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}