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package system // import "github.com/docker/docker/integration/system"
import (
"context"
"encoding/json"
"errors"
"io"
"net/http"
"net/url"
"strconv"
"testing"
"time"
containertypes "github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/events"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/api/types/mount"
"github.com/docker/docker/api/types/volume"
"github.com/docker/docker/integration/internal/container"
"github.com/docker/docker/pkg/jsonmessage"
"github.com/docker/docker/testutil/request"
req "github.com/docker/docker/testutil/request"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
"gotest.tools/v3/skip"
)
func TestEventsExecDie(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType == "windows", "FIXME. Suspect may need to wait until container is running before exec")
ctx := setupTest(t)
client := testEnv.APIClient()
cID := container.Run(ctx, t, client)
id, err := client.ContainerExecCreate(ctx, cID, containertypes.ExecOptions{
Cmd: []string{"echo", "hello"},
})
assert.NilError(t, err)
msg, errs := client.Events(ctx, events.ListOptions{
Filters: filters.NewArgs(
filters.Arg("container", cID),
filters.Arg("event", string(events.ActionExecDie)),
),
})
err = client.ContainerExecStart(ctx, id.ID, containertypes.ExecStartOptions{
Detach: true,
Tty: false,
})
assert.NilError(t, err)
select {
case m := <-msg:
assert.Equal(t, m.Type, events.ContainerEventType)
assert.Equal(t, m.Actor.ID, cID)
assert.Equal(t, m.Action, events.ActionExecDie)
assert.Equal(t, m.Actor.Attributes["execID"], id.ID)
assert.Equal(t, m.Actor.Attributes["exitCode"], "0")
case err = <-errs:
assert.NilError(t, err)
case <-time.After(time.Second * 3):
t.Fatal("timeout hit")
}
}
// Test case for #18888: Events messages have been switched from generic
// `JSONMessage` to `events.Message` types. The switch does not break the
// backward compatibility so old `JSONMessage` could still be used.
// This test verifies that backward compatibility maintains.
func TestEventsBackwardsCompatible(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType == "windows", "Windows doesn't support back-compat messages")
ctx := setupTest(t)
client := testEnv.APIClient()
since := request.DaemonTime(ctx, t, client, testEnv)
ts := strconv.FormatInt(since.Unix(), 10)
cID := container.Create(ctx, t, client)
// In case there is no events, the API should have responded immediately (not blocking),
// The test here makes sure the response time is less than 3 sec.
expectedTime := time.Now().Add(3 * time.Second)
emptyResp, emptyBody, err := req.Get(ctx, "/events")
assert.NilError(t, err)
defer emptyBody.Close()
assert.Check(t, is.DeepEqual(http.StatusOK, emptyResp.StatusCode))
assert.Check(t, time.Now().Before(expectedTime), "timeout waiting for events api to respond, should have responded immediately")
// We also test to make sure the `events.Message` is compatible with `JSONMessage`
q := url.Values{}
q.Set("since", ts)
_, body, err := req.Get(ctx, "/events?"+q.Encode())
assert.NilError(t, err)
defer body.Close()
dec := json.NewDecoder(body)
var containerCreateEvent *jsonmessage.JSONMessage
for {
var event jsonmessage.JSONMessage
if err := dec.Decode(&event); err != nil {
if err == io.EOF {
break
}
assert.NilError(t, err)
}
if event.Status == "create" && event.ID == cID {
containerCreateEvent = &event
break
}
}
assert.Assert(t, containerCreateEvent != nil)
assert.Check(t, is.Equal("create", containerCreateEvent.Status))
assert.Check(t, is.Equal(cID, containerCreateEvent.ID))
assert.Check(t, is.Equal("busybox", containerCreateEvent.From))
}
// TestEventsVolumeCreate verifies that volume create events are only fired
// once: when creating the volume, and not when attaching to a container.
func TestEventsVolumeCreate(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType == "windows", "FIXME: Windows doesn't trigger the events? Could be a race")
ctx := setupTest(t)
ctx, cancel := context.WithCancel(ctx)
defer cancel()
client := testEnv.APIClient()
since := request.DaemonUnixTime(ctx, t, client, testEnv)
volName := t.Name()
getEvents := func(messages <-chan events.Message, errs <-chan error) ([]events.Message, error) {
var evts []events.Message
for {
select {
case m := <-messages:
evts = append(evts, m)
case err := <-errs:
if err == io.EOF {
return evts, nil
}
return nil, err
case <-time.After(time.Second * 3):
return nil, errors.New("timeout hit")
}
}
}
_, err := client.VolumeCreate(ctx, volume.CreateOptions{Name: volName})
assert.NilError(t, err)
filter := filters.NewArgs(
filters.Arg("type", "volume"),
filters.Arg("event", "create"),
filters.Arg("volume", volName),
)
messages, errs := client.Events(ctx, events.ListOptions{
Since: since,
Until: request.DaemonUnixTime(ctx, t, client, testEnv),
Filters: filter,
})
volEvents, err := getEvents(messages, errs)
assert.NilError(t, err)
assert.Equal(t, len(volEvents), 1, "expected volume create event when creating a volume")
container.Create(ctx, t, client, container.WithMount(mount.Mount{
Type: mount.TypeVolume,
Source: volName,
Target: "/tmp/foo",
}))
messages, errs = client.Events(ctx, events.ListOptions{
Since: since,
Until: request.DaemonUnixTime(ctx, t, client, testEnv),
Filters: filter,
})
volEvents, err = getEvents(messages, errs)
assert.NilError(t, err)
assert.Equal(t, len(volEvents), 1, "expected volume create event to be fired only once")
}
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