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

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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>
This commit is contained in:
Zhang Wei 2016-12-26 17:43:18 +08:00
parent 40dbbd3f9b
commit eb3a7c2329
3 changed files with 30 additions and 1 deletions
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4
daemon/stats.go
View file

@ -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

8
daemon/stats/collector.go
View file

@ -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)

19
integration-cli/docker_cli_stats_test.go
View file

@ -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")
}