1 files changed, 75 insertions, 0 deletions
diff --git a/libcontainerd/types.go b/libcontainerd/types.go
new file mode 100644
index 0000000..c7ade6b
--- /dev/null
+++ b/libcontainerd/types.go
@@ -0,0 +1,75 @@
+package libcontainerd
+
+import (
+	"io"
+
+	containerd "github.com/containerd/containerd/api/grpc/types"
+	"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"
+	StateRestore     = "restore"
+	StateExitProcess = "exit-process"
+	StateOOM         = "oom" // fake state
+)
+
+// 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
+}
+
+// Client provides access to containerd features.
+type Client interface {
+	GetServerVersion(ctx context.Context) (*ServerVersion, error)
+	Create(containerID string, checkpoint string, checkpointDir string, spec specs.Spec, attachStdio StdioCallback, 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, attachStdio StdioCallback) (int, error)
+	Resize(containerID, processFriendlyName string, width, height int) error
+	Pause(containerID string) error
+	Resume(containerID string) error
+	Restore(containerID string, attachStdio StdioCallback, 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
+}
+
+// StdioCallback is called to connect a container or process stdio.
+type StdioCallback func(IOPipe) error
+
+// IOPipe contains the stdio streams.
+type IOPipe struct {
+	Stdin    io.WriteCloser
+	Stdout   io.ReadCloser
+	Stderr   io.ReadCloser
+	Terminal bool // Whether stderr is connected on Windows
+}
+
+// ServerVersion contains version information as retrieved from the
+// server
+type ServerVersion struct {
+	containerd.GetServerVersionResponse
+}