rktshim

Documentation

Overview

Package rktshim is the package that contains the shim code for rkt to be used as the kubelet container runtime implementation that is integrated using the Container Runtime Interface.

Index

• Constants
• Variables
• func NewFakeRuntime() (kubeletapi.ContainerManager, error)
• func NewPodSandboxManager(PodSandboxManagerConfig) (kubeletapi.PodSandboxManager, error)
• func NewRuntime(RuntimeConfig) (kubeletapi.ContainerManager, error)
• type FakeRuntime
  • func (r *FakeRuntime) Attach(req *runtimeapi.AttachRequest) (*runtimeapi.AttachResponse, error)
  • func (r *FakeRuntime) ContainerStatus(id string) (*runtimeapi.ContainerStatus, error)
  • func (r *FakeRuntime) CreateContainer(pid string, cfg *runtimeapi.ContainerConfig, ...) (string, error)
  • func (r *FakeRuntime) Exec(req *runtimeapi.ExecRequest) (*runtimeapi.ExecResponse, error)
  • func (r *FakeRuntime) ExecSync(containerID string, cmd []string, timeout time.Duration) (stdout []byte, stderr []byte, err error)
  • func (r *FakeRuntime) ListContainers(*runtimeapi.ContainerFilter) ([]*runtimeapi.Container, error)
  • func (r *FakeRuntime) RemoveContainer(id string) error
  • func (r *FakeRuntime) StartContainer(id string) error
  • func (r *FakeRuntime) StopContainer(id string, timeout int64) error
  • func (r *FakeRuntime) UpdateContainerResources(string, *runtimeapi.LinuxContainerResources) error
• type FakeRuntimeConfig
• type ImageStore
  • func NewImageStore(ImageStoreConfig) (*ImageStore, error)
  • func (*ImageStore) List() ([]runtimeapi.Image, error)
  • func (*ImageStore) Pull(runtimeapi.ImageSpec, runtimeapi.AuthConfig, *runtimeapi.PodSandboxConfig) error
  • func (*ImageStore) Remove(runtimeapi.ImageSpec) error
  • func (*ImageStore) Status(runtimeapi.ImageSpec) (runtimeapi.Image, error)
• type ImageStoreConfig
• type PodSandboxManager
  • func (*PodSandboxManager) ListPodSandbox(*runtimeapi.PodSandboxFilter) ([]*runtimeapi.PodSandbox, error)
  • func (*PodSandboxManager) PodSandboxStatus(string) (*runtimeapi.PodSandboxStatus, error)
  • func (*PodSandboxManager) PortForward(*runtimeapi.PortForwardRequest) (*runtimeapi.PortForwardResponse, error)
  • func (*PodSandboxManager) RemovePodSandbox(string) error
  • func (*PodSandboxManager) RunPodSandbox(*runtimeapi.PodSandboxConfig) (string, error)
  • func (*PodSandboxManager) StopPodSandbox(string) error
• type PodSandboxManagerConfig
• type Runtime
  • func (*Runtime) Attach(req *runtimeapi.AttachRequest) (*runtimeapi.AttachResponse, error)
  • func (*Runtime) ContainerStatus(string) (*runtimeapi.ContainerStatus, error)
  • func (*Runtime) CreateContainer(string, *runtimeapi.ContainerConfig, *runtimeapi.PodSandboxConfig) (string, error)
  • func (*Runtime) Exec(*runtimeapi.ExecRequest) (*runtimeapi.ExecResponse, error)
  • func (*Runtime) ExecSync(containerID string, cmd []string, timeout time.Duration) (stdout []byte, stderr []byte, err error)
  • func (*Runtime) ListContainers(*runtimeapi.ContainerFilter) ([]*runtimeapi.Container, error)
  • func (*Runtime) RemoveContainer(string) error
  • func (*Runtime) StartContainer(string) error
  • func (*Runtime) StopContainer(string, int64) error
  • func (*Runtime) UpdateContainerResources(string, *runtimeapi.LinuxContainerResources) error
• type RuntimeConfig

Constants

const (
	FakeStreamingHost = "localhost"
	FakeStreamingPort = "12345"
)

Variables

var (
	ErrContainerNotFound               = errors.New("rktshim: container not found")
	ErrInvalidContainerStateTransition = errors.New("rktshim: wrong container operation for current state")
)

var (
	ErrImageNotFound = errors.New("rktshim: image not found")
)

TODO(tmrts): Move these errors to the container API for code re-use.

Functions

func NewFakeRuntime

func NewFakeRuntime() (kubeletapi.ContainerManager, error)

func NewPodSandboxManager

func NewPodSandboxManager(PodSandboxManagerConfig) (kubeletapi.PodSandboxManager, error)

NewPodSandboxManager creates a PodSandboxManager.

func NewRuntime

func NewRuntime(RuntimeConfig) (kubeletapi.ContainerManager, error)

NewRuntime creates a container.Runtime instance using the Runtime.

Types

type FakeRuntime

type FakeRuntime struct {
	Containers containerRegistry
}

func (*FakeRuntime) Attach

func (r *FakeRuntime) Attach(req *runtimeapi.AttachRequest) (*runtimeapi.AttachResponse, error)

func (*FakeRuntime) ContainerStatus

func (r *FakeRuntime) ContainerStatus(id string) (*runtimeapi.ContainerStatus, error)

func (*FakeRuntime) CreateContainer

func (r *FakeRuntime) CreateContainer(pid string, cfg *runtimeapi.ContainerConfig, sandboxCfg *runtimeapi.PodSandboxConfig) (string, error)

func (*FakeRuntime) Exec

func (r *FakeRuntime) Exec(req *runtimeapi.ExecRequest) (*runtimeapi.ExecResponse, error)

func (*FakeRuntime) ExecSync

func (r *FakeRuntime) ExecSync(containerID string, cmd []string, timeout time.Duration) (stdout []byte, stderr []byte, err error)

func (*FakeRuntime) ListContainers

func (r *FakeRuntime) ListContainers(*runtimeapi.ContainerFilter) ([]*runtimeapi.Container, error)

func (*FakeRuntime) RemoveContainer

func (r *FakeRuntime) RemoveContainer(id string) error

func (*FakeRuntime) StartContainer

func (r *FakeRuntime) StartContainer(id string) error

func (*FakeRuntime) StopContainer

func (r *FakeRuntime) StopContainer(id string, timeout int64) error

func (*FakeRuntime) UpdateContainerResources

func (r *FakeRuntime) UpdateContainerResources(string, *runtimeapi.LinuxContainerResources) error

type FakeRuntimeConfig

type FakeRuntimeConfig struct{}

type ImageStore

type ImageStore struct{}

ImageStore supports CRUD operations for images.

func NewImageStore

func NewImageStore(ImageStoreConfig) (*ImageStore, error)

NewImageStore creates an image storage that allows CRUD operations for images.

func (*ImageStore) List

func (*ImageStore) List() ([]runtimeapi.Image, error)

List lists the images residing in the image store.

func (*ImageStore) Pull

func (*ImageStore) Pull(runtimeapi.ImageSpec, runtimeapi.AuthConfig, *runtimeapi.PodSandboxConfig) error

Pull pulls an image into the image store and uses the given authentication method.

func (*ImageStore) Remove

func (*ImageStore) Remove(runtimeapi.ImageSpec) error

Remove removes the image from the image store.

func (*ImageStore) Status

func (*ImageStore) Status(runtimeapi.ImageSpec) (runtimeapi.Image, error)

Status returns the status of the image.

type ImageStoreConfig

type ImageStoreConfig struct{}

TODO(tmrts): fill the image store configuration fields.

type PodSandboxManager

type PodSandboxManager struct{}

PodSandboxManager provides basic operations to create/delete and examine the pod sandboxes in a blocking manner.

func (*PodSandboxManager) ListPodSandbox

func (*PodSandboxManager) ListPodSandbox(*runtimeapi.PodSandboxFilter) ([]*runtimeapi.PodSandbox, error)

ListPodSandbox lists existing sandboxes, filtered by the PodSandboxFilter.

func (*PodSandboxManager) PodSandboxStatus

func (*PodSandboxManager) PodSandboxStatus(string) (*runtimeapi.PodSandboxStatus, error)

PodSandboxStatus queries the status of the pod sandbox.

func (*PodSandboxManager) PortForward

func (*PodSandboxManager) PortForward(*runtimeapi.PortForwardRequest) (*runtimeapi.PortForwardResponse, error)

PortForward prepares a streaming endpoint to forward ports from a PodSandbox, and returns the address.

func (*PodSandboxManager) RemovePodSandbox

func (*PodSandboxManager) RemovePodSandbox(string) error

RemovePodSandbox deletes the pod sandbox and the apps inside the sandbox.

func (*PodSandboxManager) RunPodSandbox

func (*PodSandboxManager) RunPodSandbox(*runtimeapi.PodSandboxConfig) (string, error)

RunPodSandbox creates and starts a pod sandbox given a pod sandbox configuration.

func (*PodSandboxManager) StopPodSandbox

func (*PodSandboxManager) StopPodSandbox(string) error

StopPodSandbox stops a pod sandbox and the apps inside the sandbox.

type PodSandboxManagerConfig

type PodSandboxManagerConfig struct{}

TODO(tmrts): Fill the configuration struct fields.

type Runtime

type Runtime struct{}

Runtime provides an API for lifecycle, inspection and introspection operations in a blocking manner using the App level API provided by rkt.

func (*Runtime) Attach

func (*Runtime) Attach(req *runtimeapi.AttachRequest) (*runtimeapi.AttachResponse, error)

Attach prepares a streaming endpoint to attach to a running container, and returns the address.

func (*Runtime) ContainerStatus

func (*Runtime) ContainerStatus(string) (*runtimeapi.ContainerStatus, error)

ContainerStatus returns the RawContainerStatus of an app inside the pod sandbox.

func (*Runtime) CreateContainer

func (*Runtime) CreateContainer(string, *runtimeapi.ContainerConfig, *runtimeapi.PodSandboxConfig) (string, error)

CreateContainer creates an app inside the provided pod sandbox and returns the RawContainerID.

func (*Runtime) Exec

func (*Runtime) Exec(*runtimeapi.ExecRequest) (*runtimeapi.ExecResponse, error)

Exec prepares a streaming endpoint to execute a command in the container, and returns the address.

func (*Runtime) ExecSync

func (*Runtime) ExecSync(containerID string, cmd []string, timeout time.Duration) (stdout []byte, stderr []byte, err error)

ExecSync executes a command in the container, and returns the stdout output. If command exits with a non-zero exit code, an error is returned.

func (*Runtime) ListContainers

func (*Runtime) ListContainers(*runtimeapi.ContainerFilter) ([]*runtimeapi.Container, error)

ListContainers lists out the apps residing inside the pod sandbox using the ContainerFilter.

func (*Runtime) RemoveContainer

func (*Runtime) RemoveContainer(string) error

RemoveContainer removes the app from a pod sandbox.

func (*Runtime) StartContainer

func (*Runtime) StartContainer(string) error

StartContainer starts a created app.

func (*Runtime) StopContainer

func (*Runtime) StopContainer(string, int64) error

StopContainer stops a running app with a grace period (i.e. timeout).

func (*Runtime) UpdateContainerResources

func (*Runtime) UpdateContainerResources(string, *runtimeapi.LinuxContainerResources) error

UpdateContainerResources updates the resource constraints for the container.

type RuntimeConfig

type RuntimeConfig struct{}

TODO(tmrts): Fill out the creation configuration fields.