build: expose openapi on http server

Author: leofvo

example.config.yaml

@@ -8,6 +8,7 @@ server:
   http:
     enabled: true
     port: 3476
+    expose_openapi: false
     tls:
       enabled: false
       cert: /etc/letsencrypt/live/yourdomain.com/fullchain.pem

internal/config/config.go

@@ -37,6 +37,7 @@ type (
 	HTTP struct {
 		Enabled            bool      `mapstructure:"enabled"`              // Whether the HTTP server is enabled
 		Port               string    `mapstructure:"port"`                 // Port for the HTTP server
+		ExposeOpenAPI			 bool 		 `mapstructure:"expose_openapi"` // expose OpenAPI configuration
 		TLSConfig          TLSConfig `mapstructure:"tls"`                  // TLS configuration for the HTTP server
 		CORSAllowedOrigins []string  `mapstructure:"cors_allowed_origins"` // List of allowed origins for CORS
 		CORSAllowedHeaders []string  `mapstructure:"cors_allowed_headers"` // List of allowed headers for CORS
@@ -276,6 +277,7 @@ func DefaultConfig() *Config {
 			HTTP: HTTP{
 				Enabled: true,
 				Port:    "3476",
+				ExposeOpenAPI: false,
 				TLSConfig: TLSConfig{
 					Enabled: false,
 				},

internal/servers/server.go

@@ -305,24 +305,37 @@ func (s *Container) Run(
 			}),
 		}
 
-		mux := runtime.NewServeMux(muxOpts...)
+		// Create the gRPC gateway mux
+    grpcMux := runtime.NewServeMux(muxOpts...)
 
-		if err = grpcV1.RegisterPermissionHandler(ctx, mux, conn); err != nil {
+		if err = grpcV1.RegisterPermissionHandler(ctx, grpcMux, conn); err != nil {
 			return err
 		}
-		if err = grpcV1.RegisterSchemaHandler(ctx, mux, conn); err != nil {
+		if err = grpcV1.RegisterSchemaHandler(ctx, grpcMux, conn); err != nil {
 			return err
 		}
-		if err = grpcV1.RegisterDataHandler(ctx, mux, conn); err != nil {
+		if err = grpcV1.RegisterDataHandler(ctx, grpcMux, conn); err != nil {
 			return err
 		}
-		if err = grpcV1.RegisterBundleHandler(ctx, mux, conn); err != nil {
+		if err = grpcV1.RegisterBundleHandler(ctx, grpcMux, conn); err != nil {
 			return err
 		}
-		if err = grpcV1.RegisterTenancyHandler(ctx, mux, conn); err != nil {
+		if err = grpcV1.RegisterTenancyHandler(ctx, grpcMux, conn); err != nil {
 			return err
 		}
 
+		// Create a new http.ServeMux for serving your OpenAPI file and gRPC gateway
+    httpMux := http.NewServeMux()
+
+		if srv.HTTP.ExposeOpenAPI {
+			httpMux.HandleFunc("/openapi.json", func(w http.ResponseWriter, r *http.Request) {
+				http.ServeFile(w, r, "./docs/api-reference/openapi.json")
+			})
+		}
+
+    // Handle all gRPC gateway routes
+    httpMux.Handle("/", grpcMux)
+
 		httpServer = &http.Server{
 			Addr: ":" + srv.HTTP.Port,
 			Handler: cors.New(cors.Options{
@@ -333,7 +346,7 @@ func (s *Container) Run(
 					http.MethodGet, http.MethodPost,
 					http.MethodHead, http.MethodPatch, http.MethodDelete, http.MethodPut,
 				},
-			}).Handler(mux),
+			}).Handler(httpMux),
 			ReadHeaderTimeout: 5 * time.Second,
 		}