fix: convertion (#4140) (#4163)

* fix: convertion

* feat: add ut
Co-authored-by: 悟空 <rainchan365@163.com>

modules/cmp/resource/class.go

@@ -339,7 +339,7 @@ func (r *Resource) GetClusterTrend(ctx context.Context, ordId int64, userId stri
 		start, _ = request.Query.GetStart()
 		end, _   = request.Query.GetEnd()
 	)
-	langCodes := ctx.Value(Lang).(i18n.LanguageCodes)
+	langCodes, _ := ctx.Value(Lang).(i18n.LanguageCodes)
 	td = &Histogram{
 		Name: r.I18n(langCodes, "cluster trend"),
 	}
@@ -468,9 +468,9 @@ func (r *Resource) GetClusterTrend(ctx context.Context, ordId int64, userId stri
 func (r *Resource) GetProjectTrend(ctx context.Context, request *apistructs.TrendRequest) (*Histogram, error) {
 	var (
 		//l          = logrus.WithField("func", "*Resource.GetProjectTrend")
-		langCodes = ctx.Value(Lang).(i18n.LanguageCodes)
-		td        = new(Histogram)
-		orgID, _  = request.GetOrgID()
+		langCodes, _ = ctx.Value(Lang).(i18n.LanguageCodes)
+		td           = new(Histogram)
+		orgID, _     = request.GetOrgID()
 		//userID, _  = request.GetUserID()
 		start, _   = request.Query.GetStart()
 		end, _     = request.Query.GetEnd()

pkg/http/httpserver/wrapper.go

@@ -45,7 +45,7 @@ func WithI18nCodes(h Handler) Handler {
 
 func UnwrapI18nCodes(ctx context.Context) i18nProviders.LanguageCodes {
 	var lang struct{ Lang string }
-	if codes := ctx.Value(lang).(i18nProviders.LanguageCodes); len(codes) > 0 {
+	if codes, _ := ctx.Value(lang).(i18nProviders.LanguageCodes); len(codes) > 0 {
 		return codes
 	}
 	codes, _ := i18nProviders.ParseLanguageCode("en,zh-CN;q=0.9,zh;q=0.8,en-US;q=0.7,en-GB;q=0.6")

pkg/http/httpserver/wrapper_test.go

+// Copyright (c) 2021 Terminus, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package httpserver_test
+
+import (
+	"context"
+	"testing"
+
+	i18nProviders "github.com/erda-project/erda-infra/providers/i18n"
+	"github.com/erda-project/erda/pkg/http/httpserver"
+)
+
+func TestUnwrapI18nCodes(t *testing.T) {
+	codes := httpserver.UnwrapI18nCodes(context.Background())
+	if len(codes) == 0 {
+		t.Fatal("there should be codes")
+	}
+	t.Log(codes)
+	var lang struct{ Lang string }
+	codes, _ = i18nProviders.ParseLanguageCode("en,zh-CN;q=0.9,zh;q=0.8,en-US;q=0.7,en-GB;q=0.6")
+	ctx := context.WithValue(context.Background(), lang, codes)
+	codes = httpserver.UnwrapI18nCodes(ctx)
+	t.Log(len(codes))
+	if len(codes) == 0 {
+		t.Fatal("there should be codes")
+	}
+}