chore: import upstream snapshot with attribution

internal/distributed/proxy/httpserver/json_render.go

@@ -0,0 +1,44 @@
+// Licensed to the LF AI & Data foundation under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you 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
+
+import (
+	"net/http"
+
+	"github.com/milvus-io/milvus/internal/json"
+)
+
+var jsonContentType = []string{"application/json; charset=utf-8"}
+
+type jsonRender struct {
+	Data any
+}
+
+// Render writes data with custom ContentType.
+func (r jsonRender) Render(w http.ResponseWriter) error {
+	r.WriteContentType(w)
+	encoder := json.NewEncoder(w)
+	return encoder.Encode(r.Data)
+}
+
+// WriteContentType writes JSON ContentType.
+func (r jsonRender) WriteContentType(w http.ResponseWriter) {
+	header := w.Header()
+	if val := header["Content-Type"]; len(val) == 0 {
+		header["Content-Type"] = jsonContentType
+	}
+}