dockertools

package
v1.5.0-beta.3 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Dec 8, 2016 License: Apache-2.0 Imports: 69 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	PodInfraContainerName = leaky.PodInfraContainerName
	DockerPrefix          = "docker://"
	DockerPullablePrefix  = "docker-pullable://"
	LogSuffix             = "log"
)
View Source 
const (
	DockerType = "docker"

	DockerV112APIVersion = "1.24"

	DockerNetnsFmt = "/proc/%v/ns/net"
)

Variables

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

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

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

Functions

func AttachContainer added in v1.4.0 

func AttachContainer(client DockerInterface, containerID string, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool, resize <-chan term.Size) error

Temporarily export this function to share with dockershim. TODO: clean this up.

func BuildDockerName 

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

Creates a name which can be reversed to identify both full pod name and container name. This function returns stable name, unique name and a unique id. Although rand.Uint32() is not really unique, but it's enough for us because error will only occur when instances of the same container in the same pod have the same UID. The chance is really slim.

func GetAppArmorOpts added in v1.5.0 

func GetAppArmorOpts(annotations map[string]string, ctrName string) ([]dockerOpt, error)

Temporarily export this function to share with dockershim. TODO: clean this up.

func GetContainerLogs added in v1.4.0 

func GetContainerLogs(client DockerInterface, pod *api.Pod, containerID kubecontainer.ContainerID, logOptions *api.PodLogOptions, stdout, stderr io.Writer, rawTerm bool) error

Temporarily export this function to share with dockershim. TODO: clean this up.

func GetKubeletDockerContainers 

func GetKubeletDockerContainers(client DockerInterface, allContainers bool) ([]*dockertypes.Container, error)

GetKubeletDockerContainers lists all container or just the running ones. Returns a list of docker containers that we manage

func GetSeccompOpts added in v1.5.0 

func GetSeccompOpts(annotations map[string]string, ctrName, profileRoot string) ([]dockerOpt, error)

Temporarily export this function to share with dockershim. TODO: clean this up.

func GetUserFromImageUser added in v1.5.0 

func GetUserFromImageUser(id string) string

GetUserFromImageUser splits the user out of an user:group string.

func IsImageNotFoundError added in v1.5.0 

func IsImageNotFoundError(err error) bool

IsImageNotFoundError checks whether the error is image not found error. This is exposed to share with dockershim. 

func LogSymlink(containerLogsDir, podFullName, containerName, dockerId string) string

func NewCalledDetail added in v1.5.0 

func NewCalledDetail(name string, arguments []interface{}) calledDetail

NewCalledDetail create a new call detail item.

func NewContainerGC added in v1.2.0 

func NewContainerGC(client DockerInterface, podGetter podGetter, containerLogsDir string) *containerGC

func ParseDockerTimestamp added in v1.4.0 

func ParseDockerTimestamp(s string) (time.Time, error)

ParseDockerTimestamp parses the timestamp returned by DockerInterface from string to time.Time

func PodInfraContainerEnv added in v1.2.0 

func PodInfraContainerEnv(env map[string]string) kubecontainer.Option

func PortForward added in v1.5.0 

func PortForward(client DockerInterface, podInfraContainerID string, port uint16, stream io.ReadWriteCloser) error

Temporarily export this function to share with dockershim.

func SetContainerNamePrefix added in v1.2.0 

func SetContainerNamePrefix(prefix string)

SetContainerNamePrefix allows the container prefix name for this process to be changed. This is intended to support testing and bootstrapping experimentation. It cannot be changed once the Kubelet starts.

Types

type DockerInterface 

type DockerInterface interface {
	ListContainers(options dockertypes.ContainerListOptions) ([]dockertypes.Container, error)
	InspectContainer(id string) (*dockertypes.ContainerJSON, error)
	CreateContainer(dockertypes.ContainerCreateConfig) (*dockertypes.ContainerCreateResponse, error)
	StartContainer(id string) error
	StopContainer(id string, timeout int) error
	RemoveContainer(id string, opts dockertypes.ContainerRemoveOptions) error
	InspectImageByRef(imageRef string) (*dockertypes.ImageInspect, error)
	InspectImageByID(imageID string) (*dockertypes.ImageInspect, error)
	ListImages(opts dockertypes.ImageListOptions) ([]dockertypes.Image, error)
	PullImage(image string, auth dockertypes.AuthConfig, opts dockertypes.ImagePullOptions) error
	RemoveImage(image string, opts dockertypes.ImageRemoveOptions) ([]dockertypes.ImageDelete, error)
	ImageHistory(id string) ([]dockertypes.ImageHistory, error)
	Logs(string, dockertypes.ContainerLogsOptions, StreamOptions) error
	Version() (*dockertypes.Version, error)
	Info() (*dockertypes.Info, error)
	CreateExec(string, dockertypes.ExecConfig) (*dockertypes.ContainerExecCreateResponse, error)
	StartExec(string, dockertypes.ExecStartCheck, StreamOptions) error
	InspectExec(id string) (*dockertypes.ContainerExecInspect, error)
	AttachToContainer(string, dockertypes.ContainerAttachOptions, StreamOptions) error
	ResizeContainerTTY(id string, height, width int) error
	ResizeExecTTY(id string, height, width int) error
}

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

func ConnectToDockerOrDie added in v0.11.0 

func ConnectToDockerOrDie(dockerEndpoint string, requestTimeout time.Duration) DockerInterface

ConnectToDockerOrDie creates docker client connecting to docker daemon. If the endpoint passed in is "fake://", a fake docker client will be returned. The program exits if error occurs. The requestTimeout is the timeout for docker requests. If timeout is exceeded, the request will be cancelled and throw out an error. If requestTimeout is 0, a default value will be applied.

func NewInstrumentedDockerInterface added in v0.16.0 

func NewInstrumentedDockerInterface(dockerClient DockerInterface) DockerInterface

Creates an instrumented DockerInterface from an existing DockerInterface.

type DockerManager added in v0.15.0 

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

func NewDockerManager added in v0.15.0 

func NewDockerManager(
	client DockerInterface,
	recorder record.EventRecorder,
	livenessManager proberesults.Manager,
	containerRefManager *kubecontainer.RefManager,
	podGetter podGetter,
	machineInfo *cadvisorapi.MachineInfo,
	podInfraContainerImage string,
	qps float32,
	burst int,
	containerLogsDir string,
	osInterface kubecontainer.OSInterface,
	networkPlugin network.NetworkPlugin,
	runtimeHelper kubecontainer.RuntimeHelper,
	httpClient types.HttpGetter,
	execHandler ExecHandler,
	oomAdjuster *oom.OOMAdjuster,
	procFs procfs.ProcFSInterface,
	cpuCFSQuota bool,
	imageBackOff *flowcontrol.Backoff,
	serializeImagePulls bool,
	enableCustomMetrics bool,
	hairpinMode bool,
	seccompProfileRoot string,
	options ...kubecontainer.Option) *DockerManager

func NewFakeDockerManager added in v0.17.0 

func NewFakeDockerManager(
	client DockerInterface,
	recorder record.EventRecorder,
	livenessManager proberesults.Manager,
	containerRefManager *kubecontainer.RefManager,
	machineInfo *cadvisorapi.MachineInfo,
	podInfraContainerImage string,
	qps float32,
	burst int,
	containerLogsDir string,
	osInterface kubecontainer.OSInterface,
	networkPlugin network.NetworkPlugin,
	runtimeHelper kubecontainer.RuntimeHelper,
	httpClient kubetypes.HttpGetter, imageBackOff *flowcontrol.Backoff) *DockerManager

func (*DockerManager) APIVersion added in v1.2.0 

func (dm *DockerManager) APIVersion() (kubecontainer.Version, error)

func (*DockerManager) AttachContainer added in v1.1.0 

func (dm *DockerManager) AttachContainer(containerID kubecontainer.ContainerID, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool, resize <-chan term.Size) error

func (*DockerManager) DeleteContainer added in v1.4.0 

func (dm *DockerManager) DeleteContainer(containerID kubecontainer.ContainerID) error

func (*DockerManager) ExecInContainer added in v0.16.0 

func (dm *DockerManager) ExecInContainer(containerID kubecontainer.ContainerID, cmd []string, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool, resize <-chan term.Size, timeout time.Duration) error

ExecInContainer runs the command inside the container identified by containerID.

func (*DockerManager) GarbageCollect added in v1.2.0 

func (dm *DockerManager) GarbageCollect(gcPolicy kubecontainer.ContainerGCPolicy, allSourcesReady bool) error

Garbage collection of dead containers

func (*DockerManager) GetContainerLogs added in v0.17.0 

func (dm *DockerManager) GetContainerLogs(pod *api.Pod, containerID kubecontainer.ContainerID, logOptions *api.PodLogOptions, stdout, stderr io.Writer) error

GetContainerLogs 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) GetContainers added in v0.17.0 

func (dm *DockerManager) GetContainers(all bool) ([]*kubecontainer.Container, error)

GetContainers returns a list of running containers if |all| is false; otherwise, it returns all containers.

func (*DockerManager) GetNetNS added in v1.2.0 

func (dm *DockerManager) GetNetNS(containerID kubecontainer.ContainerID) (string, error)

GetNetNS returns the network namespace path for the given container

func (*DockerManager) GetPodContainerID added in v1.3.0 

func (dm *DockerManager) GetPodContainerID(pod *kubecontainer.Pod) (kubecontainer.ContainerID, error)

func (*DockerManager) GetPodStatus added in v0.15.0 

func (dm *DockerManager) GetPodStatus(uid kubetypes.UID, name, namespace string) (*kubecontainer.PodStatus, error)

func (*DockerManager) GetPods added in v0.16.0 

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

func (DockerManager) ImageStats added in v1.3.0 

func (isp DockerManager) ImageStats() (*runtime.ImageStats, error)

func (*DockerManager) IsImagePresent added in v0.16.0 

func (dm *DockerManager) IsImagePresent(image kubecontainer.ImageSpec) (bool, error)

IsImagePresent checks whether the container image is already in the local storage.

func (*DockerManager) KillContainerInPod added in v0.17.0 

func (dm *DockerManager) KillContainerInPod(containerID kubecontainer.ContainerID, container *api.Container, pod *api.Pod, message string, gracePeriodOverride *int64) error

KillContainerInPod kills a container in the pod. It must be passed either a container ID or a container and pod, and will attempt to lookup the other information if missing.

func (*DockerManager) KillPod added in v0.16.0 

func (dm *DockerManager) KillPod(pod *api.Pod, runningPod kubecontainer.Pod, gracePeriodOverride *int64) error

TODO(random-liu): Change running pod to pod status in the future. We can't do it now, because kubelet also uses this function without pod status. We can only deprecate this after refactoring kubelet. TODO(random-liu): After using pod status for KillPod(), we can also remove the kubernetesPodLabel, because all the needed information should have been extract from new labels and stored in pod status. only hard eviction scenarios should provide a grace period override, all other code paths must pass nil.

func (*DockerManager) ListImages added in v0.17.0 

func (dm *DockerManager) ListImages() ([]kubecontainer.Image, error)

List all images in the local storage.

func (*DockerManager) PortForward added in v0.16.0 

func (dm *DockerManager) PortForward(pod *kubecontainer.Pod, port uint16, stream io.ReadWriteCloser) error

PortForward executes socat in the pod's network namespace and copies data between stream (representing the user's local connection on their computer) and the specified port in the container.

TODO:

  • match cgroups of container
  • should we support nsenter + socat on the host? (current impl)
  • should we support nsenter + socat in a container, running with elevated privs and --pid=host?

func (*DockerManager) PullImage added in v0.17.0 

func (dm *DockerManager) PullImage(image kubecontainer.ImageSpec, secrets []api.Secret) error

PullImage pulls an image from network to local storage.

func (*DockerManager) RemoveImage added in v0.17.0 

func (dm *DockerManager) RemoveImage(image kubecontainer.ImageSpec) error

Removes the specified image.

func (*DockerManager) Status added in v1.2.0 

func (dm *DockerManager) Status() (*kubecontainer.RuntimeStatus, error)

Status returns error if docker daemon is unhealthy, nil otherwise. Now we do this by checking whether: 1) `docker version` works 2) docker version is compatible with minimum requirement

func (*DockerManager) SyncPod added in v0.17.0 

func (dm *DockerManager) SyncPod(pod *api.Pod, _ api.PodStatus, podStatus *kubecontainer.PodStatus, pullSecrets []api.Secret, backOff *flowcontrol.Backoff) (result kubecontainer.PodSyncResult)

Sync the running pod to match the specified desired pod.

func (*DockerManager) Type added in v1.2.0 

func (dm *DockerManager) Type() string

func (*DockerManager) UpdatePodCIDR added in v1.5.0 

func (dm *DockerManager) UpdatePodCIDR(podCIDR string) error

UpdatePodCIDR updates the podCIDR for the runtime. Currently no-ops, just implemented to satisfy the cri.

func (*DockerManager) Version added in v0.16.0 

func (dm *DockerManager) Version() (kubecontainer.Version, error)

type DockerPuller 

type DockerPuller interface {
	Pull(image string, secrets []api.Secret) error
	IsImagePresent(image string) (bool, error)
}

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

type ExecHandler added in v0.19.0 

type ExecHandler interface {
	ExecInContainer(client DockerInterface, container *dockertypes.ContainerJSON, cmd []string, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool, resize <-chan term.Size, timeout time.Duration) error
}

ExecHandler knows how to execute a command in a running Docker container.

type FakeContainer added in v1.3.0 

type FakeContainer struct {
	ID         string
	Name       string
	Running    bool
	ExitCode   int
	Pid        int
	CreatedAt  time.Time
	StartedAt  time.Time
	FinishedAt time.Time
	Config     *dockercontainer.Config
	HostConfig *dockercontainer.HostConfig
}

Because the new data type returned by engine-api is too complex to manually initialize, we need a fake container which is easier to initialize.

type FakeDockerClient 

type FakeDockerClient struct {
	sync.Mutex
	Clock                clock.Clock
	RunningContainerList []dockertypes.Container
	ExitedContainerList  []dockertypes.Container
	ContainerMap         map[string]*dockertypes.ContainerJSON
	Image                *dockertypes.ImageInspect
	Images               []dockertypes.Image
	Errors               map[string]error

	// Created, Stopped and Removed all container docker ID
	Created     []string
	Started     []string
	Stopped     []string
	Removed     []string
	VersionInfo dockertypes.Version
	Information dockertypes.Info
	ExecInspect *dockertypes.ContainerExecInspect

	EnableSleep     bool
	ImageHistoryMap map[string][]dockertypes.ImageHistory
	// 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 NewFakeDockerClient added in v1.2.0 

func NewFakeDockerClient() *FakeDockerClient

func NewFakeDockerClientWithClock added in v1.5.0 

func NewFakeDockerClientWithClock(c clock.Clock) *FakeDockerClient

func NewFakeDockerClientWithVersion added in v1.2.0 

func NewFakeDockerClientWithVersion(version, apiVersion string) *FakeDockerClient

func (*FakeDockerClient) AssertCallDetails added in v1.3.3 

func (f *FakeDockerClient) AssertCallDetails(calls ...calledDetail) (err error)

func (*FakeDockerClient) AssertCalls 

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

func (*FakeDockerClient) AssertCreated added in v0.15.0 

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

func (*FakeDockerClient) AssertStarted added in v1.4.0 

func (f *FakeDockerClient) AssertStarted(started []string) error

func (*FakeDockerClient) AssertStopped added in v0.15.0 

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

func (*FakeDockerClient) AttachToContainer added in v1.1.0 

func (f *FakeDockerClient) AttachToContainer(id string, opts dockertypes.ContainerAttachOptions, sopts StreamOptions) error

func (*FakeDockerClient) ClearCalls added in v0.8.0 

func (f *FakeDockerClient) ClearCalls()

func (*FakeDockerClient) ClearErrors added in v1.2.0 

func (f *FakeDockerClient) ClearErrors()

func (*FakeDockerClient) CreateContainer 

func (f *FakeDockerClient) CreateContainer(c dockertypes.ContainerCreateConfig) (*dockertypes.ContainerCreateResponse, error)

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

func (*FakeDockerClient) CreateExec added in v0.5.1 

func (f *FakeDockerClient) CreateExec(id string, opts dockertypes.ExecConfig) (*dockertypes.ContainerExecCreateResponse, error)

func (*FakeDockerClient) ImageHistory added in v1.3.0 

func (f *FakeDockerClient) ImageHistory(id string) ([]dockertypes.ImageHistory, error)

func (*FakeDockerClient) Info added in v0.16.0 

func (f *FakeDockerClient) Info() (*dockertypes.Info, error)

func (*FakeDockerClient) InjectError added in v1.2.0 

func (f *FakeDockerClient) InjectError(fn string, err error)

func (*FakeDockerClient) InjectErrors added in v1.2.0 

func (f *FakeDockerClient) InjectErrors(errs map[string]error)

func (*FakeDockerClient) InjectImageHistory added in v1.3.0 

func (f *FakeDockerClient) InjectImageHistory(data map[string][]dockertypes.ImageHistory)

func (*FakeDockerClient) InjectImages added in v1.3.0 

func (f *FakeDockerClient) InjectImages(images []dockertypes.Image)

func (*FakeDockerClient) InspectContainer 

func (f *FakeDockerClient) InspectContainer(id string) (*dockertypes.ContainerJSON, error)

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

func (*FakeDockerClient) InspectExec added in v0.18.0 

func (f *FakeDockerClient) InspectExec(id string) (*dockertypes.ContainerExecInspect, error)

func (*FakeDockerClient) InspectImageByID added in v1.5.0 

func (f *FakeDockerClient) InspectImageByID(name string) (*dockertypes.ImageInspect, error)

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

func (*FakeDockerClient) InspectImageByRef added in v1.5.0 

func (f *FakeDockerClient) InspectImageByRef(name string) (*dockertypes.ImageInspect, error)

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

func (*FakeDockerClient) ListContainers 

func (f *FakeDockerClient) ListContainers(options dockertypes.ContainerListOptions) ([]dockertypes.Container, error)

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

func (*FakeDockerClient) ListImages added in v0.8.0 

func (f *FakeDockerClient) ListImages(opts dockertypes.ImageListOptions) ([]dockertypes.Image, error)

func (*FakeDockerClient) Logs 

func (f *FakeDockerClient) Logs(id string, opts dockertypes.ContainerLogsOptions, sopts StreamOptions) 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(image string, auth dockertypes.AuthConfig, opts dockertypes.ImagePullOptions) error

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

func (*FakeDockerClient) RemoveContainer added in v0.4.2 

func (f *FakeDockerClient) RemoveContainer(id string, opts dockertypes.ContainerRemoveOptions) error

func (*FakeDockerClient) RemoveImage added in v0.8.0 

func (f *FakeDockerClient) RemoveImage(image string, opts dockertypes.ImageRemoveOptions) ([]dockertypes.ImageDelete, error)

func (*FakeDockerClient) ResizeContainerTTY added in v1.4.0 

func (f *FakeDockerClient) ResizeContainerTTY(id string, height, width int) error

func (*FakeDockerClient) ResizeExecTTY added in v1.4.0 

func (f *FakeDockerClient) ResizeExecTTY(id string, height, width int) error

func (*FakeDockerClient) SetFakeContainers added in v1.2.0 

func (f *FakeDockerClient) SetFakeContainers(containers []*FakeContainer)

func (*FakeDockerClient) SetFakeRunningContainers added in v1.2.0 

func (f *FakeDockerClient) SetFakeRunningContainers(containers []*FakeContainer)

func (*FakeDockerClient) StartContainer 

func (f *FakeDockerClient) StartContainer(id string) error

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

func (*FakeDockerClient) StartExec added in v0.5.1 

func (f *FakeDockerClient) StartExec(startExec string, opts dockertypes.ExecStartCheck, sopts StreamOptions) error

func (*FakeDockerClient) StopContainer 

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

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

func (*FakeDockerClient) Version added in v0.5.1 

func (f *FakeDockerClient) Version() (*dockertypes.Version, 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, secrets []api.Secret) (err error)

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

type KubeletContainerName added in v0.14.0 

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

KubeletContainerName encapsulates a pod name and a Kubernetes container name.

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.

type NativeExecHandler added in v0.19.0 

type NativeExecHandler struct{}

NativeExecHandler executes commands in Docker containers using Docker's exec API.

func (*NativeExecHandler) ExecInContainer added in v0.19.0 

func (*NativeExecHandler) ExecInContainer(client DockerInterface, container *dockertypes.ContainerJSON, cmd []string, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool, resize <-chan term.Size, timeout time.Duration) error

type NsenterExecHandler added in v0.19.0 

type NsenterExecHandler struct{}

NsenterExecHandler executes commands in Docker containers using nsenter.

func (*NsenterExecHandler) ExecInContainer added in v0.19.0 

func (*NsenterExecHandler) ExecInContainer(client DockerInterface, container *dockertypes.ContainerJSON, cmd []string, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool, resize <-chan term.Size, timeout time.Duration) error

TODO should we support nsenter in a container, running with elevated privs and --pid=host?

type StreamOptions added in v1.3.0 

type StreamOptions struct {
	RawTerminal  bool
	InputStream  io.Reader
	OutputStream io.Writer
	ErrorStream  io.Writer
}

StreamOptions are the options used to configure the stream redirection

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