Refresh is also an operation

Author: supermeng

engine/podgroup.go

@@ -297,6 +297,7 @@ func (pgCtrl *podGroupController) Refresh(force bool) {
 	if pgCtrl.IsRemoved() || pgCtrl.IsPending() {
 		return
 	}
+	pgCtrl.emitOperationEvent(OperationStart)
 	pgCtrl.DisableRefresh()
 	defer func() {
 		pgCtrl.opsChan <- pgOperOver{}

engine/runtimes.go

@@ -14,16 +14,16 @@ type PGOpState int32
 var RestartMaxCount int
 
 const (
-	RunStatePending = iota
-	RunStateDrift
-	RunStateSuccess
-	RunStateExit
-	RunStateFail
-	RunStateInconsistent
-	RunStateMissing
-	RunStateRemoved
-	RunStatePaused
-	RunStateError // call docker interface with error
+	RunStatePending = iota // waiting for operation
+	RunStateDrift          // drifting from one node to another
+	RunStateSuccess        // ok
+	RunStateExit           // exited
+	RunStateFail           // start failed with error
+	RunStateInconsistent   // container's state is different between deployd and swarm
+	RunStateMissing        // container is missing and need create it. happened when node down .etc
+	RunStateRemoved        // removed
+	RunStatePaused         // paused
+	RunStateError          // call docker interface with error
 )
 
 const (