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
}
}
// #13753
func (s *DockerSuite) TestEventsDefaultEmpty(c *check.C) {
dockerCmd(c, "run", "-d", "busybox")
out, _ := dockerCmd(c, "events", fmt.Sprintf("--until=%d", daemonTime(c).Unix()))
c.Assert(strings.TrimSpace(out), check.Equals, "")
}