1   /*
2    * Copyright 2023 LINE Corporation
3    *
4    * LINE Corporation licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  
17  package com.linecorp.centraldogma.xds.internal;
18  
19  import com.google.protobuf.util.JsonFormat;
20  import com.google.protobuf.util.JsonFormat.Parser;
21  import com.google.protobuf.util.JsonFormat.Printer;
22  import com.google.protobuf.util.JsonFormat.TypeRegistry;
23  
24  import io.envoyproxy.envoy.extensions.filters.http.router.v3.Router;
25  import io.envoyproxy.envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager;
26  
27  final class JsonFormatUtil {
28  
29      private static final Printer PRINTER;
30      private static final Parser PARSER;
31  
32      static {
33          final TypeRegistry typeRegistry = TypeRegistry.newBuilder()
34                                                        .add(HttpConnectionManager.getDescriptor())
35                                                        .add(Router.getDescriptor())
36                                                        .build();
37          PRINTER = JsonFormat.printer().usingTypeRegistry(typeRegistry);
38          PARSER = JsonFormat.parser().usingTypeRegistry(typeRegistry);
39      }
40  
41      static Printer printer() {
42          return PRINTER;
43      }
44  
45      static Parser parser() {
46          return PARSER;
47      }
48  
49      private JsonFormatUtil() {}
50  }