func StartChannelSenderStage0(channel_name string, stage0_channel, stage1_channel chan *lib.PostMessage) chan bool {
close_chan := make(chan bool)
go func() {
defer func() {
if err := recover(); err != nil {
utils.Log.Println(err)
debug.PrintStack()
}
}()
var post_message *lib.PostMessage
var new_post_message *lib.PostMessage
channel := GetChannel(channel_name)
for {
select {
case <-close_chan:
utils.Log.Printf("Channel [%s] SenderStage0 has quit...\n", channel_name)
close_chan <- true
return
case post_message = <-stage0_channel:
post_message.Lock = new(isync.SpinLock)
stage1_channel <- post_message
channel.LastPostUpdate = time.Now().Unix()
if channel.MQTTMessageChan != nil {
new_post_message = CopyMessage(channel, post_message)
channel.MQTTMessageChan <- new_post_message
}
if ServerDebug {
utils.Log.Println("ChannelSenderStage0: send post_message to stage1_channel", post_message)
}
}
}
}()
return close_chan
}
