/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* Portions Copyright Apache Software Foundation.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
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.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;
//HERCULES:added
import org.apache.catalina.Session;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
//HERCULES:end added
/**
* Abstract implementation of the Store interface to
* support most of the functionality required by a Store.
*
* @author Bip Thelin
* @version $Revision: 1.8.6.1 $, $Date: 2007/09/04 05:32:26 $
*/
public abstract class StoreBase
implements Lifecycle, Store {
// ----------------------------------------------------- Instance Variables
/**
* The descriptive information about this implementation.
*/
/* SJSAS
protected static String info = "StoreBase/1.0";
*/
// START SJSAS
// If this variable were static, it would need to be protected from
// manipulation by malicious code by making it final. However, this
// variable must not be final, because it is assigned a different value
// in some of the EE subclasses. Therefore, turning it into an instance
// variable.
protected String info = "StoreBase/1.0";
// END SJSAS
/**
* Name to register for this Store, used for logging.
*/
/* SJSAS
protected static String storeName = "StoreBase";
*/
// START SJSAS
// If this variable were static, it would need to be protected from
// manipulation by malicious code by making it final. However, this
// variable must not be final, because it is assigned a different value
// in some of the EE subclasses. Therefore, turning it into an instance
// variable.
protected String storeName = "StoreBase";
// END SJSAS
/**
* 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 static final 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 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 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);
}
/**
* Get the lifecycle listeners associated with this lifecycle. If this
* Lifecycle has no listeners registered, a zero-length array is returned.
*/
public LifecycleListener[] findLifecycleListeners() {
return lifecycle.findLifecycleListeners();
}
/**
* 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);
}
/**
* Serialize a session into an output stream.
*
* @param sess
* The session to be serialized
*
* @param oos
* The output stream the session should be written to
* Hercules: added method
*/
public void writeSession(Session sess, ObjectOutputStream oos)
throws IOException {
if ( sess == null ) {
return;
}
oos.writeObject(sess);
}
/**
* Create a session object from an input stream.
*
* @param manager
* The manager that will own this session
*
* @param ois
* The input stream containing the serialized session
*
* @return
* The resulting session object
* Hercules: added method
*/
public Session readSession(Manager manager, ObjectInputStream ois)
throws ClassNotFoundException, IOException {
StandardSession sess = StandardSession.deserialize(ois, manager);
sess.setManager(manager);
return sess;
}
/**
* public wrapper for processExpires()
* don't want to make processExpires() public
* called from manager background thread
*
* Hercules: added method
*/
public void doProcessExpires() {
this.processExpires();
}
/**
* no-op method - sub classes will
* implement to remove a session from the store
* cache
* Hercules: added method
*/
public void removeFromStoreCache(String id) {
//do nothing
}
// --------------------------------------------------------- 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.
*
*/
public 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 == null) {
continue;
}
if (session.isValid()) {
continue;
}
if ( ( (PersistentManagerBase) manager).isLoaded( keys[i] )) {
// recycle old backup session
session.recycle();
} else {
// expire swapped out session
session.expire();
}
remove(session.getIdInternal());
} 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);
}
}
/**
* Load and return the Session associated with the specified session
* identifier from this Store, without removing it. If there is no
* such stored Session, return <code>null</code>.
*
* @param id Session identifier of the session to load
* @param version The requested session version
*
* @exception ClassNotFoundException if a deserialization error occurs
* @exception IOException if an input/output error occurs
*/
public Session load(String id, String version)
throws ClassNotFoundException, IOException {
return load(id);
}
// --------------------------------------------------------- Thread Methods
/**
* 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 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;
}
/**
* 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 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;
}
}
|
