修改：delay 延时支持延时变更、取消事件

git-svn-id: svn://47.119.165.148/zhub@95 e63fbceb-bcc3-4977-ac22-735b83d8d0f4

zsub/msg-consumer.go

@@ -70,7 +70,7 @@ func msgAccept(v Message) {
 	case "broadcast":
 		zsub.broadcast(rcmd[1], rcmd[2])
 	case "daly":
-		daly(rcmd, c)
+		zsub.daly(rcmd, c)
 	case "timer":
 		zsub.timer(rcmd, c)
 	case "cmd":
@@ -88,7 +88,9 @@ func msgAccept(v Message) {
 }
 
 // daly topic value 100 -> publish topic value
-func daly(rcmd []string, c *ZConn) {
+func (s *ZSub) daly(rcmd []string, c *ZConn) {
+	s.Lock()
+	defer s.Unlock()
 	if len(rcmd) != 4 {
 		c.send("-Error: subscribe para number!")
 		return
@@ -100,10 +102,24 @@ func daly(rcmd []string, c *ZConn) {
 		return
 	}
 
-	timer := time.NewTimer(time.Duration(t) * time.Millisecond)
-	select {
-	case <-timer.C:
-		zsub.publish(rcmd[1], rcmd[2])
+	timer := s.delays[rcmd[1]+"-"+rcmd[2]]
+	if timer != nil {
+		if t == -1 {
+			timer.Stop()
+			s.delays[rcmd[1]+"-"+rcmd[2]] = nil
+			return
+		}
+		timer.Reset(time.Duration(t) * time.Millisecond)
+	} else {
+		timer = time.NewTimer(time.Duration(t) * time.Millisecond)
+		s.delays[rcmd[1]+"-"+rcmd[2]] = timer
+		go func() {
+			select {
+			case <-timer.C:
+				zsub.publish(rcmd[1], rcmd[2])
+				s.delays[rcmd[1]+"-"+rcmd[2]] = nil
+			}
+		}()
 	}
 }