mirror of
https://github.com/duanhf2012/origin.git
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491 lines
13 KiB
Go
491 lines
13 KiB
Go
package cluster
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import (
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"fmt"
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"github.com/duanhf2012/origin/v2/log"
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"github.com/duanhf2012/origin/v2/rpc"
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"github.com/duanhf2012/origin/v2/service"
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"strings"
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"sync"
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)
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var configDir = "./config/"
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type SetupServiceFun func(s ...service.IService)
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type NodeStatus int
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const (
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Normal NodeStatus = 0 //正常
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Discard NodeStatus = 1 //丢弃
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)
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type MasterDiscoveryService struct {
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MasterNodeId int32 //要筛选的主结点Id，如果不配置或者配置成0，表示针对所有的主结点
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DiscoveryService []string //只发现的服务列表
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}
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type NodeInfo struct {
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NodeId int
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NodeName string
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Private bool
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ListenAddr string
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MaxRpcParamLen uint32 //最大Rpc参数长度
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CompressBytesLen int //超过字节进行压缩的长度
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ServiceList []string //所有的有序服务列表
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PublicServiceList []string //对外公开的服务列表
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MasterDiscoveryService []MasterDiscoveryService //筛选发现的服务，如果不配置，不进行筛选
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status NodeStatus
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Retire bool
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}
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type NodeRpcInfo struct {
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nodeInfo NodeInfo
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client *rpc.Client
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}
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var cluster Cluster
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type Cluster struct {
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localNodeInfo NodeInfo //本结点配置信息
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masterDiscoveryNodeList []NodeInfo //配置发现Master结点
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globalCfg interface{} //全局配置
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localServiceCfg map[string]interface{} //map[serviceName]配置数据*
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serviceDiscovery IServiceDiscovery //服务发现接口
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locker sync.RWMutex //结点与服务关系保护锁
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mapRpc map[int]*NodeRpcInfo //nodeId
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//mapIdNode map[int]NodeInfo //map[NodeId]NodeInfo
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mapServiceNode map[string]map[int]struct{} //map[serviceName]map[NodeId]
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rpcServer rpc.Server
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rpcEventLocker sync.RWMutex //Rpc事件监听保护锁
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mapServiceListenRpcEvent map[string]struct{} //ServiceName
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mapServiceListenDiscoveryEvent map[string]struct{} //ServiceName
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}
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func GetCluster() *Cluster {
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return &cluster
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}
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func SetConfigDir(cfgDir string) {
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configDir = cfgDir
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}
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func SetServiceDiscovery(serviceDiscovery IServiceDiscovery) {
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cluster.serviceDiscovery = serviceDiscovery
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}
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func (cls *Cluster) Start() {
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cls.rpcServer.Start(cls.localNodeInfo.ListenAddr, cls.localNodeInfo.MaxRpcParamLen,cls.localNodeInfo.CompressBytesLen)
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}
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func (cls *Cluster) Stop() {
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cls.serviceDiscovery.OnNodeStop()
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}
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func (cls *Cluster) DiscardNode(nodeId int) {
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cls.locker.Lock()
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nodeInfo, ok := cls.mapRpc[nodeId]
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bDel := (ok == true) && nodeInfo.nodeInfo.status == Discard
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cls.locker.Unlock()
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if bDel {
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cls.DelNode(nodeId, true)
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}
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}
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func (cls *Cluster) DelNode(nodeId int, immediately bool) {
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//MasterDiscover结点与本地结点不删除
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if cls.GetMasterDiscoveryNodeInfo(nodeId) != nil || nodeId == cls.localNodeInfo.NodeId {
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return
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}
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cls.locker.Lock()
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defer cls.locker.Unlock()
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rpc, ok := cls.mapRpc[nodeId]
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if ok == false {
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return
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}
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if immediately ==false {
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//正在连接中不主动断开，只断开没有连接中的
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if rpc.client.IsConnected() {
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rpc.nodeInfo.status = Discard
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log.Info("Discard node",log.Int("nodeId",rpc.nodeInfo.NodeId),log.String("ListenAddr", rpc.nodeInfo.ListenAddr))
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return
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}
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}
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for _, serviceName := range rpc.nodeInfo.ServiceList {
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cls.delServiceNode(serviceName, nodeId)
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}
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delete(cls.mapRpc, nodeId)
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if ok == true {
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rpc.client.Close(false)
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}
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log.Info("remove node ",log.Int("NodeId", rpc.nodeInfo.NodeId),log.String("ListenAddr", rpc.nodeInfo.ListenAddr))
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}
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func (cls *Cluster) serviceDiscoveryDelNode(nodeId int, immediately bool) {
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if nodeId == 0 {
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return
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}
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cls.DelNode(nodeId, immediately)
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}
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func (cls *Cluster) delServiceNode(serviceName string, nodeId int) {
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if nodeId == cls.localNodeInfo.NodeId {
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return
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}
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mapNode := cls.mapServiceNode[serviceName]
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delete(mapNode, nodeId)
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if len(mapNode) == 0 {
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delete(cls.mapServiceNode, serviceName)
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}
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}
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func (cls *Cluster) serviceDiscoverySetNodeInfo(nodeInfo *NodeInfo) {
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//本地结点不加入
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if nodeInfo.NodeId == cls.localNodeInfo.NodeId {
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return
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}
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cls.locker.Lock()
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defer cls.locker.Unlock()
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//先清一次的NodeId对应的所有服务清理
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lastNodeInfo, ok := cls.mapRpc[nodeInfo.NodeId]
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if ok == true {
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for _, serviceName := range lastNodeInfo.nodeInfo.ServiceList {
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cls.delServiceNode(serviceName, nodeInfo.NodeId)
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}
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}
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//再重新组装
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mapDuplicate := map[string]interface{}{} //预防重复数据
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for _, serviceName := range nodeInfo.PublicServiceList {
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if _, ok := mapDuplicate[serviceName]; ok == true {
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//存在重复
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log.Error("Bad duplicate Service Cfg.")
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continue
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}
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mapDuplicate[serviceName] = nil
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if _, ok := cls.mapServiceNode[serviceName]; ok == false {
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cls.mapServiceNode[serviceName] = make(map[int]struct{}, 1)
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}
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cls.mapServiceNode[serviceName][nodeInfo.NodeId] = struct{}{}
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}
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if lastNodeInfo != nil {
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log.Info("Discovery nodeId",log.Int("NodeId", nodeInfo.NodeId),log.Any("services:", nodeInfo.PublicServiceList),log.Bool("Retire",nodeInfo.Retire))
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lastNodeInfo.nodeInfo = *nodeInfo
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return
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}
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//不存在时，则建立连接
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rpcInfo := NodeRpcInfo{}
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rpcInfo.nodeInfo = *nodeInfo
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rpcInfo.client =rpc.NewRClient(nodeInfo.NodeId, nodeInfo.ListenAddr, nodeInfo.MaxRpcParamLen,cls.localNodeInfo.CompressBytesLen,cls.triggerRpcEvent)
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cls.mapRpc[nodeInfo.NodeId] = &rpcInfo
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log.Info("Discovery nodeId and new rpc client",log.Int("NodeId", nodeInfo.NodeId),log.Any("services:", nodeInfo.PublicServiceList),log.Bool("Retire",nodeInfo.Retire),log.String("nodeListenAddr",nodeInfo.ListenAddr))
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}
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func (cls *Cluster) Init(localNodeId int, setupServiceFun SetupServiceFun) error {
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//1.初始化配置
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err := cls.InitCfg(localNodeId)
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if err != nil {
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return err
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}
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cls.rpcServer.Init(cls)
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//2.安装服务发现结点
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cls.SetupServiceDiscovery(localNodeId, setupServiceFun)
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service.RegRpcEventFun = cls.RegRpcEvent
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service.UnRegRpcEventFun = cls.UnRegRpcEvent
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service.RegDiscoveryServiceEventFun = cls.RegDiscoveryEvent
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service.UnRegDiscoveryServiceEventFun = cls.UnReDiscoveryEvent
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err = cls.serviceDiscovery.InitDiscovery(localNodeId, cls.serviceDiscoveryDelNode, cls.serviceDiscoverySetNodeInfo)
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if err != nil {
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return err
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}
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return nil
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}
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func (cls *Cluster) checkDynamicDiscovery(localNodeId int) (bool, bool) {
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var localMaster bool //本结点是否为Master结点
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var hasMaster bool //是否配置Master服务
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//遍历所有结点
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for _, nodeInfo := range cls.masterDiscoveryNodeList {
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if nodeInfo.NodeId == localNodeId {
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localMaster = true
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}
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hasMaster = true
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}
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//返回查询结果
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return localMaster, hasMaster
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}
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func (cls *Cluster) AddDynamicDiscoveryService(serviceName string, bPublicService bool) {
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addServiceList := append([]string{},serviceName)
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cls.localNodeInfo.ServiceList = append(addServiceList,cls.localNodeInfo.ServiceList...)
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if bPublicService {
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cls.localNodeInfo.PublicServiceList = append(cls.localNodeInfo.PublicServiceList, serviceName)
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}
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if _, ok := cls.mapServiceNode[serviceName]; ok == false {
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cls.mapServiceNode[serviceName] = map[int]struct{}{}
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}
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cls.mapServiceNode[serviceName][cls.localNodeInfo.NodeId] = struct{}{}
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}
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func (cls *Cluster) GetDiscoveryNodeList() []NodeInfo {
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return cls.masterDiscoveryNodeList
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}
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func (cls *Cluster) GetMasterDiscoveryNodeInfo(nodeId int) *NodeInfo {
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for i := 0; i < len(cls.masterDiscoveryNodeList); i++ {
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if cls.masterDiscoveryNodeList[i].NodeId == nodeId {
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return &cls.masterDiscoveryNodeList[i]
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}
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}
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return nil
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}
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func (cls *Cluster) IsMasterDiscoveryNode() bool {
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return cls.GetMasterDiscoveryNodeInfo(cls.GetLocalNodeInfo().NodeId) != nil
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}
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func (cls *Cluster) SetupServiceDiscovery(localNodeId int, setupServiceFun SetupServiceFun) {
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if cls.serviceDiscovery != nil {
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return
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}
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//1.如果没有配置DiscoveryNode配置，则使用默认配置文件发现服务
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localMaster, hasMaster := cls.checkDynamicDiscovery(localNodeId)
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if hasMaster == false {
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cls.serviceDiscovery = &ConfigDiscovery{}
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return
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}
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setupServiceFun(&masterService, &clientService)
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//2.如果为动态服务发现安装本地发现服务
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cls.serviceDiscovery = getDynamicDiscovery()
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cls.AddDynamicDiscoveryService(DynamicDiscoveryClientName, true)
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if localMaster == true {
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cls.AddDynamicDiscoveryService(DynamicDiscoveryMasterName, false)
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}
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}
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func (cls *Cluster) FindRpcHandler(serviceName string) rpc.IRpcHandler {
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pService := service.GetService(serviceName)
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if pService == nil {
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return nil
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}
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return pService.GetRpcHandler()
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}
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func (cls *Cluster) getRpcClient(nodeId int) (*rpc.Client,bool) {
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c, ok := cls.mapRpc[nodeId]
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if ok == false {
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return nil,false
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}
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return c.client,c.nodeInfo.Retire
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}
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func (cls *Cluster) GetRpcClient(nodeId int) (*rpc.Client,bool) {
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cls.locker.RLock()
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defer cls.locker.RUnlock()
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return cls.getRpcClient(nodeId)
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}
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func GetRpcClient(nodeId int, serviceMethod string,filterRetire bool, clientList []*rpc.Client) (error, int) {
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if nodeId > 0 {
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pClient,retire := GetCluster().GetRpcClient(nodeId)
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if pClient == nil {
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return fmt.Errorf("cannot find nodeid %d!", nodeId), 0
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}
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//如果需要筛选掉退休结点
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if filterRetire == true && retire == true {
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return fmt.Errorf("cannot find nodeid %d!", nodeId), 0
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}
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clientList[0] = pClient
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return nil, 1
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}
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findIndex := strings.Index(serviceMethod, ".")
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if findIndex == -1 {
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return fmt.Errorf("servicemethod param %s is error!", serviceMethod), 0
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}
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serviceName := serviceMethod[:findIndex]
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//1.找到对应的rpcNodeid
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return GetCluster().GetNodeIdByService(serviceName, clientList, filterRetire)
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}
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func GetRpcServer() *rpc.Server {
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return &cluster.rpcServer
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}
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func (cls *Cluster) IsNodeConnected(nodeId int) bool {
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pClient,_ := cls.GetRpcClient(nodeId)
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return pClient != nil && pClient.IsConnected()
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}
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func (cls *Cluster) IsNodeRetire(nodeId int) bool {
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cls.locker.RLock()
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defer cls.locker.RUnlock()
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_,retire :=cls.getRpcClient(nodeId)
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return retire
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}
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func (cls *Cluster) triggerRpcEvent(bConnect bool, clientId uint32, nodeId int) {
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cls.locker.Lock()
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nodeInfo, ok := cls.mapRpc[nodeId]
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if ok == false || nodeInfo.client == nil || nodeInfo.client.GetClientId() != clientId {
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cls.locker.Unlock()
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return
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}
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cls.locker.Unlock()
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cls.rpcEventLocker.Lock()
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defer cls.rpcEventLocker.Unlock()
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for serviceName, _ := range cls.mapServiceListenRpcEvent {
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ser := service.GetService(serviceName)
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if ser == nil {
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log.Error("cannot find service name "+serviceName)
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continue
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}
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var eventData service.RpcConnEvent
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eventData.IsConnect = bConnect
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eventData.NodeId = nodeId
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ser.(service.IModule).NotifyEvent(&eventData)
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}
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}
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func (cls *Cluster) TriggerDiscoveryEvent(bDiscovery bool, nodeId int, serviceName []string) {
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cls.rpcEventLocker.Lock()
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defer cls.rpcEventLocker.Unlock()
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for sName, _ := range cls.mapServiceListenDiscoveryEvent {
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ser := service.GetService(sName)
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if ser == nil {
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log.Error("cannot find service",log.Any("services",serviceName))
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continue
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}
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var eventData service.DiscoveryServiceEvent
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eventData.IsDiscovery = bDiscovery
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eventData.NodeId = nodeId
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eventData.ServiceName = serviceName
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ser.(service.IModule).NotifyEvent(&eventData)
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}
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}
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func (cls *Cluster) GetLocalNodeInfo() *NodeInfo {
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return &cls.localNodeInfo
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}
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func (cls *Cluster) RegRpcEvent(serviceName string) {
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cls.rpcEventLocker.Lock()
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if cls.mapServiceListenRpcEvent == nil {
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cls.mapServiceListenRpcEvent = map[string]struct{}{}
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}
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cls.mapServiceListenRpcEvent[serviceName] = struct{}{}
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cls.rpcEventLocker.Unlock()
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}
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func (cls *Cluster) UnRegRpcEvent(serviceName string) {
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cls.rpcEventLocker.Lock()
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delete(cls.mapServiceListenRpcEvent, serviceName)
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cls.rpcEventLocker.Unlock()
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}
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func (cls *Cluster) RegDiscoveryEvent(serviceName string) {
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cls.rpcEventLocker.Lock()
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if cls.mapServiceListenDiscoveryEvent == nil {
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cls.mapServiceListenDiscoveryEvent = map[string]struct{}{}
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}
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cls.mapServiceListenDiscoveryEvent[serviceName] = struct{}{}
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cls.rpcEventLocker.Unlock()
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}
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func (cls *Cluster) UnReDiscoveryEvent(serviceName string) {
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cls.rpcEventLocker.Lock()
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delete(cls.mapServiceListenDiscoveryEvent, serviceName)
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cls.rpcEventLocker.Unlock()
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}
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func HasService(nodeId int, serviceName string) bool {
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cluster.locker.RLock()
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defer cluster.locker.RUnlock()
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mapNode, _ := cluster.mapServiceNode[serviceName]
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if mapNode != nil {
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_, ok := mapNode[nodeId]
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return ok
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}
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return false
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}
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func GetNodeByServiceName(serviceName string) map[int]struct{} {
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cluster.locker.RLock()
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defer cluster.locker.RUnlock()
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mapNode, ok := cluster.mapServiceNode[serviceName]
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if ok == false {
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return nil
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}
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mapNodeId := map[int]struct{}{}
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for nodeId,_ := range mapNode {
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mapNodeId[nodeId] = struct{}{}
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}
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return mapNodeId
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}
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func (cls *Cluster) GetGlobalCfg() interface{} {
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return cls.globalCfg
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}
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func (cls *Cluster) GetNodeInfo(nodeId int) (NodeInfo,bool) {
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cls.locker.RLock()
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defer cls.locker.RUnlock()
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nodeInfo,ok:= cls.mapRpc[nodeId]
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if ok == false || nodeInfo == nil {
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return NodeInfo{},false
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}
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return nodeInfo.nodeInfo,true
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}
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