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grpc
OnResolveMethod

How to use OnResolveMethod method of grpc Package

Best Venom code snippet using grpc.OnResolveMethod

invoke.go

Source:invoke.go

...18// InvocationEventHandler is a bag of callbacks for handling events that occur in the course19// of invoking an RPC. The handler also provides request data that is sent. The callbacks are20// generally called in the order they are listed below.21type InvocationEventHandler interface {22	// OnResolveMethod is called with a descriptor of the method that is being invoked.23	OnResolveMethod(*desc.MethodDescriptor)24	// OnSendHeaders is called with the request metadata that is being sent.25	OnSendHeaders(metadata.MD)26	// OnReceiveHeaders is called when response headers have been received.27	OnReceiveHeaders(metadata.MD)28	// OnReceiveResponse is called for each response message received.29	OnReceiveResponse(proto.Message) (string, error)30	// OnReceiveTrailers is called when response trailers and final RPC status have been received.31	OnReceiveTrailers(*status.Status, metadata.MD)32}33// RequestSupplier is a function that is called to populate messages for a gRPC operation. The34// function should populate the given message or return a non-nil error. If the supplier has no35// more messages, it should return io.EOF. When it returns io.EOF, it should not in any way36// modify the given message argument.37type RequestSupplier func(proto.Message) error38// InvokeRPC uses the given gRPC channel to invoke the given method. The given descriptor source39// is used to determine the type of method and the type of request and response message. The given40// headers are sent as request metadata. Methods on the given event handler are called as the41// invocation proceeds.42//43// The given requestData function supplies the actual data to send. It should return io.EOF when44// there is no more request data. If the method being invoked is a unary or server-streaming RPC45// (e.g. exactly one request message) and there is no request data (e.g. the first invocation of46// the function returns io.EOF), then an empty request message is sent.47//48// If the requestData function and the given event handler coordinate or share any state, they should49// be thread-safe. This is because the requestData function may be called from a different goroutine50// than the one invoking event callbacks. (This only happens for bi-directional streaming RPCs, where51// one goroutine sends request messages and another consumes the response messages).52func InvokeRPC(ctx context.Context, source DescriptorSource, ch grpcdynamic.Channel, methodName string,53	headers []string, handler InvocationEventHandler, requestData RequestSupplier) (string, error) {54	md := MetadataFromHeaders(headers)55	svc, mth := parseSymbol(methodName)56	if svc == "" || mth == "" {57		return "", fmt.Errorf("given method name %q is not in expected format: 'service/method' or 'service.method'", methodName)58	}59	dsc, err := source.FindSymbol(svc)60	if err != nil {61		if isNotFoundError(err) {62			return "", fmt.Errorf("target server does not expose service %q", svc)63		}64		return "", fmt.Errorf("failed to query for service descriptor %q: %v", svc, err)65	}66	sd, ok := dsc.(*desc.ServiceDescriptor)67	if !ok {68		return "", fmt.Errorf("target server does not expose service %q", svc)69	}70	mtd := sd.FindMethodByName(mth)71	if mtd == nil {72		return "", fmt.Errorf("service %q does not include a method named %q", svc, mth)73	}74	//handler.OnResolveMethod(mtd)75	// we also download any applicable extensions so we can provide full support for parsing user-provided data76	var ext dynamic.ExtensionRegistry77	alreadyFetched := map[string]bool{}78	if err = fetchAllExtensions(source, &ext, mtd.GetInputType(), alreadyFetched); err != nil {79		return "", fmt.Errorf("error resolving server extensions for message %s: %v", mtd.GetInputType().GetFullyQualifiedName(), err)80	}81	if err = fetchAllExtensions(source, &ext, mtd.GetOutputType(), alreadyFetched); err != nil {82		return "", fmt.Errorf("error resolving server extensions for message %s: %v", mtd.GetOutputType().GetFullyQualifiedName(), err)83	}84	msgFactory := dynamic.NewMessageFactoryWithExtensionRegistry(&ext)85	req := msgFactory.NewMessage(mtd.GetInputType())86	//handler.OnSendHeaders(md)87	ctx = metadata.NewOutgoingContext(ctx, md)88	stub := grpcdynamic.NewStubWithMessageFactory(ch, msgFactory)...

handler.go

Source:handler.go

...70	default:71		return http.StatusInternalServerError72	}73}74// OnResolveMethod is called with a descriptor of the method that is being invoked.75func (h *grpcHandler) OnResolveMethod(*desc.MethodDescriptor) {76}77// OnSendHeaders is called with the request metadata that is being sent.78func (h *grpcHandler) OnSendHeaders(metadata.MD) {79}80// OnReceiveHeaders is called when response headers have been received.81func (h *grpcHandler) OnReceiveHeaders(md metadata.MD) {82}83func (h *grpcHandler) OnReceiveResponse(resp proto.Message) {84	h.ml.Lock()85	defer h.ml.Unlock()86	h.msgs = append(h.msgs, resp)87}88func (h *grpcHandler) OnReceiveTrailers(s *status.Status, meta metadata.MD) {89	h.code = s.Code()...

eventhandler.go

Source:eventhandler.go

...21			AnyResolver:  resolver,22		},23	}24}25func (h *EventHandler) OnResolveMethod(_ *desc.MethodDescriptor) {26}27func (h *EventHandler) OnSendHeaders(_ metadata.MD) {28}29func (h *EventHandler) OnReceiveHeaders(_ metadata.MD) {30}31func (h *EventHandler) OnReceiveResponse(message proto.Message) {32	if err := h.marshaler.Marshal(h.writer, message); err != nil {33		logx.Error(err)34	}35}36func (h *EventHandler) OnReceiveTrailers(status *status.Status, _ metadata.MD) {37	h.Status = status38}...

OnResolveMethod

Using AI Code Generation

1import (2type server struct{}3func (s *server) OnResolveMethod(ctx context.Context, req *grpc.ResolveMethodRequest) (*grpc.ResolveMethodResponse, error) {4	fmt.Println("OnResolveMethod called")5	return &grpc.ResolveMethodResponse{6	}, nil7}8func main() {9	lis, err := net.Listen("tcp", ":9000")10	if err != nil {11		log.Fatalf("failed to listen: %v", err)12	}13	s := grpc.NewServer(14		grpc.CustomCodec(&codec{}),15		grpc.UnknownServiceHandler(func(srv interface{}, stream grpc.ServerStream) error {16			fmt.Println("UnknownServiceHandler called")17		}),18	grpc.RegisterResolveMethodServiceServer(s, &server{})19	reflection.Register(s)20	if err := s.Serve(lis); err != nil {21		log.Fatalf("failed to serve: %v", err)22	}23}24import (25func main() {26	resolver.Register(r)27	if err != nil {28		log.Fatalf("did not connect: %v", err)29	}30	defer conn.Close()31	c := grpc.NewClientConn(conn, grpc.WithInsecure())32	ctx := context.Background()33	md := metadata.Pairs("content-type", "application/grpc+proto")34	ctx = metadata.NewOutgoingContext(ctx, md)35	var resp interface{}36	err = c.Invoke(ctx, "/grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo", nil, &resp)37	if err != nil {38		log.Fatalf("Invoke failed: %v", err)39	}40	fmt.Println(resp

OnResolveMethod

Using AI Code Generation

1func main() {2    conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())3    if err != nil {4        log.Fatalf("did not connect: %v", err)5    }6    defer conn.Close()7    c := customer.NewCustomerClient(conn)8    response, err := c.OnResolveMethod(context.Background(), &customer.CustomerRequest{Name: name})9    if err != nil {10        log.Fatalf("error while calling OnResolveMethod RPC: %v", err)11    }12    log.Printf("Response from OnResolveMethod: %v", response.Message)13}14func main() {15    conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())16    if err != nil {17        log.Fatalf("did not connect: %v", err)18    }19    defer conn.Close()20    c := customer.NewCustomerClient(conn)21    response, err := c.OnResolveMethod(context.Background(), &customer.CustomerRequest{Name: name})22    if err != nil {23        log.Fatalf("error while calling OnResolveMethod RPC: %v", err)24    }25    log.Printf("Response from OnResolveMethod: %v", response.Message)26}27func main() {28    conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())29    if err != nil {30        log.Fatalf("did not connect: %v", err)31    }32    defer conn.Close()33    c := customer.NewCustomerClient(conn)34    response, err := c.OnResolveMethod(context.Background(), &customer.CustomerRequest{Name: name})35    if err != nil {36        log.Fatalf("error while calling OnResolveMethod RPC: %v", err)37    }38    log.Printf("Response from OnResolveMethod: %v", response.Message)39}

OnResolveMethod

Using AI Code Generation

1func (s *server) OnResolveMethod(ctx context.Context, method string) (context.Context, *grpc.MethodDesc, error) {2        log.Printf("OnResolveMethod %v", method)3        return ctx, &grpc.MethodDesc{4                Handler: func(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {5                        var req struct{}6                        if err := dec(&req); err != nil {7                        }8                        log.Println("OnResolveMethod - Handler")9                },10        }, nil11}12func (s *server) OnResolveStream(ctx context.Context, method string) (context.Context, *grpc.StreamDesc, error) {13        log.Printf("OnResolveStream %v", method)14        return ctx, &grpc.StreamDesc{15                Handler:       func(srv interface{}, stream grpc.ServerStream) error { return nil },16        }, nil17}18func (s *server) OnServerConnStart(ctx context.Context, conn *grpc.ClientConn) context.Context {19        log.Printf("OnServerConnStart %v", conn)20}21func (s *server) OnServerConnClose(ctx context.Context, conn *grpc.ClientConn, err error) {22        log.Printf("OnServerConnClose %v", conn)23}24func (s *server) OnServerStreamClose(ctx context.Context, desc *grpc.StreamDesc, err error) {25        log.Printf("OnServerStreamClose %v", desc)26}27func (s *server) OnServerMessage(ctx context.Context, m interface{}, err error) context.Context {28        log.Printf("OnServerMessage %v", m)29}

OnResolveMethod

Using AI Code Generation

1import (2type server struct {3}4func main() {5	lis, err := net.Listen("tcp", ":8080")6	if err != nil {7		log.Fatalf("failed to listen: %v", err)8	}9	s := grpc.NewServer()10	pb.RegisterxxxxxxServer(s, &server{})11	if err := s.Serve(lis); err != nil {12		log.Fatalf("failed to serve: %v", err)13	}14}15import (16type server struct {17}18func main() {19	lis, err := net.Listen("tcp", ":8080")20	if err != nil {21		log.Fatalf("failed to listen: %v", err)22	}23	s := grpc.NewServer()24	pb.RegisterxxxxxxServer(s, &server{})25	if err := s.Serve(lis); err != nil {26		log.Fatalf("failed to serve: %v", err)27	}28}29import (30type server struct {31}32func main() {33	lis, err := net.Listen("tcp", ":8080")34	if err != nil {35		log.Fatalf("failed to listen: %v", err)36	}37	s := grpc.NewServer()38	pb.RegisterxxxxxxServer(s, &server{})39	if err := s.Serve(lis); err != nil {40		log.Fatalf("failed to serve: %v", err)41	}42}43import (

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