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