implemented some more control channel handler in server.go

hodu.go

@@ -17,11 +17,11 @@ const (
 )
 
 type Logger interface {
-	Write (id string, level LogLevel, fmtstr string, args ...interface{})
+	Write(id string, level LogLevel, fmtstr string, args ...interface{})
 }
 
 type Service interface {
-	RunTask (wg *sync.WaitGroup) // blocking. run the actual task loop. it must call wg.Done() upon exit from itself.
+	RunTask(wg *sync.WaitGroup) // blocking. run the actual task loop. it must call wg.Done() upon exit from itself.
 	StartService(data interface{}) // non-blocking. spin up a service. it may be invokded multiple times for multiple instances
 	StopServices() // non-blocking. send stop request to all services spun up
 	WaitForTermination() // blocking. must wait until all services are stopped