update to never micro-proto, generate openapi

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

main.go

@@ -10,10 +10,12 @@ import (
 )
 
 var (
-	flagDebug      = flag.Bool("debug", false, "")
-	flagStandalone = flag.Bool("standalone", false, "")
-	flagComponents = flag.String("components", "micro|rpc|http|client|server", "")
-	flagTagPath    = flag.String("tag_path", "", "")
+	flagDebug       = flag.Bool("debug", false, "debug output")
+	flagStandalone  = flag.Bool("standalone", false, "generate file to standalone dir")
+	flagComponents  = flag.String("components", "micro|rpc|http|client|server|openapiv3", "specify components to generate")
+	flagTagPath     = flag.String("tag_path", "", "tag rewriting dir")
+	flagOpenapiFile = flag.String("openapi_file", "apidocs.swagger.json", "openapi file name")
+	flagHelp        = flag.Bool("help", false, "display help message")
 )
 
 func main() {
@@ -21,16 +23,24 @@ func main() {
 		ParamFunc: flag.CommandLine.Set,
 	}
 
+	flag.Parse()
+
+	if *flagHelp {
+		flag.PrintDefaults()
+		return
+	}
+
 	g := &Generator{}
 
 	opts.Run(g.Generate)
 }
 
 type Generator struct {
-	components string
-	standalone bool
-	debug      bool
-	tagPath    string
+	components  string
+	standalone  bool
+	debug       bool
+	tagPath     string
+	openapiFile string
 }
 
 func (g *Generator) Generate(plugin *protogen.Plugin) error {
@@ -40,6 +50,7 @@ func (g *Generator) Generate(plugin *protogen.Plugin) error {
 	g.debug = *flagDebug
 	g.components = *flagComponents
 	g.tagPath = *flagTagPath
+	g.openapiFile = *flagOpenapiFile
 	plugin.SupportedFeatures = uint64(pluginpb.CodeGeneratorResponse_FEATURE_PROTO3_OPTIONAL)
 
 	var genClient bool
@@ -73,6 +84,8 @@ func (g *Generator) Generate(plugin *protogen.Plugin) error {
 			err = g.gorillaGenerate(component, plugin)
 		case "chi":
 			err = g.chiGenerate(component, plugin)
+		case "openapiv3":
+			err = g.openapiv3Generate(component, plugin)
 		default:
 			err = fmt.Errorf("unknown component: %s", component)
 		}