Merge pull request #1946 from flant/prealloc-unparam-sqlclosecheck

Enable unparam, prealloc, sqlclosecheck linters

server/api.go

@@ -233,7 +233,7 @@ func (d dexAPI) ListPasswords(ctx context.Context, req *api.ListPasswordReq) (*a
 		return nil, fmt.Errorf("list passwords: %v", err)
 	}
 
-	var passwords []*api.Password
+	passwords := make([]*api.Password, 0, len(passwordList))
 	for _, password := range passwordList {
 		p := api.Password{
 			Email:    password.Email,
@@ -286,20 +286,18 @@ func (d dexAPI) ListRefresh(ctx context.Context, req *api.ListRefreshReq) (*api.
 		return nil, err
 	}
 
-	var refreshTokenRefs []*api.RefreshTokenRef
 	offlineSessions, err := d.s.GetOfflineSessions(id.UserId, id.ConnId)
 	if err != nil {
 		if err == storage.ErrNotFound {
 			// This means that this user-client pair does not have a refresh token yet.
 			// An empty list should be returned instead of an error.
-			return &api.ListRefreshResp{
-				RefreshTokens: refreshTokenRefs,
-			}, nil
+			return &api.ListRefreshResp{}, nil
 		}
 		d.logger.Errorf("api: failed to list refresh tokens %t here : %v", err == storage.ErrNotFound, err)
 		return nil, err
 	}
 
+	refreshTokenRefs := make([]*api.RefreshTokenRef, 0, len(offlineSessions.Refresh))
 	for _, session := range offlineSessions.Refresh {
 		r := api.RefreshTokenRef{
 			Id:        session.ID,

server/deviceflowhandlers.go

@@ -77,11 +77,7 @@ func (s *Server) handleDeviceCode(w http.ResponseWriter, r *http.Request) {
 		deviceCode := storage.NewDeviceCode()
 
 		// make user code
-		userCode, err := storage.NewUserCode()
-		if err != nil {
-			s.logger.Errorf("Error generating user code: %v", err)
-			s.tokenErrHelper(w, errInvalidRequest, "", http.StatusInternalServerError)
-		}
+		userCode := storage.NewUserCode()
 
 		// Generate the expire time
 		expireTime := time.Now().Add(s.deviceRequestsValidFor)

server/server.go

@@ -252,10 +252,8 @@ func newServer(ctx context.Context, c Config, rotationStrategy rotationStrategy)
 		}
 	}
 
-	instrumentHandlerCounter := func(handlerName string, handler http.Handler) http.HandlerFunc {
-		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			handler.ServeHTTP(w, r)
-		})
+	instrumentHandlerCounter := func(_ string, handler http.Handler) http.HandlerFunc {
+		return handler.ServeHTTP
 	}
 
 	if c.PrometheusRegistry != nil {
@@ -270,10 +268,10 @@ func newServer(ctx context.Context, c Config, rotationStrategy rotationStrategy)
 		}
 
 		instrumentHandlerCounter = func(handlerName string, handler http.Handler) http.HandlerFunc {
-			return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			return func(w http.ResponseWriter, r *http.Request) {
 				m := httpsnoop.CaptureMetrics(handler, w, r)
 				requestCounter.With(prometheus.Labels{"handler": handlerName, "code": strconv.Itoa(m.Code), "method": r.Method}).Inc()
-			})
+			}
 		}
 	}