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())
}
}
/*
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
}
}
/*
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)
}
}
}
}
}
//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)
}
