func maintainPresence(bbs bbs.ExecutorBBS, ready chan<- bool) error {
p, statusChannel, err := bbs.MaintainExecutorPresence(*heartbeatInterval, executorID)
if err != nil {
ready <- false
return err
}
tasks.Add(1)
go func() {
for {
select {
case locked, ok := <-statusChannel:
if locked && ready != nil {
ready <- true
ready = nil
}
if !locked && ok {
tasks.Done()
logger.Fatal("maintain.presence.fatal", map[string]interface{}{})
}
if !ok {
tasks.Done()
return
}
case <-stop:
p.Remove()
for _ = range statusChannel {
}
tasks.Done()
return
}
}
}()
return nil
}
