package libcontainerd import ( "io" "github.com/opencontainers/runtime-spec/specs-go" "golang.org/x/net/context" ) // State constants used in state change reporting. const ( StateStart = "start-container" StatePause = "pause" StateResume = "resume" StateExit = "exit" StateRestart = "restart" StateRestore = "restore" StateStartProcess = "start-process" StateExitProcess = "exit-process" StateOOM = "oom" // fake state stateLive = "live" ) // CommonStateInfo contains the state info common to all platforms. type CommonStateInfo struct { // FIXME: event? State string Pid uint32 ExitCode uint32 ProcessID string } // Backend defines callbacks that the client of the library needs to implement. type Backend interface { StateChanged(containerID string, state StateInfo) error AttachStreams(processFriendlyName string, io IOPipe) error } // Client provides access to containerd features. type Client interface { Create(containerID string, checkpoint string, checkpointDir string, spec specs.Spec, options ...CreateOption) error Signal(containerID string, sig int) error SignalProcess(containerID string, processFriendlyName string, sig int) error AddProcess(ctx context.Context, containerID, processFriendlyName string, process Process) error Resize(containerID, processFriendlyName string, width, height int) error Pause(containerID string) error Resume(containerID string) error Restore(containerID string, options ...CreateOption) error Stats(containerID string) (*Stats, error) GetPidsForContainer(containerID string) ([]int, error) Summary(containerID string) ([]Summary, error) UpdateResources(containerID string, resources Resources) error CreateCheckpoint(containerID string, checkpointID string, checkpointDir string, exit bool) error DeleteCheckpoint(containerID string, checkpointID string, checkpointDir string) error ListCheckpoints(containerID string, checkpointDir string) (*Checkpoints, error) } // CreateOption allows to configure parameters of container creation. type CreateOption interface { Apply(interface{}) error } // IOPipe contains the stdio streams. type IOPipe struct { Stdin io.WriteCloser Stdout io.Reader Stderr io.Reader Terminal bool // Whether stderr is connected on Windows }