bip 01/04/25 18:36:06
Added: catalina/src/share/org/apache/catalina/session
StoreBase.java
Log:
Moved common code from FileStore/JDBCStore into StoreBase. Extended
by the concrete Store implementations like FileStore.
Each Store now have the ability to implement their own processExpires()
and storeStart()/storeStop().
Revision Changes Path
1.1
jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/session/StoreBase.java
Index: StoreBase.java
===================================================================
/*
* StoreBase.java
* $Header:
/home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/session/StoreBase.java,v
1.1 2001/04/26 01:36:05 bip Exp $
* $Revision: 1.1 $
* $Date: 2001/04/26 01:36:05 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
package org.apache.catalina.session;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.IOException;
import org.apache.catalina.Container;
import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.Logger;
import org.apache.catalina.Manager;
import org.apache.catalina.Store;
import org.apache.catalina.util.LifecycleSupport;
import org.apache.catalina.util.StringManager;
/**
* Abstract implementation of the Store interface to
* support most of the functionality required by a Store.
*
* @author Bip Thelin
* @version $Revision: 1.1 $, $Date: 2001/04/26 01:36:05 $
*/
public abstract class StoreBase
implements Lifecycle, Runnable, Store {
// ----------------------------------------------------- Instance Variables
/**
* The descriptive information about this implementation.
*/
protected static String info = "StoreBase/1.0";
/**
* The interval (in seconds) between checks for expired sessions.
*/
protected int checkInterval = 60;
/**
* Name to register for the background thread.
*/
protected String threadName = "StoreBase";
/**
* Name to register for this Store, used for logging.
*/
protected static String storeName = "StoreBase";
/**
* The background thread.
*/
protected Thread thread = null;
/**
* The background thread completion semaphore.
*/
protected boolean threadDone = false;
/**
* The debugging detail level for this component.
*/
protected int debug = 0;
/**
* Has this component been started yet?
*/
protected boolean started = false;
/**
* The lifecycle event support for this component.
*/
protected LifecycleSupport lifecycle = new LifecycleSupport(this);
/**
* The property change support for this component.
*/
protected PropertyChangeSupport support = new PropertyChangeSupport(this);
/**
* The string manager for this package.
*/
protected StringManager sm = StringManager.getManager(Constants.Package);
/**
* The Manager with which this JDBCStore is associated.
*/
protected Manager manager;
// ------------------------------------------------------------- Properties
/**
* Return the info for this Store.
*/
public String getInfo() {
return(info);
}
/**
* Return the thread name for this Store.
*/
public String getThreadName() {
return(threadName);
}
/**
* Return the name for this Store, used for logging.
*/
public String getStoreName() {
return(storeName);
}
/**
* Set the debugging detail level for this Store.
*
* @param debug The new debugging detail level
*/
public void setDebug(int debug) {
this.debug = debug;
}
/**
* Return the debugging detail level for this Store.
*/
public int getDebug() {
return(this.debug);
}
/**
* Set the check interval (in seconds) for this Store.
*
* @param checkInterval The new check interval
*/
public void setCheckInterval(int checkInterval) {
int oldCheckInterval = this.checkInterval;
this.checkInterval = checkInterval;
support.firePropertyChange("checkInterval",
new Integer(oldCheckInterval),
new Integer(this.checkInterval));
}
/**
* Return the check interval (in seconds) for this Store.
*/
public int getCheckInterval() {
return(this.checkInterval);
}
/**
* Set the Manager with which this Store is associated.
*
* @param manager The newly associated Manager
*/
public void setManager(Manager manager) {
Manager oldManager = this.manager;
this.manager = manager;
support.firePropertyChange("manager", oldManager, this.manager);
}
/**
* Return the Manager with which the Store is associated.
*/
public Manager getManager() {
return(this.manager);
}
// --------------------------------------------------------- Public Methods
/**
* Add a lifecycle event listener to this component.
*
* @param listener The listener to add
*/
public void addLifecycleListener(LifecycleListener listener) {
lifecycle.addLifecycleListener(listener);
}
/**
* Remove a lifecycle event listener from this component.
*
* @param listener The listener to add
*/
public void removeLifecycleListener(LifecycleListener listener) {
lifecycle.removeLifecycleListener(listener);
}
/**
* Add a property change listener to this component.
*
* @param listener a value of type 'PropertyChangeListener'
*/
public void addPropertyChangeListener(PropertyChangeListener listener) {
support.addPropertyChangeListener(listener);
}
/**
* Remove a property change listener from this component.
*
* @param listener The listener to remove
*/
public void removePropertyChangeListener(PropertyChangeListener listener) {
support.removePropertyChangeListener(listener);
}
// --------------------------------------------------------- Protected Methods
/**
* Called by our background reaper thread to check if Sessions
* saved in our store are subject of being expired. If so expire
* the Session and remove it from the Store.
*
*/
protected void processExpires() {
long timeNow = System.currentTimeMillis();
String[] keys = null;
if(!started)
return;
try {
keys = keys();
} catch (IOException e) {
log (e.toString());
e.printStackTrace();
return;
}
for (int i = 0; i < keys.length; i++) {
try {
StandardSession session = (StandardSession) load(keys[i]);
if (!session.isValid())
continue;
int maxInactiveInterval = session.getMaxInactiveInterval();
if (maxInactiveInterval < 0)
continue;
int timeIdle = // Truncate, do not round up
(int) ((timeNow - session.getLastAccessedTime()) / 1000L);
if (timeIdle >= maxInactiveInterval) {
session.expire();
remove(session.getId());
}
} catch (IOException e) {
log (e.toString());
e.printStackTrace();
} catch (ClassNotFoundException e) {
log (e.toString());
e.printStackTrace();
}
}
}
/**
* Log a message on the Logger associated with our Container (if any).
*
* @param message Message to be logged
*/
protected void log(String message) {
Logger logger = null;
Container container = manager.getContainer();
if (container != null)
logger = container.getLogger();
if (logger != null) {
logger.log(getStoreName()+"[" + container.getName() + "]: "
+ message);
} else {
String containerName = null;
if (container != null)
containerName = container.getName();
System.out.println(getStoreName()+"[" + containerName
+ "]: " + message);
}
}
/**
* Called from <b>start()</b> and used for concrete Store
* implementations that need to add their own <b>start()</b> code.
*
*/
protected void storeStart() {
;
}
/**
* Called from <b>stop()</b> and used for concrete Store
* implementations that need to add their own <b>stop()</b> code.
*
*/
protected void storeStop() {
;
}
// --------------------------------------------------------- Thread Methods
/**
* The background thread that checks for session timeouts and shutdown.
*/
public void run() {
// Loop until the termination semaphore is set
while (!threadDone) {
threadSleep();
processExpires();
}
}
/**
* Prepare for the beginning of active use of the public methods of this
* component. This method should be called after <code>configure()</code>,
* and before any of the public methods of the component are utilized.
*
* @exception IllegalStateException if this component has already been
* started
* @exception LifecycleException if this component detects a fatal error
* that prevents this component from being used
*/
public void start() throws LifecycleException {
// Validate and update our current component state
if (started)
throw new LifecycleException
(sm.getString(getStoreName()+".alreadyStarted"));
lifecycle.fireLifecycleEvent(START_EVENT, null);
started = true;
// Start the background reaper thread
threadStart();
// Start the Store
storeStart();
}
/**
* Gracefully terminate the active use of the public methods of this
* component. This method should be the last one called on a given
* instance of this component.
*
* @exception IllegalStateException if this component has not been started
* @exception LifecycleException if this component detects a fatal error
* that needs to be reported
*/
public void stop() throws LifecycleException {
// Validate and update our current component state
if (!started)
throw new LifecycleException
(sm.getString(getStoreName()+".notStarted"));
lifecycle.fireLifecycleEvent(STOP_EVENT, null);
started = false;
// Stop the background reaper thread
threadStop();
// Stop the Store.
storeStop();
}
/**
* Start the background thread that will periodically check for
* session timeouts.
*/
protected void threadStart() {
if (thread != null)
return;
threadDone = false;
thread = new Thread(this, getThreadName());
thread.setDaemon(true);
thread.start();
}
/**
* Sleep for the duration specified by the <code>checkInterval</code>
* property.
*/
protected void threadSleep() {
try {
Thread.sleep(checkInterval * 1000L);
} catch (InterruptedException e) {
;
}
}
/**
* Stop the background thread that is periodically checking for
* session timeouts.
*/
protected void threadStop() {
if (thread == null)
return;
threadDone = true;
thread.interrupt();
try {
thread.join();
} catch (InterruptedException e) {
;
}
thread = null;
}
}
