dockertools

package
v0.15.1-0...-23e8066 Latest Latest
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 Go to latest Published: Apr 20, 2015 License: Apache-2.0 Imports: 29 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	PodInfraContainerName  = leaky.PodInfraContainerName
	DockerPrefix           = "docker://"
	PodInfraContainerImage = "gcr.io/google_containers/pause:0.8.0"
)

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 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() (docker.APIVersion, 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 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) FindPodContainer 

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

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 {

	// TODO(yifan): PodInfraContainerImage can be unexported once
	// we move createPodInfraContainer into dockertools.
	PodInfraContainerImage string

	// TODO(yifan): We export this for testability, so when we have a fake
	// container manager, then we can unexport this. Also at that time, we
	// use the concrete type so that we can record the pull failure and eliminate
	// the image checking in GetPodStatus().
	Puller DockerPuller
	// 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, podInfraContainerImage string, qps float32, burst int) *DockerManager

func (*DockerManager) GetKubeletDockerContainerLogs 

func (dm *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 (dm *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) GetPods 

func (dm *DockerManager) GetPods(all bool) ([]*kubecontainer.Pod, error)

func (*DockerManager) GetRunningContainers 

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

func (*DockerManager) IsImagePresent 

func (dm *DockerManager) IsImagePresent(image string) (bool, error)

func (*DockerManager) PodInfraContainerChanged 

func (dm *DockerManager) PodInfraContainerChanged(pod *api.Pod, podInfraContainer *kubecontainer.Container) (bool, error)

PodInfraContainer returns true if the pod infra container has changed.

func (*DockerManager) Pull 

func (dm *DockerManager) Pull(image string) error

func (*DockerManager) RunContainer 

func (dm *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.

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
	Errors              map[string]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.

Source Files

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