ctr: add commands: list and inspect

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>

cmd/ctr/inspect.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	gocontext "context"
+	"fmt"
+
+	"github.com/davecgh/go-spew/spew"
+	"github.com/docker/containerd/api/execution"
+	"github.com/urfave/cli"
+)
+
+var inspectCommand = cli.Command{
+	Name:  "inspect",
+	Usage: "inspect a container",
+	Action: func(context *cli.Context) error {
+		executionService, err := getExecutionService(context)
+		if err != nil {
+			return err
+		}
+		id := context.Args().First()
+		if id == "" {
+			return fmt.Errorf("container id must be provided")
+		}
+		getResponse, err := executionService.Get(gocontext.Background(),
+			&execution.GetContainerRequest{ID: id})
+		if err != nil {
+			return err
+		}
+		listProcResponse, err := executionService.ListProcesses(gocontext.Background(),
+			&execution.ListProcessesRequest{ID: id})
+		if err != nil {
+			return err
+		}
+		dumper := spew.NewDefaultConfig()
+		dumper.Indent = "\t"
+		dumper.DisableMethods = true
+		dumper.DisablePointerAddresses = true
+		dumper.Dump(getResponse, listProcResponse)
+		return nil
+	},
+}

cmd/ctr/list.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	gocontext "context"
+	"fmt"
+
+	"github.com/docker/containerd/api/execution"
+	"github.com/urfave/cli"
+)
+
+var listCommand = cli.Command{
+	Name:  "list",
+	Usage: "list containers",
+	Action: func(context *cli.Context) error {
+		executionService, err := getExecutionService(context)
+		if err != nil {
+			return err
+		}
+		listResponse, err := executionService.List(gocontext.Background(), &execution.ListContainersRequest{
+			Owner: []string{},
+		})
+		if err != nil {
+			return err
+		}
+		fmt.Printf("ID\tSTATUS\tPROCS\tBUNDLE\n")
+		for _, c := range listResponse.Containers {
+			listProcResponse, err := executionService.ListProcesses(gocontext.Background(),
+				&execution.ListProcessesRequest{ID: c.ID})
+			if err != nil {
+				return err
+			}
+			fmt.Printf("%s\t%s\t%d\t%s\n",
+				c.ID,
+				c.Status,
+				len(listProcResponse.Processes),
+				c.BundlePath,
+			)
+		}
+		return nil
+	},
+}

cmd/ctr/main.go

@@ -38,6 +38,8 @@ containerd client
 		execCommand,
 		eventsCommand,
 		deleteCommand,
+		listCommand,
+		inspectCommand,
 	}
 	app.Before = func(context *cli.Context) error {
 		if context.GlobalBool("debug") {

vendor.conf

@@ -43,7 +43,7 @@ github.com/Sirupsen/logrus v0.11.0
 github.com/stevvooe/go-btrfs 029908fedf190147f3f673b0db7c836f83a6a6be
 # testify go testing support; latest release as of 12/16/2016
 github.com/stretchr/testify v1.1.4
-# go-spew (required by testify); latest release as of 1/12/2017
+# go-spew (required by testify, and also by ctr); latest release as of 1/12/2017
 github.com/davecgh/go-spew v1.1.0
 # go-difflib (required by testify); latest release as of 1/12/2017
 github.com/pmezard/go-difflib v1.0.0