mirror of
https://github.com/duanhf2012/origin.git
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634 lines
18 KiB
Go
634 lines
18 KiB
Go
package rpc
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import (
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"fmt"
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"github.com/duanhf2012/origin/log"
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"reflect"
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"runtime"
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"strings"
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"unicode"
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"unicode/utf8"
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)
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const maxClusterNode int = 128
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type FuncRpcClient func(nodeId int,serviceMethod string,client []*Client) (error,int)
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type FuncRpcServer func() (*Server)
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var nilError = reflect.Zero(reflect.TypeOf((*error)(nil)).Elem())
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type RpcError string
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var NilError RpcError
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func (e RpcError) Error() string {
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return string(e)
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}
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func ConvertError(e error) RpcError{
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if e == nil {
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return NilError
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}
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rpcErr := RpcError(e.Error())
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return rpcErr
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}
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func Errorf(format string, a ...interface{}) *RpcError {
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rpcErr := RpcError(fmt.Sprintf(format,a...))
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return &rpcErr
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}
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type RpcMethodInfo struct {
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method reflect.Method
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inParamValue reflect.Value
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inParam interface{}
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outParamValue reflect.Value
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hasResponder bool
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rpcProcessorType RpcProcessorType
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}
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type RpcHandler struct {
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callRequest chan *RpcRequest
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rpcHandler IRpcHandler
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mapFunctions map[string]RpcMethodInfo
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funcRpcClient FuncRpcClient
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funcRpcServer FuncRpcServer
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callResponseCallBack chan *Call //异步返回的回调
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}
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type IRpcHandler interface {
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GetName() string
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InitRpcHandler(rpcHandler IRpcHandler,getClientFun FuncRpcClient,getServerFun FuncRpcServer)
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GetRpcHandler() IRpcHandler
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PushRequest(callInfo *RpcRequest) error
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HandlerRpcRequest(request *RpcRequest)
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HandlerRpcResponseCB(call *Call)
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GetRpcRequestChan() chan *RpcRequest
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GetRpcResponseChan() chan *Call
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CallMethod(ServiceMethod string,param interface{},reply interface{}) error
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AsyncCall(serviceMethod string,args interface{},callback interface{}) error
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Call(serviceMethod string,args interface{},reply interface{}) error
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Go(serviceMethod string,args interface{}) error
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AsyncCallNode(nodeId int,serviceMethod string,args interface{},callback interface{}) error
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CallNode(nodeId int,serviceMethod string,args interface{},reply interface{}) error
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GoNode(nodeId int,serviceMethod string,args interface{}) error
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RawGoNode(rpcProcessorType RpcProcessorType,nodeId int,serviceMethod string,args IRawInputArgs) error
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IsSingleCoroutine() bool
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}
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func reqHandlerNull(Returns interface{},Err RpcError) {
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}
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var requestHandlerNull reflect.Value
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func init(){
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requestHandlerNull = reflect.ValueOf(reqHandlerNull)
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}
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func (handler *RpcHandler) GetRpcHandler() IRpcHandler{
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return handler.rpcHandler
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}
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func (handler *RpcHandler) InitRpcHandler(rpcHandler IRpcHandler,getClientFun FuncRpcClient,getServerFun FuncRpcServer) {
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handler.callRequest = make(chan *RpcRequest,1000000)
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handler.callResponseCallBack = make(chan *Call,1000000)
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handler.rpcHandler = rpcHandler
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handler.mapFunctions = map[string]RpcMethodInfo{}
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handler.funcRpcClient = getClientFun
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handler.funcRpcServer = getServerFun
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handler.RegisterRpc(rpcHandler)
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}
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// Is this an exported - upper case - name?
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func isExported(name string) bool {
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rune, _ := utf8.DecodeRuneInString(name)
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return unicode.IsUpper(rune)
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}
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// Is this type exported or a builtin?
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func (handler *RpcHandler) isExportedOrBuiltinType(t reflect.Type) bool {
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for t.Kind() == reflect.Ptr {
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t = t.Elem()
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}
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// PkgPath will be non-empty even for an exported type,
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// so we need to check the type name as well.
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return isExported(t.Name()) || t.PkgPath() == ""
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}
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func (handler *RpcHandler) suitableMethods(method reflect.Method) error {
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//只有RPC_开头的才能被调用
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if strings.Index(method.Name,"RPC_")!=0 {
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return nil
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}
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//取出输入参数类型
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var rpcMethodInfo RpcMethodInfo
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typ := method.Type
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if typ.NumOut() != 1 {
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return fmt.Errorf("%s The number of returned arguments must be 1!",method.Name)
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}
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if typ.Out(0).String() != "error" {
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return fmt.Errorf("%s The return parameter must be of type error!",method.Name)
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}
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if typ.NumIn() <2 || typ.NumIn() > 4 {
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return fmt.Errorf("%s Unsupported parameter format!",method.Name)
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}
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//1.判断第一个参数
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var parIdx int = 1
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if typ.In(parIdx).String() == "rpc.RequestHandler" {
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parIdx += 1
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rpcMethodInfo.hasResponder = true
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}
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for i:= parIdx ;i<typ.NumIn();i++{
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if handler.isExportedOrBuiltinType(typ.In(i)) == false {
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return fmt.Errorf("%s Unsupported parameter types!",method.Name)
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}
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}
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a := typ.In(parIdx).Kind()
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if a == reflect.Interface {
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rpcMethodInfo.inParam = nil
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}else{
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rpcMethodInfo.inParamValue = reflect.New(typ.In(parIdx).Elem()) //append(rpcMethodInfo.iparam,)
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rpcMethodInfo.inParam = reflect.New(typ.In(parIdx).Elem()).Interface()
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pt,_ := GetProcessorType(rpcMethodInfo.inParamValue.Interface())
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rpcMethodInfo.rpcProcessorType = pt
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}
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parIdx++
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if parIdx< typ.NumIn() {
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rpcMethodInfo.outParamValue = reflect.New(typ.In(parIdx).Elem())
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}
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rpcMethodInfo.method = method
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handler.mapFunctions[handler.rpcHandler.GetName()+"."+method.Name] = rpcMethodInfo
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return nil
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}
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func (handler *RpcHandler) RegisterRpc(rpcHandler IRpcHandler) error {
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typ := reflect.TypeOf(rpcHandler)
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for m:=0;m<typ.NumMethod();m++{
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method := typ.Method(m)
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err := handler.suitableMethods(method)
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if err != nil {
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panic(err)
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}
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}
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return nil
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}
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func (handler *RpcHandler) PushRequest(req *RpcRequest) error{
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if len(handler.callRequest) >= cap(handler.callRequest){
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return fmt.Errorf("RpcHandler %s Rpc Channel is full.", handler.GetName())
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}
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handler.callRequest <- req
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return nil
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}
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func (handler *RpcHandler) GetRpcRequestChan() (chan *RpcRequest) {
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return handler.callRequest
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}
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func (handler *RpcHandler) GetRpcResponseChan() chan *Call{
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return handler.callResponseCallBack
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}
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func (handler *RpcHandler) HandlerRpcResponseCB(call *Call){
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defer func() {
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if r := recover(); r != nil {
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buf := make([]byte, 4096)
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l := runtime.Stack(buf, false)
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err := fmt.Errorf("%v: %s\n", r, buf[:l])
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log.Error("core dump info:%+v",err)
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}
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}()
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if call.Err == nil {
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call.callback.Call([]reflect.Value{reflect.ValueOf(call.Reply),nilError})
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}else{
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call.callback.Call([]reflect.Value{reflect.ValueOf(call.Reply),reflect.ValueOf(call.Err)})
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}
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ReleaseCall(call)
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}
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func (handler *RpcHandler) HandlerRpcRequest(request *RpcRequest) {
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defer func() {
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if r := recover(); r != nil {
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buf := make([]byte, 4096)
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l := runtime.Stack(buf, false)
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err := fmt.Errorf("%v: %s", r, buf[:l])
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log.Error("Handler Rpc %s Core dump info:%+v\n",request.RpcRequestData.GetServiceMethod(),err)
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rpcErr := RpcError("call error : core dumps")
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if request.requestHandle!=nil {
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request.requestHandle(nil,rpcErr)
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}
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}
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}()
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defer ReleaseRpcRequest(request)
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defer request.rpcProcessor.ReleaseRpcRequest(request.RpcRequestData)
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if request.inputArgs!=nil {
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defer request.inputArgs.DoGc()
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}
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v,ok := handler.mapFunctions[request.RpcRequestData.GetServiceMethod()]
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if ok == false {
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err := "RpcHandler "+handler.rpcHandler.GetName()+"cannot find "+request.RpcRequestData.GetServiceMethod()
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log.Error(err)
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if request.requestHandle!=nil {
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request.requestHandle(nil,RpcError(err))
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}
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return
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}
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var paramList []reflect.Value
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var err error
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var iParam interface{}
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//单协程下减少gc
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if handler.IsSingleCoroutine(){
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iParam = v.inParam
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}else{
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iParam = reflect.New(v.inParamValue.Type().Elem()).Interface()
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}
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if request.bLocalRequest == false {
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if iParam == nil {
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iParam = request.RpcRequestData.GetInParam()
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}else{
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err = request.rpcProcessor.Unmarshal(request.RpcRequestData.GetInParam(),iParam)
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if err!=nil {
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rErr := "Call Rpc "+request.RpcRequestData.GetServiceMethod()+" Param error "+err.Error()
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log.Error(rErr)
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if request.requestHandle!=nil {
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request.requestHandle(nil, RpcError(rErr))
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}
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return
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}
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}
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}else {
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if iParam == nil {
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iParam = request.inputArgs.GetRawData()
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}else if request.inputArgs!=nil {
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err = request.rpcProcessor.Unmarshal(request.inputArgs.GetRawData(),iParam)
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if err!=nil {
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rErr := "Call Rpc "+request.RpcRequestData.GetServiceMethod()+" Param error "+err.Error()
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log.Error(rErr)
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if request.requestHandle!=nil {
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request.requestHandle(nil, RpcError(rErr))
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}
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return
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}
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}else {
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iParam = request.localParam
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}
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}
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paramList = append(paramList,reflect.ValueOf(handler.GetRpcHandler())) //接受者
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if v.hasResponder == true {
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if request.requestHandle!=nil {
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responder := reflect.ValueOf(request.requestHandle)
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paramList = append(paramList,responder)
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}else{
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paramList = append(paramList,requestHandlerNull)
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}
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}
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paramList = append(paramList,reflect.ValueOf(iParam))
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var oParam reflect.Value
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if v.outParamValue.IsValid() {
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if request.localReply!=nil {
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oParam = reflect.ValueOf(request.localReply) //输出参数
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}else if handler.IsSingleCoroutine()==true{
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oParam = v.outParamValue
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}else{
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oParam = reflect.New(v.outParamValue.Type().Elem())
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}
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paramList = append(paramList,oParam) //输出参数
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}else if request.requestHandle != nil && v.hasResponder==false{ //调用方有返回值，但被调用函数没有返回参数
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rErr := "Call Rpc "+request.RpcRequestData.GetServiceMethod()+" without return parameter!"
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log.Error(rErr)
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request.requestHandle(nil, RpcError(rErr))
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return
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}
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returnValues := v.method.Func.Call(paramList)
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errInter := returnValues[0].Interface()
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if errInter != nil {
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err = errInter.(error)
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}
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if request.requestHandle!=nil && v.hasResponder==false {
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request.requestHandle(oParam.Interface(), ConvertError(err))
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}
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}
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func (handler *RpcHandler) CallMethod(ServiceMethod string,param interface{},reply interface{}) error{
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var err error
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v,ok := handler.mapFunctions[ServiceMethod]
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if ok == false {
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err = fmt.Errorf("RpcHandler %s cannot find %s", handler.rpcHandler.GetName(),ServiceMethod)
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log.Error("%s",err.Error())
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return err
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}
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var paramList []reflect.Value
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paramList = append(paramList,reflect.ValueOf(handler.GetRpcHandler())) //接受者
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paramList = append(paramList,reflect.ValueOf(param))
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paramList = append(paramList,reflect.ValueOf(reply)) //输出参数
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returnValues := v.method.Func.Call(paramList)
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errInter := returnValues[0].Interface()
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if errInter != nil {
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err = errInter.(error)
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}
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return err
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}
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func (handler *RpcHandler) goRpc(processor IRpcProcessor,bCast bool,nodeId int,serviceMethod string,args interface{}) error {
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var pClientList [maxClusterNode]*Client
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err,count := handler.funcRpcClient(nodeId,serviceMethod,pClientList[:])
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if count==0||err != nil {
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log.Error("Call serviceMethod is error:%+v!",err)
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return err
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}
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if count > 1 && bCast == false{
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log.Error("Cannot call more then 1 node!")
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return fmt.Errorf("Cannot call more then 1 node!")
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}
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//2.rpcclient调用
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//如果调用本结点服务
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for i:=0;i<count;i++{
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if pClientList[i].bSelfNode == true {
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pLocalRpcServer:= handler.funcRpcServer()
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//判断是否是同一服务
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findIndex := strings.Index(serviceMethod,".")
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if findIndex==-1 {
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sErr := fmt.Errorf("Call serviceMethod %s is error!",serviceMethod)
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log.Error("%+v", sErr)
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if sErr != nil {
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err = sErr
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}
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continue
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}
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serviceName := serviceMethod[:findIndex]
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if serviceName == handler.rpcHandler.GetName() { //自己服务调用
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//调用自己rpcHandler处理器
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return pLocalRpcServer.myselfRpcHandlerGo(serviceName,serviceMethod,args,nil)
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}
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//其他的rpcHandler的处理器
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pCall := pLocalRpcServer.selfNodeRpcHandlerGo(processor,pClientList[i],true,serviceName,serviceMethod,args,nil,nil)
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if pCall.Err!=nil {
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err = pCall.Err
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}
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ReleaseCall(pCall)
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continue
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}
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//跨node调用
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pCall := pClientList[i].Go(true,serviceMethod,args,nil)
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if pCall.Err!=nil {
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err = pCall.Err
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}
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ReleaseCall(pCall)
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}
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return err
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}
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func (handler *RpcHandler) callRpc(nodeId int,serviceMethod string,args interface{},reply interface{}) error {
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var pClientList [maxClusterNode]*Client
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err,count := handler.funcRpcClient(nodeId,serviceMethod,pClientList[:])
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if count==0||err != nil {
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log.Error("Call serviceMethod is error:%+v!",err)
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return err
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}
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if count > 1 {
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log.Error("Cannot call more then 1 node!")
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return fmt.Errorf("Cannot call more then 1 node!")
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}
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//2.rpcclient调用
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//如果调用本结点服务
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pClient := pClientList[0]
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if pClient.bSelfNode == true {
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pLocalRpcServer:= handler.funcRpcServer()
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//判断是否是同一服务
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findIndex := strings.Index(serviceMethod,".")
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if findIndex==-1 {
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err := fmt.Errorf("Call serviceMethod %s is error!",serviceMethod)
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log.Error("%+v",err)
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return err
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}
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serviceName := serviceMethod[:findIndex]
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if serviceName == handler.rpcHandler.GetName() { //自己服务调用
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//调用自己rpcHandler处理器
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return pLocalRpcServer.myselfRpcHandlerGo(serviceName,serviceMethod,args,reply)
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}
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//其他的rpcHandler的处理器
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pCall := pLocalRpcServer.selfNodeRpcHandlerGo(nil,pClient,false,serviceName,serviceMethod,args,reply,nil)
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err = pCall.Done().Err
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pClient.RemovePending(pCall.Seq)
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ReleaseCall(pCall)
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return err
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}
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//跨node调用
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pCall := pClient.Go(false,serviceMethod,args,reply)
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if pCall.Err != nil {
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ReleaseCall(pCall)
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return pCall.Err
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}
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err = pCall.Done().Err
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ReleaseCall(pCall)
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return err
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}
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func (handler *RpcHandler) asyncCallRpc(nodeid int,serviceMethod string,args interface{},callback interface{}) error {
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fVal := reflect.ValueOf(callback)
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if fVal.Kind()!=reflect.Func{
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err := fmt.Errorf("call %s input callback param is error!",serviceMethod)
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log.Error("+v",err)
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return err
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}
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if fVal.Type().NumIn()!= 2 {
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err := fmt.Errorf("call %s callback param function is error!",serviceMethod)
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log.Error("%+v",err)
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return err
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}
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if fVal.Type().In(0).Kind() != reflect.Ptr || fVal.Type().In(1).String() != "error"{
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err := fmt.Errorf("call %s callback function param is error!",serviceMethod)
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log.Error("%+v",err)
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return err
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}
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reply := reflect.New(fVal.Type().In(0).Elem()).Interface()
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var pClientList [maxClusterNode]*Client
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err,count := handler.funcRpcClient(nodeid,serviceMethod,pClientList[:])
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if count==0||err != nil {
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fVal.Call([]reflect.Value{reflect.ValueOf(reply),reflect.ValueOf(err)})
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log.Error("Call serviceMethod is error:%+v!",err)
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return nil
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}
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if count > 1 {
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err := fmt.Errorf("Cannot call more then 1 node!")
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fVal.Call([]reflect.Value{reflect.ValueOf(reply),reflect.ValueOf(err)})
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log.Error("Cannot call more then 1 node!")
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return nil
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}
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//2.rpcclient调用
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//如果调用本结点服务
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pClient := pClientList[0]
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if pClient.bSelfNode == true {
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pLocalRpcServer:= handler.funcRpcServer()
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//判断是否是同一服务
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findIndex := strings.Index(serviceMethod,".")
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if findIndex==-1 {
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err := fmt.Errorf("Call serviceMethod %s is error!",serviceMethod)
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fVal.Call([]reflect.Value{reflect.ValueOf(reply),reflect.ValueOf(err)})
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log.Error("%+v",err)
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return nil
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}
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serviceName := serviceMethod[:findIndex]
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//调用自己rpcHandler处理器
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if serviceName == handler.rpcHandler.GetName() { //自己服务调用
|
|
err := pLocalRpcServer.myselfRpcHandlerGo(serviceName,serviceMethod,args,reply)
|
|
if err == nil {
|
|
fVal.Call([]reflect.Value{reflect.ValueOf(reply),nilError})
|
|
}else{
|
|
fVal.Call([]reflect.Value{reflect.ValueOf(reply),reflect.ValueOf(err)})
|
|
}
|
|
}
|
|
|
|
//其他的rpcHandler的处理器
|
|
if callback!=nil {
|
|
err = pLocalRpcServer.selfNodeRpcHandlerAsyncGo(pClient, handler,false,serviceName,serviceMethod,args,reply,fVal)
|
|
if err != nil {
|
|
fVal.Call([]reflect.Value{reflect.ValueOf(reply),reflect.ValueOf(err)})
|
|
}
|
|
return nil
|
|
}
|
|
pCall := pLocalRpcServer.selfNodeRpcHandlerGo(nil,pClient,false,serviceName,serviceMethod,args,reply,nil)
|
|
err = pCall.Done().Err
|
|
pClient.RemovePending(pCall.Seq)
|
|
ReleaseCall(pCall)
|
|
|
|
return err
|
|
}
|
|
|
|
//跨node调用
|
|
err = pClient.AsyncCall(handler,serviceMethod,fVal,args,reply)
|
|
if err != nil {
|
|
fVal.Call([]reflect.Value{reflect.ValueOf(reply),reflect.ValueOf(err)})
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (handler *RpcHandler) GetName() string{
|
|
return handler.rpcHandler.GetName()
|
|
}
|
|
|
|
func (handler *RpcHandler) IsSingleCoroutine() bool{
|
|
return handler.rpcHandler.IsSingleCoroutine()
|
|
}
|
|
|
|
func (handler *RpcHandler) AsyncCall(serviceMethod string,args interface{},callback interface{}) error {
|
|
return handler.asyncCallRpc(0,serviceMethod,args,callback)
|
|
}
|
|
|
|
func (handler *RpcHandler) Call(serviceMethod string,args interface{},reply interface{}) error {
|
|
return handler.callRpc(0,serviceMethod,args,reply)
|
|
}
|
|
|
|
func (handler *RpcHandler) Go(serviceMethod string,args interface{}) error {
|
|
return handler.goRpc(nil,false,0,serviceMethod,args)
|
|
}
|
|
|
|
func (handler *RpcHandler) AsyncCallNode(nodeId int,serviceMethod string,args interface{},callback interface{}) error {
|
|
return handler.asyncCallRpc(nodeId,serviceMethod,args,callback)
|
|
}
|
|
|
|
func (handler *RpcHandler) CallNode(nodeId int,serviceMethod string,args interface{},reply interface{}) error {
|
|
return handler.callRpc(nodeId,serviceMethod,args,reply)
|
|
}
|
|
|
|
func (handler *RpcHandler) GoNode(nodeId int,serviceMethod string,args interface{}) error {
|
|
return handler.goRpc(nil,false,nodeId,serviceMethod,args)
|
|
}
|
|
|
|
func (handler *RpcHandler) CastGo(serviceMethod string,args interface{}) {
|
|
handler.goRpc(nil,true,0,serviceMethod,args)
|
|
}
|
|
|
|
|
|
func (handler *RpcHandler) RawGoNode(rpcProcessorType RpcProcessorType,nodeId int,serviceMethod string,args IRawInputArgs) error {
|
|
processor := GetProcessor(uint8(rpcProcessorType))
|
|
var pClientList [maxClusterNode]*Client
|
|
err,count := handler.funcRpcClient(nodeId,serviceMethod,pClientList[:])
|
|
if count==0||err != nil {
|
|
args.DoGc()
|
|
log.Error("Call serviceMethod is error:%+v!",err)
|
|
return err
|
|
}
|
|
if count > 1 {
|
|
args.DoGc()
|
|
log.Error("Cannot call more then 1 node!")
|
|
return fmt.Errorf("Cannot call more then 1 node!")
|
|
}
|
|
|
|
//2.rpcclient调用
|
|
//如果调用本结点服务
|
|
for i:=0;i<count;i++{
|
|
if pClientList[i].bSelfNode == true {
|
|
pLocalRpcServer:= handler.funcRpcServer()
|
|
//判断是否是同一服务
|
|
findIndex := strings.Index(serviceMethod,".")
|
|
if findIndex==-1 {
|
|
serr := fmt.Errorf("Call serviceMethod %s is error!",serviceMethod)
|
|
log.Error("%+v",serr)
|
|
if serr!= nil {
|
|
err = serr
|
|
}
|
|
continue
|
|
}
|
|
serviceName := serviceMethod[:findIndex]
|
|
//调用自己rpcHandler处理器
|
|
if serviceName == handler.rpcHandler.GetName() { //自己服务调用
|
|
err:= pLocalRpcServer.myselfRpcHandlerGo(serviceName,serviceMethod,args,nil)
|
|
args.DoGc()
|
|
return err
|
|
}
|
|
|
|
//其他的rpcHandler的处理器
|
|
pCall := pLocalRpcServer.selfNodeRpcHandlerGo(processor,pClientList[i],true,serviceName,serviceMethod,nil,nil,args)
|
|
if pCall.Err!=nil {
|
|
err = pCall.Err
|
|
}
|
|
ReleaseCall(pCall)
|
|
continue
|
|
}
|
|
|
|
//跨node调用
|
|
pCall := pClientList[i].RawGo(processor,true,serviceMethod,args.GetRawData(),nil)
|
|
args.DoGc()
|
|
if pCall.Err!=nil {
|
|
err = pCall.Err
|
|
}
|
|
ReleaseCall(pCall)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|