dockertools

package
v0.14.2-0...-43ec88f Latest Latest
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Published: Apr 8, 2015 License: Apache-2.0 Imports: 29 Imported by: 0

Documentation

Index

Constants

View Source
const (
	PodInfraContainerName = leaky.PodInfraContainerName
	DockerPrefix          = "docker://"
)

Variables

View Source
var (
	// ErrNoContainersInPod is returned when there are no containers for a given pod
	ErrNoContainersInPod = errors.New("no containers exist for this pod")

	// ErrNoPodInfraContainerInPod is returned when there is no pod infra container for a given pod
	ErrNoPodInfraContainerInPod = errors.New("No pod infra container exists for this pod")

	// ErrContainerCannotRun is returned when a container is created, but cannot run properly
	ErrContainerCannotRun = errors.New("Container cannot run")
)

Functions

func BuildDockerName

func BuildDockerName(dockerName KubeletContainerName, container *api.Container) string

Creates a name which can be reversed to identify both full pod name and container name.

func GetPods

func GetPods(client DockerInterface, all bool) ([]*kubecontainer.Pod, error)

TODO: Move this function with dockerCache to DockerManager.

func HashContainer

func HashContainer(container *api.Container) uint64

func StartPty

func StartPty(c *exec.Cmd) (*os.File, error)

Types

type ContainerCommandRunner

type ContainerCommandRunner interface {
	RunInContainer(containerID string, cmd []string) ([]byte, error)
	GetDockerServerVersion() ([]uint, error)
	ExecInContainer(containerID string, cmd []string, in io.Reader, out, err io.WriteCloser, tty bool) error
	PortForward(pod *kubecontainer.Pod, port uint16, stream io.ReadWriteCloser) error
}

TODO(yifan): Move this to container.Runtime.

func NewDockerContainerCommandRunner

func NewDockerContainerCommandRunner(client DockerInterface) ContainerCommandRunner

NewDockerContainerCommandRunner creates a ContainerCommandRunner which uses nsinit to run a command inside a container.

type DockerCache

type DockerCache interface {
	GetPods() ([]*container.Pod, error)
	ForceUpdateIfOlder(time.Time) error
}

func NewDockerCache

func NewDockerCache(client DockerInterface) (DockerCache, error)

func NewFakeDockerCache

func NewFakeDockerCache(client DockerInterface) DockerCache

type DockerContainers

type DockerContainers map[DockerID]*docker.APIContainers

DockerContainers is a map of containers

func GetKubeletDockerContainers

func GetKubeletDockerContainers(client DockerInterface, allContainers bool) (DockerContainers, error)

GetKubeletDockerContainers lists all container or just the running ones. Returns a map of docker containers that we manage, keyed by container ID. TODO: Move this function with dockerCache to DockerManager.

func (DockerContainers) FindContainersByPod

func (c DockerContainers) FindContainersByPod(podUID types.UID, podFullName string) DockerContainers

FindContainersByPod returns the containers that belong to the pod.

func (DockerContainers) FindPodContainer

func (c DockerContainers) FindPodContainer(podFullName string, uid types.UID, containerName string) (*docker.APIContainers, bool, uint64)

func (DockerContainers) RemoveContainerWithID

func (c DockerContainers) RemoveContainerWithID(containerID DockerID)

RemoveContainerWithID removes the container with the given containerID.

type DockerID

type DockerID string

DockerID is an ID of docker container. It is a type to make it clear when we're working with docker container Ids

type DockerInterface

type DockerInterface interface {
	ListContainers(options docker.ListContainersOptions) ([]docker.APIContainers, error)
	InspectContainer(id string) (*docker.Container, error)
	CreateContainer(docker.CreateContainerOptions) (*docker.Container, error)
	StartContainer(id string, hostConfig *docker.HostConfig) error
	StopContainer(id string, timeout uint) error
	RemoveContainer(opts docker.RemoveContainerOptions) error
	InspectImage(image string) (*docker.Image, error)
	ListImages(opts docker.ListImagesOptions) ([]docker.APIImages, error)
	PullImage(opts docker.PullImageOptions, auth docker.AuthConfiguration) error
	RemoveImage(image string) error
	Logs(opts docker.LogsOptions) error
	Version() (*docker.Env, error)
	CreateExec(docker.CreateExecOptions) (*docker.Exec, error)
	StartExec(string, docker.StartExecOptions) error
}

DockerInterface is an abstract interface for testability. It abstracts the interface of docker.Client.

func ConnectToDockerOrDie

func ConnectToDockerOrDie(dockerEndpoint string) DockerInterface

type DockerManager

type DockerManager struct {
	// contains filtered or unexported fields
}

Implements kubecontainer.ContainerRunner. TODO: Eventually DockerManager should implement kubecontainer.Runtime interface, and it should also add a cache to replace dockerCache.

func NewDockerManager

func NewDockerManager(client DockerInterface, recorder record.EventRecorder) *DockerManager

func (*DockerManager) GetKubeletDockerContainerLogs

func (self *DockerManager) GetKubeletDockerContainerLogs(containerID, tail string, follow bool, stdout, stderr io.Writer) (err error)

GetKubeletDockerContainerLogs returns logs of a specific container. By default, it returns a snapshot of the container log. Set |follow| to true to stream the log. Set |follow| to false and specify the number of lines (e.g. "100" or "all") to tail the log. TODO: Make 'RawTerminal' option flagable.

func (*DockerManager) GetPodStatus

func (self *DockerManager) GetPodStatus(pod *api.Pod) (*api.PodStatus, error)

GetPodStatus returns docker related status for all containers in the pod as well as the infrastructure container.

func (*DockerManager) GetRunningContainers

func (self *DockerManager) GetRunningContainers(ids []string) ([]*docker.Container, error)

func (*DockerManager) RunContainer

func (self *DockerManager) RunContainer(pod *api.Pod, container *api.Container, opts *kubecontainer.RunContainerOptions) (string, error)

type DockerPuller

type DockerPuller interface {
	Pull(image string) error
	IsImagePresent(image string) (bool, error)
}

DockerPuller is an abstract interface for testability. It abstracts image pull operations.

func NewDockerPuller

func NewDockerPuller(client DockerInterface, qps float32, burst int) DockerPuller

NewDockerPuller creates a new instance of the default implementation of DockerPuller.

type FakeDockerCache

type FakeDockerCache struct {
	// contains filtered or unexported fields
}

func (*FakeDockerCache) ForceUpdateIfOlder

func (f *FakeDockerCache) ForceUpdateIfOlder(time.Time) error

func (*FakeDockerCache) GetPods

func (f *FakeDockerCache) GetPods() ([]*container.Pod, error)

type FakeDockerClient

type FakeDockerClient struct {
	sync.Mutex
	ContainerList       []docker.APIContainers
	ExitedContainerList []docker.APIContainers
	Container           *docker.Container
	ContainerMap        map[string]*docker.Container
	Image               *docker.Image
	Images              []docker.APIImages
	Err                 error

	Stopped []string

	Created       []string
	Removed       []string
	RemovedImages util.StringSet
	VersionInfo   docker.Env
	// contains filtered or unexported fields
}

FakeDockerClient is a simple fake docker client, so that kubelet can be run for testing without requiring a real docker setup.

func (*FakeDockerClient) AssertCalls

func (f *FakeDockerClient) AssertCalls(calls []string) (err error)

func (*FakeDockerClient) AssertCreated

func (f *FakeDockerClient) AssertCreated(created []string) error

func (*FakeDockerClient) AssertStopped

func (f *FakeDockerClient) AssertStopped(stopped []string) error

func (*FakeDockerClient) AssertUnorderedCalls

func (f *FakeDockerClient) AssertUnorderedCalls(calls []string) (err error)

func (*FakeDockerClient) ClearCalls

func (f *FakeDockerClient) ClearCalls()

func (*FakeDockerClient) CreateContainer

func (f *FakeDockerClient) CreateContainer(c docker.CreateContainerOptions) (*docker.Container, error)

CreateContainer is a test-spy implementation of DockerInterface.CreateContainer. It adds an entry "create" to the internal method call record.

func (*FakeDockerClient) CreateExec

func (f *FakeDockerClient) CreateExec(_ docker.CreateExecOptions) (*docker.Exec, error)

func (*FakeDockerClient) InspectContainer

func (f *FakeDockerClient) InspectContainer(id string) (*docker.Container, error)

InspectContainer is a test-spy implementation of DockerInterface.InspectContainer. It adds an entry "inspect" to the internal method call record.

func (*FakeDockerClient) InspectImage

func (f *FakeDockerClient) InspectImage(name string) (*docker.Image, error)

InspectImage is a test-spy implementation of DockerInterface.InspectImage. It adds an entry "inspect" to the internal method call record.

func (*FakeDockerClient) ListContainers

func (f *FakeDockerClient) ListContainers(options docker.ListContainersOptions) ([]docker.APIContainers, error)

ListContainers is a test-spy implementation of DockerInterface.ListContainers. It adds an entry "list" to the internal method call record.

func (*FakeDockerClient) ListImages

func (f *FakeDockerClient) ListImages(opts docker.ListImagesOptions) ([]docker.APIImages, error)

func (*FakeDockerClient) Logs

func (f *FakeDockerClient) Logs(opts docker.LogsOptions) error

Logs is a test-spy implementation of DockerInterface.Logs. It adds an entry "logs" to the internal method call record.

func (*FakeDockerClient) PullImage

func (f *FakeDockerClient) PullImage(opts docker.PullImageOptions, auth docker.AuthConfiguration) error

PullImage is a test-spy implementation of DockerInterface.StopContainer. It adds an entry "pull" to the internal method call record.

func (*FakeDockerClient) RemoveContainer

func (f *FakeDockerClient) RemoveContainer(opts docker.RemoveContainerOptions) error

func (*FakeDockerClient) RemoveImage

func (f *FakeDockerClient) RemoveImage(image string) error

func (*FakeDockerClient) StartContainer

func (f *FakeDockerClient) StartContainer(id string, hostConfig *docker.HostConfig) error

StartContainer is a test-spy implementation of DockerInterface.StartContainer. It adds an entry "start" to the internal method call record.

func (*FakeDockerClient) StartExec

func (f *FakeDockerClient) StartExec(_ string, _ docker.StartExecOptions) error

func (*FakeDockerClient) StopContainer

func (f *FakeDockerClient) StopContainer(id string, timeout uint) error

StopContainer is a test-spy implementation of DockerInterface.StopContainer. It adds an entry "stop" to the internal method call record.

func (*FakeDockerClient) Version

func (f *FakeDockerClient) Version() (*docker.Env, error)

type FakeDockerPuller

type FakeDockerPuller struct {
	sync.Mutex

	HasImages    []string
	ImagesPulled []string

	// Every pull will return the first error here, and then reslice
	// to remove it. Will give nil errors if this slice is empty.
	ErrorsToInject []error
}

FakeDockerPuller is a stub implementation of DockerPuller.

func (*FakeDockerPuller) IsImagePresent

func (f *FakeDockerPuller) IsImagePresent(name string) (bool, error)

func (*FakeDockerPuller) Pull

func (f *FakeDockerPuller) Pull(image string) (err error)

Pull records the image pull attempt, and optionally injects an error.

type KubeletContainerName

type KubeletContainerName struct {
	PodFullName   string
	PodUID        types.UID
	ContainerName string
}

func ParseDockerName

func ParseDockerName(name string) (dockerName *KubeletContainerName, hash uint64, err error)

Unpacks a container name, returning the pod full name and container name we would have used to construct the docker name. If we are unable to parse the name, an error is returned.

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