001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.master.http.gson;
019
020import org.apache.hadoop.hbase.Size;
021import org.apache.hadoop.hbase.http.gson.ByteArraySerializer;
022import org.apache.yetus.audience.InterfaceAudience;
023
024import org.apache.hbase.thirdparty.com.google.gson.FieldNamingPolicy;
025import org.apache.hbase.thirdparty.com.google.gson.Gson;
026import org.apache.hbase.thirdparty.com.google.gson.GsonBuilder;
027
028/**
029 * Provides a singleton {@link Gson} instance configured just the way we like it.
030 */
031@InterfaceAudience.Private
032public final class GsonFactory {
033
034  private GsonFactory() {
035  }
036
037  public static Gson buildGson() {
038    return new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
039      .enableComplexMapKeySerialization()
040      .registerTypeAdapter(byte[].class, new ByteArraySerializer())
041      .registerTypeAdapter(Size.class, new SizeAsBytesSerializer()).create();
042  }
043}