Golang graphdriver.New函数代码示例

func mkTestTagStore(root string, t *testing.T) *TagStore {
	driver, err := graphdriver.New(root, nil)
	if err != nil {
		t.Fatal(err)
	}
	graph, err := NewGraph(root, driver)
	if err != nil {
		t.Fatal(err)
	}
	store, err := NewTagStore(path.Join(root, "tags"), graph)
	if err != nil {
		t.Fatal(err)
	}
	archive, err := fakeTar()
	if err != nil {
		t.Fatal(err)
	}
	img := &image.Image{ID: testImageID}
	// FIXME: this fails on Darwin with:
	// tags_unit_test.go:36: mkdir /var/folders/7g/b3ydb5gx4t94ndr_cljffbt80000gq/T/docker-test569b-tRunner-075013689/vfs/dir/foo/etc/postgres: permission denied
	if err := graph.Register(nil, archive, img); err != nil {
		t.Fatal(err)
	}
	if err := store.Set(testImageName, "", testImageID, false); err != nil {
		t.Fatal(err)
	}
	return store
}

func mkTestTagStore(root string, t *testing.T) *TagStore {
	driver, err := graphdriver.New(root, nil)
	if err != nil {
		t.Fatal(err)
	}
	graph, err := NewGraph(root, driver)
	if err != nil {
		t.Fatal(err)
	}
	store, err := NewTagStore(path.Join(root, "tags"), graph, nil)
	if err != nil {
		t.Fatal(err)
	}
	archive, err := fakeTar()
	if err != nil {
		t.Fatal(err)
	}
	img := &image.Image{ID: testImageID}
	if err := graph.Register(img, nil, archive); err != nil {
		t.Fatal(err)
	}
	if err := store.Set(testImageName, "", testImageID, false); err != nil {
		t.Fatal(err)
	}
	return store
}

func mkTestTagStore(root string, t *testing.T) *TagStore {
	driver, err := graphdriver.New(root, nil, nil, nil)
	if err != nil {
		t.Fatal(err)
	}
	graph, err := NewGraph(root, driver, nil, nil)
	if err != nil {
		t.Fatal(err)
	}
<<<<<<< HEAD

=======
>>>>>>> shakamunyi
	tagCfg := &TagStoreConfig{
		Graph:  graph,
		Events: events.New(),
	}
	store, err := NewTagStore(path.Join(root, "tags"), tagCfg)
	if err != nil {
		t.Fatal(err)
	}
	officialArchive, err := fakeTar()
	if err != nil {
		t.Fatal(err)
	}
	img := &image.Image{ID: testOfficialImageID}
	if err := graph.Register(v1Descriptor{img}, officialArchive); err != nil {

// initDriver ...
func (g *GraphTool) InitDriver() error {
	var err error
	g.graphDriver, err = graphdriver.New(g.DockerRoot, make([]string, 0))
	if err != nil {
		return err
	}
	g.graphHandler, err = graph.NewGraph(g.DockerRoot+"/graph", g.graphDriver)
	if err != nil {
		return err
	}
	return nil
}

func mkTestTagStore(root string, t *testing.T) *TagStore {
	driver, err := graphdriver.New(root, nil, nil, nil)
	if err != nil {
		t.Fatal(err)
	}
	graph, err := NewGraph(root, driver, nil, nil)
	if err != nil {
		t.Fatal(err)
	}

	trust, err := trust.NewStore(root + "/trust")
	if err != nil {
		t.Fatal(err)
	}

	tagCfg := &TagStoreConfig{
		Graph:  graph,
		Events: events.New(),
		Trust:  trust,
	}
	store, err := NewTagStore(path.Join(root, "tags"), tagCfg)
	if err != nil {
		t.Fatal(err)
	}
	officialArchive, err := fakeTar()
	if err != nil {
		t.Fatal(err)
	}
	img := &image.Image{ID: testOfficialImageID}
	if err := graph.Register(img, officialArchive); err != nil {
		t.Fatal(err)
	}
	if err := store.Tag(testOfficialImageName, "", testOfficialImageID, false); err != nil {
		t.Fatal(err)
	}
	privateArchive, err := fakeTar()
	if err != nil {
		t.Fatal(err)
	}
	img = &image.Image{ID: testPrivateImageID}
	if err := graph.Register(img, privateArchive); err != nil {
		t.Fatal(err)
	}
	if err := store.Tag(testPrivateImageName, "", testPrivateImageID, false); err != nil {
		t.Fatal(err)
	}
	if err := store.SetDigest(testPrivateImageName, testPrivateImageDigest, testPrivateImageID); err != nil {
		t.Fatal(err)
	}
	return store
}

func tempGraph(t *testing.T) (*graph.Graph, graphdriver.Driver) {
	tmp, err := ioutil.TempDir("", "docker-graph-")
	if err != nil {
		t.Fatal(err)
	}
	driver, err := graphdriver.New(tmp, nil)
	if err != nil {
		t.Fatal(err)
	}
	graph, err := graph.NewGraph(tmp, driver)
	if err != nil {
		t.Fatal(err)
	}
	return graph, driver
}

func initDriver(c *cli.Context) graphdriver.Driver {
	graphdriver.DefaultDriver = c.GlobalString("driver")
	if graphdriver.DefaultDriver == "" {
		fmt.Printf("No graphdriver specified.\n")
		os.Exit(1)
	}
	homedir := c.GlobalString("home")
	drv, err := graphdriver.New(homedir, c.GlobalStringSlice("storage-opt"), nil, nil)
	if err != nil {
		fmt.Printf("Failed to instantiate graphdriver: %s\n", err)
		os.Exit(1)
	}
	if c.GlobalBool("debug") {
		fmt.Fprintf(os.Stderr, "[DEBUG] Using driver %s.\n[DEBUG] %g\n[DEBUG] Home directory: %s\n", drv.String(), drv.Status(), homedir)
	}
	return drv
}

// NewStoreFromOptions creates a new Store instance
func NewStoreFromOptions(options StoreOptions) (Store, error) {
	driver, err := graphdriver.New(
		options.StorePath,
		options.GraphDriver,
		options.GraphDriverOptions,
		options.UIDMaps,
		options.GIDMaps)
	if err != nil {
		return nil, fmt.Errorf("error initializing graphdriver: %v", err)
	}
	logrus.Debugf("Using graph driver %s", driver)

	fms, err := NewFSMetadataStore(fmt.Sprintf(options.MetadataStorePathTemplate, driver))
	if err != nil {
		return nil, err
	}

	return NewStoreFromGraphDriver(fms, driver)
}

// NewStoreFromOptions creates a new Store instance
func NewStoreFromOptions(options StoreOptions) (Store, error) {
	driver, err := graphdriver.New(options.GraphDriver, options.PluginGetter, graphdriver.Options{
		Root:                options.StorePath,
		DriverOptions:       options.GraphDriverOptions,
		UIDMaps:             options.UIDMaps,
		GIDMaps:             options.GIDMaps,
		ExperimentalEnabled: options.ExperimentalEnabled,
	})
	if err != nil {
		return nil, fmt.Errorf("error initializing graphdriver: %v", err)
	}
	logrus.Debugf("Using graph driver %s", driver)

	fms, err := NewFSMetadataStore(fmt.Sprintf(options.MetadataStorePathTemplate, driver))
	if err != nil {
		return nil, err
	}

	return NewStoreFromGraphDriver(fms, driver)
}

func initGraph() (*graph.Graph, error) {
	graphdriver.Register("devicemapper", devmapper.Init)
	graphdriver.DefaultDriver = "devicemapper"

	// Load storage driver
	driver, err := graphdriver.New(root, graphOptions)
	if err != nil {
		log.Errorf("Load storage driver error: %v", err)
		return nil, err
	}
	log.Debugf("Using graph driver %s", driver)

	log.Debugf("Creating images graph")
	g, err := graph.NewGraph(path.Join(root, "graph"), driver)
	if err != nil {
		log.Errorf("Creating images graph error: %v", err)
		return nil, err
	}
	return g, nil
}

func mkTestTagStore(root string, t *testing.T) *TagStore {
	driver, err := graphdriver.New(root, nil)
	if err != nil {
		t.Fatal(err)
	}
	graph, err := NewGraph(root, driver)
	if err != nil {
		t.Fatal(err)
	}
	store, err := NewTagStore(path.Join(root, "tags"), graph, nil, nil, events.New())
	if err != nil {
		t.Fatal(err)
	}
	officialArchive, err := fakeTar()
	if err != nil {
		t.Fatal(err)
	}
	img := &image.Image{ID: testOfficialImageID}
	if err := graph.Register(img, officialArchive); err != nil {
		t.Fatal(err)
	}
	if err := store.Set(testOfficialImageName, "", testOfficialImageID, false); err != nil {
		t.Fatal(err)
	}
	privateArchive, err := fakeTar()
	if err != nil {
		t.Fatal(err)
	}
	img = &image.Image{ID: testPrivateImageID}
	if err := graph.Register(img, privateArchive); err != nil {
		t.Fatal(err)
	}
	if err := store.Set(testPrivateImageName, "", testPrivateImageID, false); err != nil {
		t.Fatal(err)
	}
	if err := store.SetDigest(testPrivateImageName, testPrivateImageDigest, testPrivateImageID); err != nil {
		t.Fatal(err)
	}
	return store
}

func selectGraphDriver(logger lager.Logger, name string, graphRoot string) (graphdriver.Driver, error) {
	// silence docker graph debug logging; we'll do our own warning for non-aufs
	// driver selection
	logrus.SetLevel(logrus.WarnLevel)

	var driver graphdriver.Driver
	var err error
	if name == "auto" {
		driver, err = graphdriver.New(graphRoot, nil)
	} else {
		driver, err = graphdriver.GetDriver(name, graphRoot, nil)
	}
	if err != nil {
		return nil, err
	}

	driverName := driver.String()

	if driverName != "aufs" {
		logger.Info("unsupported-graph-driver", lager.Data{"name": driverName})
	}

	return driver, nil
}

func NewDaemonFromDirectory(config *Config, eng *engine.Engine) (*Daemon, error) {
	if config.Mtu == 0 {
		config.Mtu = getDefaultNetworkMtu()
	}
	// Check for mutually incompatible config options
	if config.BridgeIface != "" && config.BridgeIP != "" {
		return nil, fmt.Errorf("You specified -b & --bip, mutually exclusive options. Please specify only one.")
	}
	if !config.EnableIptables && !config.InterContainerCommunication {
		return nil, fmt.Errorf("You specified --iptables=false with --icc=false. ICC uses iptables to function. Please set --icc or --iptables to true.")
	}
	if !config.EnableIptables && config.EnableIpMasq {
		config.EnableIpMasq = false
	}
	config.DisableNetwork = config.BridgeIface == disableNetworkBridge

	// Claim the pidfile first, to avoid any and all unexpected race conditions.
	// Some of the init doesn't need a pidfile lock - but let's not try to be smart.
	if config.Pidfile != "" {
		if err := utils.CreatePidFile(config.Pidfile); err != nil {
			return nil, err
		}
		eng.OnShutdown(func() {
			// Always release the pidfile last, just in case
			utils.RemovePidFile(config.Pidfile)
		})
	}

	// Check that the system is supported and we have sufficient privileges
	if runtime.GOOS != "linux" {
		return nil, fmt.Errorf("The Docker daemon is only supported on linux")
	}
	if os.Geteuid() != 0 {
		return nil, fmt.Errorf("The Docker daemon needs to be run as root")
	}
	if err := checkKernelAndArch(); err != nil {
		return nil, err
	}

	// set up the TempDir to use a canonical path
	tmp, err := utils.TempDir(config.Root)
	if err != nil {
		return nil, fmt.Errorf("Unable to get the TempDir under %s: %s", config.Root, err)
	}
	realTmp, err := utils.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)
	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 {
			return nil, fmt.Errorf("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
	}
	log.Debugf("Using graph driver %s", driver)

	// As Docker on btrfs and SELinux are incompatible at present, error on both being enabled
	if selinuxEnabled() && 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
	}

	log.Debugf("Creating images graph")
	g, err := graph.NewGraph(path.Join(config.Root, "graph"), driver)
	if err != nil {
		return nil, err
	}
//.........这里部分代码省略.........

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.........

func NewDaemon(config *Config, registryService *registry.Service) (daemon *Daemon, err error) {
	// Check for mutually incompatible config options
	if config.Bridge.Iface != "" && config.Bridge.IP != "" {
		return nil, fmt.Errorf("You specified -b & --bip, mutually exclusive options. Please specify only one.")
	}
	setDefaultMtu(config)

	if !config.Bridge.EnableIPTables && !config.Bridge.InterContainerCommunication {
		return nil, fmt.Errorf("You specified --iptables=false with --icc=false. ICC uses iptables to function. Please set --icc or --iptables to true.")
	}
	if !config.Bridge.EnableIPTables && config.Bridge.EnableIPMasq {
		config.Bridge.EnableIPMasq = false
	}
	config.DisableNetwork = config.Bridge.Iface == disableNetworkBridge

	// Check that the system is supported and we have sufficient privileges
	if runtime.GOOS != "linux" {
		return nil, fmt.Errorf("The Docker daemon is only supported on linux")
	}
	if os.Geteuid() != 0 {
		return nil, fmt.Errorf("The Docker daemon needs to be run as root")
	}
	if err := checkKernel(); err != nil {
		return nil, err
	}

	// set up SIGUSR1 handler to dump Go routine stacks
	setupSigusr1Trap()

	// set up the tmpDir to use a canonical path
	tmp, err := tempDir(config.Root)
	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)

	// 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)
		}
	}
	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, fmt.Errorf("error initializing graphdriver: %v", err)
	}
	logrus.Debugf("Using graph driver %s", driver)

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

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

	// Verify logging driver type
	if config.LogConfig.Type != "none" {
		if _, err := logger.GetLogDriver(config.LogConfig.Type); err != nil {
			return nil, fmt.Errorf("error finding the logging driver: %v", err)
		}
	}
	logrus.Debugf("Using default logging driver %s", config.LogConfig.Type)

	if config.EnableSelinuxSupport {
		if selinuxEnabled() {
			// As Docker on btrfs and SELinux are incompatible at present, error on both being enabled
			if d.driver.String() == "btrfs" {
				return nil, fmt.Errorf("SELinux is not supported with the BTRFS graph driver")
			}
			logrus.Debug("SELinux enabled successfully")
		} else {
			logrus.Warn("Docker could not enable SELinux on the host system")
		}
	} else {
		selinuxSetDisabled()
	}

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