Merge pull request #807 from estesp/add-pause-resume

Add pause/resume implementation

cmd/ctr/main.go

@@ -59,6 +59,8 @@ containerd client
 		killCommand,
 		pprofCommand,
 		execCommand,
+		pauseCommand,
+		resumeCommand,
 	}
 	app.Commands = append(app.Commands, extraCmds...)
 	app.Before = func(context *cli.Context) error {

cmd/ctr/pause.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	gocontext "context"
+	"errors"
+
+	"github.com/containerd/containerd/api/services/execution"
+	"github.com/urfave/cli"
+)
+
+var pauseCommand = cli.Command{
+	Name:      "pause",
+	Usage:     "pause an existing container",
+	ArgsUsage: "CONTAINER",
+	Action: func(context *cli.Context) error {
+		containers, err := getExecutionService(context)
+		if err != nil {
+			return err
+		}
+		id := context.Args().First()
+		if id == "" {
+			return errors.New("container id must be provided")
+		}
+		_, err = containers.Pause(gocontext.Background(), &execution.PauseRequest{
+			ID: id,
+		})
+		return err
+	},
+}

cmd/ctr/resume.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	gocontext "context"
+	"errors"
+
+	"github.com/containerd/containerd/api/services/execution"
+	"github.com/urfave/cli"
+)
+
+var resumeCommand = cli.Command{
+	Name:      "resume",
+	Usage:     "resume a paused container",
+	ArgsUsage: "CONTAINER",
+	Action: func(context *cli.Context) error {
+		containers, err := getExecutionService(context)
+		if err != nil {
+			return err
+		}
+		id := context.Args().First()
+		if id == "" {
+			return errors.New("container id must be provided")
+		}
+		_, err = containers.Resume(gocontext.Background(), &execution.ResumeRequest{
+			ID: id,
+		})
+		return err
+	},
+}