Exemplo n.º 1
0
func (cmd *GuardianCommand) wireVolumeCreator(logger lager.Logger, graphRoot string, insecureRegistries, persistentImages []string) gardener.VolumeCreator {
	if graphRoot == "" {
		return gardener.NoopVolumeCreator{}
	}

	if cmd.Bin.ImagePlugin.Path() != "" {
		defaultRootFS, err := url.Parse(cmd.Containers.DefaultRootFSDir.Path())
		if err != nil {
			logger.Fatal("failed-to-parse-default-rootfs", err)
		}
		return imageplugin.New(cmd.Bin.ImagePlugin.Path(), linux_command_runner.New(), defaultRootFS, idMappings)
	}

	logger = logger.Session("volume-creator", lager.Data{"graphRoot": graphRoot})
	runner := &logging.Runner{CommandRunner: linux_command_runner.New(), Logger: logger}

	if err := os.MkdirAll(graphRoot, 0755); err != nil {
		logger.Fatal("failed-to-create-graph-directory", err)
	}

	dockerGraphDriver, err := graphdriver.New(graphRoot, nil)
	if err != nil {
		logger.Fatal("failed-to-construct-graph-driver", err)
	}

	backingStoresPath := filepath.Join(graphRoot, "backing_stores")
	if err := os.MkdirAll(backingStoresPath, 0660); err != nil {
		logger.Fatal("failed-to-mkdir-backing-stores", err)
	}

	quotaedGraphDriver := &quotaed_aufs.QuotaedDriver{
		GraphDriver: dockerGraphDriver,
		Unmount:     quotaed_aufs.Unmount,
		BackingStoreMgr: &quotaed_aufs.BackingStore{
			RootPath: backingStoresPath,
			Logger:   logger.Session("backing-store-mgr"),
		},
		LoopMounter: &quotaed_aufs.Loop{
			Retrier: retrier.New(retrier.ConstantBackoff(200, 500*time.Millisecond), nil),
			Logger:  logger.Session("loop-mounter"),
		},
		Retrier:  retrier.New(retrier.ConstantBackoff(200, 500*time.Millisecond), nil),
		RootPath: graphRoot,
		Logger:   logger.Session("quotaed-driver"),
	}

	dockerGraph, err := graph.NewGraph(graphRoot, quotaedGraphDriver)
	if err != nil {
		logger.Fatal("failed-to-construct-graph", err)
	}

	var cake layercake.Cake = &layercake.Docker{
		Graph:  dockerGraph,
		Driver: quotaedGraphDriver,
	}

	if cake.DriverName() == "aufs" {
		cake = &layercake.AufsCake{
			Cake:      cake,
			Runner:    runner,
			GraphRoot: graphRoot,
		}
	}

	repoFetcher := repository_fetcher.Retryable{
		RepositoryFetcher: &repository_fetcher.CompositeFetcher{
			LocalFetcher: &repository_fetcher.Local{
				Cake:              cake,
				DefaultRootFSPath: cmd.Containers.DefaultRootFSDir.Path(),
				IDProvider:        repository_fetcher.LayerIDProvider{},
			},
			RemoteFetcher: repository_fetcher.NewRemote(
				logger,
				cmd.Docker.Registry,
				cake,
				distclient.NewDialer(insecureRegistries),
				repository_fetcher.VerifyFunc(repository_fetcher.Verify),
			),
		},
		Logger: logger,
	}

	rootFSNamespacer := &rootfs_provider.UidNamespacer{
		Translator: rootfs_provider.NewUidTranslator(
			idMappings, // uid
			idMappings, // gid
		),
	}

	retainer := cleaner.NewRetainer()
	ovenCleaner := cleaner.NewOvenCleaner(retainer,
		cleaner.NewThreshold(int64(cmd.Graph.CleanupThresholdInMegabytes)*1024*1024),
	)

	imageRetainer := &repository_fetcher.ImageRetainer{
		GraphRetainer:             retainer,
		DirectoryRootfsIDProvider: repository_fetcher.LayerIDProvider{},
		DockerImageIDFetcher:      repoFetcher,

		NamespaceCacheKey: rootFSNamespacer.CacheKey(),
		Logger:            logger,
	}

	// spawn off in a go function to avoid blocking startup
	// worst case is if an image is immediately created and deleted faster than
	// we can retain it we'll garbage collect it when we shouldn't. This
	// is an OK trade-off for not having garden startup block on dockerhub.
	go imageRetainer.Retain(persistentImages)

	layerCreator := rootfs_provider.NewLayerCreator(cake, rootfs_provider.SimpleVolumeCreator{}, rootFSNamespacer)

	quotaManager := &quota_manager.AUFSQuotaManager{
		BaseSizer: quota_manager.NewAUFSBaseSizer(cake),
		DiffSizer: &quota_manager.AUFSDiffSizer{
			AUFSDiffPathFinder: quotaedGraphDriver,
		},
	}

	return rootfs_provider.NewCakeOrdinator(cake,
		repoFetcher,
		layerCreator,
		rootfs_provider.NewMetricsAdapter(quotaManager.GetUsage, quotaedGraphDriver.GetMntPath),
		ovenCleaner)
}
Exemplo n.º 2
0
			specs.LinuxIDMapping{
				ContainerID: 0,
				HostID:      100,
				Size:        1,
			},
			specs.LinuxIDMapping{
				ContainerID: 1,
				HostID:      1,
				Size:        99,
			},
		}

		var err error
		defaultBaseImage, err = url.Parse("/default/image")
		Expect(err).ToNot(HaveOccurred())
		externalImageManager = imageplugin.New("/external-image-manager-bin", fakeCommandRunner, defaultBaseImage, idMappings)

		baseImage, err = url.Parse("/hello/image")
		Expect(err).ToNot(HaveOccurred())

		fakeCommandRunner.WhenRunning(fake_command_runner.CommandSpec{
			Path: "/external-image-manager-bin",
		}, func(cmd *exec.Cmd) error {
			if cmd.Stdout != nil {
				cmd.Stdout.Write([]byte(fakeCmdRunnerStdout))
			}
			if cmd.Stderr != nil {
				cmd.Stderr.Write([]byte(fakeCmdRunnerStderr))
			}

			return fakeCmdRunnerErr