org.eclipse.jetty.server.session.AbstractSessionManager Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.server.session;
import static java.lang.Math.round;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import java.util.EventListener;
import java.util.HashSet;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;
import javax.servlet.ServletRequest;
import javax.servlet.SessionCookieConfig;
import javax.servlet.SessionTrackingMode;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionContext;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import org.eclipse.jetty.http.HttpCookie;
import org.eclipse.jetty.server.AbstractConnector;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.SessionIdManager;
import org.eclipse.jetty.server.SessionManager;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.util.component.AbstractLifeCycle;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.statistic.CounterStatistic;
import org.eclipse.jetty.util.statistic.SampleStatistic;
/* ------------------------------------------------------------ */
/**
* An Abstract implementation of SessionManager. The partial implementation of
* SessionManager interface provides the majority of the handling required to
* implement a SessionManager. Concrete implementations of SessionManager based
* on AbstractSessionManager need only implement the newSession method to return
* a specialised version of the Session inner class that provides an attribute
* Map.
*
*/
@SuppressWarnings("deprecation")
public abstract class AbstractSessionManager extends AbstractLifeCycle implements SessionManager
{
final static Logger __log = SessionHandler.LOG;
public Set __defaultSessionTrackingModes =
Collections.unmodifiableSet(
new HashSet(
Arrays.asList(new SessionTrackingMode[]{SessionTrackingMode.COOKIE,SessionTrackingMode.URL})));
public final static String SESSION_KNOWN_ONLY_TO_AUTHENTICATED="org.eclipse.jetty.security.sessionKnownOnlytoAuthenticated";
/* ------------------------------------------------------------ */
public final static int __distantFuture=60*60*24*7*52*20;
static final HttpSessionContext __nullSessionContext=new HttpSessionContext()
{
public HttpSession getSession(String sessionId)
{
return null;
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public Enumeration getIds()
{
return Collections.enumeration(Collections.EMPTY_LIST);
}
};
private boolean _usingCookies=true;
/* ------------------------------------------------------------ */
// Setting of max inactive interval for new sessions
// -1 means no timeout
protected int _dftMaxIdleSecs=-1;
protected SessionHandler _sessionHandler;
protected boolean _httpOnly=false;
protected SessionIdManager _sessionIdManager;
protected boolean _secureCookies=false;
protected boolean _secureRequestOnly=true;
protected final List _sessionAttributeListeners = new CopyOnWriteArrayList();
protected final List _sessionListeners= new CopyOnWriteArrayList();
protected ClassLoader _loader;
protected ContextHandler.Context _context;
protected String _sessionCookie=__DefaultSessionCookie;
protected String _sessionIdPathParameterName = __DefaultSessionIdPathParameterName;
protected String _sessionIdPathParameterNamePrefix =";"+ _sessionIdPathParameterName +"=";
protected String _sessionDomain;
protected String _sessionPath;
protected int _maxCookieAge=-1;
protected int _refreshCookieAge;
protected boolean _nodeIdInSessionId;
protected boolean _checkingRemoteSessionIdEncoding;
protected String _sessionComment;
public Set _sessionTrackingModes;
private boolean _usingURLs;
protected final CounterStatistic _sessionsStats = new CounterStatistic();
protected final SampleStatistic _sessionTimeStats = new SampleStatistic();
/* ------------------------------------------------------------ */
public static HttpSession renewSession (HttpServletRequest request, HttpSession httpSession, boolean authenticated)
{
Map attributes = new HashMap();
for (Enumeration e=httpSession.getAttributeNames();e.hasMoreElements();)
{
String name=e.nextElement();
attributes.put(name,httpSession.getAttribute(name));
httpSession.removeAttribute(name);
}
httpSession.invalidate();
httpSession = request.getSession(true);
if (authenticated)
httpSession.setAttribute(SESSION_KNOWN_ONLY_TO_AUTHENTICATED, Boolean.TRUE);
for (Map.Entry entry: attributes.entrySet())
httpSession.setAttribute(entry.getKey(),entry.getValue());
return httpSession;
}
/* ------------------------------------------------------------ */
public AbstractSessionManager()
{
setSessionTrackingModes(__defaultSessionTrackingModes);
}
/* ------------------------------------------------------------ */
public ContextHandler.Context getContext()
{
return _context;
}
/* ------------------------------------------------------------ */
public ContextHandler getContextHandler()
{
return _context.getContextHandler();
}
public String getSessionPath()
{
return _sessionPath;
}
public int getMaxCookieAge()
{
return _maxCookieAge;
}
/* ------------------------------------------------------------ */
public HttpCookie access(HttpSession session,boolean secure)
{
long now=System.currentTimeMillis();
AbstractSession s = ((SessionIf)session).getSession();
if (s.access(now))
{
// Do we need to refresh the cookie?
if (isUsingCookies() &&
(s.isIdChanged() ||
(getSessionCookieConfig().getMaxAge()>0 && getRefreshCookieAge()>0 && ((now-s.getCookieSetTime())/1000>getRefreshCookieAge()))
)
)
{
HttpCookie cookie=getSessionCookie(session,_context==null?"/":(_context.getContextPath()),secure);
s.cookieSet();
s.setIdChanged(false);
return cookie;
}
}
return null;
}
/* ------------------------------------------------------------ */
public void addEventListener(EventListener listener)
{
if (listener instanceof HttpSessionAttributeListener)
_sessionAttributeListeners.add((HttpSessionAttributeListener)listener);
if (listener instanceof HttpSessionListener)
_sessionListeners.add((HttpSessionListener)listener);
}
/* ------------------------------------------------------------ */
public void clearEventListeners()
{
_sessionAttributeListeners.clear();
_sessionListeners.clear();
}
/* ------------------------------------------------------------ */
public void complete(HttpSession session)
{
AbstractSession s = ((SessionIf)session).getSession();
s.complete();
}
/* ------------------------------------------------------------ */
@Override
public void doStart() throws Exception
{
_context=ContextHandler.getCurrentContext();
_loader=Thread.currentThread().getContextClassLoader();
if (_sessionIdManager==null)
{
final Server server=getSessionHandler().getServer();
synchronized (server)
{
_sessionIdManager=server.getSessionIdManager();
if (_sessionIdManager==null)
{
_sessionIdManager=new HashSessionIdManager();
server.setSessionIdManager(_sessionIdManager);
}
}
}
if (!_sessionIdManager.isStarted())
_sessionIdManager.start();
// Look for a session cookie name
if (_context!=null)
{
String tmp=_context.getInitParameter(SessionManager.__SessionCookieProperty);
if (tmp!=null)
_sessionCookie=tmp;
tmp=_context.getInitParameter(SessionManager.__SessionIdPathParameterNameProperty);
if (tmp!=null)
setSessionIdPathParameterName(tmp);
// set up the max session cookie age if it isn't already
if (_maxCookieAge==-1)
{
tmp=_context.getInitParameter(SessionManager.__MaxAgeProperty);
if (tmp!=null)
_maxCookieAge=Integer.parseInt(tmp.trim());
}
// set up the session domain if it isn't already
if (_sessionDomain==null)
_sessionDomain=_context.getInitParameter(SessionManager.__SessionDomainProperty);
// set up the sessionPath if it isn't already
if (_sessionPath==null)
_sessionPath=_context.getInitParameter(SessionManager.__SessionPathProperty);
tmp=_context.getInitParameter(SessionManager.__CheckRemoteSessionEncoding);
if (tmp!=null)
_checkingRemoteSessionIdEncoding=Boolean.parseBoolean(tmp);
}
super.doStart();
}
/* ------------------------------------------------------------ */
@Override
public void doStop() throws Exception
{
super.doStop();
invalidateSessions();
_loader=null;
}
/* ------------------------------------------------------------ */
/**
* @return Returns the httpOnly.
*/
public boolean getHttpOnly()
{
return _httpOnly;
}
/* ------------------------------------------------------------ */
public HttpSession getHttpSession(String nodeId)
{
String cluster_id = getSessionIdManager().getClusterId(nodeId);
AbstractSession session = getSession(cluster_id);
if (session!=null && !session.getNodeId().equals(nodeId))
session.setIdChanged(true);
return session;
}
/* ------------------------------------------------------------ */
/**
* @return Returns the metaManager used for cross context session management
* @deprecated Use {@link #getSessionIdManager()}
*/
public SessionIdManager getIdManager()
{
return getSessionIdManager();
}
/* ------------------------------------------------------------ */
/**
* @return Returns the SessionIdManager used for cross context session management
*/
public SessionIdManager getSessionIdManager()
{
return _sessionIdManager;
}
/* ------------------------------------------------------------ */
/**
* @return seconds
*/
@Override
public int getMaxInactiveInterval()
{
return _dftMaxIdleSecs;
}
/* ------------------------------------------------------------ */
/**
* @see #getSessionsMax()
*/
@Deprecated
public int getMaxSessions()
{
return getSessionsMax();
}
/* ------------------------------------------------------------ */
/**
* @return maximum number of sessions
*/
public int getSessionsMax()
{
return (int)_sessionsStats.getMax();
}
/* ------------------------------------------------------------ */
/**
* @return total number of sessions
*/
public int getSessionsTotal()
{
return (int)_sessionsStats.getTotal();
}
/* ------------------------------------------------------------ */
/**
* @deprecated use {@link #getSessionIdManager()}
*/
@Deprecated
public SessionIdManager getMetaManager()
{
return getSessionIdManager();
}
/* ------------------------------------------------------------ */
/**
* @deprecated always returns 0. no replacement available.
*/
@Deprecated
public int getMinSessions()
{
return 0;
}
/* ------------------------------------------------------------ */
public int getRefreshCookieAge()
{
return _refreshCookieAge;
}
/* ------------------------------------------------------------ */
/**
* @return same as SessionCookieConfig.getSecure(). If true, session
* cookies are ALWAYS marked as secure. If false, a session cookie is
* ONLY marked as secure if _secureRequestOnly == true and it is a HTTPS request.
*/
public boolean getSecureCookies()
{
return _secureCookies;
}
/* ------------------------------------------------------------ */
/**
* @return true if session cookie is to be marked as secure only on HTTPS requests
*/
public boolean isSecureRequestOnly()
{
return _secureRequestOnly;
}
/* ------------------------------------------------------------ */
/**
* @return if true, session cookie will be marked as secure only iff
* HTTPS request. Can be overridden by setting SessionCookieConfig.setSecure(true),
* in which case the session cookie will be marked as secure on both HTTPS and HTTP.
*/
public void setSecureRequestOnly(boolean secureRequestOnly)
{
_secureRequestOnly = secureRequestOnly;
}
/* ------------------------------------------------------------ */
public String getSessionCookie()
{
return _sessionCookie;
}
/* ------------------------------------------------------------ */
/**
* A sessioncookie is marked as secure IFF any of the following conditions are true:
*
* - SessionCookieConfig.setSecure == true
* - SessionCookieConfig.setSecure == false && _secureRequestOnly==true && request is HTTPS
*
* According to SessionCookieConfig javadoc, case 1 can be used when:
* "... even though the request that initiated the session came over HTTP,
* is to support a topology where the web container is front-ended by an
* SSL offloading load balancer. In this case, the traffic between the client
* and the load balancer will be over HTTPS, whereas the traffic between the
* load balancer and the web container will be over HTTP."
*
* For case 2, you can use _secureRequestOnly to determine if you want the
* Servlet Spec 3.0 default behaviour when SessionCookieConfig.setSecure==false,
* which is:
* "they shall be marked as secure only if the request that initiated the
* corresponding session was also secure"
*
* The default for _secureRequestOnly is true, which gives the above behaviour. If
* you set it to false, then a session cookie is NEVER marked as secure, even if
* the initiating request was secure.
*
* @see org.eclipse.jetty.server.SessionManager#getSessionCookie(javax.servlet.http.HttpSession, java.lang.String, boolean)
*/
public HttpCookie getSessionCookie(HttpSession session, String contextPath, boolean requestIsSecure)
{
if (isUsingCookies())
{
String sessionPath = (_sessionPath==null) ? contextPath : _sessionPath;
sessionPath = (sessionPath==null||sessionPath.length()==0) ? "/" : sessionPath;
String id = getNodeId(session);
HttpCookie cookie = null;
if (_sessionComment == null)
{
cookie = new HttpCookie(
_sessionCookie,
id,
_sessionDomain,
sessionPath,
_cookieConfig.getMaxAge(),
_cookieConfig.isHttpOnly(),
_cookieConfig.isSecure() || (isSecureRequestOnly() && requestIsSecure));
}
else
{
cookie = new HttpCookie(
_sessionCookie,
id,
_sessionDomain,
sessionPath,
_cookieConfig.getMaxAge(),
_cookieConfig.isHttpOnly(),
_cookieConfig.isSecure() || (isSecureRequestOnly() && requestIsSecure),
_sessionComment,
1);
}
return cookie;
}
return null;
}
public String getSessionDomain()
{
return _sessionDomain;
}
/* ------------------------------------------------------------ */
/**
* @return Returns the sessionHandler.
*/
public SessionHandler getSessionHandler()
{
return _sessionHandler;
}
/* ------------------------------------------------------------ */
/**
* @deprecated Need to review if it is needed.
*/
@SuppressWarnings("rawtypes")
public Map getSessionMap()
{
throw new UnsupportedOperationException();
}
/* ------------------------------------------------------------ */
public int getSessions()
{
return (int)_sessionsStats.getCurrent();
}
/* ------------------------------------------------------------ */
public String getSessionIdPathParameterName()
{
return _sessionIdPathParameterName;
}
/* ------------------------------------------------------------ */
public String getSessionIdPathParameterNamePrefix()
{
return _sessionIdPathParameterNamePrefix;
}
/* ------------------------------------------------------------ */
/**
* @return Returns the usingCookies.
*/
public boolean isUsingCookies()
{
return _usingCookies;
}
/* ------------------------------------------------------------ */
public boolean isValid(HttpSession session)
{
AbstractSession s = ((SessionIf)session).getSession();
return s.isValid();
}
/* ------------------------------------------------------------ */
public String getClusterId(HttpSession session)
{
AbstractSession s = ((SessionIf)session).getSession();
return s.getClusterId();
}
/* ------------------------------------------------------------ */
public String getNodeId(HttpSession session)
{
AbstractSession s = ((SessionIf)session).getSession();
return s.getNodeId();
}
/* ------------------------------------------------------------ */
/**
* Create a new HttpSession for a request
*/
public HttpSession newHttpSession(HttpServletRequest request)
{
AbstractSession session=newSession(request);
session.setMaxInactiveInterval(_dftMaxIdleSecs);
addSession(session,true);
return session;
}
/* ------------------------------------------------------------ */
public void removeEventListener(EventListener listener)
{
if (listener instanceof HttpSessionAttributeListener)
_sessionAttributeListeners.remove(listener);
if (listener instanceof HttpSessionListener)
_sessionListeners.remove(listener);
}
/* ------------------------------------------------------------ */
/**
* @see #statsReset()
*/
@Deprecated
public void resetStats()
{
statsReset();
}
/* ------------------------------------------------------------ */
/**
* Reset statistics values
*/
public void statsReset()
{
_sessionsStats.reset(getSessions());
_sessionTimeStats.reset();
}
/* ------------------------------------------------------------ */
/**
* @param httpOnly
* The httpOnly to set.
*/
public void setHttpOnly(boolean httpOnly)
{
_httpOnly=httpOnly;
}
/* ------------------------------------------------------------ */
/**
* @param metaManager The metaManager used for cross context session management.
* @deprecated use {@link #setSessionIdManager(SessionIdManager)}
*/
public void setIdManager(SessionIdManager metaManager)
{
setSessionIdManager(metaManager);
}
/* ------------------------------------------------------------ */
/**
* @param metaManager The metaManager used for cross context session management.
*/
public void setSessionIdManager(SessionIdManager metaManager)
{
_sessionIdManager=metaManager;
}
/* ------------------------------------------------------------ */
/**
* @param seconds
*/
public void setMaxInactiveInterval(int seconds)
{
_dftMaxIdleSecs=seconds;
}
/* ------------------------------------------------------------ */
public void setRefreshCookieAge(int ageInSeconds)
{
_refreshCookieAge=ageInSeconds;
}
public void setSessionCookie(String cookieName)
{
_sessionCookie=cookieName;
}
/* ------------------------------------------------------------ */
/**
* @param sessionHandler
* The sessionHandler to set.
*/
public void setSessionHandler(SessionHandler sessionHandler)
{
_sessionHandler=sessionHandler;
}
/* ------------------------------------------------------------ */
public void setSessionIdPathParameterName(String param)
{
_sessionIdPathParameterName =(param==null||"none".equals(param))?null:param;
_sessionIdPathParameterNamePrefix =(param==null||"none".equals(param))?null:(";"+ _sessionIdPathParameterName +"=");
}
/* ------------------------------------------------------------ */
/**
* @param usingCookies
* The usingCookies to set.
*/
public void setUsingCookies(boolean usingCookies)
{
_usingCookies=usingCookies;
}
protected abstract void addSession(AbstractSession session);
/* ------------------------------------------------------------ */
/**
* Add the session Registers the session with this manager and registers the
* session ID with the sessionIDManager;
*/
protected void addSession(AbstractSession session, boolean created)
{
synchronized (_sessionIdManager)
{
_sessionIdManager.addSession(session);
addSession(session);
}
if (created)
{
_sessionsStats.increment();
if (_sessionListeners!=null)
{
HttpSessionEvent event=new HttpSessionEvent(session);
for (HttpSessionListener listener : _sessionListeners)
listener.sessionCreated(event);
}
}
}
/* ------------------------------------------------------------ */
/**
* Get a known existing session
* @param idInCluster The session ID in the cluster, stripped of any worker name.
* @return A Session or null if none exists.
*/
public abstract AbstractSession getSession(String idInCluster);
protected abstract void invalidateSessions() throws Exception;
/* ------------------------------------------------------------ */
/**
* Create a new session instance
* @param request
* @return the new session
*/
protected abstract AbstractSession newSession(HttpServletRequest request);
/* ------------------------------------------------------------ */
/**
* @return true if the cluster node id (worker id) is returned as part of the session id by {@link HttpSession#getId()}. Default is false.
*/
public boolean isNodeIdInSessionId()
{
return _nodeIdInSessionId;
}
/* ------------------------------------------------------------ */
/**
* @param nodeIdInSessionId true if the cluster node id (worker id) will be returned as part of the session id by {@link HttpSession#getId()}. Default is false.
*/
public void setNodeIdInSessionId(boolean nodeIdInSessionId)
{
_nodeIdInSessionId=nodeIdInSessionId;
}
/* ------------------------------------------------------------ */
/** Remove session from manager
* @param session The session to remove
* @param invalidate True if {@link HttpSessionListener#sessionDestroyed(HttpSessionEvent)} and
* {@link SessionIdManager#invalidateAll(String)} should be called.
*/
public void removeSession(HttpSession session, boolean invalidate)
{
AbstractSession s = ((SessionIf)session).getSession();
removeSession(s,invalidate);
}
/* ------------------------------------------------------------ */
/** Remove session from manager
* @param session The session to remove
* @param invalidate True if {@link HttpSessionListener#sessionDestroyed(HttpSessionEvent)} and
* {@link SessionIdManager#invalidateAll(String)} should be called.
*/
public void removeSession(AbstractSession session, boolean invalidate)
{
// Remove session from context and global maps
boolean removed = removeSession(session.getClusterId());
if (removed)
{
_sessionsStats.decrement();
_sessionTimeStats.set(round((System.currentTimeMillis() - session.getCreationTime())/1000.0));
// Remove session from all context and global id maps
_sessionIdManager.removeSession(session);
if (invalidate)
_sessionIdManager.invalidateAll(session.getClusterId());
if (invalidate && _sessionListeners!=null)
{
HttpSessionEvent event=new HttpSessionEvent(session);
for (HttpSessionListener listener : _sessionListeners)
listener.sessionDestroyed(event);
}
}
}
/* ------------------------------------------------------------ */
protected abstract boolean removeSession(String idInCluster);
/* ------------------------------------------------------------ */
/**
* @return maximum amount of time session remained valid
*/
public long getSessionTimeMax()
{
return _sessionTimeStats.getMax();
}
/* ------------------------------------------------------------ */
public Set getDefaultSessionTrackingModes()
{
return __defaultSessionTrackingModes;
}
/* ------------------------------------------------------------ */
public Set getEffectiveSessionTrackingModes()
{
return Collections.unmodifiableSet(_sessionTrackingModes);
}
/* ------------------------------------------------------------ */
@Override
public void setSessionTrackingModes(Set sessionTrackingModes)
{
_sessionTrackingModes=new HashSet(sessionTrackingModes);
_usingCookies=_sessionTrackingModes.contains(SessionTrackingMode.COOKIE);
_usingURLs=_sessionTrackingModes.contains(SessionTrackingMode.URL);
}
/* ------------------------------------------------------------ */
@Override
public boolean isUsingURLs()
{
return _usingURLs;
}
/* ------------------------------------------------------------ */
public SessionCookieConfig getSessionCookieConfig()
{
return _cookieConfig;
}
/* ------------------------------------------------------------ */
private SessionCookieConfig _cookieConfig =
new SessionCookieConfig()
{
@Override
public String getComment()
{
return _sessionComment;
}
@Override
public String getDomain()
{
return _sessionDomain;
}
@Override
public int getMaxAge()
{
return _maxCookieAge;
}
@Override
public String getName()
{
return _sessionCookie;
}
@Override
public String getPath()
{
return _sessionPath;
}
@Override
public boolean isHttpOnly()
{
return _httpOnly;
}
@Override
public boolean isSecure()
{
return _secureCookies;
}
@Override
public void setComment(String comment)
{
_sessionComment = comment;
}
@Override
public void setDomain(String domain)
{
_sessionDomain=domain;
}
@Override
public void setHttpOnly(boolean httpOnly)
{
_httpOnly=httpOnly;
}
@Override
public void setMaxAge(int maxAge)
{
_maxCookieAge=maxAge;
}
@Override
public void setName(String name)
{
_sessionCookie=name;
}
@Override
public void setPath(String path)
{
_sessionPath=path;
}
@Override
public void setSecure(boolean secure)
{
_secureCookies=secure;
}
};
/* ------------------------------------------------------------ */
/**
* @return total amount of time all sessions remained valid
*/
public long getSessionTimeTotal()
{
return _sessionTimeStats.getTotal();
}
/* ------------------------------------------------------------ */
/**
* @return mean amount of time session remained valid
*/
public double getSessionTimeMean()
{
return _sessionTimeStats.getMean();
}
/* ------------------------------------------------------------ */
/**
* @return standard deviation of amount of time session remained valid
*/
public double getSessionTimeStdDev()
{
return _sessionTimeStats.getStdDev();
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.server.SessionManager#isCheckingRemoteSessionIdEncoding()
*/
public boolean isCheckingRemoteSessionIdEncoding()
{
return _checkingRemoteSessionIdEncoding;
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.server.SessionManager#setCheckingRemoteSessionIdEncoding(boolean)
*/
public void setCheckingRemoteSessionIdEncoding(boolean remote)
{
_checkingRemoteSessionIdEncoding=remote;
}
/* ------------------------------------------------------------ */
/* ------------------------------------------------------------ */
/* ------------------------------------------------------------ */
/**
* Interface that any session wrapper should implement so that
* SessionManager may access the Jetty session implementation.
*
*/
public interface SessionIf extends HttpSession
{
public AbstractSession getSession();
}
public void doSessionAttributeListeners(AbstractSession session, String name, Object old, Object value)
{
if (!_sessionAttributeListeners.isEmpty())
{
HttpSessionBindingEvent event=new HttpSessionBindingEvent(session,name,old==null?value:old);
for (HttpSessionAttributeListener l : _sessionAttributeListeners)
{
if (old==null)
l.attributeAdded(event);
else if (value==null)
l.attributeRemoved(event);
else
l.attributeReplaced(event);
}
}
}
}