func fillTreeWithMethod(tree *tree, key string, proto *descriptor.MethodDescriptorProto, loc string, locs map[string]*descriptor.SourceCodeInfo_Location) *method {
key = fmt.Sprintf("%s.%s", key, proto.GetName())
tree.methods[key] = &method{key: key, comment: getComment(loc, locs), MethodDescriptorProto: proto}
if input, ok := tree.messages[proto.GetInputType()]; ok {
tree.methods[key].input = input
}
if proto.GetClientStreaming() {
tree.methods[key].inputStream = true
}
if output, ok := tree.messages[proto.GetOutputType()]; ok {
tree.methods[key].output = output
}
if proto.GetServerStreaming() {
tree.methods[key].outputStream = true
}
if proto.Options != nil && protobuf.HasExtension(proto.Options, gateway.E_Http) {
ext, err := protobuf.GetExtension(proto.Options, gateway.E_Http)
if err == nil {
if opts, ok := ext.(*gateway.HttpRule); ok {
if endpoint := newEndpoint(opts); endpoint != nil {
tree.methods[key].endpoints = append(tree.methods[key].endpoints, endpoint)
}
for _, opts := range opts.AdditionalBindings {
if endpoint := newEndpoint(opts); endpoint != nil {
tree.methods[key].endpoints = append(tree.methods[key].endpoints, endpoint)
}
}
}
}
}
return tree.methods[key]
}
func (g *grpc) generateServerMethod(servName string, method *pb.MethodDescriptorProto) string {
methName := generator.CamelCase(method.GetName())
hname := fmt.Sprintf("_%s_%s_Handler", servName, methName)
inType := g.typeName(method.GetInputType())
outType := g.typeName(method.GetOutputType())
g.P()
serverType := servName + "Server"
g.P("// _", serverType, ".", methName, "(", inType, ") ", outType)
g.P("var _ = ", inType, "{} // to prevent error, if not directly used")
g.P("var _ = ", outType, "{} // to prevent error, if not directly used")
g.P("func (impl* _", serverType, " )", methName, "(c web.C, w http.ResponseWriter, r *http.Request) {")
if method.GetServerStreaming() || method.GetClientStreaming() {
g.P(" w.WriteHeader(501)")
g.P(" w.Write([]byte(`Streaming functions over http are not supported`))")
g.P(" return")
} else {
g.P(" in := ", inType, "{}")
g.P(" content, err := ioutil.ReadAll(r.Body)")
g.P(" defer r.Body.Close()")
g.P(" if err != nil {")
g.P(" w.WriteHeader(408)")
g.P(" w.Write([]byte(err.Error()))")
g.P(" log.Println(err.Error())")
g.P(" return")
g.P(" }")
g.P(" err = json.Unmarshal(content, &in)")
g.P(" if err != nil {")
g.P(" w.WriteHeader(400)")
g.P(" w.Write([]byte(err.Error()))")
g.P(" log.Println(err.Error())")
g.P(" return")
g.P(" }")
g.P(" res,err := impl.handler.", methName, "(context.Background(),&in)")
g.P(" if err != nil {")
g.P(" w.WriteHeader(500)")
g.P(" w.Write([]byte(err.Error()))")
g.P(" log.Println(err.Error())")
g.P(" return")
g.P(" }")
g.P(" json.NewEncoder(w).Encode(res)")
}
g.P("}")
g.P()
return hname
}
func (p *protoBufErrors) lintProtoRPCMethod(
pathIndex int32,
parentPath []int32,
serviceMethod *descriptor.MethodDescriptorProto,
) {
path := append(
parentPath,
pathRPCMethod,
pathIndex,
)
if !isCamelCase(serviceMethod.GetName()) {
p.addError(&protoBufError{
path: path,
errorCode: errorRPCMethodCase,
errorString: serviceMethod.GetName(),
})
}
}
func parsePath(msgs map[string]message, method *google_protobuf.MethodDescriptorProto, path string) (ret []field) {
parts := strings.Split(path, "/")
for _, p := range parts {
if len(p) > 0 && p[0] == '{' && p[len(p)-1] == '}' {
found := false
for _, field := range msgs[method.GetInputType()].Fields {
if field.ProtoName == p[1:len(p)-1] {
ret = append(ret, field)
found = true
}
}
if !found {
ret = append(ret, field{"", ""})
}
} else {
ret = append(ret, field{"", ""})
}
}
return
}
func (r *Registry) newMethod(svc *Service, md *descriptor.MethodDescriptorProto, opts *options.HttpRule) (*Method, error) {
requestType, err := r.LookupMsg(svc.File.GetPackage(), md.GetInputType())
if err != nil {
return nil, err
}
responseType, err := r.LookupMsg(svc.File.GetPackage(), md.GetOutputType())
if err != nil {
return nil, err
}
meth := &Method{
Service: svc,
MethodDescriptorProto: md,
RequestType: requestType,
ResponseType: responseType,
}
newBinding := func(opts *options.HttpRule, idx int) (*Binding, error) {
var (
httpMethod string
pathTemplate string
)
switch {
case opts.GetGet() != "":
httpMethod = "GET"
pathTemplate = opts.GetGet()
if opts.Body != "" {
return nil, fmt.Errorf("needs request body even though http method is GET: %s", md.GetName())
}
case opts.GetPut() != "":
httpMethod = "PUT"
pathTemplate = opts.GetPut()
case opts.GetPost() != "":
httpMethod = "POST"
pathTemplate = opts.GetPost()
case opts.GetDelete() != "":
httpMethod = "DELETE"
pathTemplate = opts.GetDelete()
if opts.Body != "" {
return nil, fmt.Errorf("needs request body even though http method is DELETE: %s", md.GetName())
}
case opts.GetPatch() != "":
httpMethod = "PATCH"
pathTemplate = opts.GetPatch()
case opts.GetCustom() != nil:
custom := opts.GetCustom()
httpMethod = custom.Kind
pathTemplate = custom.Path
default:
glog.Errorf("No pattern specified in google.api.HttpRule: %s", md.GetName())
return nil, fmt.Errorf("none of pattern specified")
}
parsed, err := httprule.Parse(pathTemplate)
if err != nil {
return nil, err
}
tmpl := parsed.Compile()
if md.GetClientStreaming() && len(tmpl.Fields) > 0 {
return nil, fmt.Errorf("cannot use path parameter in client streaming")
}
b := &Binding{
Method: meth,
Index: idx,
PathTmpl: tmpl,
HTTPMethod: httpMethod,
}
for _, f := range tmpl.Fields {
param, err := r.newParam(meth, f)
if err != nil {
return nil, err
}
b.PathParams = append(b.PathParams, param)
}
// TODO(yugui) Handle query params
b.Body, err = r.newBody(meth, opts.Body)
if err != nil {
return nil, err
}
return b, nil
}
b, err := newBinding(opts, 0)
if err != nil {
return nil, err
}
meth.Bindings = append(meth.Bindings, b)
for i, additional := range opts.GetAdditionalBindings() {
if len(additional.AdditionalBindings) > 0 {
return nil, fmt.Errorf("additional_binding in additional_binding not allowed: %s.%s", svc.GetName(), meth.GetName())
}
b, err := newBinding(additional, i+1)
if err != nil {
return nil, err
}
meth.Bindings = append(meth.Bindings, b)
}
return meth, nil
}
func (g *grpc) generateServerMethod(servName string, method *pb.MethodDescriptorProto) string {
methName := generator.CamelCase(method.GetName())
hname := fmt.Sprintf("_%s_%s_Handler", servName, methName)
inType := g.typeName(method.GetInputType())
outType := g.typeName(method.GetOutputType())
if !method.GetServerStreaming() && !method.GetClientStreaming() {
g.P("func ", hname, "(srv interface{}, ctx ", contextPkg, ".Context, dec func(interface{}) error) (interface{}, error) {")
g.P("in := new(", inType, ")")
g.P("if err := dec(in); err != nil { return nil, err }")
g.P("out, err := srv.(", servName, "Server).", methName, "(ctx, in)")
g.P("if err != nil { return nil, err }")
g.P("return out, nil")
g.P("}")
g.P()
return hname
}
streamType := unexport(servName) + methName + "Server"
g.P("func ", hname, "(srv interface{}, stream ", grpcPkg, ".ServerStream) error {")
if !method.GetClientStreaming() {
g.P("m := new(", inType, ")")
g.P("if err := stream.RecvMsg(m); err != nil { return err }")
g.P("return srv.(", servName, "Server).", methName, "(m, &", streamType, "{stream})")
} else {
g.P("return srv.(", servName, "Server).", methName, "(&", streamType, "{stream})")
}
g.P("}")
g.P()
genSend := method.GetServerStreaming()
genSendAndClose := !method.GetServerStreaming()
genRecv := method.GetClientStreaming()
// Stream auxiliary types and methods.
g.P("type ", servName, "_", methName, "Server interface {")
if genSend {
g.P("Send(*", outType, ") error")
}
if genSendAndClose {
g.P("SendAndClose(*", outType, ") error")
}
if genRecv {
g.P("Recv() (*", inType, ", error)")
}
g.P(grpcPkg, ".ServerStream")
g.P("}")
g.P()
g.P("type ", streamType, " struct {")
g.P(grpcPkg, ".ServerStream")
g.P("}")
g.P()
if genSend {
g.P("func (x *", streamType, ") Send(m *", outType, ") error {")
g.P("return x.ServerStream.SendMsg(m)")
g.P("}")
g.P()
}
if genSendAndClose {
g.P("func (x *", streamType, ") SendAndClose(m *", outType, ") error {")
g.P("return x.ServerStream.SendMsg(m)")
g.P("}")
g.P()
}
if genRecv {
g.P("func (x *", streamType, ") Recv() (*", inType, ", error) {")
g.P("m := new(", inType, ")")
g.P("if err := x.ServerStream.RecvMsg(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
return hname
}
// generateServerSignature returns the server-side signature for a method.
func (g *grpc) generateServerSignature(servName string, method *pb.MethodDescriptorProto) string {
origMethName := method.GetName()
methName := generator.CamelCase(origMethName)
if reservedClientName[methName] {
methName += "_"
}
var reqArgs []string
ret := "error"
if !method.GetServerStreaming() && !method.GetClientStreaming() {
reqArgs = append(reqArgs, contextPkg+".Context")
ret = "(*" + g.typeName(method.GetOutputType()) + ", error)"
}
if !method.GetClientStreaming() {
reqArgs = append(reqArgs, "*"+g.typeName(method.GetInputType()))
}
if method.GetServerStreaming() || method.GetClientStreaming() {
reqArgs = append(reqArgs, servName+"_"+generator.CamelCase(origMethName)+"Server")
}
return methName + "(" + strings.Join(reqArgs, ", ") + ") " + ret
}
func (g *grpc) generateClientMethod(servName, fullServName, serviceDescVar string, method *pb.MethodDescriptorProto, descExpr string) {
sname := fmt.Sprintf("/%s/%s", fullServName, method.GetName())
methName := generator.CamelCase(method.GetName())
inType := g.typeName(method.GetInputType())
outType := g.typeName(method.GetOutputType())
g.P("func (c *", unexport(servName), "Client) ", g.generateClientSignature(servName, method), "{")
if !method.GetServerStreaming() && !method.GetClientStreaming() {
g.P("out := new(", outType, ")")
// TODO: Pass descExpr to Invoke.
g.P("err := ", grpcPkg, `.Invoke(ctx, "`, sname, `", in, out, c.cc, opts...)`)
g.P("if err != nil { return nil, err }")
g.P("return out, nil")
g.P("}")
g.P()
return
}
streamType := unexport(servName) + methName + "Client"
g.P("stream, err := ", grpcPkg, ".NewClientStream(ctx, ", descExpr, `, c.cc, "`, sname, `", opts...)`)
g.P("if err != nil { return nil, err }")
g.P("x := &", streamType, "{stream}")
if !method.GetClientStreaming() {
g.P("if err := x.ClientStream.SendMsg(in); err != nil { return nil, err }")
g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
}
g.P("return x, nil")
g.P("}")
g.P()
genSend := method.GetClientStreaming()
genRecv := method.GetServerStreaming()
genCloseAndRecv := !method.GetServerStreaming()
// Stream auxiliary types and methods.
g.P("type ", servName, "_", methName, "Client interface {")
if genSend {
g.P("Send(*", inType, ") error")
}
if genRecv {
g.P("Recv() (*", outType, ", error)")
}
if genCloseAndRecv {
g.P("CloseAndRecv() (*", outType, ", error)")
}
g.P(grpcPkg, ".ClientStream")
g.P("}")
g.P()
g.P("type ", streamType, " struct {")
g.P(grpcPkg, ".ClientStream")
g.P("}")
g.P()
if genSend {
g.P("func (x *", streamType, ") Send(m *", inType, ") error {")
g.P("return x.ClientStream.SendMsg(m)")
g.P("}")
g.P()
}
if genRecv {
g.P("func (x *", streamType, ") Recv() (*", outType, ", error) {")
g.P("m := new(", outType, ")")
g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
if genCloseAndRecv {
g.P("func (x *", streamType, ") CloseAndRecv() (*", outType, ", error) {")
g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
g.P("m := new(", outType, ")")
g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
}
// generateClientSignature returns the client-side signature for a method.
func (g *grpc) generateClientSignature(servName string, method *pb.MethodDescriptorProto) string {
origMethName := method.GetName()
methName := generator.CamelCase(origMethName)
if reservedClientName[methName] {
methName += "_"
}
reqArg := ", in *" + g.typeName(method.GetInputType())
if method.GetClientStreaming() {
reqArg = ""
}
respName := "*" + g.typeName(method.GetOutputType())
if method.GetServerStreaming() || method.GetClientStreaming() {
respName = servName + "_" + generator.CamelCase(origMethName) + "Client"
}
return fmt.Sprintf("%s(ctx %s.Context%s, opts ...%s.CallOption) (%s, error)", methName, contextPkg, reqArg, grpcPkg, respName)
}
func (g *micro) generateServerMethod(servName string, method *pb.MethodDescriptorProto) string {
methName := generator.CamelCase(method.GetName())
hname := fmt.Sprintf("_%s_%s_Handler", servName, methName)
serveType := servName + "Handler"
inType := g.typeName(method.GetInputType())
outType := g.typeName(method.GetOutputType())
if !method.GetServerStreaming() && !method.GetClientStreaming() {
g.P("func (h *", servName, ") ", methName, "(ctx ", contextPkg, ".Context, in *", inType, ", out *", outType, ") error {")
g.P("return h.", serveType, ".", methName, "(ctx, in, out)")
g.P("}")
g.P()
return hname
}
streamType := unexport(servName) + methName + "Stream"
g.P("func (h *", servName, ") ", methName, "(ctx ", contextPkg, ".Context, stream server.Streamer) error {")
if !method.GetClientStreaming() {
g.P("m := new(", inType, ")")
g.P("if err := stream.Recv(m); err != nil { return err }")
g.P("return h.", serveType, ".", methName, "(ctx, m, &", streamType, "{stream})")
} else {
g.P("return h.", serveType, ".", methName, "(ctx, &", streamType, "{stream})")
}
g.P("}")
g.P()
genSend := method.GetServerStreaming()
// genSendAndClose := !method.GetServerStreaming()
genRecv := method.GetClientStreaming()
// Stream auxiliary types and methods.
g.P("type ", servName, "_", methName, "Stream interface {")
g.P("SendMsg(interface{}) error")
g.P("RecvMsg(interface{}) error")
g.P("Close() error")
if genSend {
g.P("Send(*", outType, ") error")
}
/*
if genSendAndClose {
g.P("SendAndClose(*", outType, ") error")
}
*/
if genRecv {
g.P("Recv() (*", inType, ", error)")
}
g.P("}")
g.P()
g.P("type ", streamType, " struct {")
g.P("stream ", serverPkg, ".Streamer")
g.P("}")
g.P()
g.P("func (x *", streamType, ") Close() error {")
g.P("return x.stream.Close()")
g.P("}")
g.P()
g.P("func (x *", streamType, ") SendMsg(m interface{}) error {")
g.P("return x.stream.Send(m)")
g.P("}")
g.P()
g.P("func (x *", streamType, ") RecvMsg(m interface{}) error {")
g.P("return x.stream.Recv(m)")
g.P("}")
g.P()
if genSend {
g.P("func (x *", streamType, ") Send(m *", outType, ") error {")
g.P("return x.stream.Send(m)")
g.P("}")
g.P()
}
/*
if genSendAndClose {
g.P("func (x *", streamType, ") SendAndClose(m *", outType, ") error {")
g.P("return x.Streamer.SendR(m)")
g.P("}")
g.P()
}
*/
if genRecv {
g.P("func (x *", streamType, ") Recv() (*", inType, ", error) {")
g.P("m := new(", inType, ")")
g.P("if err := x.stream.Recv(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
return hname
}
func (g *micro) generateClientMethod(reqServ, servName, serviceDescVar string, method *pb.MethodDescriptorProto, descExpr string) {
reqMethod := fmt.Sprintf("%s.%s", servName, method.GetName())
methName := generator.CamelCase(method.GetName())
inType := g.typeName(method.GetInputType())
outType := g.typeName(method.GetOutputType())
g.P("func (c *", unexport(servName), "Client) ", g.generateClientSignature(servName, method), "{")
if !method.GetServerStreaming() && !method.GetClientStreaming() {
g.P(`req := c.c.NewRequest(c.serviceName, "`, reqMethod, `", in)`)
g.P("out := new(", outType, ")")
// TODO: Pass descExpr to Invoke.
g.P("err := ", `c.c.Call(ctx, req, out, opts...)`)
g.P("if err != nil { return nil, err }")
g.P("return out, nil")
g.P("}")
g.P()
return
}
streamType := unexport(servName) + methName + "Client"
g.P(`req := c.c.NewRequest(c.serviceName, "`, reqMethod, `", &`, inType, `{})`)
g.P("stream, err := c.c.Stream(ctx, req, opts...)")
g.P("if err != nil { return nil, err }")
if !method.GetClientStreaming() {
g.P("if err := stream.Send(in); err != nil { return nil, err }")
}
g.P("return &", streamType, "{stream}, nil")
g.P("}")
g.P()
genSend := method.GetClientStreaming()
genRecv := method.GetServerStreaming()
//genCloseAndRecv := !method.GetServerStreaming()
// Stream auxiliary types and methods.
g.P("type ", servName, "_", methName, "Client interface {")
g.P("SendMsg(interface{}) error")
g.P("RecvMsg(interface{}) error")
g.P("Close() error")
if genSend {
g.P("Send(*", inType, ") error")
}
if genRecv {
g.P("Recv() (*", outType, ", error)")
}
g.P("}")
g.P()
g.P("type ", streamType, " struct {")
g.P("stream ", clientPkg, ".Streamer")
g.P("}")
g.P()
g.P("func (x *", streamType, ") Close() error {")
g.P("return x.stream.Close()")
g.P("}")
g.P()
g.P("func (x *", streamType, ") SendMsg(m interface{}) error {")
g.P("return x.stream.Send(m)")
g.P("}")
g.P()
g.P("func (x *", streamType, ") RecvMsg(m interface{}) error {")
g.P("return x.stream.Recv(m)")
g.P("}")
g.P()
if genSend {
g.P("func (x *", streamType, ") Send(m *", inType, ") error {")
g.P("return x.stream.Send(m)")
g.P("}")
g.P()
}
if genRecv {
g.P("func (x *", streamType, ") Recv() (*", outType, ", error) {")
g.P("m := new(", outType, ")")
g.P("err := x.stream.Recv(m)")
g.P("if err != nil {")
g.P("return nil, err")
g.P("}")
g.P("return m, nil")
g.P("}")
g.P()
}
}
func (g *grpc) generateServerMethod(servName string, method *pb.MethodDescriptorProto) string {
methName := generator.CamelCase(method.GetName())
hname := fmt.Sprintf("_%s_%s_Handler", servName, methName)
inType := g.typeName(method.GetInputType())
outType := g.typeName(method.GetOutputType())
g.P("// methName: ", methName)
g.P("// hname: ", hname)
g.P("// servName: ", servName)
g.P("// method.GetName(): ", method.GetName())
g.P("// inType: ", inType)
g.P("// outType: ", outType)
g.P()
serverType := servName + "Server"
g.P("func (impl* _", serverType, " )_", methName, "(c web.C, w http.ResponseWriter, r *http.Request) {")
g.P(" in := ", inType, "{}")
g.P(" content, err := ioutil.ReadAll(r.Body)")
g.P(" defer r.Body.Close()")
g.P(" if err != nil {")
g.P(" w.WriteHeader(400)")
g.P(" w.Write([]byte(err.Error()))")
g.P(" fmt.Println(err.Error())")
g.P(" return")
g.P(" }")
g.P(" err = json.Unmarshal(content, in)")
g.P(" if err != nil {")
g.P(" w.WriteHeader(400)")
g.P(" w.Write([]byte(err.Error()))")
g.P(" fmt.Println(err.Error())")
g.P(" return")
g.P(" }")
//g.P(" return err")
//g.P(" if request2Json(r, &in, w) != nil {")
//g.P(" return")
//g.P(" }")
//g.P(" json.NewEncoder(w).Encode(handler.logic.setContext(&c).ConnectionTest(in))")
g.P(" res,err := impl.handler.", methName, "(context.TODO(),&in)")
g.P(" if err != nil {")
g.P(" w.WriteHeader(400)")
g.P(" w.Write([]byte(err.Error()))")
g.P(" fmt.Println(err.Error())")
g.P(" return")
g.P(" }")
g.P(" json.NewEncoder(w).Encode(res)")
g.P("}")
g.P()
/*if !method.GetServerStreaming() && !method.GetClientStreaming() {
g.P("func ", hname, "(srv interface{}, ctx ", contextPkg, ".Context, codec ", grpcPkg, ".Codec, buf []byte) (interface{}, error) {")
g.P("in := new(", inType, ")")
g.P("if err := codec.Unmarshal(buf, in); err != nil { return nil, err }")
g.P("out, err := srv.(", servName, "Server).", methName, "(ctx, in)")
g.P("if err != nil { return nil, err }")
g.P("return out, nil")
g.P("}")
g.P()
return hname
}
streamType := unexport(servName) + methName + "Server"
g.P("func ", hname, "(srv interface{}, stream ", grpcPkg, ".ServerStream) error {")
if !method.GetClientStreaming() {
g.P("m := new(", inType, ")")
g.P("if err := stream.RecvMsg(m); err != nil { return err }")
g.P("return srv.(", servName, "Server).", methName, "(m, &", streamType, "{stream})")
} else {
g.P("return srv.(", servName, "Server).", methName, "(&", streamType, "{stream})")
}
g.P("}")
g.P()
genSend := method.GetServerStreaming()
genSendAndClose := !method.GetServerStreaming()
genRecv := method.GetClientStreaming()
// Stream auxiliary types and methods.
g.P("type ", servName, "_", methName, "Server interface {")
if genSend {
g.P("Send(*", outType, ") error")
}
if genSendAndClose {
g.P("SendAndClose(*", outType, ") error")
}
if genRecv {
g.P("Recv() (*", inType, ", error)")
}
g.P(grpcPkg, ".ServerStream")
g.P("}")
g.P()
g.P("type ", streamType, " struct {")
g.P(grpcPkg, ".ServerStream")
g.P("}")
g.P()
if genSend {
g.P("func (x *", streamType, ") Send(m *", outType, ") error {")
g.P("return x.ServerStream.SendMsg(m)")
g.P("}")
g.P()
}
if genSendAndClose {
g.P("func (x *", streamType, ") SendAndClose(m *", outType, ") error {")
g.P("return x.ServerStream.SendMsg(m)")
g.P("}")
g.P()
}
if genRecv {
g.P("func (x *", streamType, ") Recv() (*", inType, ", error) {")
g.P("m := new(", inType, ")")
g.P("if err := x.ServerStream.RecvMsg(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
*/
g.P()
return hname
}