allow to generate standalone code

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

http.go

@@ -1,21 +1,10 @@
 package main
 
 import (
-	"strings"
-
-	openapi_options "github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2/options"
 	"google.golang.org/protobuf/compiler/protogen"
-	"google.golang.org/protobuf/proto"
 )
 
-type Error struct {
-	packageName string
-	types       []string
-}
-
 func (g *Generator) httpGenerate(component string, plugin *protogen.Plugin) error {
-	errors := make(map[string]struct{})
-
 	for _, file := range plugin.Files {
 		if !file.Generate {
 			continue
@@ -25,7 +14,11 @@ func (g *Generator) httpGenerate(component string, plugin *protogen.Plugin) erro
 		}
 
 		gname := file.GeneratedFilenamePrefix + "_micro_" + component + ".pb.go"
-		gfile := plugin.NewGeneratedFile(gname, file.GoImportPath)
+		path := file.GoImportPath
+		if g.standalone {
+			path = "."
+		}
+		gfile := plugin.NewGeneratedFile(gname, path)
 
 		gfile.P("// Code generated by protoc-gen-micro")
 		gfile.P("// source: ", *file.Proto.Name)
@@ -44,88 +37,8 @@ func (g *Generator) httpGenerate(component string, plugin *protogen.Plugin) erro
 			generateServiceServer(gfile, service)
 			generateServiceServerMethods(gfile, service)
 			generateServiceRegister(gfile, service)
-			if component == "http" {
-				for k, v := range getErrors(service) {
-					errors[k] = v
-				}
-			}
-		}
-	}
-
-	files := make(map[string]*Error)
-	for _, file := range plugin.Files {
-		if !file.Generate {
-			continue
-		}
-
-		err, ok := files[file.GeneratedFilenamePrefix]
-		if !ok {
-			err = &Error{packageName: string(file.GoPackageName)}
-		}
-		fok := false
-		for _, message := range file.Messages {
-			if _, ok := errors["."+string(message.Desc.FullName())]; ok {
-				fok = true
-				err.types = append(err.types, string(message.Desc.FullName()))
-			}
-		}
-		if fok {
-			files[file.GeneratedFilenamePrefix] = err
-		}
-	}
-
-	for _, file := range plugin.Files {
-		for efile, err := range files {
-			if file.GeneratedFilenamePrefix != efile {
-				continue
-			}
-			gfile := plugin.NewGeneratedFile(efile+"_micro_errors.pb.go", file.GoImportPath)
-			generateServiceErrors(gfile, err)
 		}
 	}
 
 	return nil
 }
-
-func getErrors(service *protogen.Service) map[string]struct{} {
-	errors := make(map[string]struct{})
-
-	for _, method := range service.Methods {
-		if method.Desc.Options() == nil {
-			continue
-		}
-		if !proto.HasExtension(method.Desc.Options(), openapi_options.E_Openapiv2Operation) {
-			continue
-		}
-
-		opts := proto.GetExtension(method.Desc.Options(), openapi_options.E_Openapiv2Operation)
-		if opts == nil {
-			continue
-		}
-
-		r := opts.(*openapi_options.Operation)
-		for _, response := range r.Responses {
-			if response.Schema == nil || response.Schema.JsonSchema == nil {
-				continue
-			}
-			errors[response.Schema.JsonSchema.Ref] = struct{}{}
-		}
-	}
-
-	return errors
-}
-
-func generateServiceErrors(gfile *protogen.GeneratedFile, err *Error) {
-	gfile.P("// Code generated by protoc-gen-micro")
-	gfile.P("package ", err.packageName)
-	gfile.P()
-
-	gfile.Import(fmtPackage)
-
-	for _, typ := range err.types {
-		gfile.P("func (err *", typ[strings.LastIndex(typ, ".")+1:], ") Error() string {")
-		gfile.P(`return `, fmtPackage.Ident("Sprintf"), `("%#v", err)`)
-		gfile.P("}")
-		gfile.P()
-	}
-}