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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.mina.transport.vmpipe.support;
import org.apache.mina.common.IdleStatus;
import java.util.HashMap;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.Map;
/**
* This file is a patch to override MINA, because of the IdentityHashMap bug. Workaround to be supplied in MINA 1.0.7.
* This patched file will be removed once upgraded onto a newer MINA.
*
* Dectects idle sessions and fires <tt>sessionIdle</tt> events to them.
*
* @author The Apache Directory Project (mina-dev@directory.apache.org)
*/
public class VmPipeIdleStatusChecker
{
private static final VmPipeIdleStatusChecker INSTANCE = new VmPipeIdleStatusChecker();
public static VmPipeIdleStatusChecker getInstance()
{
return INSTANCE;
}
private final Map sessions = new HashMap(); // will use as a set
private final Worker worker = new Worker();
private VmPipeIdleStatusChecker()
{
worker.start();
}
public void addSession(VmPipeSessionImpl session)
{
synchronized (sessions)
{
sessions.put(session, session);
}
}
private class Worker extends Thread
{
private Worker()
{
super("VmPipeIdleStatusChecker");
setDaemon(true);
}
public void run()
{
for (;;)
{
try
{
Thread.sleep(1000);
}
catch (InterruptedException e)
{ }
long currentTime = System.currentTimeMillis();
synchronized (sessions)
{
Iterator it = sessions.keySet().iterator();
while (it.hasNext())
{
VmPipeSessionImpl session = (VmPipeSessionImpl) it.next();
if (!session.isConnected())
{
it.remove();
}
else
{
notifyIdleSession(session, currentTime);
}
}
}
}
}
}
private void notifyIdleSession(VmPipeSessionImpl session, long currentTime)
{
notifyIdleSession0(session, currentTime, session.getIdleTimeInMillis(IdleStatus.BOTH_IDLE), IdleStatus.BOTH_IDLE,
Math.max(session.getLastIoTime(), session.getLastIdleTime(IdleStatus.BOTH_IDLE)));
notifyIdleSession0(session, currentTime, session.getIdleTimeInMillis(IdleStatus.READER_IDLE), IdleStatus.READER_IDLE,
Math.max(session.getLastReadTime(), session.getLastIdleTime(IdleStatus.READER_IDLE)));
notifyIdleSession0(session, currentTime, session.getIdleTimeInMillis(IdleStatus.WRITER_IDLE), IdleStatus.WRITER_IDLE,
Math.max(session.getLastWriteTime(), session.getLastIdleTime(IdleStatus.WRITER_IDLE)));
}
private void notifyIdleSession0(VmPipeSessionImpl session, long currentTime, long idleTime, IdleStatus status,
long lastIoTime)
{
if ((idleTime > 0) && (lastIoTime != 0) && ((currentTime - lastIoTime) >= idleTime))
{
session.increaseIdleCount(status);
session.getFilterChain().fireSessionIdle(session, status);
}
}
}
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