package main import ( "bufio" "fmt" "os/exec" "regexp" "strconv" "strings" "sync" "time" "github.com/go-check/check" ) func (s *DockerSuite) TestEventsTimestampFormats(c *check.C) { image := "busybox" // Start stopwatch, generate an event time.Sleep(time.Second) // so that we don't grab events from previous test occured in the same second start := daemonTime(c) time.Sleep(time.Second) // remote API precision is only a second, wait a while before creating an event dockerCmd(c, "tag", image, "timestamptest:1") dockerCmd(c, "rmi", "timestamptest:1") time.Sleep(time.Second) // so that until > since end := daemonTime(c) // List of available time formats to --since unixTs := func(t time.Time) string { return fmt.Sprintf("%v", t.Unix()) } rfc3339 := func(t time.Time) string { return t.Format(time.RFC3339) } // --since=$start must contain only the 'untag' event for _, f := range []func(time.Time) string{unixTs, rfc3339} { since, until := f(start), f(end) cmd := exec.Command(dockerBinary, "events", "--since="+since, "--until="+until) out, _, err := runCommandWithOutput(cmd) if err != nil { c.Fatalf("docker events cmd failed: %v\nout=%s", err, out) } events := strings.Split(strings.TrimSpace(out), "\n") if len(events) != 2 { c.Fatalf("unexpected events, was expecting only 2 events tag/untag (since=%s, until=%s) out=%s", since, until, out) } if !strings.Contains(out, "untag") { c.Fatalf("expected 'untag' event not found (since=%s, until=%s) out=%s", since, until, out) } } } func (s *DockerSuite) TestEventsUntag(c *check.C) { image := "busybox" dockerCmd(c, "tag", image, "utest:tag1") dockerCmd(c, "tag", image, "utest:tag2") dockerCmd(c, "rmi", "utest:tag1") dockerCmd(c, "rmi", "utest:tag2") eventsCmd := exec.Command(dockerBinary, "events", "--since=1") out, exitCode, _, err := runCommandWithOutputForDuration(eventsCmd, time.Duration(time.Millisecond*200)) if exitCode != 0 || err != nil { c.Fatalf("Failed to get events - exit code %d: %s", exitCode, err) } events := strings.Split(out, "\n") nEvents := len(events) // The last element after the split above will be an empty string, so we // get the two elements before the last, which are the untags we're // looking for. for _, v := range events[nEvents-3 : nEvents-1] { if !strings.Contains(v, "untag") { c.Fatalf("event should be untag, not %#v", v) } } } func (s *DockerSuite) TestEventsContainerFailStartDie(c *check.C) { out, _ := dockerCmd(c, "images", "-q") image := strings.Split(out, "\n")[0] eventsCmd := exec.Command(dockerBinary, "run", "--name", "testeventdie", image, "blerg") _, _, err := runCommandWithOutput(eventsCmd) if err == nil { c.Fatalf("Container run with command blerg should have failed, but it did not") } eventsCmd = exec.Command(dockerBinary, "events", "--since=0", fmt.Sprintf("--until=%d", daemonTime(c).Unix())) out, _, _ = runCommandWithOutput(eventsCmd) events := strings.Split(out, "\n") if len(events) <= 1 { c.Fatalf("Missing expected event") } startEvent := strings.Fields(events[len(events)-3]) dieEvent := strings.Fields(events[len(events)-2]) if startEvent[len(startEvent)-1] != "start" { c.Fatalf("event should be start, not %#v", startEvent) } if dieEvent[len(dieEvent)-1] != "die" { c.Fatalf("event should be die, not %#v", dieEvent) } } func (s *DockerSuite) TestEventsLimit(c *check.C) { var waitGroup sync.WaitGroup errChan := make(chan error, 17) args := []string{"run", "--rm", "busybox", "true"} for i := 0; i < 17; i++ { waitGroup.Add(1) go func() { defer waitGroup.Done() errChan <- exec.Command(dockerBinary, args...).Run() }() } waitGroup.Wait() close(errChan) for err := range errChan { if err != nil { c.Fatalf("%q failed with error: %v", strings.Join(args, " "), err) } } eventsCmd := exec.Command(dockerBinary, "events", "--since=0", fmt.Sprintf("--until=%d", daemonTime(c).Unix())) out, _, _ := runCommandWithOutput(eventsCmd) events := strings.Split(out, "\n") nEvents := len(events) - 1 if nEvents != 64 { c.Fatalf("events should be limited to 64, but received %d", nEvents) } } func (s *DockerSuite) TestEventsContainerEvents(c *check.C) { dockerCmd(c, "run", "--rm", "busybox", "true") eventsCmd := exec.Command(dockerBinary, "events", "--since=0", fmt.Sprintf("--until=%d", daemonTime(c).Unix())) out, exitCode, err := runCommandWithOutput(eventsCmd) if exitCode != 0 || err != nil { c.Fatalf("Failed to get events with exit code %d: %s", exitCode, err) } events := strings.Split(out, "\n") events = events[:len(events)-1] if len(events) < 4 { c.Fatalf("Missing expected event") } createEvent := strings.Fields(events[len(events)-4]) startEvent := strings.Fields(events[len(events)-3]) dieEvent := strings.Fields(events[len(events)-2]) destroyEvent := strings.Fields(events[len(events)-1]) if createEvent[len(createEvent)-1] != "create" { c.Fatalf("event should be create, not %#v", createEvent) } if startEvent[len(startEvent)-1] != "start" { c.Fatalf("event should be start, not %#v", startEvent) } if dieEvent[len(dieEvent)-1] != "die" { c.Fatalf("event should be die, not %#v", dieEvent) } if destroyEvent[len(destroyEvent)-1] != "destroy" { c.Fatalf("event should be destroy, not %#v", destroyEvent) } } func (s *DockerSuite) TestEventsContainerEventsSinceUnixEpoch(c *check.C) { dockerCmd(c, "run", "--rm", "busybox", "true") timeBeginning := time.Unix(0, 0).Format(time.RFC3339Nano) timeBeginning = strings.Replace(timeBeginning, "Z", ".000000000Z", -1) eventsCmd := exec.Command(dockerBinary, "events", fmt.Sprintf("--since='%s'", timeBeginning), fmt.Sprintf("--until=%d", daemonTime(c).Unix())) out, exitCode, err := runCommandWithOutput(eventsCmd) if exitCode != 0 || err != nil { c.Fatalf("Failed to get events with exit code %d: %s", exitCode, err) } events := strings.Split(out, "\n") events = events[:len(events)-1] if len(events) < 4 { c.Fatalf("Missing expected event") } createEvent := strings.Fields(events[len(events)-4]) startEvent := strings.Fields(events[len(events)-3]) dieEvent := strings.Fields(events[len(events)-2]) destroyEvent := strings.Fields(events[len(events)-1]) if createEvent[len(createEvent)-1] != "create" { c.Fatalf("event should be create, not %#v", createEvent) } if startEvent[len(startEvent)-1] != "start" { c.Fatalf("event should be start, not %#v", startEvent) } if dieEvent[len(dieEvent)-1] != "die" { c.Fatalf("event should be die, not %#v", dieEvent) } if destroyEvent[len(destroyEvent)-1] != "destroy" { c.Fatalf("event should be destroy, not %#v", destroyEvent) } } func (s *DockerSuite) TestEventsImageUntagDelete(c *check.C) { name := "testimageevents" _, err := buildImage(name, `FROM scratch MAINTAINER "docker"`, true) if err != nil { c.Fatal(err) } if err := deleteImages(name); err != nil { c.Fatal(err) } eventsCmd := exec.Command(dockerBinary, "events", "--since=0", fmt.Sprintf("--until=%d", daemonTime(c).Unix())) out, exitCode, err := runCommandWithOutput(eventsCmd) if exitCode != 0 || err != nil { c.Fatalf("Failed to get events with exit code %d: %s", exitCode, err) } events := strings.Split(out, "\n") events = events[:len(events)-1] if len(events) < 2 { c.Fatalf("Missing expected event") } untagEvent := strings.Fields(events[len(events)-2]) deleteEvent := strings.Fields(events[len(events)-1]) if untagEvent[len(untagEvent)-1] != "untag" { c.Fatalf("untag should be untag, not %#v", untagEvent) } if deleteEvent[len(deleteEvent)-1] != "delete" { c.Fatalf("delete should be delete, not %#v", deleteEvent) } } func (s *DockerSuite) TestEventsImageTag(c *check.C) { time.Sleep(time.Second * 2) // because API has seconds granularity since := daemonTime(c).Unix() image := "testimageevents:tag" dockerCmd(c, "tag", "busybox", image) eventsCmd := exec.Command(dockerBinary, "events", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix())) out, _, err := runCommandWithOutput(eventsCmd) c.Assert(err, check.IsNil) events := strings.Split(strings.TrimSpace(out), "\n") if len(events) != 1 { c.Fatalf("was expecting 1 event. out=%s", out) } event := strings.TrimSpace(events[0]) expectedStr := image + ": tag" if !strings.HasSuffix(event, expectedStr) { c.Fatalf("wrong event format. expected='%s' got=%s", expectedStr, event) } } func (s *DockerSuite) TestEventsImagePull(c *check.C) { since := daemonTime(c).Unix() testRequires(c, Network) pullCmd := exec.Command(dockerBinary, "pull", "hello-world") if out, _, err := runCommandWithOutput(pullCmd); err != nil { c.Fatalf("pulling the hello-world image from has failed: %s, %v", out, err) } eventsCmd := exec.Command(dockerBinary, "events", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix())) out, _, _ := runCommandWithOutput(eventsCmd) events := strings.Split(strings.TrimSpace(out), "\n") event := strings.TrimSpace(events[len(events)-1]) if !strings.HasSuffix(event, "hello-world:latest: pull") { c.Fatalf("Missing pull event - got:%q", event) } } func (s *DockerSuite) TestEventsImageImport(c *check.C) { since := daemonTime(c).Unix() id := make(chan string) eventImport := make(chan struct{}) eventsCmd := exec.Command(dockerBinary, "events", "--since", strconv.FormatInt(since, 10)) stdout, err := eventsCmd.StdoutPipe() if err != nil { c.Fatal(err) } if err := eventsCmd.Start(); err != nil { c.Fatal(err) } defer eventsCmd.Process.Kill() go func() { containerID := <-id matchImport := regexp.MustCompile(containerID + `: import$`) scanner := bufio.NewScanner(stdout) for scanner.Scan() { if matchImport.MatchString(scanner.Text()) { close(eventImport) } } }() runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "true") out, _, err := runCommandWithOutput(runCmd) if err != nil { c.Fatal("failed to create a container", out, err) } cleanedContainerID := strings.TrimSpace(out) out, _, err = runCommandPipelineWithOutput( exec.Command(dockerBinary, "export", cleanedContainerID), exec.Command(dockerBinary, "import", "-"), ) if err != nil { c.Errorf("import failed with errors: %v, output: %q", err, out) } newContainerID := strings.TrimSpace(out) id <- newContainerID select { case <-time.After(5 * time.Second): c.Fatal("failed to observe image import in timely fashion") case <-eventImport: // ignore, done } } func (s *DockerSuite) TestEventsFilters(c *check.C) { parseEvents := func(out, match string) { events := strings.Split(out, "\n") events = events[:len(events)-1] for _, event := range events { eventFields := strings.Fields(event) eventName := eventFields[len(eventFields)-1] if ok, err := regexp.MatchString(match, eventName); err != nil || !ok { c.Fatalf("event should match %s, got %#v, err: %v", match, eventFields, err) } } } since := daemonTime(c).Unix() out, _, err := runCommandWithOutput(exec.Command(dockerBinary, "run", "--rm", "busybox", "true")) if err != nil { c.Fatal(out, err) } out, _, err = runCommandWithOutput(exec.Command(dockerBinary, "run", "--rm", "busybox", "true")) if err != nil { c.Fatal(out, err) } out, _, err = runCommandWithOutput(exec.Command(dockerBinary, "events", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix()), "--filter", "event=die")) if err != nil { c.Fatalf("Failed to get events: %s", err) } parseEvents(out, "die") out, _, err = runCommandWithOutput(exec.Command(dockerBinary, "events", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix()), "--filter", "event=die", "--filter", "event=start")) if err != nil { c.Fatalf("Failed to get events: %s", err) } parseEvents(out, "((die)|(start))") // make sure we at least got 2 start events count := strings.Count(out, "start") if count < 2 { c.Fatalf("should have had 2 start events but had %d, out: %s", count, out) } } func (s *DockerSuite) TestEventsFilterImageName(c *check.C) { since := daemonTime(c).Unix() out, _, err := runCommandWithOutput(exec.Command(dockerBinary, "run", "--name", "container_1", "-d", "busybox:latest", "true")) if err != nil { c.Fatal(out, err) } container1 := strings.TrimSpace(out) out, _, err = runCommandWithOutput(exec.Command(dockerBinary, "run", "--name", "container_2", "-d", "busybox", "true")) if err != nil { c.Fatal(out, err) } container2 := strings.TrimSpace(out) name := "busybox" eventsCmd := exec.Command(dockerBinary, "events", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix()), "--filter", fmt.Sprintf("image=%s", name)) out, _, err = runCommandWithOutput(eventsCmd) if err != nil { c.Fatalf("Failed to get events, error: %s(%s)", err, out) } events := strings.Split(out, "\n") events = events[:len(events)-1] if len(events) == 0 { c.Fatalf("Expected events but found none for the image busybox:latest") } count1 := 0 count2 := 0 for _, e := range events { if strings.Contains(e, container1) { count1++ } else if strings.Contains(e, container2) { count2++ } } if count1 == 0 || count2 == 0 { c.Fatalf("Expected events from each container but got %d from %s and %d from %s", count1, container1, count2, container2) } } func (s *DockerSuite) TestEventsFilterContainer(c *check.C) { since := fmt.Sprintf("%d", daemonTime(c).Unix()) nameID := make(map[string]string) for _, name := range []string{"container_1", "container_2"} { out, _, err := runCommandWithOutput(exec.Command(dockerBinary, "run", "--name", name, "busybox", "true")) if err != nil { c.Fatalf("Error: %v, Output: %s", err, out) } id, err := inspectField(name, "Id") if err != nil { c.Fatal(err) } nameID[name] = id } until := fmt.Sprintf("%d", daemonTime(c).Unix()) checkEvents := func(id string, events []string) error { if len(events) != 3 { // create, start, die return fmt.Errorf("expected 3 events, got %v", events) } for _, event := range events { e := strings.Fields(event) if len(e) < 3 { return fmt.Errorf("got malformed event: %s", event) } // Check the id parsedID := strings.TrimSuffix(e[1], ":") if parsedID != id { return fmt.Errorf("expected event for container id %s: %s - parsed container id: %s", id, event, parsedID) } } return nil } for name, ID := range nameID { // filter by names eventsCmd := exec.Command(dockerBinary, "events", "--since", since, "--until", until, "--filter", "container="+name) out, _, err := runCommandWithOutput(eventsCmd) if err != nil { c.Fatal(err) } events := strings.Split(strings.TrimSuffix(out, "\n"), "\n") if err := checkEvents(ID, events); err != nil { c.Fatal(err) } // filter by ID's eventsCmd = exec.Command(dockerBinary, "events", "--since", since, "--until", until, "--filter", "container="+ID) out, _, err = runCommandWithOutput(eventsCmd) if err != nil { c.Fatal(err) } events = strings.Split(strings.TrimSuffix(out, "\n"), "\n") if err := checkEvents(ID, events); err != nil { c.Fatal(err) } } } func (s *DockerSuite) TestEventsStreaming(c *check.C) { start := daemonTime(c).Unix() id := make(chan string) eventCreate := make(chan struct{}) eventStart := make(chan struct{}) eventDie := make(chan struct{}) eventDestroy := make(chan struct{}) eventsCmd := exec.Command(dockerBinary, "events", "--since", strconv.FormatInt(start, 10)) stdout, err := eventsCmd.StdoutPipe() if err != nil { c.Fatal(err) } if err := eventsCmd.Start(); err != nil { c.Fatalf("failed to start 'docker events': %s", err) } defer eventsCmd.Process.Kill() go func() { containerID := <-id matchCreate := regexp.MustCompile(containerID + `: \(from busybox:latest\) create$`) matchStart := regexp.MustCompile(containerID + `: \(from busybox:latest\) start$`) matchDie := regexp.MustCompile(containerID + `: \(from busybox:latest\) die$`) matchDestroy := regexp.MustCompile(containerID + `: \(from busybox:latest\) destroy$`) scanner := bufio.NewScanner(stdout) for scanner.Scan() { switch { case matchCreate.MatchString(scanner.Text()): close(eventCreate) case matchStart.MatchString(scanner.Text()): close(eventStart) case matchDie.MatchString(scanner.Text()): close(eventDie) case matchDestroy.MatchString(scanner.Text()): close(eventDestroy) } } }() runCmd := exec.Command(dockerBinary, "run", "-d", "busybox:latest", "true") out, _, err := runCommandWithOutput(runCmd) if err != nil { c.Fatal(out, err) } cleanedContainerID := strings.TrimSpace(out) id <- cleanedContainerID select { case <-time.After(5 * time.Second): c.Fatal("failed to observe container create in timely fashion") case <-eventCreate: // ignore, done } select { case <-time.After(5 * time.Second): c.Fatal("failed to observe container start in timely fashion") case <-eventStart: // ignore, done } select { case <-time.After(5 * time.Second): c.Fatal("failed to observe container die in timely fashion") case <-eventDie: // ignore, done } rmCmd := exec.Command(dockerBinary, "rm", cleanedContainerID) out, _, err = runCommandWithOutput(rmCmd) if err != nil { c.Fatal(out, err) } select { case <-time.After(5 * time.Second): c.Fatal("failed to observe container destroy in timely fashion") case <-eventDestroy: // ignore, done } }