Move Container and runtime to plugin pkg

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

plugin/container.go

@@ -0,0 +1,67 @@
+package plugin
+
+import "context"
+
+type ContainerInfo struct {
+	ID      string
+	Runtime string
+}
+
+type Container interface {
+	// Information of the container
+	Info() ContainerInfo
+	// Start the container's user defined process
+	Start(context.Context) error
+	// State returns the container's state
+	State(context.Context) (State, error)
+	// Pause pauses the container process
+	Pause(context.Context) error
+	// Resume unpauses the container process
+	Resume(context.Context) error
+	// Kill signals a container
+	Kill(context.Context, uint32, bool) error
+	// Exec adds a process into the container
+	Exec(context.Context, ExecOpts) (Process, error)
+	// Pty resizes the processes pty/console
+	Pty(context.Context, uint32, ConsoleSize) error
+	// CloseStdin closes the processes stdin
+	CloseStdin(context.Context, uint32) error
+}
+
+type LinuxContainer interface {
+	Container
+}
+
+type ExecOpts struct {
+	Spec []byte
+	IO   IO
+}
+
+type Process interface {
+	// State returns the process state
+	State(context.Context) (State, error)
+	// Kill signals a container
+	Kill(context.Context, uint32, bool) error
+}
+
+type ConsoleSize struct {
+	Width  uint32
+	Height uint32
+}
+
+type Status int
+
+const (
+	CreatedStatus Status = iota + 1
+	RunningStatus
+	StoppedStatus
+	DeletedStatus
+	PausedStatus
+)
+
+type State interface {
+	// Status is the current status of the container
+	Status() Status
+	// Pid is the main process id for the container
+	Pid() uint32
+}

plugin/monitor.go

@@ -5,9 +5,9 @@ import "github.com/containerd/containerd"
 // ContainerMonitor provides an interface for monitoring of containers within containerd
 type ContainerMonitor interface {
 	// Monitor adds the provided container to the monitor
-	Monitor(containerd.Container) error
+	Monitor(Container) error
 	// Stop stops and removes the provided container from the monitor
-	Stop(containerd.Container) error
+	Stop(Container) error
 	// Events emits events from the monitor
 	Events(chan<- *containerd.Event)
 }
@@ -25,11 +25,11 @@ func NewNoopMonitor() ContainerMonitor {
 type noopContainerMonitor struct {
 }
 
-func (mm *noopContainerMonitor) Monitor(c containerd.Container) error {
+func (mm *noopContainerMonitor) Monitor(c Container) error {
 	return nil
 }
 
-func (mm *noopContainerMonitor) Stop(c containerd.Container) error {
+func (mm *noopContainerMonitor) Stop(c Container) error {
 	return nil
 }
 
@@ -40,7 +40,7 @@ type multiContainerMonitor struct {
 	monitors []ContainerMonitor
 }
 
-func (mm *multiContainerMonitor) Monitor(c containerd.Container) error {
+func (mm *multiContainerMonitor) Monitor(c Container) error {
 	for _, m := range mm.monitors {
 		if err := m.Monitor(c); err != nil {
 			return err
@@ -49,7 +49,7 @@ func (mm *multiContainerMonitor) Monitor(c containerd.Container) error {
 	return nil
 }
 
-func (mm *multiContainerMonitor) Stop(c containerd.Container) error {
+func (mm *multiContainerMonitor) Stop(c Container) error {
 	for _, m := range mm.monitors {
 		if err := m.Stop(c); err != nil {
 			return err

plugin/plugin.go

@@ -5,7 +5,6 @@ import (
 	"sync"
 
 	"github.com/boltdb/bolt"
-	"github.com/containerd/containerd"
 	"github.com/containerd/containerd/content"
 	"github.com/containerd/containerd/snapshot"
 
@@ -32,7 +31,7 @@ type Registration struct {
 type InitContext struct {
 	Root        string
 	State       string
-	Runtimes    map[string]containerd.Runtime
+	Runtimes    map[string]Runtime
 	Content     content.Store
 	Meta        *bolt.DB
 	Snapshotter snapshot.Snapshotter

plugin/runtime.go

@@ -0,0 +1,42 @@
+package plugin
+
+import (
+	"context"
+	"time"
+
+	"github.com/containerd/containerd"
+)
+
+type IO struct {
+	Stdin    string
+	Stdout   string
+	Stderr   string
+	Terminal bool
+}
+
+type CreateOpts struct {
+	// Spec is the OCI runtime spec
+	Spec []byte
+	// Rootfs mounts to perform to gain access to the container's filesystem
+	Rootfs []containerd.Mount
+	// IO for the container's main process
+	IO IO
+}
+
+type Exit struct {
+	Status    uint32
+	Timestamp time.Time
+}
+
+// Runtime is responsible for the creation of containers for a certain platform,
+// arch, or custom usage.
+type Runtime interface {
+	// Create creates a container with the provided id and options
+	Create(ctx context.Context, id string, opts CreateOpts) (Container, error)
+	// Containers returns all the current containers for the runtime
+	Containers(context.Context) ([]Container, error)
+	// Delete removes the container in the runtime
+	Delete(context.Context, Container) (*Exit, error)
+	// Events returns events for the runtime and all containers created by the runtime
+	Events(context.Context) <-chan *containerd.Event
+}