	}

	log.Debugf("Creating images graph")
	g, err := graph.NewGraph(path.Join(config.Root, "graph"), driver)
	if err != nil {
		return nil, err
	}

	volumesDriver, err := graphdriver.GetDriver("vfs", config.Root, config.GraphOptions)
	if err != nil {
		return nil, err
	}

	volumes, err := volumes.NewRepository(path.Join(config.Root, "volumes"), volumesDriver)
	if err != nil {
		return nil, err
	}

	trustKey, err := api.LoadOrCreateTrustKey(config.TrustKeyPath)
	if err != nil {
		return nil, err
	}

	log.Debugf("Creating repository list")
	repositories, err := graph.NewTagStore(path.Join(config.Root, "repositories-"+driver.String()), g, trustKey)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Tag store: %s", err)
	}

	trustDir := path.Join(config.Root, "trust")
	if err := os.MkdirAll(trustDir, 0700); err != nil && !os.IsExist(err) {
		return nil, err
	}
	t, err := trust.NewTrustStore(trustDir)
	if err != nil {
		return nil, fmt.Errorf("could not create trust store: %s", err)
	}

	if !config.DisableNetwork {
		job := eng.Job("init_networkdriver")

		job.SetenvBool("EnableIptables", config.EnableIptables)
		job.SetenvBool("InterContainerCommunication", config.InterContainerCommunication)
		job.SetenvBool("EnableIpForward", config.EnableIpForward)
		job.SetenvBool("EnableIpMasq", config.EnableIpMasq)
		job.SetenvBool("EnableIPv6", config.EnableIPv6)
		job.Setenv("BridgeIface", config.BridgeIface)
		job.Setenv("BridgeIP", config.BridgeIP)
		job.Setenv("FixedCIDR", config.FixedCIDR)
		job.Setenv("FixedCIDRv6", config.FixedCIDRv6)
		job.Setenv("DefaultBindingIP", config.DefaultIp.String())

		if err := job.Run(); err != nil {
			return nil, err
		}
	}

func NewDaemonFromDirectory(config *daemonconfig.Config, eng *engine.Engine) (*Daemon, error) {
	if runtime.GOOS != "linux" {
		log.Fatalf("The Docker daemon is only supported on linux")
	}
	if os.Geteuid() != 0 {
		log.Fatalf("The Docker daemon needs to be run as root")
	}
	if err := checkKernelAndArch(); err != nil {
		log.Fatal(err)
	}

	// set up the TempDir to use a canonical path
	tmp, err := utils.TempDir(config.Root)
	if err != nil {
		log.Fatalf("Unable to get the TempDir under %s: %s", config.Root, err)
	}
	realTmp, err := utils.ReadSymlinkedDirectory(tmp)
	if err != nil {
		log.Fatalf("Unable to get the full path to the TempDir (%s): %s", tmp, err)
	}
	os.Setenv("TMPDIR", realTmp)
	if !config.EnableSelinuxSupport {
		selinuxSetDisabled()
	}

	// get the canonical path to the Docker root directory
	var realRoot string
	if _, err := os.Stat(config.Root); err != nil && os.IsNotExist(err) {
		realRoot = config.Root
	} else {
		realRoot, err = utils.ReadSymlinkedDirectory(config.Root)
		if err != nil {
			log.Fatalf("Unable to get the full path to root (%s): %s", config.Root, err)
		}
	}
	config.Root = realRoot
	// Create the root directory if it doesn't exists
	if err := os.MkdirAll(config.Root, 0700); err != nil && !os.IsExist(err) {
		return nil, err
	}

	// Set the default driver
	graphdriver.DefaultDriver = config.GraphDriver

	// Load storage driver
	driver, err := graphdriver.New(config.Root, config.GraphOptions)
	if err != nil {
		return nil, err
	}
	utils.Debugf("Using graph driver %s", driver)

	// As Docker on btrfs and SELinux are incompatible at present, error on both being enabled
	if config.EnableSelinuxSupport && driver.String() == "btrfs" {
		return nil, fmt.Errorf("SELinux is not supported with the BTRFS graph driver!")
	}

	daemonRepo := path.Join(config.Root, "containers")

	if err := os.MkdirAll(daemonRepo, 0700); err != nil && !os.IsExist(err) {
		return nil, err
	}

	// Migrate the container if it is aufs and aufs is enabled
	if err = migrateIfAufs(driver, config.Root); err != nil {
		return nil, err
	}

	utils.Debugf("Creating images graph")
	g, err := graph.NewGraph(path.Join(config.Root, "graph"), driver)
	if err != nil {
		return nil, err
	}

	// We don't want to use a complex driver like aufs or devmapper
	// for volumes, just a plain filesystem
	volumesDriver, err := graphdriver.GetDriver("vfs", config.Root, config.GraphOptions)
	if err != nil {
		return nil, err
	}
	utils.Debugf("Creating volumes graph")
	volumes, err := graph.NewGraph(path.Join(config.Root, "volumes"), volumesDriver)
	if err != nil {
		return nil, err
	}
	utils.Debugf("Creating repository list")
	repositories, err := graph.NewTagStore(path.Join(config.Root, "repositories-"+driver.String()), g)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Tag store: %s", err)
	}

	if !config.DisableNetwork {
		job := eng.Job("init_networkdriver")

		job.SetenvBool("EnableIptables", config.EnableIptables)
		job.SetenvBool("InterContainerCommunication", config.InterContainerCommunication)
		job.SetenvBool("EnableIpForward", config.EnableIpForward)
		job.Setenv("BridgeIface", config.BridgeIface)
		job.Setenv("BridgeIP", config.BridgeIP)
		job.Setenv("DefaultBindingIP", config.DefaultIp.String())

//.........这里部分代码省略.........

//.........这里部分代码省略.........
	if err != nil {
		return nil, err
	}

	volumesDriver, err := local.New(config.Root)
	if err != nil {
		return nil, err
	}
	volumedrivers.Register(volumesDriver, volumesDriver.Name())

	trustKey, err := api.LoadOrCreateTrustKey(config.TrustKeyPath)
	if err != nil {
		return nil, err
	}

	trustDir := path.Join(config.Root, "trust")
	if err := os.MkdirAll(trustDir, 0700); err != nil && !os.IsExist(err) {
		return nil, err
	}
	trustService, err := trust.NewTrustStore(trustDir)
	if err != nil {
		return nil, fmt.Errorf("could not create trust store: %s", err)
	}

	eventsService := events.New()
	logrus.Debug("Creating repository list")
	tagCfg := &graph.TagStoreConfig{
		Graph:    g,
		Key:      trustKey,
		Registry: registryService,
		Events:   eventsService,
		Trust:    trustService,
	}
	repositories, err := graph.NewTagStore(path.Join(config.Root, "repositories-"+d.driver.String()), tagCfg)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Tag store: %s", err)
	}

	if !config.DisableNetwork {
		d.netController, err = initNetworkController(config)
		if err != nil {
			return nil, fmt.Errorf("Error initializing network controller: %v", err)
		}
	}

	graphdbPath := path.Join(config.Root, "linkgraph.db")
	graph, err := graphdb.NewSqliteConn(graphdbPath)
	if err != nil {
		return nil, err
	}

	d.containerGraph = graph

	localCopy := path.Join(config.Root, "init", fmt.Sprintf("dockerinit-%s", dockerversion.VERSION))
	sysInitPath := utils.DockerInitPath(localCopy)
	if sysInitPath == "" {
		return nil, fmt.Errorf("Could not locate dockerinit: This usually means docker was built incorrectly. See https://docs.docker.com/contributing/devenvironment for official build instructions.")
	}

	if sysInitPath != localCopy {
		// When we find a suitable dockerinit binary (even if it's our local binary), we copy it into config.Root at localCopy for future use (so that the original can go away without that being a problem, for example during a package upgrade).
		if err := os.Mkdir(path.Dir(localCopy), 0700); err != nil && !os.IsExist(err) {
			return nil, err
		}
		if _, err := fileutils.CopyFile(sysInitPath, localCopy); err != nil {
			return nil, err

//.........这里部分代码省略.........
	}

	logrus.Debug("Creating images graph")
	g, err := graph.NewGraph(filepath.Join(config.Root, "graph"), d.driver, uidMaps, gidMaps)
	if err != nil {
		return nil, err
	}

	// Configure the volumes driver
	volStore, err := configureVolumes(config, rootUID, rootGID)
	if err != nil {
		return nil, err
	}

	trustKey, err := api.LoadOrCreateTrustKey(config.TrustKeyPath)
	if err != nil {
		return nil, err
	}

	trustDir := filepath.Join(config.Root, "trust")

	if err := system.MkdirAll(trustDir, 0700); err != nil {
		return nil, err
	}

	eventsService := events.New()
	logrus.Debug("Creating repository list")
	tagCfg := &graph.TagStoreConfig{
		Graph:    g,
		Key:      trustKey,
		Registry: registryService,
		Events:   eventsService,
	}
	repositories, err := graph.NewTagStore(filepath.Join(config.Root, "repositories-"+d.driver.String()), tagCfg)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Tag store repositories-%s: %s", d.driver.String(), err)
	}

	if restorer, ok := d.driver.(graphdriver.ImageRestorer); ok {
		if _, err := restorer.RestoreCustomImages(repositories, g); err != nil {
			return nil, fmt.Errorf("Couldn't restore custom images: %s", err)
		}
	}

	// Discovery is only enabled when the daemon is launched with an address to advertise.  When
	// initialized, the daemon is registered and we can store the discovery backend as its read-only
	// DiscoveryWatcher version.
	if config.ClusterStore != "" && config.ClusterAdvertise != "" {
		advertise, err := discovery.ParseAdvertise(config.ClusterStore, config.ClusterAdvertise)
		if err != nil {
			return nil, fmt.Errorf("discovery advertise parsing failed (%v)", err)
		}
		config.ClusterAdvertise = advertise
		d.discoveryWatcher, err = initDiscovery(config.ClusterStore, config.ClusterAdvertise, config.ClusterOpts)
		if err != nil {
			return nil, fmt.Errorf("discovery initialization failed (%v)", err)
		}
	} else if config.ClusterAdvertise != "" {
		return nil, fmt.Errorf("invalid cluster configuration. --cluster-advertise must be accompanied by --cluster-store configuration")
	}

	d.netController, err = d.initNetworkController(config)
	if err != nil {
		return nil, fmt.Errorf("Error initializing network controller: %v", err)
	}

func NewDaemon(config *Config, registryService *registry.Service) (daemon *Daemon, err error) {
	uidMaps, gidMaps, err := setupRemappedRoot(config)
	if err != nil {
		return nil, err
	}
	rootUID, rootGID, err := idtools.GetRootUIDGID(uidMaps, gidMaps)
	if err != nil {
		return nil, err
	}

	// get the canonical path to the Docker root directory
	var realRoot string
	if _, err := os.Stat(config.Root); err != nil && os.IsNotExist(err) {
		realRoot = config.Root
	} else {
		realRoot, err = fileutils.ReadSymlinkedDirectory(config.Root)
		if err != nil {
			return nil, fmt.Errorf("Unable to get the full path to root (%s): %s", config.Root, err)
		}
	}

	if err = setupDaemonRoot(config, realRoot, rootUID, rootGID); err != nil {
		return nil, err
	}

	// set up the tmpDir to use a canonical path
	tmp, err := tempDir(config.Root, rootUID, rootGID)
	if err != nil {
		return nil, fmt.Errorf("Unable to get the TempDir under %s: %s", config.Root, err)
	}
	realTmp, err := fileutils.ReadSymlinkedDirectory(tmp)
	if err != nil {
		return nil, fmt.Errorf("Unable to get the full path to the TempDir (%s): %s", tmp, err)
	}
	os.Setenv("TMPDIR", realTmp)

	// Load storage driver
	driver, err := graphdriver.New(config.Root, config.GraphOptions, uidMaps, gidMaps)
	if err != nil {
		return nil, fmt.Errorf("error initializing graphdriver: %v", err)
	}
	glog.V(1).Infof("Using graph driver %s", driver)

	d := &Daemon{}
	d.driver = driver

	defer func() {
		if err != nil {
			if err := d.Shutdown(); err != nil {
				glog.Error(err)
			}
		}
	}()

	daemonRepo := path.Join(config.Root, "containers")

	if err := os.MkdirAll(daemonRepo, 0700); err != nil && !os.IsExist(err) {
		glog.Error(err.Error())
		return nil, err
	}

	glog.Info("Creating images graph")
	g, err := graph.NewGraph(filepath.Join(config.Root, "graph"), d.driver, uidMaps, gidMaps)
	if err != nil {
		glog.Error(err.Error())
		return nil, err
	}

	// Configure the volumes driver
	volStore, err := configureVolumes(config, rootUID, rootGID)
	if err != nil {
		return nil, err
	}

	trustKey, err := api.LoadOrCreateTrustKey(config.TrustKeyPath)
	if err != nil {
		glog.Error(err.Error())
		return nil, err
	}

	trustDir := path.Join(config.Root, "trust")
	if err := os.MkdirAll(trustDir, 0700); err != nil && !os.IsExist(err) {
		glog.Error(err.Error())
		return nil, err
	}

	eventsService := events.New()
	glog.Info("Creating repository list")
	tagCfg := &graph.TagStoreConfig{
		Graph:    g,
		Key:      trustKey,
		Registry: registryService,
		Events:   eventsService,
	}
	repositories, err := graph.NewTagStore(path.Join(config.Root, "repositories-"+d.driver.String()), tagCfg)
	if err != nil {
		glog.Error(err.Error())
		return nil, fmt.Errorf("Couldn't create Tag store: %s", err)
	}

//.........这里部分代码省略.........