Golang ContainerSpec.Handle方法代碼示例

func (p *LinuxResourcePool) Acquire(spec garden.ContainerSpec) (linux_backend.LinuxContainerSpec, error) {
	id := <-p.containerIDs
	containerPath := path.Join(p.depotPath, id)
	pLog := p.logger.Session(id)

	pLog.Info("creating")

	resources, err := p.acquirePoolResources(spec, id)
	if err != nil {
		return linux_backend.LinuxContainerSpec{}, err
	}
	defer cleanup(&err, func() {
		p.releasePoolResources(resources)
	})

	pLog.Info("acquired-pool-resources")

	handle := getHandle(spec.Handle, id)

	var quota int64 = int64(spec.Limits.Disk.ByteHard)
	if quota == 0 {
		quota = math.MaxInt64
	}

	containerRootFSPath, rootFSEnv, err := p.acquireSystemResources(id, handle, containerPath, spec.RootFSPath, resources, spec.BindMounts, quota, pLog)
	if err != nil {
		return linux_backend.LinuxContainerSpec{}, err
	}

	pLog.Info("created")

	specEnv, err := process.NewEnv(spec.Env)
	if err != nil {
		p.tryReleaseSystemResources(p.logger, id)
		return linux_backend.LinuxContainerSpec{}, err
	}

	pLog.Debug("calculate-environment", lager.Data{
		"rootfs-env": rootFSEnv,
	})

	spec.Env = rootFSEnv.Merge(specEnv).Array()
	spec.Handle = handle

	return linux_backend.LinuxContainerSpec{
		ID:                  id,
		ContainerPath:       containerPath,
		ContainerRootFSPath: containerRootFSPath,
		Resources:           resources,
		Events:              []string{},
		Version:             p.currentContainerVersion,
		State:               linux_backend.StateBorn,

		ContainerSpec: spec,
	}, nil
}

func createContainer(containerSpec garden.ContainerSpec) garden.Container {
	handle, err := uuid.NewV4()
	Expect(err).ShouldNot(HaveOccurred())
	containerSpec.Handle = handle.String()
	container, err := client.Create(containerSpec)
	Expect(err).ShouldNot(HaveOccurred())
	err = StreamIn(container)
	Expect(err).ShouldNot(HaveOccurred())
	return container
}

func (g *Gardener) Create(spec garden.ContainerSpec) (garden.Container, error) {
	log := g.Logger.Session("create")

	if spec.Handle == "" {
		spec.Handle = g.UidGenerator.Generate()
	}

	networkPath, err := g.Networker.Network(log, spec.Handle, spec.Network)
	if err != nil {
		return nil, err
	}

	rootFSURL, err := url.Parse(spec.RootFSPath)
	if err != nil {
		g.Networker.Destroy(g.Logger, spec.Handle)
		return nil, err
	}

	rootFSPath, _, err := g.VolumeCreator.Create(spec.Handle, rootfs_provider.Spec{RootFS: rootFSURL})
	if err != nil {
		g.Networker.Destroy(g.Logger, spec.Handle)
		return nil, err
	}

	if err := g.Containerizer.Create(log, DesiredContainerSpec{
		Handle:      spec.Handle,
		RootFSPath:  rootFSPath,
		NetworkPath: networkPath,
	}); err != nil {
		g.Networker.Destroy(g.Logger, spec.Handle)
		return nil, err
	}

	container, err := g.Lookup(spec.Handle)
	if err != nil {
		return nil, err
	}

	for name, value := range spec.Properties {
		err := container.SetProperty(name, value)
		if err != nil {
			return nil, err
		}
	}

	return container, nil
}

func (g *Gardener) Create(spec garden.ContainerSpec) (garden.Container, error) {
	if spec.Handle == "" {
		spec.Handle = g.UidGenerator.Generate()
	}

	networkPath, err := g.Networker.Network(spec.Network)
	if err != nil {
		return nil, err
	}

	if err := g.Containerizer.Create(DesiredContainerSpec{
		Handle:      spec.Handle,
		NetworkPath: networkPath,
	}); err != nil {
		return nil, err
	}

	return g.Lookup(spec.Handle)
}

func (backend *Backend) Create(spec garden.ContainerSpec) (garden.Container, error) {
	backend.containersL.Lock()
	defer backend.containersL.Unlock()

	capacity, err := backend.Capacity()
	if err != nil {
		return nil, err
	}

	activeContainers := 0
	for _, container := range backend.containers {
		if _, ok := container.currentProperties()["concourse:exit-status"]; !ok {
			activeContainers++
		}
	}

	if activeContainers >= int(capacity.MaxContainers) {
		return nil, atc.WorkerNotCreatedError{errors.New("worker already has the maximum number of active containers")}
	}

	id := backend.generateContainerID()

	if spec.Handle == "" {
		spec.Handle = id
	}

	dir := filepath.Join(backend.containersDir, id)

	err = os.MkdirAll(dir, 0755)
	if err != nil {
		return nil, err
	}

	container := newContainer(spec, dir)
	backend.containers[spec.Handle] = container

	return container, nil
}

func (p *LinuxResourcePool) Acquire(spec garden.ContainerSpec) (linux_backend.LinuxContainerSpec, error) {
	id := <-p.containerIDs
	containerPath := path.Join(p.depotPath, id)
	handle := getHandle(spec.Handle, id)
	pLog := p.logger.Session("acquire", lager.Data{"handle": handle})

	iptablesCh := make(chan error, 1)

	go func(iptablesCh chan error) {
		pLog.Debug("setup-iptables-starting")
		if err := p.filterProvider.ProvideFilter(id).Setup(handle); err != nil {
			pLog.Error("setup-iptables-failed", err)
			iptablesCh <- fmt.Errorf("resource_pool: set up filter: %v", err)
		} else {
			pLog.Debug("setup-iptables-ended")
			iptablesCh <- nil
		}
	}(iptablesCh)

	pLog.Info("creating")

	resources, err := p.acquirePoolResources(spec, id, pLog)
	if err != nil {
		return linux_backend.LinuxContainerSpec{}, err
	}
	defer cleanup(&err, func() {
		p.releasePoolResources(resources, pLog)
	})

	pLog.Info("acquired-pool-resources")

	pLog.Info("running-graph-cleanup")
	if err := p.rootFSProvider.GC(pLog); err != nil {
		pLog.Error("graph-cleanup-failed", err)
	}

	containerRootFSPath, rootFSEnv, err := p.acquireSystemResources(
		spec, id, resources, pLog,
	)
	if err != nil {
		return linux_backend.LinuxContainerSpec{}, err
	}

	err = <-iptablesCh
	if err != nil {
		p.tryReleaseSystemResources(p.logger, id)
		return linux_backend.LinuxContainerSpec{}, err
	}

	pLog.Info("created")

	specEnv, err := process.NewEnv(spec.Env)
	if err != nil {
		p.tryReleaseSystemResources(p.logger, id)
		return linux_backend.LinuxContainerSpec{}, err
	}

	spec.Env = rootFSEnv.Merge(specEnv).Array()
	spec.Handle = handle

	return linux_backend.LinuxContainerSpec{
		ID:                  id,
		ContainerPath:       containerPath,
		ContainerRootFSPath: containerRootFSPath,
		Resources:           resources,
		Events:              []string{},
		Version:             p.currentContainerVersion,
		State:               linux_backend.StateBorn,

		ContainerSpec: spec,
	}, nil
}

			JustBeforeEach(func() {
				var err error
				createdContainer, err = gdnr.Create(spec)

				Expect(err).NotTo(HaveOccurred())
			})

			It("passes the rootfs provided by the volumizer to the containerizer", func() {
				Expect(containerizer.CreateArgsForCall(0).RootFSPath).To(Equal("the-volumized-rootfs-path"))
			})

			PIt("destroys volumes when creating fails", func() {})

			Context("when a handle is specified", func() {
				BeforeEach(func() {
					spec.Handle = "the-handle"
				})

				It("passes the handle to the containerizer", func() {
					Expect(containerizer.CreateArgsForCall(0).Handle).To(Equal("the-handle"))
				})

				It("remembers the handle", func() {
					Expect(createdContainer.Handle()).To(Equal("the-handle"))
				})

				PContext("and it is already in use", func() {})
			})

			Context("when a handle is not specified", func() {
				PIt("assigns a handle", func() {