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.client;
019
020import org.apache.hadoop.conf.Configuration;
021import org.apache.hadoop.hbase.util.ReflectionUtils;
022import org.apache.yetus.audience.InterfaceAudience;
023
024/**
025 * A factory class that constructs an {@link org.apache.hadoop.hbase.client.RequestController}.
026 */
027@InterfaceAudience.Public
028public final class RequestControllerFactory {
029  public static final String REQUEST_CONTROLLER_IMPL_CONF_KEY =
030    "hbase.client.request.controller.impl";
031
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}