Golang log4go.Warn函數代碼示例

//握手包
func handshake(ga *c.GroupAuth, remoteClient *c.RemotingClient) (bool, error) {

	for i := 0; i < 3; i++ {
		p := protocol.MarshalConnMeta(ga.GroupId, ga.SecretKey)
		rpacket := packet.NewPacket(protocol.CMD_CONN_META, p)
		resp, err := remoteClient.WriteAndGet(*rpacket, 5*time.Second)
		if nil != err {
			//兩秒後重試
			time.Sleep(2 * time.Second)
			log.Warn("kiteClient|handShake|FAIL|%s|%s\n", ga.GroupId, err)
		} else {
			authAck, ok := resp.(*protocol.ConnAuthAck)
			if !ok {
				return false, errors.New("Unmatches Handshake Ack Type! ")
			} else {
				if authAck.GetStatus() {
					log.Info("kiteClient|handShake|SUCC|%s|%s\n", ga.GroupId, authAck.GetFeedback())
					return true, nil
				} else {
					log.Warn("kiteClient|handShake|FAIL|%s|%s\n", ga.GroupId, authAck.GetFeedback())
					return false, errors.New("Auth FAIL![" + authAck.GetFeedback() + "]")
				}
			}
		}
	}

	return false, errors.New("handshake fail! [" + remoteClient.RemoteAddr() + "]")
}

//remove segment
func (self *MessageStore) remove(s *Segment) {

	self.Lock()
	//remove from segments
	for i, s := range self.segments {
		if s.sid == s.sid {
			self.segments = append(self.segments[0:i], self.segments[i+1:]...)
			break
		}
	}
	//remove from cache
	for e := self.segmentCache.Front(); nil != e; e = e.Next() {
		cs := e.Value.(*Segment)
		if cs.sid == s.sid {
			self.segmentCache.Remove(e)
			break
		}
	}

	//close segment
	s.Close()

	err := os.Remove(s.path)
	if nil != err {
		log.Warn("MessageStore|Remove|Segment|FAIL|%s|%s", err, s.path)
	}
	err = os.Remove(s.slog.path)
	if nil != err {
		log.Warn("MessageStore|Remove|SegmentLog|FAIL|%s|%s", err, s.slog.path)
	}

	self.Unlock()
	log.Info("MessageStore|Remove|Segment|%s", s.path)
}

//訂閱關係改變
func (self *BindExchanger) onBindChanged(topic, groupId string, newbinds []*Binding) {

	if len(groupId) <= 0 {
		delete(self.exchanger, topic)
		return
	}

	//不是當前服務可以處理的topic則直接丟地啊哦
	if sort.SearchStrings(self.topics, topic) == len(self.topics) {
		log.Warn("BindExchanger|onBindChanged|UnAccept Bindings|%s|%s|%s\n", topic, self.topics, newbinds)
		return
	}

	v, ok := self.exchanger[topic]
	if !ok {
		v = make(map[string][]*Binding, 10)
		self.exchanger[topic] = v
	}

	if len(newbinds) > 0 {
		v[groupId] = newbinds
	} else {
		delete(v, groupId)
	}
}

func (self *RemotingHandler) Process(ctx *DefaultPipelineContext, event IEvent) error {

	revent, ok := self.cast(event)
	if !ok {
		return ERROR_INVALID_EVENT_TYPE
	}

	// log.Printf("RemotingHandler|Process|%s|%t\n", self.GetName(), revent)
	var futures map[string]*turbo.Future
	if len(revent.GroupIds) <= 0 && len(revent.TargetHost) <= 0 {
		log.Warn("RemotingHandler|%s|Process|NO GROUP OR HOSTS|%s|%s\n", self.GetName(), revent)
		futures = EMPTY_FUTURE
	} else {
		//發送數據
		futures = self.invokeGroup(revent)
	}
	//寫入future的響應
	revent.futures <- futures
	close(revent.futures)

	//創建創建網絡寫出結果
	fe := NewRemoteFutureEvent(revent, futures)
	ctx.SendForward(fe)
	return nil
}

func (self *ValidateHandler) Process(ctx *DefaultPipelineContext, event IEvent) error {

	aevent, ok := self.cast(event)
	if !ok {
		return ERROR_INVALID_EVENT_TYPE
	}

	remoteClient := aevent.getClient()
	//做權限校驗.............
	isAuth := self.clientManager.Validate(remoteClient)
	// log.DebugLog("kite_handler",  "ValidateHandler|CONNETION|%s|%s\n", remoteClient.RemoteAddr(), isAuth)
	if isAuth {
		ctx.SendForward(event)
	} else {
		log.Warn("ValidateHandler|UnAuth CONNETION|%s\n", remoteClient.RemoteAddr())
		cmd := protocol.MarshalConnAuthAck(false, "未授權的訪問,連接關閉!")
		//響應包
		p := packet.NewPacket(protocol.CMD_CONN_AUTH, cmd)

		//直接寫出去授權失敗
		remoteClient.Write(*p)
		//斷開連接
		remoteClient.Shutdown()
	}

	return nil

}

func (self *AccessHandler) Process(ctx *DefaultPipelineContext, event IEvent) error {

	// log.Debug("accessEvent|Process|%s|%t\n", self.GetName(), event)

	aevent, ok := self.cast(event)
	if !ok {
		return ERROR_INVALID_EVENT_TYPE
	}

	//做權限校驗.............
	if false {
		log.Warn("accessEvent|Process|INVALID AUTH|%s|%s\n", aevent.groupId, aevent.secretKey)
	}

	// 權限驗證通過 保存到clientmanager
	self.clientManager.Auth(client.NewGroupAuth(aevent.groupId, aevent.secretKey), aevent.remoteClient)

	// log.Info("accessEvent|Process|NEW CONNECTION|AUTH SUCC|%s|%s|%s\n", aevent.groupId, aevent.secretKey, aevent.remoteClient.RemoteAddr())

	cmd := protocol.MarshalConnAuthAck(true, "授權成功")
	//響應包
	packet := packet.NewRespPacket(aevent.opaque, protocol.CMD_CONN_AUTH, cmd)

	//向當前連接寫入當前包
	remoteEvent := NewRemotingEvent(packet, []string{aevent.remoteClient.RemoteAddr()})

	//向後走網絡傳輸
	ctx.SendForward(remoteEvent)
	return nil

}

func (self *ConnPool) enhancedPool(size int) error {

	//初始化一下最小的Poolsize,讓入到idlepool中
	for i := 0; i < size; i++ {
		j := 0
		var err error
		var conn IConn
		for ; j < 3; j++ {
			err, conn = self.dialFunc(self.id())
			if nil != err || nil == conn {
				log.Warn("POOL_FACTORY|CREATE CONNECTION|INIT|FAIL|%s", err)
				continue

			} else {
				break
			}
		}

		if j >= 3 || nil == conn {
			return errors.New("POOL_FACTORY|CREATE CONNECTION|INIT|FAIL|%s" + err.Error())
		}

		idleconn := &IdleConn{conn: conn, expiredTime: (time.Now().Add(self.idletime))}
		self.idlePool.PushFront(idleconn)
	}

	return nil
}

func (self *HeartbeatHandler) keepAlive() {

	for {
		select {
		case <-time.After(self.heartbeatPeriod):
			//心跳檢測
			func() {
				id := time.Now().Unix()
				clients := self.clientMangager.ClientsClone()
				p := protocol.MarshalHeartbeatPacket(id)
				for h, c := range clients {
					i := 0
					//關閉的時候發起重連
					if c.IsClosed() {
						i = 3
					} else {
						//如果是空閑的則發起心跳
						if c.Idle() {
							for ; i < 3; i++ {
								hp := packet.NewPacket(protocol.CMD_HEARTBEAT, p)
								err := c.Ping(hp, time.Duration(self.heartbeatTimeout))
								//如果有錯誤則需要記錄
								if nil != err {
									log.Warn("HeartbeatHandler|KeepAlive|FAIL|%s|local:%s|remote:%s|%d\n", err, c.LocalAddr(), h, id)
									continue
								} else {
									log.Info("HeartbeatHandler|KeepAlive|SUCC|local:%s|remote:%s|%d|%d ...\n", c.LocalAddr(), h, id, i)
									break
								}
							}
						}
					}
					if i >= 3 {
						//說明連接有問題需要重連
						c.Shutdown()
						self.clientMangager.SubmitReconnect(c)
						log.Warn("HeartbeatHandler|SubmitReconnect|%s\n", c.RemoteAddr())
					}
				}
			}()
		}
	}

}

//同步發起ping的命令
func (self *RemotingClient) Ping(heartbeat *packet.Packet, timeout time.Duration) error {
	pong, err := self.WriteAndGet(*heartbeat, timeout)
	if nil != err {
		return err
	}
	version, ok := pong.(int64)
	if !ok {
		log.Warn("RemotingClient|Ping|Pong|ERROR TYPE |%s\n", pong)
		return ERROR_PONG
	}
	self.updateHeartBeat(version)
	return nil
}

//traverse oplog
func (self *SegmentLog) Replay(do func(l *oplog)) {

	self.Open()
	offset := int64(0)
	tmp := make([]byte, 1024)
	//seek to head
	self.rf.Seek(0, 0)
	self.br.Reset(self.rf)

	for {
		var length int32
		err := binary.Read(self.br, binary.BigEndian, &length)
		if nil != err {
			if err == io.EOF {
				self.br.Reset(self.rf)
				break
			}
			log.Warn("SegmentLog|Replay|LEN|%s|Skip...", err)
			continue
		}

		// log.Debug("SegmentLog|Replay|LEN|%d", length)

		if int(length) > cap(tmp) {
			grow := make([]byte, int(length)-cap(tmp))
			tmp = append(tmp, grow...)
		}

		err = binary.Read(self.br, binary.BigEndian, tmp[:int(length)-4])
		if nil != err {
			self.br.Reset(self.rf)
			log.Error("SegmentLog|Replay|Data|%s", err)
			break
		}

		var ol oplog
		r := bytes.NewReader(tmp[:int(length)-4])
		deco := gob.NewDecoder(r)
		err = deco.Decode(&ol)
		if nil != err {
			log.Error("SegmentLog|Replay|unmarshal|oplog|FAIL|%s", err)
			continue
		}
		// log.Debug("SegmentLog|Replay|oplog|%s", ol)
		do(&ol)
		//line
		offset += int64(length)

	}
	self.offset = int64(offset)
}

func (self *BaseForwardHandler) HandleForward(ctx *DefaultPipelineContext, event IForwardEvent) error {

	//處理邏輯成功則向後傳遞
	if !self.processor.TypeAssert(event) {
		ctx.SendForward(event)
		return nil
	} else {
		now := time.Now().Unix()
		err := self.processor.Process(ctx, event)
		cost := time.Now().Unix() - now
		if cost > 100 {
			log.Warn("BaseForwardHandler|%s|cost:%d\n", self.GetName(), cost)
		}
		return err
	}
}

//監聽數據變更
func (self *ZKManager) listenEvent() {
	for !self.isClose {
		//根據zk的文檔 watcher機製是無法保證可靠的，其次需要在每次處理完watcher後要重新注冊watcher
		change := <-self.eventChan
		path := change.Path
		switch change.Type {
		case zk.EventSession:
			if change.State == zk.StateExpired {
				log.Warn("ZKManager|OnSessionExpired!")
				//zk鏈接開則需要重新鏈接重新推送
				self.watcher.OnSessionExpired()

			}
		case zk.EventNodeDeleted:
			self.session.ExistsW(path)
			self.watcher.NodeChange(path, ZkEvent(change.Type), []string{})
			// log.Info("ZKManager|listenEvent|%s|%s\n", path, change)
		case zk.EventNodeCreated, zk.EventNodeChildrenChanged:
			childnodes, _, _, err := self.session.ChildrenW(path)
			if nil != err {
				log.Error("ZKManager|listenEvent|CD|%s|%s|%t\n", err, path, change.Type)
			} else {
				self.watcher.NodeChange(path, ZkEvent(change.Type), childnodes)
				// log.Info("ZKManager|listenEvent|%s|%s|%s\n", path, change, childnodes)
			}

		case zk.EventNodeDataChanged:
			split := strings.Split(path, "/")
			//如果不是bind級別的變更則忽略
			if len(split) < 5 || strings.LastIndex(split[4], "-bind") <= 0 {
				continue
			}
			//獲取一下數據
			binds, err := self.getBindData(path)
			if nil != err {
				log.Error("ZKManager|listenEvent|Changed|Get DATA|FAIL|%s|%s\n", err, path)
				//忽略
				continue
			}
			self.watcher.DataChange(path, binds)
			// log.Info("ZKManager|listenEvent|%s|%s|%s\n", path, change, binds)

		}

	}

}

func (self *BindExchanger) DataChange(path string, binds []*Binding) {

	//訂閱關係變更才處理
	if strings.HasPrefix(path, KITEQ_SUB) {

		split := strings.Split(path, "/")
		//獲取topic
		topic := split[3]
		groupId := split[4]
		self.lock.Lock()
		defer self.lock.Unlock()
		//開始處理變化的訂閱關係
		self.onBindChanged(topic, groupId, binds)

	} else {
		log.Warn("BindExchanger|DataChange|非SUB節點變更|%s\n", path)
	}

}

func (self *ApnsConnection) sendMessage(msg *entry.Message) error {
	//將當前的msg強製設置為當前conn的id作為標識
	msg.ProcessId = self.connectionId

	err, packet := msg.Encode()
	if nil != err {
		return err
	}

	length, sendErr := self.conn.Write(packet)
	if nil != err || length != len(packet) {
		log.Warn("CONNECTION|SEND MESSAGE|FAIL|%s", err)
	} else {
		log.Debug("CONNECTION|SEND MESSAGE|SUCC")

	}

	return sendErr
}

/*
*重連zk
 */
func (self *ZKManager) reconnect() <-chan bool {
	ch := make(chan bool, 1)
	go func() {

		reconnTimes := int64(0)
		f := func() error {
			ss, eventChan, err := zk.Connect(strings.Split(self.zkhosts, ","), 5*time.Second)
			if nil != err {
				log.Warn("連接zk失敗.....%ds後重連任務重新發起...|", (reconnTimes+1)*5)
				return err
			} else {
				log.Info("重連ZK任務成功....")
				//初始化當前的狀態
				self.session = ss
				self.eventChan = eventChan

				ch <- true
				close(ch)
				return nil
			}

		}
		//啟動重連任務
		for !self.isClose {
			select {
			case <-time.After(time.Duration(reconnTimes * time.Second.Nanoseconds())):
				err := f()
				if nil != err {
					reconnTimes += 1
				} else {
					//重連成功則推出
					break
				}
			}
		}

		//失敗
		ch <- false
		close(ch)
	}()
	return ch
}