func startJob(s *State, hc *cluster.Host, job *host.Job) error {
jobStatus := make(chan error)
events := make(chan *host.Event)
stream, err := hc.StreamEvents(job.ID, events)
if err != nil {
return err
}
go func() {
defer stream.Close()
loop:
for {
select {
case e, ok := <-events:
if !ok {
break loop
}
switch e.Event {
case "start", "stop":
jobStatus <- nil
return
case "error":
job, err := hc.GetJob(job.ID)
if err != nil {
jobStatus <- err
return
}
if job.Error == nil {
jobStatus <- fmt.Errorf("bootstrap: unknown error from host")
return
}
jobStatus <- fmt.Errorf("bootstrap: host error while launching job: %q", *job.Error)
return
default:
}
case <-time.After(30 * time.Second):
jobStatus <- errors.New("bootstrap: timed out waiting for job event")
return
}
}
jobStatus <- fmt.Errorf("bootstrap: host job stream disconnected unexpectedly: %q", stream.Err())
}()
if err := hc.AddJob(job); err != nil {
return err
}
return <-jobStatus
}
func startJob(s *State, hc *cluster.Host, job *host.Job) (*Job, error) {
data := &Job{HostID: hc.ID(), JobID: job.ID}
jobStatus := make(chan error)
events := make(chan *host.Event)
stream, err := hc.StreamEvents(data.JobID, events)
if err != nil {
return nil, err
}
go func() {
defer stream.Close()
for e := range events {
switch e.Event {
case "start", "stop":
jobStatus <- nil
return
case "error":
job, err := hc.GetJob(data.JobID)
if err != nil {
jobStatus <- err
return
}
if job.Error == nil {
jobStatus <- fmt.Errorf("bootstrap: unknown error from host")
return
}
jobStatus <- fmt.Errorf("bootstrap: host error while launching job: %q", *job.Error)
return
default:
}
}
jobStatus <- fmt.Errorf("bootstrap: host job stream disconnected unexpectedly: %q", stream.Err())
}()
if err := hc.AddJob(job); err != nil {
return nil, err
}
return data, <-jobStatus
}