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rocserver.go
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rocserver.go
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/*
Package server micserver中的ROC调用发生时,处理调用以及返回值。
*/
package server
import (
"errors"
"fmt"
"sync"
"time"
"github.com/liasece/micserver/conf"
"github.com/liasece/micserver/connect"
"github.com/liasece/micserver/log"
"github.com/liasece/micserver/msg"
"github.com/liasece/micserver/process"
"github.com/liasece/micserver/roc"
"github.com/liasece/micserver/servercomm"
"github.com/liasece/micserver/util/hash"
)
// ROC请求信息
type requestAgent struct {
fromModuleID string
callpath string
callarg []byte
seq int64
needReturn bool
}
// ROC响应信息
type responseAgent struct {
fromModuleID string
seq int64
data []byte
err string
}
// ROCServer ROC服务
type ROCServer struct {
*log.Logger
server *Server
// 记录在本地的缓存信息
// 第一层键为ROCObj类型,第二层键为ROCObj的ID
localObj map[string]map[string]struct{}
localObjMutex sync.Mutex
// 远程对象调用支持
_ROCManager roc.Manager
rocAddCacheChan chan roc.IObj
rocDelCacheChan chan roc.IObj
rocRequestChan chan *requestAgent
rocResponseChan chan *responseAgent
rocBlockChanMap sync.Map
seqMutex sync.Mutex
lastSeq int64
}
// Init 初始化ROC服务
func (rocServer *ROCServer) Init(server *Server) {
rocServer.server = server
rocServer.Logger = server.Logger.Clone()
rocServer.Logger.SetTopic("ROCServer")
rocServer.rocAddCacheChan = make(chan roc.IObj, 10000)
rocServer.rocDelCacheChan = make(chan roc.IObj, 10000)
go rocServer.rocObjNoticeProcess(rocServer.rocAddCacheChan, false)
go rocServer.rocObjNoticeProcess(rocServer.rocDelCacheChan, true)
rocServer._ROCManager.HookObjEvent(rocServer)
rocServer.rocRequestChan = make(chan *requestAgent, 10000)
go rocServer.rocRequestProcess()
rocServer.rocResponseChan = make(chan *responseAgent, 10000)
go rocServer.rocResponseProcess()
}
// newSeq 生成一个 ROC 调用的序号,在每个模块中应该唯一
func (rocServer *ROCServer) newSeq() (res int64) {
rocServer.seqMutex.Lock()
rocServer.lastSeq++
res = rocServer.lastSeq
rocServer.seqMutex.Unlock()
return
}
// GetROC 获取指定ROC对象类型的ROC对象
func (rocServer *ROCServer) GetROC(objtype roc.ObjType) *roc.ROC {
return rocServer._ROCManager.GetROC(objtype)
}
// NewROC 新建一个指定ROC对象类型的ROC对象
func (rocServer *ROCServer) NewROC(objtype roc.ObjType) *roc.ROC {
return rocServer._ROCManager.NewROC(objtype)
}
// ROCCallNR 无返回值的ROC调用
func (rocServer *ROCServer) ROCCallNR(callpath *roc.Path, callarg []byte) error {
objType := callpath.GetObjType()
objID := callpath.GetObjID()
moduleid := roc.GetCache().Get(objType, objID)
rocServer.Syslog("[ROCServer.ROCCallNR] ROCCallNR", log.String("TargetModuleID", moduleid), log.String("CallPath", callpath.String()),
log.String("ObjType", string(objType)), log.String("ObjID", objID), log.Reflect("CallArg", callarg))
// 构造消息
sendmsg := &servercomm.SROCRequest{
FromModuleID: rocServer.server.moduleid,
Seq: rocServer.newSeq(),
CallStr: callpath.String(),
CallArg: callarg,
}
if moduleid == rocServer.server.moduleid {
sendmsg.ToModuleID = moduleid
rocServer.onMsgROCRequest(sendmsg)
} else {
server := rocServer.server.subnetManager.GetServer(moduleid)
if server != nil {
sendmsg.ToModuleID = moduleid
server.SendCmd(sendmsg)
} else {
rocServer.Warn("[ROCServer.ROCCallNR] Can't find roc object location", log.String("CallPath", callpath.String()))
return fmt.Errorf("Can't find roc object location %s", callpath.String())
}
}
return nil
}
// GetROCCachedLocation 获取ROC缓存中的位置信息
// 返回目标ROC对象所在的moduleid
func (rocServer *ROCServer) GetROCCachedLocation(objType roc.ObjType, objID string) string {
moduleid := roc.GetCache().Get(objType, objID)
return moduleid
}
// RangeROCCachedByType 遍历指定类型的ROC缓存,限制目标对象必须本module可以访问
func (rocServer *ROCServer) RangeROCCachedByType(objType roc.ObjType, f func(id string, location string) bool) {
connecedModuleIDs := make(map[string]bool)
rocServer.server.subnetManager.RangeServer(func(server *connect.Server) bool {
if server.ModuleInfo != nil {
connecedModuleIDs[server.ModuleInfo.ModuleID] = true
}
return true
})
roc.GetCache().RangeByType(objType, f, connecedModuleIDs)
}
// RandomROCCachedByType 随机获取本地缓存的ROC对象,返回该对象的ID,限制目标对象必须本module可以访问
func (rocServer *ROCServer) RandomROCCachedByType(objType roc.ObjType) string {
connecedModuleIDs := make(map[string]bool)
rocServer.server.subnetManager.RangeServer(func(server *connect.Server) bool {
if server.ModuleInfo != nil {
connecedModuleIDs[server.ModuleInfo.ModuleID] = true
}
return true
})
return roc.GetCache().RandomObjIDByType(objType, connecedModuleIDs)
}
// addBlockChan 根据ROC请求的序号,生成一个用于阻塞等待ROC返回的chan
func (rocServer *ROCServer) addBlockChan(seq int64) chan *responseAgent {
ch := make(chan *responseAgent, 1)
rocServer.rocBlockChanMap.Store(seq, ch)
return ch
}
// ROCCallBlock 有返回值的RPC调用
func (rocServer *ROCServer) ROCCallBlock(callpath *roc.Path, callarg []byte) ([]byte, error) {
objType := callpath.GetObjType()
objID := callpath.GetObjID()
moduleid := roc.GetCache().Get(objType, objID)
rocServer.Syslog("[ROCServer.ROCCallBlock] ROCCallBlock", log.String("TargetModuleID", moduleid), log.String("CallPath", callpath.String()),
log.String("ObjType", string(objType)), log.String("ObjID", objID), log.Uint32("ObjIDHash", hash.GetStringHash(string(objID))), log.Reflect("CallArg", callarg))
// 构造消息
sendmsg := &servercomm.SROCRequest{
FromModuleID: rocServer.server.moduleid,
Seq: rocServer.newSeq(),
CallStr: callpath.String(),
CallArg: callarg,
NeedReturn: true,
}
ch := rocServer.addBlockChan(sendmsg.Seq)
if moduleid == rocServer.server.moduleid {
sendmsg.ToModuleID = moduleid
rocServer.onMsgROCRequest(sendmsg)
} else {
server := rocServer.server.subnetManager.GetServer(moduleid)
if server != nil {
sendmsg.ToModuleID = moduleid
server.SendCmd(sendmsg)
} else {
rocServer.server.subnetManager.BroadcastCmd(sendmsg)
}
}
// 等待返回值
agent := <-ch
return agent.data, errors.New(agent.err)
}
// onMsgROCRequest 当收到ROC调用请求时
func (rocServer *ROCServer) onMsgROCRequest(msg *servercomm.SROCRequest) {
agent := &requestAgent{
callpath: msg.CallStr,
callarg: msg.CallArg,
seq: msg.Seq,
needReturn: msg.NeedReturn,
fromModuleID: msg.FromModuleID,
}
rocServer.rocRequestChan <- agent
}
// onMsgROCResponse 当收到ROC调用返回时
func (rocServer *ROCServer) onMsgROCResponse(msg *servercomm.SROCResponse) {
agent := &responseAgent{
fromModuleID: msg.FromModuleID,
seq: msg.ReqSeq,
data: msg.ResData,
err: msg.Error,
}
rocServer.rocResponseChan <- agent
}
// rocRequestProcess 处理带返回值的ROC调用返回的线程
func (rocServer *ROCServer) rocRequestProcess() {
tm := time.NewTimer(time.Millisecond * 300)
for !rocServer.server.isStop {
select {
case <-rocServer.server.stopChan:
break
case agent := <-rocServer.rocRequestChan:
// 处理ROC请求
rocServer.Syslog("[ROCServer.rocRequestProcess] ROC Request", log.String("CallPath", agent.callpath))
res, err := rocServer._ROCManager.Call(agent.callpath, agent.callarg)
if err != nil {
if err != roc.ErrUnknowObj {
rocServer.Error("[ROCServer.rocRequestProcess] Manager.Call", log.ErrorField(err))
} else {
rocServer.Syslog("[ROCServer.rocRequestProcess] Manager.Call", log.String("CallPath", agent.callpath), log.ErrorField(err))
}
} else {
// rocServer.Debug("ROC调用成功 res:%+v", res)
}
if agent.needReturn {
if agent.fromModuleID == rocServer.server.moduleid {
// 本地服务器调用结果
} else {
server := rocServer.server.subnetManager.GetServer(agent.fromModuleID)
if server != nil {
// 返回执行结果
sendmsg := &servercomm.SROCResponse{
FromModuleID: rocServer.server.moduleid,
ToModuleID: agent.fromModuleID,
ReqSeq: agent.seq,
ResData: res,
Error: err.Error(),
}
server.SendCmd(sendmsg)
}
}
}
case <-tm.C:
tm.Reset(time.Millisecond * 300)
break
}
}
}
// rocResponseProcess 处理ROC带返回值电泳调用的线程
func (rocServer *ROCServer) rocResponseProcess() {
tm := time.NewTimer(time.Millisecond * 300)
for !rocServer.server.isStop {
select {
case <-rocServer.server.stopChan:
break
case agent := <-rocServer.rocResponseChan:
// 处理ROC相应
rocServer.Syslog("[ROCServer.rocResponseProcess] rocResponseProcess", log.Reflect("Agent", agent))
chi, ok := rocServer.rocBlockChanMap.Load(agent.seq)
if ok {
if ch, ok := chi.(chan *responseAgent); ok {
// 写入返回值
ch <- agent
} else {
rocServer.Error("[ROCServer.rocResponseProcess] ROC returns chi.(chan *responseAgent) error", log.Reflect("Agent", agent))
}
} else {
rocServer.Error("[ROCServer.rocResponseProcess] ROC return No target ROC request exists error", log.Reflect("Agent", agent))
}
case <-tm.C:
tm.Reset(time.Millisecond * 300)
break
}
}
}
// onServerJoinSubnet 当一个服务器加入了子网时
func (rocServer *ROCServer) onServerJoinSubnet(server *connect.Server) {
if process.HasModule(server.ModuleInfo.ModuleID) {
return
}
rocServer.localObjMutex.Lock()
defer rocServer.localObjMutex.Unlock()
if rocServer.localObj == nil {
return
}
// 遍历所有类型的ROCObj
for objtype, typemap := range rocServer.localObj {
if typemap == nil || len(typemap) == 0 {
continue
}
leftnum := len(typemap)
// 临时变量
tmplist := make([]string, 0)
tmpsize := 0
// 遍历所有对象
for objid := range typemap {
leftnum--
tmplist = append(tmplist, objid)
tmpsize += len(objid) + 4
// 分包发送
if leftnum == 0 ||
(tmpsize > (msg.MessageMaxSize/2) && tmpsize > 32*1024) {
sendmsg := &servercomm.SROCBind{
HostModuleID: rocServer.server.moduleid,
IsDelete: false,
ObjType: objtype,
ObjIDs: tmplist,
}
server.SendCmd(sendmsg)
if leftnum > 0 {
tmplist = make([]string, 0)
tmpsize = 0
}
}
}
}
}
// recordLocalObj 记录本地的ROC对象
func (rocServer *ROCServer) recordLocalObj(objtype string, objid string,
isDelete bool) {
rocServer.localObjMutex.Lock()
defer rocServer.localObjMutex.Unlock()
// 初始化内存
if rocServer.localObj == nil {
rocServer.localObj = make(map[string]map[string]struct{})
}
if v, ok := rocServer.localObj[objtype]; !ok || v == nil {
rocServer.localObj[objtype] = make(map[string]struct{})
}
// 记录
if isDelete {
// 删除
if _, ok := rocServer.localObj[objtype][objid]; ok {
delete(rocServer.localObj[objtype], objid)
}
} else {
rocServer.localObj[objtype][objid] = struct{}{}
}
}
// OnROCObjAdd 当ROC对象发生注册行为时
func (rocServer *ROCServer) OnROCObjAdd(obj roc.IObj) {
// 保存本地映射缓存
roc.GetCache().Set(obj.GetROCObjType(), obj.GetROCObjID(),
rocServer.server.moduleid)
rocServer.Syslog("[ROCServer.OnROCObjAdd] Roc cache set", log.String("ObjType", string(obj.GetROCObjType())), log.String("ObjID", obj.GetROCObjID()),
log.String("HostModuleID", rocServer.server.moduleid))
// 由于ROC绑定消息与ROC调用之间存在异步问题,除非经过设置,
// 否则使用同步方式同步ROC对象绑定
if rocServer.server.moduleConfig.GetBool(conf.AsynchronousSyncRocbind) {
rocServer.rocAddCacheChan <- obj
} else {
sendmsg := &servercomm.SROCBind{
HostModuleID: rocServer.server.moduleid,
IsDelete: false,
ObjType: string(obj.GetROCObjType()),
ObjIDs: []string{obj.GetROCObjID()},
}
rocServer.sendROCBindMsg(sendmsg)
}
rocServer.recordLocalObj(string(obj.GetROCObjType()), obj.GetROCObjID(), false)
}
// OnROCObjDel 当ROC对象发生注册行为时
func (rocServer *ROCServer) OnROCObjDel(obj roc.IObj) {
// 保存本地映射缓存
roc.GetCache().Del(obj.GetROCObjType(), obj.GetROCObjID(), rocServer.server.moduleid)
rocServer.Syslog("[ROCServer.OnROCObjDel] Roc cache del", log.String("ObjType", string(obj.GetROCObjType())), log.String("ObjID", obj.GetROCObjID()),
log.String("HostModuleID", rocServer.server.moduleid))
// 由于ROC绑定消息与ROC调用之间存在异步问题,除非经过设置,
// 否则使用同步方式同步ROC对象绑定
if rocServer.server.moduleConfig.GetBool(conf.AsynchronousSyncRocbind) {
rocServer.rocDelCacheChan <- obj
} else {
sendmsg := &servercomm.SROCBind{
HostModuleID: rocServer.server.moduleid,
IsDelete: true,
ObjType: string(obj.GetROCObjType()),
ObjIDs: []string{obj.GetROCObjID()},
}
rocServer.sendROCBindMsg(sendmsg)
}
rocServer.recordLocalObj(string(obj.GetROCObjType()), obj.GetROCObjID(), true)
}
// rocObjNoticeProcess 向其他模块通知ROC注册信息的线程
func (rocServer *ROCServer) rocObjNoticeProcess(rocCacheChan chan roc.IObj, isDelete bool) {
tm := time.NewTimer(time.Millisecond * 300)
tmpList := make([]roc.IObj, 100)
lenTmpList := len(tmpList)
tmpListI := 0
var leftObj roc.IObj
for !rocServer.server.isStop {
if tmpListI == 0 && leftObj != nil {
tmpList[0] = leftObj
tmpListI++
leftObj = nil
}
wait := true
for wait {
wait = false
select {
case <-rocServer.server.stopChan:
break
case rocObj := <-rocCacheChan:
if tmpListI == 0 ||
rocObj.GetROCObjType() == tmpList[0].GetROCObjType() {
tmpList[tmpListI] = rocObj
tmpListI++
if tmpListI < lenTmpList {
wait = true
}
} else {
leftObj = rocObj
break
}
case <-tm.C:
tm.Reset(time.Millisecond * 300)
break
}
}
if !rocServer.server.isStop {
if tmpListI > 0 {
sendmsg := &servercomm.SROCBind{
HostModuleID: rocServer.server.moduleid,
IsDelete: isDelete,
ObjType: string(tmpList[0].GetROCObjType()),
ObjIDs: make([]string, tmpListI),
}
for i, obj := range tmpList {
if i >= tmpListI {
break
}
sendmsg.ObjIDs[i] = string(obj.GetROCObjID())
tmpList[i] = nil
}
rocServer.sendROCBindMsg(sendmsg)
tmpListI = 0
}
}
}
}
// sendROCBindMsg 发送ROC对象绑定信息
func (rocServer *ROCServer) sendROCBindMsg(sendmsg *servercomm.SROCBind) {
rocServer.server.subnetManager.RangeServer(
func(s *connect.Server) bool {
if !process.HasModule(s.ModuleInfo.ModuleID) {
s.SendCmd(sendmsg)
}
return true
})
}
// onMsgROCBind 当收到ROC绑定信息时
func (rocServer *ROCServer) onMsgROCBind(msg *servercomm.SROCBind) {
if !msg.IsDelete {
roc.GetCache().SetM(roc.ObjType(msg.ObjType), msg.ObjIDs, msg.HostModuleID)
} else {
roc.GetCache().DelM(roc.ObjType(msg.ObjType), msg.ObjIDs, msg.HostModuleID)
}
rocServer.Syslog("[ROCServer.onMsgROCBind] Roc cache setm", log.String("ObjType", string(msg.ObjType)), log.Reflect("ObjIDs", msg.ObjIDs),
log.String("HostModuleID", msg.HostModuleID))
}