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Add filter by event type and documentation.

Browse source 
Signed-off-by: David Calavera <david.calavera@gmail.com>
This commit is contained in:
David Calavera 2015-12-28 15:15:34 -05:00
parent f15af1eff7
commit 851fe00c64
11 changed files with 552 additions and 280 deletions
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27
api/client/events.go
View file

@ -58,16 +58,29 @@ func (cli *DockerCli) CmdEvents(args ...string) error {
// streamEvents decodes prints the incoming events in the provided output.
func streamEvents(input io.Reader, output io.Writer) error {
dec := json.NewDecoder(input)
for {
var event eventtypes.Message
if err := dec.Decode(&event); err != nil {
if err == io.EOF {
break
}
return decodeEvents(input, func(event eventtypes.Message, err error) error {
if err != nil {
return err
}
printOutput(event, output)
return nil
})
}
type eventProcessor func(event eventtypes.Message, err error) error
func decodeEvents(input io.Reader, ep eventProcessor) error {
dec := json.NewDecoder(input)
for {
var event eventtypes.Message
err := dec.Decode(&event)
if err != nil && err == io.EOF {
break
}
if procErr := ep(event, err); procErr != nil {
return procErr
}
}
return nil
}

23
api/client/stats.go
View file

@ -11,8 +11,9 @@ import (
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/events"
"github.com/docker/docker/api/types/filters"
Cli "github.com/docker/docker/cli"
"github.com/docker/docker/pkg/jsonmessage"
"github.com/docker/go-units"
)
@ -189,7 +190,11 @@ func (cli *DockerCli) CmdStats(args ...string) error {
err error
}
getNewContainers := func(c chan<- watch) {
options := types.EventsOptions{}
f := filters.NewArgs()
f.Add("type", "container")
options := types.EventsOptions{
Filters: f,
}
resBody, err := cli.client.Events(options)
if err != nil {
c <- watch{err: err}
@ -197,15 +202,15 @@ func (cli *DockerCli) CmdStats(args ...string) error {
}
defer resBody.Close()
dec := json.NewDecoder(resBody)
for {
var j *jsonmessage.JSONMessage
if err := dec.Decode(&j); err != nil {
decodeEvents(resBody, func(event events.Message, err error) error {
if err != nil {
c <- watch{err: err}
return
}
c <- watch{j.ID[:12], j.Status, nil}
return nil
}
c <- watch{event.ID[:12], event.Action, nil}
return nil
})
}
go func(stopChan chan<- error) {
cChan := make(chan watch)

44
daemon/events/filter.go
View file

@ -18,16 +18,16 @@ func NewFilter(filter filters.Args) *Filter {
// Include returns true when the event ev is included by the filters
func (ef *Filter) Include(ev events.Message) bool {
if ev.Type != events.ContainerEventType && ev.Type != events.ImageEventType {
return false
}
return ef.filter.ExactMatch("event", ev.Action) &&
ef.filter.ExactMatch("type", ev.Type) &&
ef.matchContainer(ev) &&
ef.isImageIncluded(ev) &&
ef.isLabelFieldIncluded(ev.Actor.Attributes)
ef.matchVolume(ev) &&
ef.matchNetwork(ev) &&
ef.matchImage(ev) &&
ef.matchLabels(ev.Actor.Attributes)
}
func (ef *Filter) isLabelFieldIncluded(attributes map[string]string) bool {
func (ef *Filter) matchLabels(attributes map[string]string) bool {
if !ef.filter.Include("label") {
return true
}
@ -35,18 +35,36 @@ func (ef *Filter) isLabelFieldIncluded(attributes map[string]string) bool {
}
func (ef *Filter) matchContainer(ev events.Message) bool {
return ef.filter.FuzzyMatch("container", ev.Actor.ID) ||
ef.filter.FuzzyMatch("container", ev.Actor.Attributes["name"])
return ef.fuzzyMatchName(ev, events.ContainerEventType)
}
// The image filter will be matched against both event.ID (for image events)
// and event.From (for container events), so that any container that was created
func (ef *Filter) matchVolume(ev events.Message) bool {
return ef.fuzzyMatchName(ev, events.VolumeEventType)
}
func (ef *Filter) matchNetwork(ev events.Message) bool {
return ef.fuzzyMatchName(ev, events.NetworkEventType)
}
func (ef *Filter) fuzzyMatchName(ev events.Message, eventType string) bool {
return ef.filter.FuzzyMatch(eventType, ev.Actor.ID) ||
ef.filter.FuzzyMatch(eventType, ev.Actor.Attributes["name"])
}
// matchImage matches against both event.Actor.ID (for image events)
// and event.Actor.Attributes["image"] (for container events), so that any container that was created
// from an image will be included in the image events. Also compare both
// against the stripped repo name without any tags.
func (ef *Filter) isImageIncluded(ev events.Message) bool {
id := ev.ID
func (ef *Filter) matchImage(ev events.Message) bool {
id := ev.Actor.ID
nameAttr := "image"
var imageName string
if n, ok := ev.Actor.Attributes["image"]; ok {
if ev.Type == events.ImageEventType {
nameAttr = "name"
}
if n, ok := ev.Actor.Attributes[nameAttr]; ok {
imageName = n
}
return ef.filter.ExactMatch("image", id) ||

6
docs/misc/deprecated.md
View file

@ -12,6 +12,12 @@ parent = "mn_use_docker"
The following list of features are deprecated.
### Ambiguous event fields in API
**Deprecated In Release: v1.10**
The fields `ID`, `Status` and `From` in the events API have been deprecated in favor of a more rich structure.
See the events API documentation for the new format.
### `-f` flag on `docker tag`
**Deprecated In Release: v1.10**

64
docs/reference/api/docker_remote_api_v1.22.md
View file

@ -2263,17 +2263,24 @@ Status Codes:
`GET /events`
Get container events from docker, either in real time via streaming, or via
polling (using since).
Get container events from docker, either in real time via streaming, or via polling (using since).
Docker containers report the following events:
attach, commit, copy, create, destroy, die, exec_create, exec_start, export, kill, oom, pause, rename, resize, restart, start, stop, top, unpause
attach, commit, copy, create, destroy, die, exec_create, exec_start, export, kill, oom, pause, rename, resize, restart, start, stop, top, unpause, update
and Docker images report:
Docker images report the following events:
delete, import, pull, push, tag, untag
Docker volumes report the following events:
create, mount, unmount, destroy
Docker networks report the following events:
create, connect, disconnect, destroy
**Example request**:
GET /events?since=1374067924
@ -2283,10 +2290,48 @@ and Docker images report:
HTTP/1.1 200 OK
Content-Type: application/json
{"status":"pull","id":"busybox:latest","time":1442421700,"timeNano":1442421700598988358}
{"status":"create","id":"5745704abe9caa5","from":"busybox","time":1442421716,"timeNano":1442421716853979870}
{"status":"attach","id":"5745704abe9caa5","from":"busybox","time":1442421716,"timeNano":1442421716894759198}
{"status":"start","id":"5745704abe9caa5","from":"busybox","time":1442421716,"timeNano":1442421716983607193}
[
{
"action": "pull",
"type": "image",
"actor": {
"id": "busybox:latest",
"attributes": {}
}
"time": 1442421700,
"timeNano": 1442421700598988358
},
{
"action": "create",
"type": "container",
"actor": {
"id": "5745704abe9caa5",
"attributes": {"image": "busybox"}
}
"time": 1442421716,
"timeNano": 1442421716853979870
},
{
"action": "attach",
"type": "container",
"actor": {
"id": "5745704abe9caa5",
"attributes": {"image": "busybox"}
}
"time": 1442421716,
"timeNano": 1442421716894759198
},
{
"action": "start",
"type": "container",
"actor": {
"id": "5745704abe9caa5",
"attributes": {"image": "busybox"}
}
"time": 1442421716,
"timeNano": 1442421716983607193
}
]
Query Parameters:
@ -2297,6 +2342,9 @@ Query Parameters:
- `event=<string>`; -- event to filter
- `image=<string>`; -- image to filter
- `label=<string>`; -- image and container label to filter
- `type=<string>`; -- either `container` or `image` or `volume` or `network`
- `volume=<string>`; -- volume to filter
- `network=<string>`; -- network to filter
Status Codes:

105
docs/reference/commandline/events.md
View file

@ -19,14 +19,22 @@ parent = "smn_cli"
--since="" Show all events created since timestamp
--until="" Stream events until this timestamp
Docker containers will report the following events:
Docker containers report the following events:
attach, commit, copy, create, destroy, die, exec_create, exec_start, export, kill, oom, pause, rename, resize, restart, start, stop, top, unpause
attach, commit, copy, create, destroy, die, exec_create, exec_start, export, kill, oom, pause, rename, resize, restart, start, stop, top, unpause, update
and Docker images will report:
Docker images report the following events:
delete, import, pull, push, tag, untag
Docker volumes report the following events:
create, mount, unmount, destroy
Docker networks report the following events:
create, connect, disconnect, destroy
The `--since` and `--until` parameters can be Unix timestamps, date formatted
timestamps, or Go duration strings (e.g. `10m`, `1h30m`) computed
relative to the client machine’s time. If you do not provide the --since option,
@ -57,9 +65,12 @@ container container 588a23dac085 *AND* the event type is *start*
The currently supported filters are:
* container (`container=<name or id>`)
* event (`event=<event type>`)
* event (`event=<event action>`)
* image (`image=<tag or id>`)
* label (`label=<key>` or `label=<key>=<value>`)
* type (`type=<container or image or volume or network>`)
* volume (`volume=<name or id>`)
* network (`network=<name or id>`)
## Examples
@ -77,68 +88,78 @@ You'll need two shells for this example.
**Shell 1: (Again .. now showing events):**
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) start
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2015-05-12T11:51:30.999999999Z07:00 container start 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T11:51:30.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:52:12.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:53:45.999999999Z07:00 container die 7805c1d35632 (image=redis:2.8)
2015-05-12T15:54:03.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
**Show events in the past from a specified time:**
$ docker events --since 1378216169
2014-03-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2014-03-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2015-05-12T11:51:30.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:52:12.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:53:45.999999999Z07:00 container die 7805c1d35632 (image=redis:2.8)
2015-05-12T15:54:03.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
$ docker events --since '2013-09-03'
2014-09-03T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) start
2014-09-03T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2014-09-03T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2015-05-12T11:51:30.999999999Z07:00 container start 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T11:51:30.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:52:12.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:53:45.999999999Z07:00 container die 7805c1d35632 (image=redis:2.8)
2015-05-12T15:54:03.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
$ docker events --since '2013-09-03T15:49:29'
2014-09-03T15:49:29.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2014-09-03T15:49:29.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2015-05-12T11:51:30.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:52:12.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:53:45.999999999Z07:00 container die 7805c1d35632 (image=redis:2.8)
2015-05-12T15:54:03.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
This example outputs all events that were generated in the last 3 minutes,
relative to the current time on the client machine:
$ docker events --since '3m'
2015-05-12T11:51:30.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2015-05-12T15:52:12.999999999Z07:00 4 4386fb97867d: (from ubuntu-1:14.04) stop
2015-05-12T15:53:45.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2015-05-12T15:54:03.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2015-05-12T11:51:30.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:52:12.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2015-05-12T15:53:45.999999999Z07:00 container die 7805c1d35632 (image=redis:2.8)
2015-05-12T15:54:03.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
**Filter events:**
$ docker events --filter 'event=stop'
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-09-03T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2014-05-10T17:42:14.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2014-09-03T17:42:14.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
$ docker events --filter 'image=ubuntu-1:14.04'
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) start
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-05-10T17:42:14.999999999Z07:00 container start 4386fb97867d (image=ubuntu-1:14.04)
2014-05-10T17:42:14.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2014-05-10T17:42:14.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
$ docker events --filter 'container=7805c1d35632'
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2014-09-03T15:49:29.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2014-05-10T17:42:14.999999999Z07:00 container die 7805c1d35632 (image=redis:2.8)
2014-09-03T15:49:29.999999999Z07:00 container stop 7805c1d35632 (image= redis:2.8)
$ docker events --filter 'container=7805c1d35632' --filter 'container=4386fb97867d'
2014-09-03T15:49:29.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2014-09-03T15:49:29.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2014-09-03T15:49:29.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2014-05-10T17:42:14.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2014-05-10T17:42:14.999999999Z07:00 container die 7805c1d35632 (image=redis:2.8)
2014-09-03T15:49:29.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
$ docker events --filter 'container=7805c1d35632' --filter 'event=stop'
2014-09-03T15:49:29.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2014-09-03T15:49:29.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
$ docker events --filter 'container=container_1' --filter 'container=container_2'
2014-09-03T15:49:29.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) die
2014-05-10T17:42:14.999999999Z07:00 4386fb97867d: (from ubuntu-1:14.04) stop
2014-05-10T17:42:14.999999999Z07:00 7805c1d35632: (from redis:2.8) die
2014-09-03T15:49:29.999999999Z07:00 7805c1d35632: (from redis:2.8) stop
2014-09-03T15:49:29.999999999Z07:00 container die 4386fb97867d (image=ubuntu-1:14.04)
2014-05-10T17:42:14.999999999Z07:00 container stop 4386fb97867d (image=ubuntu-1:14.04)
2014-05-10T17:42:14.999999999Z07:00 container die 7805c1d35632 (imager=redis:2.8)
2014-09-03T15:49:29.999999999Z07:00 container stop 7805c1d35632 (image=redis:2.8)
$ docker events --filter 'type=volume'
2015-12-23T21:05:28.136212689Z volume create test-event-volume-local (driver=local)
2015-12-23T21:05:28.383462717Z volume mount test-event-volume-local (read/write=true, container=562fe10671e9273da25eed36cdce26159085ac7ee6707105fd534866340a5025, destination=/foo, driver=local, propagation=rprivate)
2015-12-23T21:05:28.650314265Z volume unmount test-event-volume-local (container=562fe10671e9273da25eed36cdce26159085ac7ee6707105fd534866340a5025, driver=local)
2015-12-23T21:05:28.716218405Z volume destroy test-event-volume-local (driver=local)
$ docker events --filter 'type=network'
2015-12-23T21:38:24.705709133Z network create 8b111217944ba0ba844a65b13efcd57dc494932ee2527577758f939315ba2c5b (name=test-event-network-local, type=bridge)
2015-12-23T21:38:25.119625123Z network connect 8b111217944ba0ba844a65b13efcd57dc494932ee2527577758f939315ba2c5b (name=test-event-network-local, container=b4be644031a3d90b400f88ab3d4bdf4dc23adb250e696b6328b85441abe2c54e, type=bridge)

85
integration-cli/docker_cli_build_test.go
View file

@ -2,7 +2,6 @@ package main
import (
"archive/tar"
"bufio"
"bytes"
"encoding/json"
"fmt"
@ -1863,90 +1862,6 @@ func (s *DockerSuite) TestBuildForceRm(c *check.C) {
}
// Test that an infinite sleep during a build is killed if the client disconnects.
// This test is fairly hairy because there are lots of ways to race.
// Strategy:
// * Monitor the output of docker events starting from before
// * Run a 1-year-long sleep from a docker build.
// * When docker events sees container start, close the "docker build" command
// * Wait for docker events to emit a dying event.
func (s *DockerSuite) TestBuildCancellationKillsSleep(c *check.C) {
testRequires(c, DaemonIsLinux)
name := "testbuildcancellation"
observer, err := newEventObserver(c)
c.Assert(err, checker.IsNil)
err = observer.Start()
c.Assert(err, checker.IsNil)
defer observer.Stop()
// (Note: one year, will never finish)
ctx, err := fakeContext("FROM busybox\nRUN sleep 31536000", nil)
if err != nil {
c.Fatal(err)
}
defer ctx.Close()
buildCmd := exec.Command(dockerBinary, "build", "-t", name, ".")
buildCmd.Dir = ctx.Dir
stdoutBuild, err := buildCmd.StdoutPipe()
if err := buildCmd.Start(); err != nil {
c.Fatalf("failed to run build: %s", err)
}
matchCID := regexp.MustCompile("Running in (.+)")
scanner := bufio.NewScanner(stdoutBuild)
outputBuffer := new(bytes.Buffer)
var buildID string
for scanner.Scan() {
line := scanner.Text()
outputBuffer.WriteString(line)
outputBuffer.WriteString("\n")
if matches := matchCID.FindStringSubmatch(line); len(matches) > 0 {
buildID = matches[1]
break
}
}
if buildID == "" {
c.Fatalf("Unable to find build container id in build output:\n%s", outputBuffer.String())
}
testActions := map[string]chan bool{
"start": make(chan bool),
"die": make(chan bool),
}
go observer.Match(matchEventLine(buildID, "container", testActions))
select {
case <-time.After(10 * time.Second):
c.Fatal(observer.TimeoutError(buildID, "start"))
case <-testActions["start"]:
// ignore, done
}
// Send a kill to the `docker build` command.
// Causes the underlying build to be cancelled due to socket close.
if err := buildCmd.Process.Kill(); err != nil {
c.Fatalf("error killing build command: %s", err)
}
// Get the exit status of `docker build`, check it exited because killed.
if err := buildCmd.Wait(); err != nil && !isKilled(err) {
c.Fatalf("wait failed during build run: %T %s", err, err)
}
select {
case <-time.After(10 * time.Second):
c.Fatal(observer.TimeoutError(buildID, "die"))
case <-testActions["die"]:
// ignore, done
}
}
func (s *DockerSuite) TestBuildRm(c *check.C) {
testRequires(c, DaemonIsLinux)
name := "testbuildrm"

90
integration-cli/docker_cli_build_unix_test.go
View file

@ -3,12 +3,16 @@
package main
import (
"bufio"
"bytes"
"encoding/json"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
"time"
"github.com/docker/docker/pkg/integration/checker"
"github.com/docker/go-units"
@ -115,5 +119,89 @@ func (s *DockerSuite) TestBuildAddChangeOwnership(c *check.C) {
if _, err := buildImageFromContext(name, ctx, true); err != nil {
c.Fatalf("build failed to complete for TestBuildAddChangeOwnership: %v", err)
}
}
// Test that an infinite sleep during a build is killed if the client disconnects.
// This test is fairly hairy because there are lots of ways to race.
// Strategy:
// * Monitor the output of docker events starting from before
// * Run a 1-year-long sleep from a docker build.
// * When docker events sees container start, close the "docker build" command
// * Wait for docker events to emit a dying event.
func (s *DockerSuite) TestBuildCancellationKillsSleep(c *check.C) {
testRequires(c, DaemonIsLinux)
name := "testbuildcancellation"
observer, err := newEventObserver(c)
c.Assert(err, checker.IsNil)
err = observer.Start()
c.Assert(err, checker.IsNil)
defer observer.Stop()
// (Note: one year, will never finish)
ctx, err := fakeContext("FROM busybox\nRUN sleep 31536000", nil)
if err != nil {
c.Fatal(err)
}
defer ctx.Close()
buildCmd := exec.Command(dockerBinary, "build", "-t", name, ".")
buildCmd.Dir = ctx.Dir
stdoutBuild, err := buildCmd.StdoutPipe()
if err := buildCmd.Start(); err != nil {
c.Fatalf("failed to run build: %s", err)
}
matchCID := regexp.MustCompile("Running in (.+)")
scanner := bufio.NewScanner(stdoutBuild)
outputBuffer := new(bytes.Buffer)
var buildID string
for scanner.Scan() {
line := scanner.Text()
outputBuffer.WriteString(line)
outputBuffer.WriteString("\n")
if matches := matchCID.FindStringSubmatch(line); len(matches) > 0 {
buildID = matches[1]
break
}
}
if buildID == "" {
c.Fatalf("Unable to find build container id in build output:\n%s", outputBuffer.String())
}
testActions := map[string]chan bool{
"start": make(chan bool),
"die": make(chan bool),
}
matcher := matchEventLine(buildID, "container", testActions)
go observer.Match(matcher)
select {
case <-time.After(10 * time.Second):
observer.CheckEventError(c, buildID, "start", matcher)
case <-testActions["start"]:
// ignore, done
}
// Send a kill to the `docker build` command.
// Causes the underlying build to be cancelled due to socket close.
if err := buildCmd.Process.Kill(); err != nil {
c.Fatalf("error killing build command: %s", err)
}
// Get the exit status of `docker build`, check it exited because killed.
if err := buildCmd.Wait(); err != nil && !isKilled(err) {
c.Fatalf("wait failed during build run: %T %s", err, err)
}
select {
case <-time.After(10 * time.Second):
observer.CheckEventError(c, buildID, "die", matcher)
case <-testActions["die"]:
// ignore, done
}
}

168
integration-cli/docker_cli_events_test.go
View file

@ -72,13 +72,25 @@ func (s *DockerSuite) TestEventsContainerFailStartDie(c *check.C) {
c.Assert(err, checker.NotNil, check.Commentf("Container run with command blerg should have failed, but it did not, out=%s", out))
out, _ = dockerCmd(c, "events", "--since=0", fmt.Sprintf("--until=%d", daemonTime(c).Unix()))
events := strings.Split(out, "\n")
events := strings.Split(strings.TrimSpace(out), "\n")
nEvents := len(events)
c.Assert(nEvents, checker.GreaterOrEqualThan, 1) //Missing expected event
c.Assert(parseEventAction(c, events[nEvents-3]), checker.Equals, "start")
c.Assert(parseEventAction(c, events[nEvents-2]), checker.Equals, "die")
actions := eventActionsByIDAndType(c, events, "testeventdie", "container")
var startEvent bool
var dieEvent bool
for _, a := range actions {
switch a {
case "start":
startEvent = true
case "die":
dieEvent = true
}
}
c.Assert(startEvent, checker.True, check.Commentf("Start event not found: %v\n%v", actions, events))
c.Assert(dieEvent, checker.True, check.Commentf("Die event not found: %v\n%v", actions, events))
}
func (s *DockerSuite) TestEventsLimit(c *check.C) {
@ -150,45 +162,6 @@ func (s *DockerSuite) TestEventsContainerEventsSinceUnixEpoch(c *check.C) {
c.Assert(containerEvents[4], checker.Equals, "destroy", check.Commentf(out))
}
func (s *DockerSuite) TestEventsImageUntagDelete(c *check.C) {
testRequires(c, DaemonIsLinux)
observer, err := newEventObserver(c)
c.Assert(err, checker.IsNil)
err = observer.Start()
c.Assert(err, checker.IsNil)
defer observer.Stop()
name := "testimageevents"
imageID, err := buildImage(name,
`FROM scratch
MAINTAINER "docker"`,
true)
c.Assert(err, checker.IsNil)
c.Assert(deleteImages(name), checker.IsNil)
testActions := map[string]chan bool{
"untag": make(chan bool),
"delete": make(chan bool),
}
go observer.Match(matchEventLine(imageID, "image", testActions))
select {
case <-time.After(10 * time.Second):
c.Fatal(observer.TimeoutError(imageID, "untag"))
case <-testActions["untag"]:
// ignore, done
}
select {
case <-time.After(10 * time.Second):
c.Fatal(observer.TimeoutError(imageID, "delete"))
case <-testActions["delete"]:
// ignore, done
}
}
func (s *DockerSuite) TestEventsImageTag(c *check.C) {
testRequires(c, DaemonIsLinux)
time.Sleep(1 * time.Second) // because API has seconds granularity
@ -205,7 +178,6 @@ func (s *DockerSuite) TestEventsImageTag(c *check.C) {
event := strings.TrimSpace(events[0])
matches := parseEventText(event)
c.Assert(matches, checker.Not(checker.IsNil))
c.Assert(matchEventID(matches, image), checker.True, check.Commentf("matches: %v\nout:\n%s", matches, out))
c.Assert(matches["action"], checker.Equals, "tag")
}
@ -224,7 +196,6 @@ func (s *DockerSuite) TestEventsImagePull(c *check.C) {
events := strings.Split(strings.TrimSpace(out), "\n")
event := strings.TrimSpace(events[len(events)-1])
matches := parseEventText(event)
c.Assert(matches, checker.Not(checker.IsNil))
c.Assert(matches["id"], checker.Equals, "hello-world:latest")
c.Assert(matches["action"], checker.Equals, "pull")
@ -348,7 +319,8 @@ func (s *DockerSuite) TestEventsFilterImageLabels(c *check.C) {
"events",
fmt.Sprintf("--since=%d", since),
fmt.Sprintf("--until=%d", daemonTime(c).Unix()),
"--filter", fmt.Sprintf("label=%s", label))
"--filter", fmt.Sprintf("label=%s", label),
"--filter", "type=image")
events := strings.Split(strings.TrimSpace(out), "\n")
@ -399,46 +371,6 @@ func (s *DockerSuite) TestEventsFilterContainer(c *check.C) {
}
}
func (s *DockerSuite) TestEventsStreaming(c *check.C) {
testRequires(c, DaemonIsLinux)
observer, err := newEventObserver(c)
c.Assert(err, checker.IsNil)
err = observer.Start()
c.Assert(err, checker.IsNil)
defer observer.Stop()
out, _ := dockerCmd(c, "run", "-d", "busybox:latest", "true")
containerID := strings.TrimSpace(out)
testActions := map[string]chan bool{
"create": make(chan bool),
"start": make(chan bool),
"die": make(chan bool),
"destroy": make(chan bool),
}
go observer.Match(matchEventLine(containerID, "container", testActions))
select {
case <-time.After(5 * time.Second):
c.Fatal(observer.TimeoutError(containerID, "create/start/die"))
case <-testActions["create"]:
case <-testActions["start"]:
case <-testActions["die"]:
// ignore, done
}
dockerCmd(c, "rm", containerID)
select {
case <-time.After(5 * time.Second):
c.Fatal(observer.TimeoutError(containerID, "destroy"))
case <-testActions["destroy"]:
// ignore, done
}
}
func (s *DockerSuite) TestEventsCommit(c *check.C) {
testRequires(c, DaemonIsLinux)
since := daemonTime(c).Unix()
@ -587,3 +519,69 @@ func (s *DockerRegistrySuite) TestEventsImageFilterPush(c *check.C) {
out, _ = dockerCmd(c, "events", "--since=0", "-f", "image="+repoName, "-f", "event=push", "--until="+strconv.Itoa(int(since)))
c.Assert(out, checker.Contains, repoName, check.Commentf("Missing 'push' log event for %s", repoName))
}
func (s *DockerSuite) TestEventsFilterType(c *check.C) {
testRequires(c, DaemonIsLinux)
since := daemonTime(c).Unix()
name := "labelfiltertest"
label := "io.docker.testing=image"
// Build a test image.
_, err := buildImage(name, fmt.Sprintf(`
FROM busybox:latest
LABEL %s`, label), true)
c.Assert(err, checker.IsNil, check.Commentf("Couldn't create image"))
dockerCmd(c, "tag", name, "labelfiltertest:tag1")
dockerCmd(c, "tag", name, "labelfiltertest:tag2")
dockerCmd(c, "tag", "busybox:latest", "labelfiltertest:tag3")
out, _ := dockerCmd(
c,
"events",
fmt.Sprintf("--since=%d", since),
fmt.Sprintf("--until=%d", daemonTime(c).Unix()),
"--filter", fmt.Sprintf("label=%s", label),
"--filter", "type=image")
events := strings.Split(strings.TrimSpace(out), "\n")
// 2 events from the "docker tag" command, another one is from "docker build"
c.Assert(events, checker.HasLen, 3, check.Commentf("Events == %s", events))
for _, e := range events {
c.Assert(e, checker.Contains, "labelfiltertest")
}
out, _ = dockerCmd(
c,
"events",
fmt.Sprintf("--since=%d", since),
fmt.Sprintf("--until=%d", daemonTime(c).Unix()),
"--filter", fmt.Sprintf("label=%s", label),
"--filter", "type=container")
events = strings.Split(strings.TrimSpace(out), "\n")
// Events generated by the container that builds the image
c.Assert(events, checker.HasLen, 3, check.Commentf("Events == %s", events))
out, _ = dockerCmd(
c,
"events",
fmt.Sprintf("--since=%d", since),
fmt.Sprintf("--until=%d", daemonTime(c).Unix()),
"--filter", "type=network")
events = strings.Split(strings.TrimSpace(out), "\n")
c.Assert(len(events), checker.GreaterOrEqualThan, 1, check.Commentf("Events == %s", events))
}
func (s *DockerSuite) TestEventsFilterImageInContainerAction(c *check.C) {
testRequires(c, DaemonIsLinux)
since := daemonTime(c).Unix()
dockerCmd(c, "run", "--name", "test-container", "-d", "busybox", "true")
waitRun("test-container")
out, _ := dockerCmd(c, "events", "--filter", "image=busybox", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix()))
events := strings.Split(strings.TrimSpace(out), "\n")
c.Assert(len(events), checker.GreaterThan, 1, check.Commentf(out))
}

140
integration-cli/docker_cli_events_unix_test.go
View file

@ -203,3 +203,143 @@ func (s *DockerSuite) TestNetworkEvents(c *check.C) {
c.Assert(netEvents[2], checker.Equals, "disconnect")
c.Assert(netEvents[3], checker.Equals, "destroy")
}
func (s *DockerSuite) TestEventsStreaming(c *check.C) {
testRequires(c, DaemonIsLinux)
observer, err := newEventObserver(c)
c.Assert(err, checker.IsNil)
err = observer.Start()
c.Assert(err, checker.IsNil)
defer observer.Stop()
out, _ := dockerCmd(c, "run", "-d", "busybox:latest", "true")
containerID := strings.TrimSpace(out)
testActions := map[string]chan bool{
"create": make(chan bool),
"start": make(chan bool),
"die": make(chan bool),
"destroy": make(chan bool),
}
matcher := matchEventLine(containerID, "container", testActions)
go observer.Match(matcher)
select {
case <-time.After(5 * time.Second):
observer.CheckEventError(c, containerID, "create", matcher)
case <-testActions["create"]:
// ignore, done
}
select {
case <-time.After(5 * time.Second):
observer.CheckEventError(c, containerID, "start", matcher)
case <-testActions["start"]:
// ignore, done
}
select {
case <-time.After(5 * time.Second):
observer.CheckEventError(c, containerID, "die", matcher)
case <-testActions["die"]:
// ignore, done
}
dockerCmd(c, "rm", containerID)
select {
case <-time.After(5 * time.Second):
observer.CheckEventError(c, containerID, "destroy", matcher)
case <-testActions["destroy"]:
// ignore, done
}
}
func (s *DockerSuite) TestEventsImageUntagDelete(c *check.C) {
testRequires(c, DaemonIsLinux)
observer, err := newEventObserver(c)
c.Assert(err, checker.IsNil)
err = observer.Start()
c.Assert(err, checker.IsNil)
defer observer.Stop()
name := "testimageevents"
imageID, err := buildImage(name,
`FROM scratch
MAINTAINER "docker"`,
true)
c.Assert(err, checker.IsNil)
c.Assert(deleteImages(name), checker.IsNil)
testActions := map[string]chan bool{
"untag": make(chan bool),
"delete": make(chan bool),
}
matcher := matchEventLine(imageID, "image", testActions)
go observer.Match(matcher)
select {
case <-time.After(10 * time.Second):
observer.CheckEventError(c, imageID, "untag", matcher)
case <-testActions["untag"]:
// ignore, done
}
select {
case <-time.After(10 * time.Second):
observer.CheckEventError(c, imageID, "delete", matcher)
case <-testActions["delete"]:
// ignore, done
}
}
func (s *DockerSuite) TestEventsFilterVolumeAndNetworkType(c *check.C) {
testRequires(c, DaemonIsLinux)
since := daemonTime(c).Unix()
dockerCmd(c, "network", "create", "test-event-network-type")
dockerCmd(c, "volume", "create", "--name", "test-event-volume-type")
out, _ := dockerCmd(c, "events", "--filter", "type=volume", "--filter", "type=network", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix()))
events := strings.Split(strings.TrimSpace(out), "\n")
c.Assert(len(events), checker.GreaterOrEqualThan, 2, check.Commentf(out))
networkActions := eventActionsByIDAndType(c, events, "test-event-network-type", "network")
volumeActions := eventActionsByIDAndType(c, events, "test-event-volume-type", "volume")
c.Assert(volumeActions[0], checker.Equals, "create")
c.Assert(networkActions[0], checker.Equals, "create")
}
func (s *DockerSuite) TestEventsFilterVolumeID(c *check.C) {
testRequires(c, DaemonIsLinux)
since := daemonTime(c).Unix()
dockerCmd(c, "volume", "create", "--name", "test-event-volume-id")
out, _ := dockerCmd(c, "events", "--filter", "volume=test-event-volume-id", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix()))
events := strings.Split(strings.TrimSpace(out), "\n")
c.Assert(events, checker.HasLen, 1)
c.Assert(events[0], checker.Contains, "test-event-volume-id")
c.Assert(events[0], checker.Contains, "driver=local")
}
func (s *DockerSuite) TestEventsFilterNetworkID(c *check.C) {
testRequires(c, DaemonIsLinux)
since := daemonTime(c).Unix()
dockerCmd(c, "network", "create", "test-event-network-local")
out, _ := dockerCmd(c, "events", "--filter", "network=test-event-network-local", fmt.Sprintf("--since=%d", since), fmt.Sprintf("--until=%d", daemonTime(c).Unix()))
events := strings.Split(strings.TrimSpace(out), "\n")
c.Assert(events, checker.HasLen, 1)
c.Assert(events[0], checker.Contains, "test-event-network-local")
c.Assert(events[0], checker.Contains, "type=bridge")
}

70
integration-cli/events_utils.go
View file

@ -10,6 +10,7 @@ import (
"strconv"
"strings"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/pkg/integration/checker"
"github.com/go-check/check"
)
@ -27,13 +28,15 @@ var (
)
// eventMatcher is a function that tries to match an event input.
type eventMatcher func(text string)
type eventMatcher func(text string) bool
// eventObserver runs an events commands and observes its output.
type eventObserver struct {
buffer *bytes.Buffer
command *exec.Cmd
stdout io.Reader
scanner *bufio.Scanner
startTime string
disconnectionError error
}
// newEventObserver creates the observer and initializes the command
@ -45,7 +48,8 @@ func newEventObserver(c *check.C, args ...string) (*eventObserver, error) {
// newEventObserverWithBacklog creates a new observer changing the start time of the backlog to return.
func newEventObserverWithBacklog(c *check.C, since int64, args ...string) (*eventObserver, error) {
cmdArgs := []string{"events", "--since", strconv.FormatInt(since, 10)}
startTime := strconv.FormatInt(since, 10)
cmdArgs := []string{"events", "--since", startTime}
if len(args) > 0 {
cmdArgs = append(cmdArgs, args...)
}
@ -58,7 +62,8 @@ func newEventObserverWithBacklog(c *check.C, since int64, args ...string) (*even
return &eventObserver{
buffer: new(bytes.Buffer),
command: eventsCmd,
stdout: stdout,
scanner: bufio.NewScanner(stdout),
startTime: startTime,
}, nil
}
@ -75,43 +80,61 @@ func (e *eventObserver) Stop() {
// Match tries to match the events output with a given matcher.
func (e *eventObserver) Match(match eventMatcher) {
scanner := bufio.NewScanner(e.stdout)
for scanner.Scan() {
text := scanner.Text()
for e.scanner.Scan() {
text := e.scanner.Text()
e.buffer.WriteString(text)
e.buffer.WriteString("\n")
match(text)
}
err := e.scanner.Err()
if err == nil {
err = io.EOF
}
// TimeoutError generates an error for a given containerID and event type.
// It attaches the events command output to the error.
func (e *eventObserver) TimeoutError(id, event string) error {
return fmt.Errorf("failed to observe event `%s` for %s\n%v", event, id, e.output())
logrus.Debug("EventObserver scanner loop finished: %v", err)
e.disconnectionError = err
}
// output returns the events command output read until now by the Match goroutine.
func (e *eventObserver) output() string {
return e.buffer.String()
func (e *eventObserver) CheckEventError(c *check.C, id, event string, match eventMatcher) {
var foundEvent bool
scannerOut := e.buffer.String()
if e.disconnectionError != nil {
until := strconv.FormatInt(daemonTime(c).Unix(), 10)
out, _ := dockerCmd(c, "events", "--since", e.startTime, "--until", until)
events := strings.Split(strings.TrimSpace(out), "\n")
for _, e := range events {
if match(e) {
foundEvent = true
break
}
}
scannerOut = out
}
if !foundEvent {
c.Fatalf("failed to observe event `%s` for %s. Disconnection error: %v\nout:\n%v", event, id, e.disconnectionError, scannerOut)
}
}
// matchEventLine matches a text with the event regular expression.
// It returns the action and true if the regular expression matches with the given id and event type.
// It returns an empty string and false if there is no match.
func matchEventLine(id, eventType string, actions map[string]chan bool) eventMatcher {
return func(text string) {
return func(text string) bool {
matches := parseEventText(text)
if matches == nil {
return
if len(matches) == 0 {
return false
}
if matchIDAndEventType(matches, id, eventType) {
if ch, ok := actions[matches["action"]]; ok {
close(ch)
return true
}
}
return false
}
}
@ -119,12 +142,12 @@ func matchEventLine(id, eventType string, actions map[string]chan bool) eventMat
// the matchers in a map.
func parseEventText(text string) map[string]string {
matches := eventCliRegexp.FindAllStringSubmatch(text, -1)
md := map[string]string{}
if len(matches) == 0 {
return nil
return md
}
names := eventCliRegexp.SubexpNames()
md := map[string]string{}
for i, n := range matches[0] {
md[names[i]] = n
}
@ -135,7 +158,6 @@ func parseEventText(text string) map[string]string {
// It fails if the text is not in the event format.
func parseEventAction(c *check.C, text string) string {
matches := parseEventText(text)
c.Assert(matches, checker.Not(checker.IsNil))
return matches["action"]
}
@ -177,10 +199,9 @@ func parseEvents(c *check.C, out, match string) {
events := strings.Split(strings.TrimSpace(out), "\n")
for _, event := range events {
matches := parseEventText(event)
c.Assert(matches, checker.Not(checker.IsNil))
matched, err := regexp.MatchString(match, matches["action"])
c.Assert(err, checker.IsNil)
c.Assert(matched, checker.True)
c.Assert(matched, checker.True, check.Commentf("Matcher: %s did not match %s", match, matches["action"]))
}
}
@ -188,11 +209,10 @@ func parseEventsWithID(c *check.C, out, match, id string) {
events := strings.Split(strings.TrimSpace(out), "\n")
for _, event := range events {
matches := parseEventText(event)
c.Assert(matches, checker.Not(checker.IsNil))
c.Assert(matchEventID(matches, id), checker.True)
matched, err := regexp.MatchString(match, matches["action"])
c.Assert(err, checker.IsNil)
c.Assert(matched, checker.True)
c.Assert(matched, checker.True, check.Commentf("Matcher: %s did not match %s", match, matches["action"]))
}
}