// the goroutine cycle absolutely safe, no panic no error to quit.
func ExampleWorkerContainer_safe() {
var wc core.WorkerContainer
wc.GFork("myservice", func(wc core.WorkerContainer) {
defer func() {
if r := recover(); r != nil {
// log the r and ignore.
return
}
}()
for {
select {
case <-time.After(3 * time.Second):
// select other channel, do something cycle to get error.
if err := error(nil); err != nil {
// recoverable error, log it only and continue or return.
continue
}
case <-wc.QC():
// when got a quit signal, break the loop.
// and must notify the container again for other workers
// in container to quit.
wc.Quit()
return
}
}
})
}
// the goroutine cycle notify container to quit when error.
func ExampleWorkerContainer_fatal() {
var wc core.WorkerContainer
wc.GFork("myservice", func(wc core.WorkerContainer) {
for {
select {
case <-time.After(3 * time.Second):
// select other channel, do something cycle to get error.
if err := error(nil); err != nil {
// when got none-recoverable error, notify container to quit.
wc.Quit()
return
}
case <-wc.QC():
// when got a quit signal, break the loop.
// and must notify the container again for other workers
// in container to quit.
wc.Quit()
return
}
}
})
}
func (s *Server) Initialize() (err error) {
s.lock.Lock()
defer s.lock.Unlock()
if s.closed != StateInit {
panic("server invalid state.")
}
// about the runtime.
if err = s.initializeRuntime(); err != nil {
return
}
// use worker container to fork.
var wc core.WorkerContainer = s
// reload goroutine
wc.GFork("reload", core.Conf.ReloadCycle)
// heartbeat goroutine
wc.GFork("htbt(discovery)", s.htbt.discoveryCycle)
wc.GFork("htbt(main)", s.htbt.beatCycle)
// open rtmp agent.
if err = s.rtmp.Open(); err != nil {
core.Error.Println("open rtmp agent failed. err is", err)
return
}
c := core.Conf
l := fmt.Sprintf("%v(%v/%v)", c.Log.Tank, c.Log.Level, c.Log.File)
if !c.LogToFile() {
l = fmt.Sprintf("%v(%v)", c.Log.Tank, c.Log.Level)
}
core.Trace.Println(fmt.Sprintf("init server ok, conf=%v, log=%v, workers=%v/%v, gc=%v/%v%%, daemon=%v",
c.Conf(), l, c.Workers, runtime.NumCPU(), c.Go.GcInterval, c.Go.GcPercent, c.Daemon))
// set to ready, requires cleanup.
s.closed = StateReady
return
}
