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.thrift;
019
020import java.util.Locale;
021import org.apache.hadoop.conf.Configuration;
022import org.apache.thrift.server.TThreadedSelectorServer;
023import org.apache.thrift.transport.TNonblockingServerTransport;
024import org.apache.yetus.audience.InterfaceAudience;
025import org.slf4j.Logger;
026import org.slf4j.LoggerFactory;
027
028/**
029 * A TThreadedSelectorServer.Args that reads hadoop configuration
030 */
031@InterfaceAudience.Private
032public class HThreadedSelectorServerArgs extends TThreadedSelectorServer.Args {
033  private static final Logger LOG = LoggerFactory.getLogger(TThreadedSelectorServer.class);
034
035  /**
036   * Number of selector threads for reading and writing socket
037   */
038  public static final String SELECTOR_THREADS_CONF_KEY = "hbase.thrift.selector.threads";
039
040  /**
041   * Number fo threads for processing the thrift calls
042   */
043  public static final String WORKER_THREADS_CONF_KEY = "hbase.thrift.worker.threads";
044
045  /**
046   * Time to wait for server to stop gracefully
047   */
048  public static final String STOP_TIMEOUT_CONF_KEY = "hbase.thrift.stop.timeout.seconds";
049
050  /**
051   * Maximum number of accepted elements per selector
052   */
053  public static final String ACCEPT_QUEUE_SIZE_PER_THREAD_CONF_KEY =
054    "hbase.thrift.accept.queue.size.per.selector";
055
056  /**
057   * The strategy for handling new accepted connections.
058   */
059  public static final String ACCEPT_POLICY_CONF_KEY = "hbase.thrift.accept.policy";
060
061  public HThreadedSelectorServerArgs(TNonblockingServerTransport transport, Configuration conf) {
062    super(transport);
063    readConf(conf);
064  }
065
066  private void readConf(Configuration conf) {
067    int selectorThreads = conf.getInt(SELECTOR_THREADS_CONF_KEY, getSelectorThreads());
068    int workerThreads = conf.getInt(WORKER_THREADS_CONF_KEY, getWorkerThreads());
069    int stopTimeoutVal = conf.getInt(STOP_TIMEOUT_CONF_KEY, getStopTimeoutVal());
070    int acceptQueueSizePerThread =
071      conf.getInt(ACCEPT_QUEUE_SIZE_PER_THREAD_CONF_KEY, getAcceptQueueSizePerThread());
072    AcceptPolicy acceptPolicy = AcceptPolicy.valueOf(
073      conf.get(ACCEPT_POLICY_CONF_KEY, getAcceptPolicy().toString()).toUpperCase(Locale.ROOT));
074
075    super.selectorThreads(selectorThreads).workerThreads(workerThreads)
076      .stopTimeoutVal(stopTimeoutVal).acceptQueueSizePerThread(acceptQueueSizePerThread)
077      .acceptPolicy(acceptPolicy);
078
079    LOG.info("Read configuration selectorThreads:" + selectorThreads + " workerThreads:"
080      + workerThreads + " stopTimeoutVal:" + stopTimeoutVal + "sec" + " acceptQueueSizePerThread:"
081      + acceptQueueSizePerThread + " acceptPolicy:" + acceptPolicy);
082  }
083}