org.apache.mina.core.session.ExpiringSessionRecycler Maven / Gradle / Ivy
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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.core.session;
import java.net.SocketAddress;
import org.apache.mina.util.ExpirationListener;
import org.apache.mina.util.ExpiringMap;
/**
* An {@link IoSessionRecycler} with sessions that time out on inactivity.
*
* @author Apache MINA Project
* @org.apache.xbean.XBean
*/
public class ExpiringSessionRecycler implements IoSessionRecycler {
/** A map used to store the session */
private ExpiringMap sessionMap;
/** A map used to keep a track of the expiration */
private ExpiringMap.Expirer mapExpirer;
/**
* Create a new ExpiringSessionRecycler instance
*/
public ExpiringSessionRecycler() {
this(ExpiringMap.DEFAULT_TIME_TO_LIVE);
}
/**
* Create a new ExpiringSessionRecycler instance
*
* @param timeToLive The delay after which the session is going to be recycled
*/
public ExpiringSessionRecycler(int timeToLive) {
this(timeToLive, ExpiringMap.DEFAULT_EXPIRATION_INTERVAL);
}
/**
* Create a new ExpiringSessionRecycler instance
*
* @param timeToLive The delay after which the session is going to be recycled
* @param expirationInterval The delay after which the expiration occurs
*/
public ExpiringSessionRecycler(int timeToLive, int expirationInterval) {
sessionMap = new ExpiringMap<>(timeToLive, expirationInterval);
mapExpirer = sessionMap.getExpirer();
sessionMap.addExpirationListener(new DefaultExpirationListener());
}
/**
* {@inheritDoc}
*/
@Override
public void put(IoSession session) {
mapExpirer.startExpiringIfNotStarted();
SocketAddress key = session.getRemoteAddress();
if (!sessionMap.containsKey(key)) {
sessionMap.put(key, session);
}
}
/**
* {@inheritDoc}
*/
@Override
public IoSession recycle(SocketAddress remoteAddress) {
return sessionMap.get(remoteAddress);
}
/**
* {@inheritDoc}
*/
@Override
public void remove(IoSession session) {
sessionMap.remove(session.getRemoteAddress());
}
/**
* Stop the thread from monitoring the map
*/
public void stopExpiring() {
mapExpirer.stopExpiring();
}
/**
* @return The session expiration time in second
*/
public int getExpirationInterval() {
return sessionMap.getExpirationInterval();
}
/**
* @return The session time-to-live in second
*/
public int getTimeToLive() {
return sessionMap.getTimeToLive();
}
/**
* Set the interval in which a session will live in the map before it is removed.
*
* @param expirationInterval The session expiration time in seconds
*/
public void setExpirationInterval(int expirationInterval) {
sessionMap.setExpirationInterval(expirationInterval);
}
/**
* Update the value for the time-to-live
*
* @param timeToLive The time-to-live (seconds)
*/
public void setTimeToLive(int timeToLive) {
sessionMap.setTimeToLive(timeToLive);
}
private class DefaultExpirationListener implements ExpirationListener {
@Override
public void expired(IoSession expiredSession) {
expiredSession.closeNow();
}
}
}