// 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) 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
}
// generateService generates all the code for the named service.
func (g *grpc) generateService(file *generator.FileDescriptor, service *pb.ServiceDescriptorProto, index int) {
//path := fmt.Sprintf("6,%d", index) // 6 means service.
origServName := service.GetName()
fullServName := file.GetPackage() + "." + origServName
servName := generator.CamelCase(origServName)
/*
g.P()
g.P("// Client API for ", servName, " service")
g.P()
// Client interface.
g.P("type ", servName, "Client interface {")
for i, method := range service.Method {
g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
g.P(g.generateClientSignature(servName, method))
}
g.P("}")
g.P()
// Client structure.
g.P("type ", unexport(servName), "Client struct {")
g.P("cc *", grpcPkg, ".ClientConn")
g.P("}")
g.P()
// NewClient factory.
g.P("func New", servName, "Client (cc *", grpcPkg, ".ClientConn) ", servName, "Client {")
g.P("return &", unexport(servName), "Client{cc}")
g.P("}")
g.P()
var methodIndex, streamIndex int
*/
serviceDescVar := "_" + servName + "_serviceDesc"
/*
// Client method implementations.
for _, method := range service.Method {
var descExpr string
if !method.GetServerStreaming() && !method.GetClientStreaming() {
// Unary RPC method
descExpr = fmt.Sprintf("&%s.Methods[%d]", serviceDescVar, methodIndex)
methodIndex++
} else {
// Streaming RPC method
descExpr = fmt.Sprintf("&%s.Streams[%d]", serviceDescVar, streamIndex)
streamIndex++
}
g.generateClientMethod(servName, fullServName, serviceDescVar, method, descExpr)
}
*/
g.P("// Server API for ", servName, " service")
g.P()
g.P("// fullServName: ", fullServName)
g.P("// serviceDescVar: ", serviceDescVar)
g.P("// servName: ", servName)
g.P()
// Server interface.
serverType := servName + "Server"
//g.P("type ", serverType, " interface {")
//for i, method := range service.Method {
// g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
// g.P(g.generateServerSignature(servName, method))
//}
//g.P("}")
g.P()
g.P("func NewHandler(h ", serverType, ", prefix string) *web.Mux {")
g.P(" t := _", serverType, "{}")
g.P(" t.handler = h")
g.P(" router := web.New()")
for _, method := range service.Method {
path := strings.ToLower(servName) + "/" + method.GetName()
methName := generator.CamelCase(method.GetName())
// there should be a better way to get the options
m := method.GetOptions().String()
if m != "" {
parts := strings.Split(m, "\"")
if len(parts) == 3 {
if parts[0] == "10000:" {
path = parts[1]
}
}
}
g.P("router.Handle(prefix+\"", strings.ToLower(path), "\", t._", methName, ")")
}
g.P(" return router")
g.P("}")
g.P()
g.P("type _", serverType, " struct {")
g.P(" handler ", serverType)
g.P("}")
g.P()
// Server registration.
//g.P("func Register", servName, "Server(s *", grpcPkg, ".Server, srv ", serverType, ") {")
//g.P("s.RegisterService(&", serviceDescVar, `, srv)`)
//g.P("}")
//g.P()
// Server handler implementations.
//var handlerNames []string
for _, method := range service.Method {
g.generateServerMethod(servName, method)
//hname := g.generateServerMethod(servName, method)
//handlerNames = append(handlerNames, hname)
}
// Service descriptor.
/*
g.P("var ", serviceDescVar, " = ", grpcPkg, ".ServiceDesc {")
g.P("ServiceName: ", strconv.Quote(fullServName), ",")
g.P("HandlerType: (*", serverType, ")(nil),")
g.P("Methods: []", grpcPkg, ".MethodDesc{")
for i, method := range service.Method {
if method.GetServerStreaming() || method.GetClientStreaming() {
continue
}
g.P("{")
g.P("MethodName: ", strconv.Quote(method.GetName()), ",")
g.P("Handler: ", handlerNames[i], ",")
g.P("},")
}
g.P("},")
g.P("Streams: []", grpcPkg, ".StreamDesc{")
for i, method := range service.Method {
if !method.GetServerStreaming() && !method.GetClientStreaming() {
continue
}
g.P("{")
g.P("StreamName: ", strconv.Quote(method.GetName()), ",")
g.P("Handler: ", handlerNames[i], ",")
if method.GetServerStreaming() {
g.P("ServerStreams: true,")
}
if method.GetClientStreaming() {
g.P("ClientStreams: true,")
}
g.P("},")
}
g.P("},")
g.P("}")
g.P()
*/
}
