001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.activemq.transport; 018 019import java.net.URI; 020 021import org.apache.activemq.ThreadPriorities; 022import org.apache.activemq.util.ServiceStopper; 023import org.slf4j.Logger; 024import org.slf4j.LoggerFactory; 025 026/** 027 * A useful base class for implementations of {@link TransportServer} which uses 028 * a background thread to accept new connections. 029 * 030 * 031 */ 032public abstract class TransportServerThreadSupport extends TransportServerSupport implements Runnable { 033 private static final Logger LOG = LoggerFactory.getLogger(TransportServerThreadSupport.class); 034 035 private boolean daemon = true; 036 private boolean joinOnStop = true; 037 private Thread runner; 038 // should be a multiple of 128k 039 private long stackSize; 040 041 public TransportServerThreadSupport() { 042 } 043 044 public TransportServerThreadSupport(URI location) { 045 super(location); 046 } 047 048 public boolean isDaemon() { 049 return daemon; 050 } 051 052 /** 053 * Sets whether the background read thread is a daemon thread or not 054 */ 055 public void setDaemon(boolean daemon) { 056 this.daemon = daemon; 057 } 058 059 public boolean isJoinOnStop() { 060 return joinOnStop; 061 } 062 063 /** 064 * Sets whether the background read thread is joined with (waited for) on a 065 * stop 066 */ 067 public void setJoinOnStop(boolean joinOnStop) { 068 this.joinOnStop = joinOnStop; 069 } 070 071 protected void doStart() throws Exception { 072 LOG.info("Listening for connections at: " + getConnectURI()); 073 runner = new Thread(null, this, "ActiveMQ Transport Server: " + toString(), stackSize); 074 runner.setDaemon(daemon); 075 runner.setPriority(ThreadPriorities.BROKER_MANAGEMENT); 076 runner.start(); 077 } 078 079 protected void doStop(ServiceStopper stopper) throws Exception { 080 if (runner != null && joinOnStop) { 081 runner.join(); 082 runner = null; 083 } 084 } 085 086 /** 087 * @return the stackSize 088 */ 089 public long getStackSize() { 090 return this.stackSize; 091 } 092 093 /** 094 * @param stackSize the stackSize to set 095 */ 096 public void setStackSize(long stackSize) { 097 this.stackSize = stackSize; 098 } 099}