func GetAvalConnSrv(w http.ResponseWriter, r *http.Request) {
//获取可用的conn srv子节点列表
children := common.ZkGetChildren(zkConn, Conf.ZkRoot)
if children != nil {
//随机一个机器
rand.Seed(time.Now().UnixNano())
idx := rand.Intn(len(children))
host, _ := redis.String(redClient.Do("GET", RCP_TCP_HOST_PREFIX+children[idx]))
retJson(w, r, 0, host, nil)
return
}
retJson(w, r, -1, "没有可用的连接服务器", nil)
return
}
//服务器启动
func (self *Server) Start() {
listener, err := net.Listen("tcp", Conf.TcpBind)
self.listener = listener
if err != nil {
fmt.Printf("server %s listen failed", Conf.TcpBind)
return
}
fmt.Printf("server %s start\n", Conf.TcpBind)
go func() {
fmt.Printf("begin to accept connects\n")
for {
conn, err := self.listener.Accept()
if err != nil {
fmt.Printf("server accept error : \"%v\"", err)
return
}
fmt.Printf("new client connect: \"%v\"", conn)
self.pending <- conn
fmt.Printf("new client into pending\n")
}
}()
//服务器初始化完成以后，开启zookeeper
zkConn = common.ZkConnect(Conf.ZooKeeper)
common.ZkCreateRoot(zkConn, Conf.ZkRoot)
//为当前服务器创建一个节点，加入到集群中
path := Conf.ZkRoot + "/" + Conf.RcpBind
common.ZkCreateTempNode(zkConn, path)
go func() {
for {
exist, _, watch, err := zkConn.ExistsW(path)
if err != nil {
//发生错误，当前节点退出
common.KillSelf()
return
}
if !exist {
//节点不存在了
common.KillSelf()
return
}
event := <-watch
fmt.Printf("%s receiver a event %v\n", path, event)
}
}()
//获取存储子节点列表
var size int
children := common.ZkGetChildren(zkConn, Conf.MsZkRoot)
if children != nil {
//开启新的客户端
for _, host := range children {
msClients[size] = common.InitRpcClient(host)
size++
}
msLen = size
isMsStop = false
fmt.Printf("ms len %d\n", msLen)
}
//开一个goroute处理ms服务器节点变化
go func() {
for {
_, _, events, err := zkConn.ChildrenW(Conf.MsZkRoot)
if err != nil {
time.Sleep(time.Second * 1)
continue
}
evt := <-events
if evt.Type == zk.EventNodeChildrenChanged {
// ms节点有变化，更新ms列表
// 停止当前的ms处理
isMsStop = true
time.Sleep(time.Second * 1) //暂停一秒，让在处理中的ms处理完成
size = 0
//关闭原先ms客户端
for _, mc := range msClients {
if mc != nil {
mc.Close()
msClients[size] = nil
}
size++
}
//获取子节点列表
children := common.ZkGetChildren(zkConn, Conf.MsZkRoot)
if children == nil {
fmt.Printf("no ms rpc servers\n")
continue
}
size = 0
//开启新的客户端
for _, host := range children {
msClients[size] = common.InitRpcClient(host)
size++
}
msLen = size
isMsStop = false
fmt.Printf("ms len %d\n", msLen)
}
}
}()
}
func StartPushSrv() {
ps := NewPushSrv()
rpc.Register(ps)
rpc.HandleHTTP()
go func() {
err := http.ListenAndServe(Conf.TcpBind, nil)
if err != nil {
fmt.Printf("pushsrv rpc error: %s\n", err.Error())
}
}()
//服务器初始化完成以后，开启zookeeper
zkConn = common.ZkConnect(Conf.ZooKeeper)
common.ZkCreateRoot(zkConn, Conf.ZkRoot)
//为当前push服务器创建一个节点，加入到push集群中
path := Conf.ZkRoot + "/" + Conf.TcpBind
common.ZkCreateTempNode(zkConn, path)
go func() {
exist, _, watch, err := zkConn.ExistsW(path)
if err != nil {
//发生错误，当前节点退出
fmt.Printf("%s occur error\n", path)
common.KillSelf()
}
if !exist {
//节点不存在了
fmt.Printf("%s not exist\n", path)
common.KillSelf()
}
event := <-watch
fmt.Printf("%s receiver a event %v\n", path, event)
}()
//初始化conn srv可用列表
connZkConn := common.ZkConnect(Conf.ConnZooKeeper)
children := common.ZkGetChildren(connZkConn, Conf.ConnZkRoot)
if children != nil {
//更新可用客户端列表
for _, host := range children {
avalConnClient[host] = initRpcClient(host)
}
}
//开一个goroute处理conn srv服务器节点变化
go func() {
for {
_, _, events, err := connZkConn.ChildrenW(Conf.ConnZkRoot)
if err != nil {
time.Sleep(time.Second * 1)
continue
}
evt := <-events
if evt.Type == zk.EventNodeChildrenChanged {
//conn节点有变化，更新conn列表
isStopSecond = true
time.Sleep(time.Second * 1)
for host, rcpCli := range avalConnClient {
rcpCli.Close()
delete(avalConnClient, host)
}
children := common.ZkGetChildren(connZkConn, Conf.ConnZkRoot)
for _, host := range children {
avalConnClient[host] = initRpcClient(host)
}
isStopSecond = false
}
}
}()
//可以开始处理消息
isStopSecond = false
}
func StartSendSrv() {
isMsStop = true
isPsStop = true
msLen = 0
psLen = 0
rand.Seed(time.Now().UnixNano())
conn, err := redis.Dial("tcp", Conf.Redis)
if err != nil {
fmt.Printf("tcp redis %v\n", err.Error())
return
}
redClient = conn
msgGet, msgPut = common.MakeMessageRecycler()
msgPushPool = make(chan *common.Message, 4096)
msgStorePool = make(chan *common.Message)
go func() {
msIdx := 0
for {
//ms列表有变化
if isMsStop || msLen == 0 {
time.Sleep(time.Second * 1)
continue
}
msIdx = rand.Intn(msLen)
m, err := redis.String(redClient.Do("RPOP", "msg_queue_0"))
if m == "" {
time.Sleep(time.Second)
continue
}
if err == nil {
var msg common.Message
err = json.Unmarshal([]byte(m), &msg)
if err == nil {
HandleServerMsg(&msg, msClients[msIdx])
}
}
}
}()
go func() {
var success bool
psIdx := 0
for {
//ms列表有变化
if isPsStop || psLen == 0 {
time.Sleep(time.Second * 1)
continue
}
if m := <-msgPushPool; m != nil {
psIdx = rand.Intn(psLen)
err := pushSrvClients[psIdx].Call("PushSrv.SendMsg", *m, &success)
if err != nil || !success {
fmt.Printf("call push srv send message failed")
}
}
}
}()
go func() {
var success bool
msIdx := 0
for {
//ms列表有变化
if isMsStop || msLen == 0 {
time.Sleep(time.Second * 1)
continue
}
select {
case m := <-msgStorePool:
//MS落地存储
msIdx = rand.Intn(msLen)
err := msClients[msIdx].Call("MS.SaveMessage", *m, &success)
if err != nil || !success {
fmt.Printf("send server call MS SaveMessage failed")
}
msgPut <- m
}
}
}()
//服务器初始化完成，启动zookeeper
zkConn = common.ZkConnect(Conf.ZooKeeper)
size := 0
//获取子节点列表
children := common.ZkGetChildren(zkConn, Conf.MsZkRoot)
if children != nil {
//开启新的客户端
for _, host := range children {
msClients[size] = initRpcClient(host)
size++
}
msLen = size
isMsStop = false
fmt.Printf("ms len %d\n", msLen)
}
//获取push子节点列表
psSize := 0
psChildren := common.ZkGetChildren(zkConn, Conf.PsZkRoot)
if psChildren != nil {
//开启新的客户端
for _, psHost := range psChildren {
pushSrvClients[psSize] = initRpcClient(psHost)
psSize++
}
psLen = psSize
isPsStop = false
fmt.Printf("ps len %d\n", psLen)
}
//开一个goroute处理ms服务器节点变化
go func() {
for {
_, _, events, err := zkConn.ChildrenW(Conf.MsZkRoot)
if err != nil {
time.Sleep(time.Second * 1)
continue
}
evt := <-events
if evt.Type == zk.EventNodeChildrenChanged {
// ms节点有变化，更新ms列表
// 停止当前的ms处理
isMsStop = true
time.Sleep(time.Second * 1) //暂停一秒，让在处理中的ms处理完成
size = 0
//关闭原先ms客户端
for _, mc := range msClients {
if mc != nil {
mc.Close()
msClients[size] = nil
}
size++
}
//获取子节点列表
children := common.ZkGetChildren(zkConn, Conf.MsZkRoot)
if children == nil {
fmt.Printf("no ms rpc servers\n")
continue
}
size = 0
//开启新的客户端
for _, host := range children {
msClients[size] = initRpcClient(host)
size++
}
msLen = size
isMsStop = false
fmt.Printf("ms len %d\n", msLen)
}
}
}()
//开一个goroute处理push服务器节点变化
go func() {
for {
_, _, events, err := zkConn.ChildrenW(Conf.PsZkRoot)
if err != nil {
time.Sleep(time.Second * 1)
continue
}
evt := <-events
if evt.Type == zk.EventNodeChildrenChanged {
// push节点有变化，更新push列表
// 停止当前的push处理
isPsStop = true
time.Sleep(time.Second * 1) //暂停一秒，让在处理中的push处理完成
psSize = 0
//关闭原先push客户端
for _, psc := range pushSrvClients {
if psc != nil {
psc.Close()
pushSrvClients[psSize] = nil
}
psSize++
}
//获取子节点列表
children := common.ZkGetChildren(zkConn, Conf.PsZkRoot)
if children == nil {
fmt.Printf("no ps rpc servers\n")
continue
}
psSize = 0
//开启新的客户端
for _, host := range children {
pushSrvClients[psSize] = initRpcClient(host)
psSize++
}
psLen = psSize
isPsStop = false
fmt.Printf("ps len %d\n", psLen)
}
}
}()
}
