| package main |
| |
| import ( |
| "bufio" |
| "os/exec" |
| "regexp" |
| "strings" |
| "time" |
| |
| "github.com/docker/docker/pkg/integration/checker" |
| "github.com/go-check/check" |
| ) |
| |
| func (s *DockerSuite) TestStatsNoStream(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "top") |
| id := strings.TrimSpace(out) |
| c.Assert(waitRun(id), checker.IsNil) |
| |
| statsCmd := exec.Command(dockerBinary, "stats", "--no-stream", id) |
| type output struct { |
| out []byte |
| err error |
| } |
| |
| ch := make(chan output) |
| go func() { |
| out, err := statsCmd.Output() |
| ch <- output{out, err} |
| }() |
| |
| select { |
| case outerr := <-ch: |
| c.Assert(outerr.err, checker.IsNil, check.Commentf("Error running stats: %v", outerr.err)) |
| c.Assert(string(outerr.out), checker.Contains, id) //running container wasn't present in output |
| case <-time.After(3 * time.Second): |
| statsCmd.Process.Kill() |
| c.Fatalf("stats did not return immediately when not streaming") |
| } |
| } |
| |
| func (s *DockerSuite) TestStatsContainerNotFound(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| |
| out, _, err := dockerCmdWithError("stats", "notfound") |
| c.Assert(err, checker.NotNil) |
| c.Assert(out, checker.Contains, "No such container: notfound", check.Commentf("Expected to fail on not found container stats, got %q instead", out)) |
| |
| out, _, err = dockerCmdWithError("stats", "--no-stream", "notfound") |
| c.Assert(err, checker.NotNil) |
| c.Assert(out, checker.Contains, "No such container: notfound", check.Commentf("Expected to fail on not found container stats with --no-stream, got %q instead", out)) |
| } |
| |
| func (s *DockerSuite) TestStatsAllRunningNoStream(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "top") |
| id1 := strings.TrimSpace(out)[:12] |
| c.Assert(waitRun(id1), check.IsNil) |
| out, _ = dockerCmd(c, "run", "-d", "busybox", "top") |
| id2 := strings.TrimSpace(out)[:12] |
| c.Assert(waitRun(id2), check.IsNil) |
| out, _ = dockerCmd(c, "run", "-d", "busybox", "top") |
| id3 := strings.TrimSpace(out)[:12] |
| c.Assert(waitRun(id3), check.IsNil) |
| dockerCmd(c, "stop", id3) |
| |
| out, _ = dockerCmd(c, "stats", "--no-stream") |
| if !strings.Contains(out, id1) || !strings.Contains(out, id2) { |
| c.Fatalf("Expected stats output to contain both %s and %s, got %s", id1, id2, out) |
| } |
| if strings.Contains(out, id3) { |
| c.Fatalf("Did not expect %s in stats, got %s", id3, out) |
| } |
| } |
| |
| func (s *DockerSuite) TestStatsAllNoStream(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "top") |
| id1 := strings.TrimSpace(out)[:12] |
| c.Assert(waitRun(id1), check.IsNil) |
| dockerCmd(c, "stop", id1) |
| out, _ = dockerCmd(c, "run", "-d", "busybox", "top") |
| id2 := strings.TrimSpace(out)[:12] |
| c.Assert(waitRun(id2), check.IsNil) |
| |
| out, _ = dockerCmd(c, "stats", "--all", "--no-stream") |
| if !strings.Contains(out, id1) || !strings.Contains(out, id2) { |
| c.Fatalf("Expected stats output to contain both %s and %s, got %s", id1, id2, out) |
| } |
| } |
| |
| func (s *DockerSuite) TestStatsAllNewContainersAdded(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| |
| id := make(chan string) |
| addedChan := make(chan struct{}) |
| |
| dockerCmd(c, "run", "-d", "busybox", "top") |
| statsCmd := exec.Command(dockerBinary, "stats") |
| stdout, err := statsCmd.StdoutPipe() |
| c.Assert(err, check.IsNil) |
| c.Assert(statsCmd.Start(), check.IsNil) |
| defer statsCmd.Process.Kill() |
| |
| go func() { |
| containerID := <-id |
| matchID := regexp.MustCompile(containerID) |
| |
| scanner := bufio.NewScanner(stdout) |
| for scanner.Scan() { |
| switch { |
| case matchID.MatchString(scanner.Text()): |
| close(addedChan) |
| } |
| } |
| }() |
| |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "top") |
| c.Assert(waitRun(strings.TrimSpace(out)), check.IsNil) |
| id <- strings.TrimSpace(out)[:12] |
| |
| select { |
| case <-time.After(5 * time.Second): |
| c.Fatal("failed to observe new container created added to stats") |
| case <-addedChan: |
| // ignore, done |
| } |
| } |