Example #1
0
//处理查找节点的请求
//本节点定期查询已知节点是否在线,更新节点信息
func read() {
	for {
		nodeIdStr := <-nodeStore.OutFindNode
		session, ok := engine.GetController().GetSession(nodeStore.SuperName)
		//root节点刚启动就没有超级节点
		if !ok {
			continue
		}
		findNodeOne := &msg.FindNode{
			NodeId:  nodeStore.GetRootIdInfoString(),
			IsProxy: false,
			ProxyId: nodeStore.GetRootIdInfoString(),
			WantId:  nodeIdStr,
		}
		/*
			当查找id等于自己的时候:
			超级节点:查找邻居节点
			普通节点:查找离自己最近的超级节点,查找邻居节点做备用超级节点
		*/
		if nodeIdStr == nodeStore.ParseId(nodeStore.GetRootIdInfoString()) {
			//普通节点查找最近的超级节点
			if !nodeStore.Root.IsSuper {
				findNodeOne.NodeId = session.GetName()
				findNodeOne.IsProxy = true
				// findNodeOne.WantId = nodeIdStr
				findNodeOne.IsSuper = nodeStore.Root.IsSuper
				findNodeOne.Addr = nodeStore.Root.Addr
				findNodeOne.TcpPort = nodeStore.Root.TcpPort
				findNodeOne.UdpPort = nodeStore.Root.UdpPort

				resultBytes, _ := json.Marshal(findNodeOne)
				session.Send(msg.FindNodeNum, &resultBytes)

				findNodeOne.WantId = "left"
				findNodeBytes, _ := json.Marshal(findNodeOne)
				err := session.Send(msg.FindNodeNum, &findNodeBytes)
				if err != nil {
					fmt.Println("manager发送数据出错:", err.Error())
				}

				findNodeOne.WantId = "right"
				findNodeBytes, _ = json.Marshal(findNodeOne)
				err = session.Send(msg.FindNodeNum, &findNodeBytes)
				if err != nil {
					fmt.Println("manager发送数据出错:", err.Error())
				}
				continue
			}

			//先发送左邻居节点查找请求
			findNodeOne.WantId = "left"
			id := nodeStore.GetLeftNode(*nodeStore.Root.IdInfo.GetBigIntId(), 1)
			if id == nil {
				continue
			}
			findNodeBytes, _ := json.Marshal(findNodeOne)
			ok := false
			var clientConn engine.Session
			if nodeStore.Root.IsSuper {
				clientConn, ok = engine.GetController().GetSession(string(id[0].IdInfo.Build()))
			} else {
				clientConn, ok = engine.GetController().GetSession(nodeStore.SuperName)
			}
			if !ok {
				continue
			}
			err := clientConn.Send(msg.FindNodeNum, &findNodeBytes)
			if err != nil {
				fmt.Println("manager发送数据出错:", err.Error())
			}
			//发送右邻居节点查找请求
			findNodeOne.WantId = "right"
			id = nodeStore.GetRightNode(*nodeStore.Root.IdInfo.GetBigIntId(), 1)
			if id == nil {
				continue
			}
			findNodeBytes, _ = json.Marshal(findNodeOne)
			if nodeStore.Root.IsSuper {
				if clientConn, ok = engine.GetController().GetSession(string(id[0].IdInfo.Build())); !ok {
					continue
				}
			}
			err = clientConn.Send(msg.FindNodeNum, &findNodeBytes)
			if err != nil {
				fmt.Println("manager发送数据出错:", err.Error())
			}
			continue
		}
		//自己不是超级节点,就不需要保存逻辑节点
		// if !nodeStore.Root.IsSuper {
		// 	continue
		// }

		//--------------------------------------------
		//    查找普通节点,只有超级节点才需要查找
		//--------------------------------------------
		//这里临时加上去
		//去掉后有性能问题

		findNodeBytes, _ := json.Marshal(findNodeOne)

		remote := nodeStore.Get(nodeIdStr, false, "")
		if remote == nil {
			continue
		}
		session, _ = engine.GetController().GetSession(string(remote.IdInfo.Build()))
		if session == nil {
			continue
		}
		err := session.Send(msg.FindNodeNum, &findNodeBytes)
		if err != nil {
			fmt.Println("manager发送数据出错:", err.Error())
		}
	}
}
Example #2
0
/*
	查看本地保存的节点中,小于本节点id的所有节点
*/
func SeeLeftNode() {
	nodes := nodeStore.GetLeftNode(*nodeStore.Root.IdInfo.GetBigIntId(), nodeStore.MaxRecentCount)
	for _, id := range nodes {
		fmt.Println(id.IdInfo.GetId())
	}
}
Example #3
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)
}