Merge pull request #501 from micro/wrap

add the wrappers back into the core router

server/rpc_request.go

@@ -14,6 +14,7 @@ type rpcRequest struct {
 	codec       codec.Codec
 	header      map[string]string
 	body        []byte
+	rawBody     interface{}
 	stream      bool
 }
 
@@ -48,8 +49,7 @@ func (r *rpcRequest) Header() map[string]string {
 }
 
 func (r *rpcRequest) Body() interface{} {
-	// TODO: convert to interface value
-	return r.body
+	return r.rawBody
 }
 
 func (r *rpcRequest) Read() ([]byte, error) {

server/rpc_router.go

@@ -188,6 +188,7 @@ func (s *service) call(ctx context.Context, router *router, sending *sync.Mutex,
 		method:      req.msg.Method,
 		endpoint:    req.msg.Endpoint,
 		body:        req.msg.Body,
+		rawBody:     argv.Interface(),
 	}
 
 	if !mtype.stream {
@@ -202,6 +203,11 @@ func (s *service) call(ctx context.Context, router *router, sending *sync.Mutex,
 			return nil
 		}
 
+		// wrap the handler
+		for i := len(router.hdlrWrappers); i > 0; i-- {
+			fn = router.hdlrWrappers[i-1](fn)
+		}
+
 		// execute handler
 		if err := fn(ctx, r, replyv.Interface()); err != nil {
 			return err
@@ -235,6 +241,11 @@ func (s *service) call(ctx context.Context, router *router, sending *sync.Mutex,
 		}
 	}
 
+	// wrap the handler
+	for i := len(router.hdlrWrappers); i > 0; i-- {
+		fn = router.hdlrWrappers[i-1](fn)
+	}
+
 	// client.Stream request
 	r.stream = true
 

server/rpc_server.go

@@ -35,6 +35,9 @@ type rpcServer struct {
 
 func newRpcServer(opts ...Option) Server {
 	options := newOptions(opts...)
+	router := newRpcRouter()
+	router.hdlrWrappers = options.HdlrWrappers
+
 	return &rpcServer{
 		opts:        options,
 		router:      DefaultRouter,
@@ -45,6 +48,14 @@ func newRpcServer(opts ...Option) Server {
 	}
 }
 
+type rpcRouter struct {
+	h func(context.Context, Request, interface{}) error
+}
+
+func (r rpcRouter) ServeRequest(ctx context.Context, req Request, rsp Response) error {
+	return r.h(ctx, req, rsp)
+}
+
 // ServeConn serves a single connection
 func (s *rpcServer) ServeConn(sock transport.Socket) {
 	defer func() {
@@ -143,24 +154,26 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
 		}
 
 		// set router
-		r := s.opts.Router
+		r := Router(s.router)
 
-		// if nil use default router
-		if s.opts.Router == nil {
-			r = s.router
+		// if not nil use the router specified
+		if s.opts.Router != nil {
+			// create a wrapped function
+			handler := func(ctx context.Context, req Request, rsp interface{}) error {
+				return s.opts.Router.ServeRequest(ctx, req, rsp.(Response))
+			}
+
+			// execute the wrapper for it
+			for i := len(s.opts.HdlrWrappers); i > 0; i-- {
+				handler = s.opts.HdlrWrappers[i-1](handler)
+			}
+
+			// set the router
+			r = rpcRouter{handler}
 		}
 
-		// create a wrapped function
-		handler := func(ctx context.Context, req Request, rsp interface{}) error {
-			return r.ServeRequest(ctx, req, rsp.(Response))
-		}
-
-		for i := len(s.opts.HdlrWrappers); i > 0; i-- {
-			handler = s.opts.HdlrWrappers[i-1](handler)
-		}
-
-		// TODO: handle error better
-		if err := handler(ctx, request, response); err != nil {
+		// serve the actual request using the request router
+		if err := r.ServeRequest(ctx, request, response); err != nil {
 			// write an error response
 			err = rcodec.Write(&codec.Message{
 				Header: msg.Header,
@@ -206,6 +219,15 @@ func (s *rpcServer) Init(opts ...Option) error {
 	for _, opt := range opts {
 		opt(&s.opts)
 	}
+
+	// update router if its the default
+	if s.opts.Router == nil {
+		r := newRpcRouter()
+		r.hdlrWrappers = s.opts.HdlrWrappers
+		r.serviceMap = s.router.serviceMap
+		s.router = r
+	}
+
 	s.Unlock()
 	return nil
 }