fix: fix errors reported by Lint CI.

.github/workflows/lint.yml

@@ -31,6 +31,5 @@ jobs:
       - name: Lint
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.60.3
-          working-directory: ${{ matrix.workdir }}
-          skip-pkg-cache: true
+          version: v1.61.0
+          working-directory: ${{ matrix.workdir }}

.golangci.yml

@@ -10,8 +10,9 @@ linters:
     - dogsled
     - durationcheck
     - errcheck
-    - exportloopref
+    # - copyloopvar # need upgrade to Go 1.22
     - govet
+    - staticcheck
     - gosimple
     - gofmt
     - gofumpt
@@ -49,7 +50,8 @@ linters:
 
 linters-settings:
   govet:
-    check-shadowing: true
+    enable:
+      - shadow
   whitespace:
     multi-func: true
   lll:

app.go

@@ -99,7 +99,6 @@ func (a *App) Run() error {
 		}
 	}
 	for _, srv := range a.opts.servers {
-		srv := srv
 		eg.Go(func() error {
 			<-ctx.Done() // wait for stop signal
 			stopCtx, cancel := context.WithTimeout(NewContext(a.opts.ctx, a), a.opts.stopTimeout)

transport/grpc/client.go

@@ -254,7 +254,7 @@ func (w *wrappedClientStream) Context() context.Context {
 }
 
 func (w *wrappedClientStream) SendMsg(m interface{}) error {
-	h := func(ctx context.Context, req interface{}) (interface{}, error) {
+	h := func(_ context.Context, req interface{}) (interface{}, error) {
 		return req, w.ClientStream.SendMsg(m)
 	}
 
@@ -272,7 +272,7 @@ func (w *wrappedClientStream) SendMsg(m interface{}) error {
 }
 
 func (w *wrappedClientStream) RecvMsg(m interface{}) error {
-	h := func(ctx context.Context, req interface{}) (interface{}, error) {
+	h := func(_ context.Context, req interface{}) (interface{}, error) {
 		return req, w.ClientStream.RecvMsg(m)
 	}
 
@@ -305,7 +305,7 @@ func streamClientInterceptor(ms []middleware.Middleware, filters []selector.Node
 			return nil, err
 		}
 
-		h := func(ctx context.Context, req interface{}) (interface{}, error) {
+		h := func(_ context.Context, _ interface{}) (interface{}, error) {
 			return streamer, nil
 		}
 

transport/grpc/interceptor.go

@@ -80,7 +80,7 @@ func (s *Server) streamServerInterceptor() grpc.StreamServerInterceptor {
 			replyHeader: headerCarrier(replyHeader),
 		})
 
-		h := func(ctx context.Context, req interface{}) (interface{}, error) {
+		h := func(_ context.Context, _ interface{}) (interface{}, error) {
 			return handler(srv, ss), nil
 		}