func (s *HostSuite) TestAttachFinishedInteractiveJob(t *c.C) {
cluster := s.clusterClient(t)
// run a quick interactive job
cmd := exec.CommandUsingCluster(cluster, exec.DockerImage(imageURIs["test-apps"]), "/bin/true")
cmd.TTY = true
runErr := make(chan error)
go func() {
runErr <- cmd.Run()
}()
select {
case err := <-runErr:
t.Assert(err, c.IsNil)
case <-time.After(30 * time.Second):
t.Fatal("timed out waiting for interactive job")
}
h, err := cluster.Host(cmd.HostID)
t.Assert(err, c.IsNil)
// Getting the logs for the job should fail, as it has none because it was
// interactive
attachErr := make(chan error)
go func() {
_, err = h.Attach(&host.AttachReq{JobID: cmd.Job.ID, Flags: host.AttachFlagLogs}, false)
attachErr <- err
}()
select {
case err := <-attachErr:
t.Assert(err, c.NotNil)
case <-time.After(time.Second):
t.Error("timed out waiting for attach")
}
}
func (s *HostSuite) TestDevStdout(t *c.C) {
cmd := exec.CommandUsingCluster(
s.clusterClient(t),
s.createArtifact(t, "test-apps"),
"sh",
)
cmd.Stdin = strings.NewReader(`
echo foo > /dev/stdout
echo bar > /dev/stderr
echo "SUBSHELL: $(echo baz > /dev/stdout)"
echo "SUBSHELL: $(echo qux 2>&1 > /dev/stderr)" >&2`)
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
runErr := make(chan error)
go func() {
runErr <- cmd.Run()
}()
select {
case err := <-runErr:
t.Assert(err, c.IsNil)
case <-time.After(30 * time.Second):
t.Fatal("timed out waiting for /dev/stdout job")
}
t.Assert(stdout.String(), c.Equals, "foo\nSUBSHELL: baz\n")
t.Assert(stderr.String(), c.Equals, "bar\nSUBSHELL: qux\n")
}
func (s *ControllerSuite) generateControllerExamples(t *c.C) map[string]interface{} {
cmd := exec.CommandUsingCluster(
s.clusterClient(t),
s.createArtifact(t, "controller-examples"),
"/bin/flynn-controller-examples",
)
cmd.Env = map[string]string{
"CONTROLLER_KEY": s.clusterConf(t).Key,
"SKIP_MIGRATE_DOMAIN": "true",
}
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
t.Logf("stdout: %q", stdout.String())
t.Logf("stderr: %q", stderr.String())
t.Assert(err, c.IsNil)
var controllerExamples map[string]json.RawMessage
t.Assert(json.Unmarshal(stdout.Bytes(), &controllerExamples), c.IsNil)
examples := make(map[string]interface{}, len(controllerExamples))
for key, data := range controllerExamples {
example, err := unmarshalControllerExample(data)
t.Assert(err, c.IsNil)
examples[key] = example
}
return examples
}
func (s *HostSuite) TestExecCrashingJob(t *c.C) {
cluster := s.clusterClient(t)
for _, attach := range []bool{true, false} {
t.Logf("attach = %v", attach)
cmd := exec.CommandUsingCluster(cluster, exec.DockerImage(imageURIs["test-apps"]), "sh", "-c", "exit 1")
if attach {
cmd.Stdout = ioutil.Discard
cmd.Stderr = ioutil.Discard
}
t.Assert(cmd.Run(), c.DeepEquals, exec.ExitError(1))
}
}
func (s *HostSuite) TestDevSHM(t *c.C) {
cmd := exec.CommandUsingCluster(
s.clusterClient(t),
exec.DockerImage(imageURIs["test-apps"]),
"sh", "-c", "df -h /dev/shm && echo foo > /dev/shm/asdf",
)
var out bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &out
runErr := make(chan error)
go func() {
runErr <- cmd.Run()
}()
select {
case err := <-runErr:
t.Assert(err, c.IsNil)
case <-time.After(30 * time.Second):
t.Fatal("timed out waiting for /dev/shm job")
}
t.Assert(out.String(), c.Equals, "Filesystem Size Used Available Use% Mounted on\nshm 64.0M 0 64.0M 0% /dev/shm\n")
}
func (s *HostSuite) TestDevStdout(t *c.C) {
cmd := exec.CommandUsingCluster(
s.clusterClient(t),
exec.DockerImage(imageURIs["test-apps"]),
"sh", "-c", "echo foo > /dev/stdout; echo bar > /dev/stderr",
)
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
runErr := make(chan error)
go func() {
runErr <- cmd.Run()
}()
select {
case err := <-runErr:
t.Assert(err, c.IsNil)
case <-time.After(30 * time.Second):
t.Fatal("timed out waiting for /dev/stdout job")
}
t.Assert(stdout.String(), c.Equals, "foo\n")
t.Assert(stderr.String(), c.Equals, "bar\n")
}
func (s *HostSuite) TestNotifyOOM(t *c.C) {
appID := random.UUID()
// subscribe to init log messages from the logaggregator
client, err := logaggc.New("")
t.Assert(err, c.IsNil)
opts := logagg.LogOpts{
Follow: true,
StreamTypes: []logagg.StreamType{logagg.StreamTypeInit},
}
rc, err := client.GetLog(appID, &opts)
t.Assert(err, c.IsNil)
defer rc.Close()
msgs := make(chan *logaggc.Message)
stream := stream.New()
defer stream.Close()
go func() {
defer close(msgs)
dec := json.NewDecoder(rc)
for {
var msg logaggc.Message
if err := dec.Decode(&msg); err != nil {
stream.Error = err
return
}
select {
case msgs <- &msg:
case <-stream.StopCh:
return
}
}
}()
// run the OOM job
cmd := exec.CommandUsingCluster(
s.clusterClient(t),
s.createArtifact(t, "test-apps"),
"/bin/oom",
)
cmd.Meta = map[string]string{"flynn-controller.app": appID}
runErr := make(chan error)
go func() {
runErr <- cmd.Run()
}()
// wait for the OOM notification
for {
select {
case err := <-runErr:
t.Assert(err, c.IsNil)
case msg, ok := <-msgs:
if !ok {
t.Fatalf("message stream closed unexpectedly: %s", stream.Err())
}
t.Log(msg.Msg)
if strings.Contains(msg.Msg, "FATAL: a container process was killed due to lack of available memory") {
return
}
case <-time.After(30 * time.Second):
t.Fatal("timed out waiting for OOM notification")
}
}
}