package containerd

import "github.com/containerd/containerd"

Index ¶

• Constants
• func GenerateSpec(opts ...SpecOpts) (*specs.Spec, error)
• func NewRemoteContainerStore(client containersapi.ContainersClient) containers.Store
• func WithExit(r *CheckpointTaskInfo) error
• func WithPullUnpack(client *Client, c *RemoteContext) error
• func WithRootFSDeletion(ctx context.Context, client *Client, c containers.Container) error
• func WithSchema1Conversion(client *Client, c *RemoteContext) error
• func WithStdinCloser(r *IOCloseInfo)
• func WithTTY(s *specs.Spec) error
• type CheckpointTaskInfo
• type CheckpointTaskOpts
• type Client
• func New(address string, opts ...ClientOpt) (*Client, error)
• func NewWithConn(conn *grpc.ClientConn, opts ...ClientOpt) (*Client, error)
• func (c *Client) Close() error
• func (c *Client) ContainerService() containers.Store
• func (c *Client) Containers(ctx context.Context, filters ...string) ([]Container, error)
• func (c *Client) ContentStore() content.Store
• func (c *Client) DiffService() diff.DiffService
• func (c *Client) EventService() eventsapi.EventsClient
• func (c *Client) GetImage(ctx context.Context, ref string) (Image, error)
• func (c *Client) HealthService() grpc_health_v1.HealthClient
• func (c *Client) ImageService() images.Store
• func (c *Client) IsServing(ctx context.Context) (bool, error)
• func (c *Client) ListImages(ctx context.Context) ([]Image, error)
• func (c *Client) LoadContainer(ctx context.Context, id string) (Container, error)
• func (c *Client) NamespaceService() namespacesapi.NamespacesClient
• func (c *Client) NewContainer(ctx context.Context, id string, opts ...NewContainerOpts) (Container, error)
• func (c *Client) Pull(ctx context.Context, ref string, opts ...RemoteOpts) (Image, error)
• func (c *Client) Push(ctx context.Context, ref string, desc ocispec.Descriptor, opts ...RemoteOpts) error
• func (c *Client) SnapshotService(snapshotterName string) snapshot.Snapshotter
• func (c *Client) TaskService() tasks.TasksClient
• func (c *Client) Version(ctx context.Context) (Version, error)
• func (c *Client) VersionService() versionservice.VersionClient
• type ClientOpt
• func WithDefaultNamespace(ns string) ClientOpt
• func WithDialOpts(opts []grpc.DialOption) ClientOpt
• type Container
• type DeleteOpts
• type FIFOSet
• func NewFifos() (*FIFOSet, error)
• type IO
• func Stdio() (*IO, error)
• func StdioTerminal() (*IO, error)
• func (i *IO) Cancel()
• func (i *IO) Close() error
• func (i *IO) Wait()
• type IOAttach
• func WithAttach(stdin io.Reader, stdout, stderr io.Writer) IOAttach
• type IOCloseInfo
• type IOCloserOpts
• type IOCreation
• func NewIO(stdin io.Reader, stdout, stderr io.Writer) IOCreation
• func NewIOWithTerminal(stdin io.Reader, stdout, stderr io.Writer, terminal bool) IOCreation
• type Image
• type NewContainerOpts
• func WithCheckpoint(desc v1.Descriptor, rootfsID string) NewContainerOpts
• func WithContainerLabels(labels map[string]string) NewContainerOpts
• func WithExistingRootFS(id string) NewContainerOpts
• func WithImage(i Image) NewContainerOpts
• func WithNewReadonlyRootFS(id string, i Image) NewContainerOpts
• func WithNewRootFS(id string, i Image) NewContainerOpts
• func WithRuntime(name string) NewContainerOpts
• func WithSnapshotter(name string) NewContainerOpts
• func WithSpec(spec *specs.Spec) NewContainerOpts
• type NewTaskOpts
• func WithTaskCheckpoint(desc v1.Descriptor) NewTaskOpts
• type Process
• type RemoteContext
• type RemoteOpts
• func WithImageHandler(h images.Handler) RemoteOpts
• func WithPullSnapshotter(snapshotterName string) RemoteOpts
• func WithResolver(resolver remotes.Resolver) RemoteOpts
• type SpecOpts
• func WithHostNamespace(ns specs.LinuxNamespaceType) SpecOpts
• func WithImageConfig(ctx context.Context, i Image) SpecOpts
• func WithLinuxNamespace(ns specs.LinuxNamespace) SpecOpts
• func WithProcessArgs(args ...string) SpecOpts
• type Task
• type TaskInfo
• type TaskStatus
• type UpdateTaskInfo
• type UpdateTaskOpts
• func WithResources(resources *specs.LinuxResources) UpdateTaskOpts
• type Version

Constants ¶

const DefaultAddress = "/run/containerd/containerd.sock"

DefaultAddress is the default unix socket address

const UnknownExitStatus = 255

Functions ¶

func GenerateSpec ¶

func GenerateSpec(opts ...SpecOpts) (*specs.Spec, error)

GenerateSpec will generate a default spec from the provided image for use as a containerd container

func NewRemoteContainerStore ¶

func NewRemoteContainerStore(client containersapi.ContainersClient) containers.Store

func WithExit ¶

func WithExit(r *CheckpointTaskInfo) error

func WithPullUnpack ¶

func WithPullUnpack(client *Client, c *RemoteContext) error

WithPullUnpack is used to unpack an image after pull. This uses the snapshotter, content store, and diff service configured for the client.

func WithRootFSDeletion ¶

func WithRootFSDeletion(ctx context.Context, client *Client, c containers.Container) error

WithRootFSDeletion deletes the rootfs allocated for the container

func WithSchema1Conversion ¶

func WithSchema1Conversion(client *Client, c *RemoteContext) error

WithSchema1Conversion is used to convert Docker registry schema 1 manifests to oci manifests on pull. Without this option schema 1 manifests will return a not supported error.

func WithStdinCloser ¶

func WithStdinCloser(r *IOCloseInfo)

func WithTTY ¶

func WithTTY(s *specs.Spec) error

Types ¶

type CheckpointTaskInfo ¶

type CheckpointTaskInfo struct {
	ParentCheckpoint digest.Digest
	Options          interface{}
}

type CheckpointTaskOpts ¶

type CheckpointTaskOpts func(*CheckpointTaskInfo) error

type Client ¶

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

Client is the client to interact with containerd and its various services using a uniform interface

func New ¶

func New(address string, opts ...ClientOpt) (*Client, error)

New returns a new containerd client that is connected to the containerd instance provided by address

func NewWithConn ¶

func NewWithConn(conn *grpc.ClientConn, opts ...ClientOpt) (*Client, error)

NewWithConn returns a new containerd client that is connected to the containerd instance provided by the connection

func (*Client) Close ¶

func (c *Client) Close() error

Close closes the clients connection to containerd

func (*Client) ContainerService ¶

func (c *Client) ContainerService() containers.Store

func (*Client) Containers ¶

func (c *Client) Containers(ctx context.Context, filters ...string) ([]Container, error)

Containers returns all containers created in containerd

func (*Client) ContentStore ¶

func (c *Client) ContentStore() content.Store

func (*Client) DiffService ¶

func (c *Client) DiffService() diff.DiffService

func (*Client) EventService ¶

func (c *Client) EventService() eventsapi.EventsClient

func (*Client) GetImage ¶

func (c *Client) GetImage(ctx context.Context, ref string) (Image, error)

GetImage returns an existing image

func (*Client) HealthService ¶

func (c *Client) HealthService() grpc_health_v1.HealthClient

func (*Client) ImageService ¶

func (c *Client) ImageService() images.Store

func (*Client) IsServing ¶

func (c *Client) IsServing(ctx context.Context) (bool, error)

func (*Client) ListImages ¶

func (c *Client) ListImages(ctx context.Context) ([]Image, error)

ListImages returns all existing images

func (*Client) LoadContainer ¶

func (c *Client) LoadContainer(ctx context.Context, id string) (Container, error)

func (*Client) NamespaceService ¶

func (c *Client) NamespaceService() namespacesapi.NamespacesClient

func (*Client) NewContainer ¶

func (c *Client) NewContainer(ctx context.Context, id string, opts ...NewContainerOpts) (Container, error)

NewContainer will create a new container in container with the provided id the id must be unique within the namespace

func (*Client) Pull ¶

func (c *Client) Pull(ctx context.Context, ref string, opts ...RemoteOpts) (Image, error)

func (*Client) Push ¶

func (c *Client) Push(ctx context.Context, ref string, desc ocispec.Descriptor, opts ...RemoteOpts) error

func (*Client) SnapshotService ¶

func (c *Client) SnapshotService(snapshotterName string) snapshot.Snapshotter

func (*Client) TaskService ¶

func (c *Client) TaskService() tasks.TasksClient

func (*Client) Version ¶

func (c *Client) Version(ctx context.Context) (Version, error)

func (*Client) VersionService ¶

func (c *Client) VersionService() versionservice.VersionClient

type ClientOpt ¶

type ClientOpt func(c *clientOpts) error

func WithDefaultNamespace ¶

func WithDefaultNamespace(ns string) ClientOpt

func WithDialOpts ¶

func WithDialOpts(opts []grpc.DialOption) ClientOpt

WithDialOpts allows grpc.DialOptions to be set on the connection

type Container ¶

type Container interface {
	ID() string
	Info() containers.Container
	Delete(context.Context, ...DeleteOpts) error
	NewTask(context.Context, IOCreation, ...NewTaskOpts) (Task, error)
	Spec() (*specs.Spec, error)
	Task(context.Context, IOAttach) (Task, error)
	Image(context.Context) (Image, error)
	Labels(context.Context) (map[string]string, error)
	SetLabels(context.Context, map[string]string) (map[string]string, error)
}

type DeleteOpts ¶

type DeleteOpts func(context.Context, *Client, containers.Container) error

type FIFOSet ¶

type FIFOSet struct {
	// Dir is the directory holding the task fifos
	Dir          string
	In, Out, Err string
	Terminal     bool
}

func NewFifos ¶

func NewFifos() (*FIFOSet, error)

NewFifos returns a new set of fifos for the task

type IO ¶

type IO struct {
	Terminal bool
	Stdin    string
	Stdout   string
	Stderr   string
	// contains filtered or unexported fields
}

func Stdio ¶

func Stdio() (*IO, error)

Stdio returns an IO implementation to be used for a task that outputs the container's IO as the current processes Stdio

func StdioTerminal ¶

func StdioTerminal() (*IO, error)

StdioTerminal will setup the IO for the task to use a terminal

func (*IO) Cancel ¶

func (i *IO) Cancel()

func (*IO) Close ¶

func (i *IO) Close() error

func (*IO) Wait ¶

func (i *IO) Wait()

type IOAttach ¶

type IOAttach func(*FIFOSet) (*IO, error)

func WithAttach ¶

func WithAttach(stdin io.Reader, stdout, stderr io.Writer) IOAttach

type IOCloseInfo ¶

type IOCloseInfo struct {
	Stdin bool
}

type IOCloserOpts ¶

type IOCloserOpts func(*IOCloseInfo)

type IOCreation ¶

type IOCreation func() (*IO, error)

func NewIO ¶

func NewIO(stdin io.Reader, stdout, stderr io.Writer) IOCreation

func NewIOWithTerminal ¶

func NewIOWithTerminal(stdin io.Reader, stdout, stderr io.Writer, terminal bool) IOCreation

type Image ¶

type Image interface {
	Name() string
	Target() ocispec.Descriptor

	Unpack(context.Context, string) error
}

type NewContainerOpts ¶

type NewContainerOpts func(ctx context.Context, client *Client, c *containers.Container) error

func WithCheckpoint ¶

func WithCheckpoint(desc v1.Descriptor, rootfsID string) NewContainerOpts

func WithContainerLabels ¶

func WithContainerLabels(labels map[string]string) NewContainerOpts

WithContainerLabels adds the provided labels to the container

func WithExistingRootFS ¶

func WithExistingRootFS(id string) NewContainerOpts

WithExistingRootFS uses an existing root filesystem for the container

func WithImage ¶

func WithImage(i Image) NewContainerOpts

func WithNewReadonlyRootFS ¶

func WithNewReadonlyRootFS(id string, i Image) NewContainerOpts

WithNewReadonlyRootFS allocates a new snapshot to be used by the container as the root filesystem in read-only mode

func WithNewRootFS ¶

func WithNewRootFS(id string, i Image) NewContainerOpts

WithNewRootFS allocates a new snapshot to be used by the container as the root filesystem in read-write mode

func WithRuntime ¶

func WithRuntime(name string) NewContainerOpts

WithRuntime allows a user to specify the runtime name and additional options that should be used to create tasks for the container

func WithSnapshotter ¶

func WithSnapshotter(name string) NewContainerOpts

func WithSpec ¶

func WithSpec(spec *specs.Spec) NewContainerOpts

type NewTaskOpts ¶

type NewTaskOpts func(context.Context, *Client, *TaskInfo) error

func WithTaskCheckpoint ¶

func WithTaskCheckpoint(desc v1.Descriptor) NewTaskOpts

type Process ¶

type Process interface {
	Pid() uint32
	Start(context.Context) error
	Delete(context.Context) (uint32, error)
	Kill(context.Context, syscall.Signal) error
	Wait(context.Context) (uint32, error)
	CloseIO(context.Context, ...IOCloserOpts) error
	Resize(ctx context.Context, w, h uint32) error
	IO() *IO
}

type RemoteContext ¶

type RemoteContext struct {
	// Resolver is used to resolve names to objects, fetchers, and pushers.
	// If no resolver is provided, defaults to Docker registry resolver.
	Resolver remotes.Resolver

	// Unpack is done after an image is pulled to extract into a snapshotter.
	// If an image is not unpacked on pull, it can be unpacked any time
	// afterwards. Unpacking is required to run an image.
	Unpack bool

	// Snapshotter used for unpacking
	Snapshotter string

	// BaseHandlers are a set of handlers which get are called on dispatch.
	// These handlers always get called before any operation specific
	// handlers.
	BaseHandlers []images.Handler

	// ConvertSchema1 is whether to convert Docker registry schema 1
	// manifests. If this option is false then any image which resolves
	// to schema 1 will return an error since schema 1 is not supported.
	ConvertSchema1 bool
}

RemoteContext is used to configure object resolutions and transfers with remote content stores and image providers.

type RemoteOpts ¶

type RemoteOpts func(*Client, *RemoteContext) error

func WithImageHandler ¶

func WithImageHandler(h images.Handler) RemoteOpts

WithImageHandler adds a base handler to be called on dispatch.

func WithPullSnapshotter ¶

func WithPullSnapshotter(snapshotterName string) RemoteOpts

WithPullSnapshotter specifies snapshotter name used for unpacking

func WithResolver ¶

func WithResolver(resolver remotes.Resolver) RemoteOpts

WithResolver specifies the resolver to use.

type SpecOpts ¶

type SpecOpts func(s *specs.Spec) error

func WithHostNamespace ¶

func WithHostNamespace(ns specs.LinuxNamespaceType) SpecOpts

func WithImageConfig ¶

func WithImageConfig(ctx context.Context, i Image) SpecOpts

func WithLinuxNamespace ¶

func WithLinuxNamespace(ns specs.LinuxNamespace) SpecOpts

WithLinuxNamespace uses the passed in namespace for the spec. If a namespace of the same type already exists in the spec, the existing namespace is replaced by the one provided.

func WithProcessArgs ¶

func WithProcessArgs(args ...string) SpecOpts

type Task ¶

type Task interface {
	Pid() uint32
	Delete(context.Context) (uint32, error)
	Kill(context.Context, syscall.Signal) error
	Pause(context.Context) error
	Resume(context.Context) error
	Start(context.Context) error
	Status(context.Context) (TaskStatus, error)
	Wait(context.Context) (uint32, error)
	Exec(context.Context, string, *specs.Process, IOCreation) (Process, error)
	Pids(context.Context) ([]uint32, error)
	CloseIO(context.Context, ...IOCloserOpts) error
	Resize(ctx context.Context, w, h uint32) error
	IO() *IO
	Checkpoint(context.Context, ...CheckpointTaskOpts) (v1.Descriptor, error)
	Update(context.Context, ...UpdateTaskOpts) error
}

type TaskInfo ¶

type TaskInfo struct {
	Checkpoint *types.Descriptor
	Options    interface{}
}

type TaskStatus ¶

type TaskStatus string

const (
	Running TaskStatus = "running"
	Created TaskStatus = "created"
	Stopped TaskStatus = "stopped"
	Paused  TaskStatus = "paused"
	Pausing TaskStatus = "pausing"
)

type UpdateTaskInfo ¶

type UpdateTaskInfo struct {
	Resources interface{}
}

type UpdateTaskOpts ¶

type UpdateTaskOpts func(context.Context, *Client, *UpdateTaskInfo) error

func WithResources ¶

func WithResources(resources *specs.LinuxResources) UpdateTaskOpts

type Version ¶

type Version struct {
	Version  string
	Revision string
}

Source Files ¶

client.go client_unix.go container.go container_unix.go containerstore.go grpc.go image.go io.go io_unix.go process.go spec.go spec_unix.go task.go

Directories ¶