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.io.IOException; 020 021import org.apache.activemq.command.WireFormatInfo; 022import org.apache.activemq.wireformat.WireFormat; 023import org.slf4j.Logger; 024import org.slf4j.LoggerFactory; 025 026/** 027 * Used to make sure that commands are arriving periodically from the peer of 028 * the transport. 029 */ 030public class InactivityMonitor extends AbstractInactivityMonitor { 031 032 private static final Logger LOG = LoggerFactory.getLogger(InactivityMonitor.class); 033 034 private WireFormatInfo localWireFormatInfo; 035 private WireFormatInfo remoteWireFormatInfo; 036 037 private boolean ignoreRemoteWireFormat = false; 038 private boolean ignoreAllWireFormatInfo = false; 039 040 public InactivityMonitor(Transport next, WireFormat wireFormat) { 041 super(next, wireFormat); 042 if (this.wireFormat == null) { 043 this.ignoreAllWireFormatInfo = true; 044 } 045 } 046 047 protected void processInboundWireFormatInfo(WireFormatInfo info) throws IOException { 048 IOException error = null; 049 remoteWireFormatInfo = info; 050 try { 051 startMonitorThreads(); 052 } catch (IOException e) { 053 error = e; 054 } 055 if (error != null) { 056 onException(error); 057 } 058 } 059 060 protected void processOutboundWireFormatInfo(WireFormatInfo info) throws IOException{ 061 localWireFormatInfo = info; 062 startMonitorThreads(); 063 } 064 065 @Override 066 protected synchronized void startMonitorThreads() throws IOException { 067 if (isMonitorStarted()) { 068 return; 069 } 070 071 long readCheckTime = getReadCheckTime(); 072 073 if (readCheckTime > 0) { 074 setWriteCheckTime(writeCheckValueFromReadCheck(readCheckTime)); 075 } 076 077 super.startMonitorThreads(); 078 } 079 080 private long writeCheckValueFromReadCheck(long readCheckTime) { 081 return readCheckTime>3 ? readCheckTime/3 : readCheckTime; 082 } 083 084 @Override 085 protected boolean configuredOk() throws IOException { 086 boolean configured = false; 087 if (ignoreAllWireFormatInfo) { 088 configured = true; 089 } else if (localWireFormatInfo != null && remoteWireFormatInfo != null) { 090 if (!ignoreRemoteWireFormat) { 091 if (LOG.isDebugEnabled()) { 092 LOG.debug("Using min of local: " + localWireFormatInfo + " and remote: " + remoteWireFormatInfo); 093 } 094 095 long readCheckTime = Math.min(localWireFormatInfo.getMaxInactivityDuration(), remoteWireFormatInfo.getMaxInactivityDuration()); 096 long writeCheckTime = writeCheckValueFromReadCheck(readCheckTime); 097 098 setReadCheckTime(readCheckTime); 099 setInitialDelayTime(Math.min(localWireFormatInfo.getMaxInactivityDurationInitalDelay(), remoteWireFormatInfo.getMaxInactivityDurationInitalDelay())); 100 setWriteCheckTime(writeCheckTime); 101 102 } else { 103 if (LOG.isDebugEnabled()) { 104 LOG.debug("Using local: " + localWireFormatInfo); 105 } 106 107 long readCheckTime = localWireFormatInfo.getMaxInactivityDuration(); 108 long writeCheckTime = writeCheckValueFromReadCheck(readCheckTime); 109 110 setReadCheckTime(readCheckTime); 111 setInitialDelayTime(localWireFormatInfo.getMaxInactivityDurationInitalDelay()); 112 setWriteCheckTime(writeCheckTime); 113 } 114 configured = true; 115 } 116 117 return configured; 118 } 119 120 public boolean isIgnoreAllWireFormatInfo() { 121 return ignoreAllWireFormatInfo; 122 } 123 124 public void setIgnoreAllWireFormatInfo(boolean ignoreAllWireFormatInfo) { 125 this.ignoreAllWireFormatInfo = ignoreAllWireFormatInfo; 126 } 127 128 public boolean isIgnoreRemoteWireFormat() { 129 return ignoreRemoteWireFormat; 130 } 131 132 public void setIgnoreRemoteWireFormat(boolean ignoreRemoteWireFormat) { 133 this.ignoreRemoteWireFormat = ignoreRemoteWireFormat; 134 } 135}