Send "Name" and "ID" when stating stopped containers

When `docker stats` stopped containers, client will get empty stats data,
this commit will gurantee client always get "Name" and "ID" field, so
that it can format with `ID` and `Name` fields successfully.

Signed-off-by: Zhang Wei <zhangwei555@huawei.com>

daemon/stats.go

@@ -33,7 +33,9 @@ func (daemon *Daemon) ContainerStats(ctx context.Context, prefixOrName string, c
 
 	// If the container is either not running or restarting and requires no stream, return an empty stats.
 	if (!container.IsRunning() || container.IsRestarting()) && !config.Stream {
-		return json.NewEncoder(config.OutStream).Encode(&types.Stats{})
+		return json.NewEncoder(config.OutStream).Encode(&types.StatsJSON{
+			Name: container.Name,
+			ID:   container.ID})
 	}
 
 	outStream := config.OutStream

daemon/stats/collector.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/Sirupsen/logrus"
+	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/container"
 	"github.com/docker/docker/pkg/pubsub"
 )
@@ -84,7 +85,14 @@ func (s *Collector) Run() {
 			if err != nil {
 				if _, ok := err.(notRunningErr); !ok {
 					logrus.Errorf("collecting stats for %s: %v", pair.container.ID, err)
+					continue
 				}
+
+				// publish empty stats containing only name and ID if not running
+				pair.publisher.Publish(types.StatsJSON{
+					Name: pair.container.Name,
+					ID:   pair.container.ID,
+				})
 				continue
 			}
 			// FIXME: move to containerd on Linux (not Windows)

integration-cli/docker_cli_stats_test.go

@@ -157,3 +157,22 @@ func (s *DockerSuite) TestStatsAllNewContainersAdded(c *check.C) {
 		// ignore, done
 	}
 }
+
+func (s *DockerSuite) TestStatsFormatAll(c *check.C) {
+	// Windows does not support stats
+	testRequires(c, DaemonIsLinux)
+
+	dockerCmd(c, "run", "-d", "--name=RunningOne", "busybox", "top")
+	c.Assert(waitRun("RunningOne"), check.IsNil)
+	dockerCmd(c, "run", "-d", "--name=ExitedOne", "busybox", "top")
+	dockerCmd(c, "stop", "ExitedOne")
+	c.Assert(waitExited("ExitedOne", 5*time.Second), check.IsNil)
+
+	out, _ := dockerCmd(c, "stats", "--no-stream", "--format", "{{.Name}}")
+	c.Assert(out, checker.Contains, "RunningOne")
+	c.Assert(out, checker.Not(checker.Contains), "ExitedOne")
+
+	out, _ = dockerCmd(c, "stats", "--all", "--no-stream", "--format", "{{.Name}}")
+	c.Assert(out, checker.Contains, "RunningOne")
+	c.Assert(out, checker.Contains, "ExitedOne")
+}