content: /*
   * Licensed to the Apache Software Foundation (ASF) 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
   *
   *    https://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 org.apache.bigtop.manager.grpc.utils;
  
  import com.google.protobuf.Message;
  import com.google.protobuf.MessageOrBuilder;
  import com.google.protobuf.util.JsonFormat;
  
  public class ProtobufUtil {
  
      @SuppressWarnings("unchecked")
      public static <T extends MessageOrBuilder> T fromJson(String json, Class<T> clazz) {
          try {
              Message.Builder builder =
                      (Message.Builder) clazz.getMethod("newBuilder").invoke(null);
              JsonFormat.parser().ignoringUnknownFields().merge(json, builder);
              return (T) builder.build();
          } catch (Exception e) {
              throw new RuntimeException(e);
          }
      }
  
      public static <T extends Message> String toJson(T message) {
          try {
              return JsonFormat.printer().omittingInsignificantWhitespace().print(message);
          } catch (Exception e) {
              throw new RuntimeException(e);
          }
      }
  }
  