| package main |
| |
| import ( |
| "bufio" |
| "os/exec" |
| "regexp" |
| "strings" |
| "testing" |
| "time" |
| |
| "github.com/docker/docker/integration-cli/cli" |
| "gotest.tools/v3/assert" |
| is "gotest.tools/v3/assert/cmp" |
| ) |
| |
| func (s *DockerSuite) TestStatsNoStream(c *testing.T) { |
| // Windows does not support stats |
| testRequires(c, DaemonIsLinux) |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "top") |
| id := strings.TrimSpace(out) |
| assert.NilError(c, waitRun(id)) |
| |
| statsCmd := exec.Command(dockerBinary, "stats", "--no-stream", id) |
| type output struct { |
| out []byte |
| err error |
| } |
| |
| ch := make(chan output, 1) |
| go func() { |
| out, err := statsCmd.Output() |
| ch <- output{out, err} |
| }() |
| |
| select { |
| case outerr := <-ch: |
| assert.NilError(c, outerr.err, "Error running stats: %v", outerr.err) |
| assert.Assert(c, is.Contains(string(outerr.out), id[:12]), "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 *testing.T) { |
| // Windows does not support stats |
| testRequires(c, DaemonIsLinux) |
| |
| out, _, err := dockerCmdWithError("stats", "notfound") |
| assert.ErrorContains(c, err, "") |
| assert.Assert(c, is.Contains(out, "No such container: notfound"), "Expected to fail on not found container stats, got %q instead", out) |
| |
| out, _, err = dockerCmdWithError("stats", "--no-stream", "notfound") |
| assert.ErrorContains(c, err, "") |
| assert.Assert(c, is.Contains(out, "No such container: notfound"), "Expected to fail on not found container stats with --no-stream, got %q instead", out) |
| } |
| |
| func (s *DockerSuite) TestStatsAllRunningNoStream(c *testing.T) { |
| // Windows does not support stats |
| testRequires(c, DaemonIsLinux) |
| |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "top") |
| id1 := strings.TrimSpace(out)[:12] |
| assert.NilError(c, waitRun(id1)) |
| out, _ = dockerCmd(c, "run", "-d", "busybox", "top") |
| id2 := strings.TrimSpace(out)[:12] |
| assert.NilError(c, waitRun(id2)) |
| out, _ = dockerCmd(c, "run", "-d", "busybox", "top") |
| id3 := strings.TrimSpace(out)[:12] |
| assert.NilError(c, waitRun(id3)) |
| 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) |
| } |
| |
| // check output contains real data, but not all zeros |
| reg, _ := regexp.Compile("[1-9]+") |
| // split output with "\n", outLines[1] is id2's output |
| // outLines[2] is id1's output |
| outLines := strings.Split(out, "\n") |
| // check stat result of id2 contains real data |
| realData := reg.Find([]byte(outLines[1][12:])) |
| assert.Assert(c, realData != nil, "stat result are empty: %s", out) |
| // check stat result of id1 contains real data |
| realData = reg.Find([]byte(outLines[2][12:])) |
| assert.Assert(c, realData != nil, "stat result are empty: %s", out) |
| } |
| |
| func (s *DockerSuite) TestStatsAllNoStream(c *testing.T) { |
| // Windows does not support stats |
| testRequires(c, DaemonIsLinux) |
| |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "top") |
| id1 := strings.TrimSpace(out)[:12] |
| assert.NilError(c, waitRun(id1)) |
| dockerCmd(c, "stop", id1) |
| out, _ = dockerCmd(c, "run", "-d", "busybox", "top") |
| id2 := strings.TrimSpace(out)[:12] |
| assert.NilError(c, waitRun(id2)) |
| |
| 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) |
| } |
| |
| // check output contains real data, but not all zeros |
| reg, _ := regexp.Compile("[1-9]+") |
| // split output with "\n", outLines[1] is id2's output |
| outLines := strings.Split(out, "\n") |
| // check stat result of id2 contains real data |
| realData := reg.Find([]byte(outLines[1][12:])) |
| assert.Assert(c, realData != nil, "stat result of %s is empty: %s", id2, out) |
| |
| // check stat result of id1 contains all zero |
| realData = reg.Find([]byte(outLines[2][12:])) |
| assert.Assert(c, realData == nil, "stat result of %s should be empty : %s", id1, out) |
| } |
| |
| func (s *DockerSuite) TestStatsAllNewContainersAdded(c *testing.T) { |
| // Windows does not support stats |
| testRequires(c, DaemonIsLinux) |
| |
| id := make(chan string) |
| addedChan := make(chan struct{}) |
| |
| runSleepingContainer(c, "-d") |
| statsCmd := exec.Command(dockerBinary, "stats") |
| stdout, err := statsCmd.StdoutPipe() |
| assert.NilError(c, err) |
| assert.NilError(c, statsCmd.Start()) |
| go statsCmd.Wait() |
| 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) |
| return |
| } |
| } |
| }() |
| |
| out := runSleepingContainer(c, "-d") |
| assert.NilError(c, waitRun(strings.TrimSpace(out))) |
| id <- strings.TrimSpace(out)[:12] |
| |
| select { |
| case <-time.After(30 * time.Second): |
| c.Fatal("failed to observe new container created added to stats") |
| case <-addedChan: |
| // ignore, done |
| } |
| } |
| |
| func (s *DockerSuite) TestStatsFormatAll(c *testing.T) { |
| // Windows does not support stats |
| testRequires(c, DaemonIsLinux) |
| |
| cli.DockerCmd(c, "run", "-d", "--name=RunningOne", "busybox", "top") |
| cli.WaitRun(c, "RunningOne") |
| cli.DockerCmd(c, "run", "-d", "--name=ExitedOne", "busybox", "top") |
| cli.DockerCmd(c, "stop", "ExitedOne") |
| cli.WaitExited(c, "ExitedOne", 5*time.Second) |
| |
| out := cli.DockerCmd(c, "stats", "--no-stream", "--format", "{{.Name}}").Combined() |
| assert.Assert(c, is.Contains(out, "RunningOne")) |
| assert.Assert(c, !strings.Contains(out, "ExitedOne")) |
| |
| out = cli.DockerCmd(c, "stats", "--all", "--no-stream", "--format", "{{.Name}}").Combined() |
| assert.Assert(c, is.Contains(out, "RunningOne")) |
| assert.Assert(c, is.Contains(out, "ExitedOne")) |
| } |