Example #1
0
func (this *NodeManager) sendMsg(nodeId string, data *[]byte, c engine.Controller) {
	session, ok := c.GetSession(nodeId)
	if !ok {
		fmt.Println("这个session已经不存在了:", nodeId)
		return
	}
	err := session.Send(FindNodeNum, data)
	if err != nil {
		fmt.Println("node发送数据出错:", err.Error())
	}
}
Example #2
0
/*
	检查该消息是否是自己的
	不是自己的则自动转发出去
*/
func IsSendToSelf(c engine.Controller, msg engine.GetPacket) bool {
	messageRecv := new(Message)
	err := json.Unmarshal(msg.Date, messageRecv)
	if err != nil {
		fmt.Println(err)
		return false
	}
	if nodeStore.ParseId(nodeStore.GetRootIdInfoString()) == messageRecv.TargetId {
		//是自己的消息,处理这个消息
		return true
	} else {
		//先判断自己是不是超级节点
		if !nodeStore.Root.IsSuper {
			fmt.Println("super name:", nodeStore.SuperName)
			if session, ok := c.GetSession(nodeStore.SuperName); ok {
				err := session.Send(SendMessageNum, &msg.Date)
				if err != nil {
					fmt.Println("message发送数据出错:", err.Error())
				}
			} else {
				fmt.Println("超级节点不在了")
				//超级节点都不在了,搞个锤子
			}
			return false
		}
		//先判断是否在自己的代理节点中
		if targetNode, ok := nodeStore.GetProxyNode(messageRecv.TargetId); ok {
			if session, ok := c.GetSession(string(targetNode.IdInfo.Build())); ok {
				err := session.Send(SendMessageNum, &msg.Date)
				if err != nil {
					fmt.Println("message发送数据出错:", err.Error())
				}
			} else {
				//这个节点离线了,想办法处理下
			}
			return false
		}
		// fmt.Println("把消息转发出去")
		//最后转发出去
		targetNode := nodeStore.Get(messageRecv.TargetId, true, "")
		if targetNode == nil {
			return false
		}
		if string(targetNode.IdInfo.Build()) == nodeStore.GetRootIdInfoString() {
			targetNode = nodeStore.GetInAll(messageRecv.TargetId, true, "")
			if string(targetNode.IdInfo.Build()) == nodeStore.GetRootIdInfoString() {
				if !messageRecv.Accurate {
					return true
				} else {
					fmt.Println("这个精确发送的消息没人接收")
				}
				return false
			}
		}
		// session, ok := c.GetSession(hex.EncodeToString(targetNode.NodeId.Bytes()))
		session, ok := c.GetSession(string(targetNode.IdInfo.Build()))
		if !ok {
			return false
		}
		// fmt.Println(session.GetName())
		err := session.Send(SendMessageNum, &msg.Date)
		if err != nil {
			fmt.Println("message发送数据出错:", err.Error())
		}
		return false
	}
}
Example #3
0
/*
	自己保存这个节点,只能保存超级节点
*/
func (this *NodeManager) saveNode(findNode *FindNode, c engine.Controller) {
	//自己不是超级节点
	if !nodeStore.Root.IsSuper {
		//代理节点查找的备用超级节点
		// if findNode.WantId == "left" || findNode.WantId == "right" {
		// 	fmt.Println("添加备用节点:", nodeStore.ParseId(findNode.FindId))
		// 	// store.AddNode(node)
		// 	// return
		// }
		//查找到的节点和自己的超级节点不一样,则连接新的超级节点
		if nodeStore.SuperName != findNode.FindId {
			oldSuperName := nodeStore.SuperName
			session, _ := c.GetNet().AddClientConn(findNode.Addr, nodeStore.GetRootIdInfoString(), findNode.TcpPort, false)

			nodeStore.SuperName = session.GetName()
			if _, ok := c.GetNet().GetSession(nodeStore.SuperName); ok {
			}
			if session, ok := c.GetNet().GetSession(oldSuperName); ok {
				session.Close()
			}
			return
		}

	}

	findNodeIdInfo := new(nodeStore.IdInfo)
	json.Unmarshal([]byte(findNode.FindId), findNodeIdInfo)
	// nodeStore.Parse(findNode.FindId)
	// shouldNodeInt, _ := new(big.Int).SetString(findNode.FindId, nodeStore.IdStrBit)
	newNode := &nodeStore.Node{
		IdInfo:  *findNodeIdInfo,
		IsSuper: findNode.IsSuper,
		Addr:    findNode.Addr,
		TcpPort: findNode.TcpPort,
		UdpPort: findNode.UdpPort,
	}
	//是否需要这个节点
	if isNeed, replace := nodeStore.CheckNeedNode(findNodeIdInfo.GetId()); isNeed {
		//------------start--------------------------
		//这一块只为打印一个日志,可以去掉
		// ishave := false
		// for _, value := range nodeStore.GetAllNodes() {
		// 	if value.IdInfo.GetId() == findNodeIdInfo.GetId() {
		// 		ishave = true
		// 		break
		// 	}
		// }
		// if ishave {
		// 	fmt.Println("需要这个节点", findNodeIdInfo.GetId())
		// }
		//------------end--------------------------
		nodeStore.AddNode(newNode)
		//把替换的节点连接删除
		if replace != "" {
			//是否要替换超级节点
			if session, ok := c.GetNet().GetSession(nodeStore.SuperName); ok {
				if replace == session.GetName() {
					session.Close()
					session, _ := c.GetNet().AddClientConn(newNode.Addr, nodeStore.GetRootIdInfoString(), newNode.TcpPort, false)
					nodeStore.SuperName = session.GetName()
					introduceSelf(session)
				}
			}
			if session, ok := c.GetSession(replace); ok {
				session.Close()
				nodeStore.DelNode(replace)
			}
		}
		if nodeStore.Root.IsSuper {
			//自己不会连接自己
			if nodeStore.GetRootIdInfoString() == string(newNode.IdInfo.Build()) {
				return
			}
			//检查这个session是否存在
			if _, ok := c.GetNet().GetSession(string(newNode.IdInfo.Build())); !ok {
				session, err := c.GetNet().AddClientConn(newNode.Addr, nodeStore.GetRootIdInfoString(), newNode.TcpPort, false)
				if err != nil {
					fmt.Println(newNode)
					fmt.Println("连接客户端出错")
				} else {
					introduceSelf(session)
				}
			}
		}
	}
}
Example #4
0
//查找结点消息
func (this *NodeManager) FindNode(c engine.Controller, msg engine.GetPacket) {
	findNode := new(FindNode)
	json.Unmarshal(msg.Date, findNode)

	findNodeIdInfo := new(nodeStore.IdInfo)
	json.Unmarshal([]byte(findNode.NodeId), findNodeIdInfo)

	// proto.Unmarshal(msg.Date, findNode)
	// store := c.GetAttribute("nodeStore").(*nodeStore.NodeManager)
	//--------------------------------------------
	//    接收查找请求
	//--------------------------------------------
	if findNode.FindId != "" {
		//普通节点收到自己发出的代理查找请求
		if findNode.IsProxy && (findNode.ProxyId == nodeStore.GetRootIdInfoString()) {
			//自己保存这个节点
			this.saveNode(findNode, c)
			// if nodeStore.SuperName != findNode.FindId {
			// 	fmt.Println("自己获得的超级节点:", findNode.FindId)
			// }
			return
		}
		//是自己发出的非代理查找请求
		if findNode.NodeId == nodeStore.GetRootIdInfoString() {
			//是自己的代理节点发的请求
			if findNode.IsProxy {
				this.sendMsg(findNode.ProxyId, &msg.Date, c)
				return
			}
			//不是代理查找,自己接收这个
			// fmt.Println("找到一个节点:", findNode.GetFindId())
			this.saveNode(findNode, c)
			return
		}
		//不是自己发出的查找请求转发粗去
		//查找除了刚发过来的节点并且包括自己,的临近结点
		targetNode := nodeStore.Get(findNode.WantId, true, nodeStore.ParseId(msg.Name))
		//查找的就是自己,但这个节点已经下线
		// if hex.EncodeToString(targetNode.NodeId.Bytes()) == store.GetRootId() {
		if targetNode.IdInfo.GetId() == nodeStore.ParseId(nodeStore.GetRootIdInfoString()) {
			//这里要想个办法解决下
			fmt.Println("想办法解决下这个问题")
			fmt.Println("from:", nodeStore.ParseId(findNode.ProxyId), "\nwantId: ", findNode.WantId, "\ntargerNodeid: ", targetNode.IdInfo.GetId())
			// fmt.Println(findNode)
			return
		}
		//转发粗去
		this.sendMsg(string(targetNode.IdInfo.Build()), &msg.Date, c)
		return
	}

	//--------------------------------------------
	//    发出查找请求
	//--------------------------------------------
	//--------------------------------------------
	//    查找邻居节点
	//--------------------------------------------
	if findNode.WantId == "left" || findNode.WantId == "right" {
		//需要查找的节点id
		nodeIdInt, _ := new(big.Int).SetString(nodeStore.ParseId(findNode.ProxyId), nodeStore.IdStrBit)
		var nodes []*nodeStore.Node
		//查找左邻居节点
		if findNode.WantId == "left" {
			nodes = nodeStore.GetLeftNode(*nodeIdInt, nodeStore.MaxRecentCount)
			if nodes == nil {
				return
			}
		}
		//查找右邻居节点
		if findNode.WantId == "right" {
			nodes = nodeStore.GetRightNode(*nodeIdInt, nodeStore.MaxRecentCount)
			if nodes == nil {
				return
			}
		}
		//把找到的邻居节点返回给查找者
		for _, nodeOne := range nodes {
			rspMsg := FindNode{
				NodeId:  findNode.NodeId,
				WantId:  findNode.WantId,
				FindId:  string(nodeOne.IdInfo.Build()),
				IsProxy: findNode.IsProxy,
				ProxyId: findNode.ProxyId,
				Addr:    nodeOne.Addr,
				IsSuper: nodeOne.IsSuper,
				TcpPort: int32(nodeOne.TcpPort),
				UdpPort: int32(nodeOne.UdpPort),
			}
			resultBytes, _ := json.Marshal(&rspMsg)
			this.sendMsg(msg.Name, &resultBytes, c)
		}
		return
	}

	//自己的代理节点发过来的代理查找请求
	if findNode.IsProxy && (msg.Name == findNode.ProxyId) {
		if findNode.WantId == "left" || findNode.WantId == "right" {
			fmt.Println(findNode.WantId)
		}
		//超级节点刚上线
		if findNode.IsSuper {
			newNode := FindNode{
				NodeId:  findNode.ProxyId,
				WantId:  findNode.WantId,
				FindId:  findNode.ProxyId,
				IsProxy: findNode.IsProxy,
				ProxyId: findNode.ProxyId,
				Addr:    findNode.Addr,
				IsSuper: findNode.IsSuper,
				TcpPort: findNode.TcpPort,
				UdpPort: findNode.UdpPort,
			}
			this.saveNode(&newNode, c)
		}
		//查找超级节点并且包括自己,的临近结点
		targetNode := nodeStore.Get(findNode.WantId, true, nodeStore.ParseId(findNode.ProxyId))
		//要查找的节点就是自己,则发送给自己的代理节点
		if targetNode.IdInfo.GetId() == nodeStore.ParseId(nodeStore.GetRootIdInfoString()) {
			// fmt.Println("自己的代理节点发出的查找请求查找到临近结点:", targetNode.NodeId.String())
			rspMsg := FindNode{
				NodeId:  findNode.NodeId,
				WantId:  findNode.WantId,
				FindId:  nodeStore.GetRootIdInfoString(),
				IsProxy: findNode.IsProxy,
				ProxyId: findNode.ProxyId,
				Addr:    nodeStore.Root.Addr,
				IsSuper: nodeStore.Root.IsSuper,
				TcpPort: nodeStore.Root.TcpPort,
				UdpPort: nodeStore.Root.UdpPort,
			}
			resultBytes, _ := json.Marshal(&rspMsg)
			this.sendMsg(msg.Name, &resultBytes, c)
			//是自己的代理节点
			if !findNode.IsSuper {
				if _, ok := c.GetSession(findNode.ProxyId); ok {
					fmt.Println("添加一个代理节点")
					findNodeIdInfo := new(nodeStore.IdInfo)
					json.Unmarshal([]byte(findNode.ProxyId), findNodeIdInfo)
					newNode := &nodeStore.Node{
						IdInfo:  *findNodeIdInfo,
						IsSuper: findNode.IsSuper,
						Addr:    findNode.Addr,
						TcpPort: findNode.TcpPort,
						UdpPort: findNode.UdpPort,
					}
					nodeStore.AddProxyNode(newNode)
				}
			}
			return
		}
		//转发代理查找请求
		rspMsg := FindNode{
			// NodeId:  nodeStore.GetRootIdInfoString(),
			NodeId:  findNode.NodeId,
			WantId:  findNode.WantId,
			IsProxy: findNode.IsProxy,
			ProxyId: findNode.ProxyId,
		}
		resultBytes, _ := json.Marshal(&rspMsg)
		this.sendMsg(string(targetNode.IdInfo.Build()), &resultBytes, c)
		return
	}

	//查找除了客户端节点并且包括自己的临近结点
	targetNode := nodeStore.Get(findNode.WantId, true, nodeStore.ParseId(msg.Name))
	//要查找的节点就是自己
	if targetNode.IdInfo.GetId() == nodeStore.ParseId(nodeStore.GetRootIdInfoString()) {
		rspMsg := FindNode{
			NodeId:  findNode.NodeId,
			WantId:  findNode.WantId,
			FindId:  nodeStore.GetRootIdInfoString(),
			IsProxy: findNode.IsProxy,
			ProxyId: findNode.ProxyId,
			Addr:    nodeStore.Root.Addr,
			IsSuper: nodeStore.Root.IsSuper,
			TcpPort: nodeStore.Root.TcpPort,
			UdpPort: nodeStore.Root.UdpPort,
		}
		resultBytes, _ := json.Marshal(&rspMsg)
		this.sendMsg(msg.Name, &resultBytes, c)
		return
	}
	//要找的不是自己,则转发出去
	this.sendMsg(string(targetNode.IdInfo.Build()), &msg.Date, c)
}