001/*
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019
020package org.apache.hadoop.hbase.client;
021
022import org.apache.hadoop.conf.Configuration;
023import org.apache.yetus.audience.InterfaceAudience;
024import org.apache.hadoop.hbase.util.ReflectionUtils;
025
026/**
027 * A factory class that constructs an {@link org.apache.hadoop.hbase.client.RequestController}.
028 */
029@InterfaceAudience.Public
030public final class RequestControllerFactory {
031  public static final String REQUEST_CONTROLLER_IMPL_CONF_KEY = "hbase.client.request.controller.impl";
032  /**
033   * Constructs a {@link org.apache.hadoop.hbase.client.RequestController}.
034   * @param conf The {@link Configuration} to use.
035   * @return A RequestController which is built according to the configuration.
036   */
037  public static RequestController create(Configuration conf) {
038    Class<? extends RequestController> clazz= conf.getClass(REQUEST_CONTROLLER_IMPL_CONF_KEY,
039      SimpleRequestController.class, RequestController.class);
040    return ReflectionUtils.newInstance(clazz, conf);
041  }
042}