/*
 * 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
 *
 *     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 org.apache.hadoop.hbase.master.http.gson;

import org.apache.hadoop.hbase.Size;
import org.apache.hadoop.hbase.http.gson.ByteArraySerializer;
import org.apache.yetus.audience.InterfaceAudience;

import org.apache.hbase.thirdparty.com.google.gson.FieldNamingPolicy;
import org.apache.hbase.thirdparty.com.google.gson.Gson;
import org.apache.hbase.thirdparty.com.google.gson.GsonBuilder;

/**
 * Provides a singleton {@link Gson} instance configured just the way we like it.
 */
@InterfaceAudience.Private
public final class GsonFactory {

  private GsonFactory() {
  }

  public static Gson buildGson() {
    return new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
      .enableComplexMapKeySerialization()
      .registerTypeAdapter(byte[].class, new ByteArraySerializer())
      .registerTypeAdapter(Size.class, new SizeAsBytesSerializer()).create();
  }
}
