Java Session类代码示例

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Does this request match the saved one (so that it must be the redirect
 * we signalled after successful authentication?
 *
 * @param request The request to be verified
 */
protected boolean matchRequest(Request request) {

  // Has a session been created?
  Session session = request.getSessionInternal(false);
  if (session == null)
      return (false);

  // Is there a saved request?
  SavedRequest sreq = (SavedRequest)
      session.getNote(Constants.FORM_REQUEST_NOTE);
  if (sreq == null)
      return (false);

  // Is there a saved principal?
  if (session.getNote(Constants.FORM_PRINCIPAL_NOTE) == null)
      return (false);

  // Does the request URI match?
  String requestURI = request.getRequestURI();
  if (requestURI == null)
      return (false);
  return (requestURI.equals(sreq.getRequestURI()));

}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Send Cluster Replication Request
 * @param request current request
 * @param manager session manager
 * @param cluster replication cluster
 */
protected void sendSessionReplicationMessage(Request request,
        ClusterManager manager, CatalinaCluster cluster) {
    Session session = request.getSessionInternal(false);
    if (session != null) {
        String uri = request.getDecodedRequestURI();
        // request without session change
        if (!isRequestWithoutSessionChange(uri)) {
            if (log.isDebugEnabled())
                log.debug(sm.getString("ReplicationValve.invoke.uri", uri));
            sendMessage(session,manager,cluster);
        } else
            if(doStatistics())
                nrOfFilterRequests++;
    }

}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * change session id and send to all cluster nodes
 * 
 * @param request current request
 * @param sessionId
 *            original session id
 * @param newSessionID
 *            new session id for node migration
 * @param catalinaSession
 *            current session with original session id
 */
protected void changeSessionID(Request request, String sessionId,
        String newSessionID, Session catalinaSession) {
    fireLifecycleEvent("Before session migration", catalinaSession);
    catalinaSession.setId(newSessionID, false);
    // FIXME: Why we remove change data from other running request?
    // setId also trigger resetDeltaRequest!!
    if (catalinaSession instanceof DeltaSession)
        ((DeltaSession) catalinaSession).resetDeltaRequest();
    changeRequestSessionID(request, sessionId, newSessionID);

    // now sending the change to all other clusternodes!
    sendSessionIDClusterBackup(request,sessionId, newSessionID);

    fireLifecycleEvent("After session migration", catalinaSession);
    if (log.isDebugEnabled()) {
        log.debug(sm.getString("jvmRoute.changeSession", sessionId,
                newSessionID));
    }   
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Send all changed cross context sessions to backups
 * 
 * @param containerCluster
 */
protected void sendCrossContextSession(CatalinaCluster containerCluster) {
	List<DeltaSession> sessions = crossContextSessions.get();
	if (sessions != null && sessions.size() > 0) {
		for (Iterator<DeltaSession> iter = sessions.iterator(); iter.hasNext();) {
			Session session = iter.next();
			if (log.isDebugEnabled())
				log.debug(sm.getString("ReplicationValve.crossContext.sendDelta",
						session.getManager().getContainer().getName()));
			sendMessage(session, (ClusterManager) session.getManager(), containerCluster);
			if (doStatistics()) {
				nrOfCrossContextSendRequests++;
			}
		}
	}
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Send all changed cross context sessions to backups
 * @param containerCluster
 */
protected void sendCrossContextSession(CatalinaCluster containerCluster) {
    List<DeltaSession> sessions = crossContextSessions.get();
    if(sessions != null && sessions.size() >0) {
        for(Iterator<DeltaSession> iter = sessions.iterator(); iter.hasNext() ;) {          
            Session session = iter.next();
            if(log.isDebugEnabled())
                log.debug(sm.getString("ReplicationValve.crossContext.sendDelta",  
                        session.getManager().getContainer().getName() ));
            sendMessage(session,(ClusterManager)session.getManager(),containerCluster);
            if(doStatistics()) {
                nrOfCrossContextSendRequests++;
            }
        }
    }
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * change session id and send to all cluster nodes
 * 
 * @param request
 *            current request
 * @param sessionId
 *            original session id
 * @param newSessionID
 *            new session id for node migration
 * @param catalinaSession
 *            current session with original session id
 */
protected void changeSessionID(Request request, String sessionId, String newSessionID, Session catalinaSession) {
	fireLifecycleEvent("Before session migration", catalinaSession);
	catalinaSession.setId(newSessionID, false);
	// FIXME: Why we remove change data from other running request?
	// setId also trigger resetDeltaRequest!!
	if (catalinaSession instanceof DeltaSession)
		((DeltaSession) catalinaSession).resetDeltaRequest();
	changeRequestSessionID(request, sessionId, newSessionID);

	// now sending the change to all other clusternodes!
	sendSessionIDClusterBackup(request, sessionId, newSessionID);

	fireLifecycleEvent("After session migration", catalinaSession);
	if (log.isDebugEnabled()) {
		log.debug(sm.getString("jvmRoute.changeSession", sessionId, newSessionID));
	}
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Save all currently active sessions in the appropriate persistence
 * mechanism, if any.  If persistence is not supported, this method
 * returns without doing anything.
 * <p>
 * Note that by default, this method is not called by the MiddleManager
 * class. In order to use it, a subclass must specifically call it,
 * for example in the stop() and/or processPersistenceChecks() methods.
 */
public void unload() {

    if (store == null)
        return;

    Session sessions[] = findSessions();
    int n = sessions.length;
    if (n == 0)
        return;

    if (log.isDebugEnabled())
        log.debug(sm.getString("persistentManager.unloading",
                         String.valueOf(n)));

    for (int i = 0; i < n; i++)
        try {
            swapOut(sessions[i]);
        } catch (IOException e) {
            ;   // This is logged in writeSession()
        }

}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Remove a single Session from a SingleSignOn.  Called when
 * a session is timed out and no longer active.
 *
 * @param ssoId Single sign on identifier from which to remove the session.
 * @param session the session to be removed.
 */
protected void removeSession(String ssoId, Session session) {

    if (containerLog.isDebugEnabled()) {
        containerLog.debug(sm.getString("singleSignOn.debug.removeSession", session, ssoId));
    }

    // Get a reference to the SingleSignOn
    SingleSignOnEntry entry = cache.get(ssoId);
    if (entry == null) {
        return;
    }

    // Remove the inactive session from SingleSignOnEntry
    entry.removeSession(session);

    // If there are not sessions left in the SingleSignOnEntry,
    // deregister the entry.
    if (entry.findSessions().size() == 0) {
        deregister(ssoId);
    }
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Save all currently active sessions in the appropriate persistence
 * mechanism, if any.  If persistence is not supported, this method
 * returns without doing anything.
 * <p>
 * Note that by default, this method is not called by the MiddleManager
 * class. In order to use it, a subclass must specifically call it,
 * for example in the stop() and/or processPersistenceChecks() methods.
 */
@Override
public void unload() {

    if (store == null)
        return;

    Session sessions[] = findSessions();
    int n = sessions.length;
    if (n == 0)
        return;

    if (log.isDebugEnabled())
        log.debug(sm.getString("persistentManager.unloading",
                         String.valueOf(n)));

    for (int i = 0; i < n; i++)
        try {
            swapOut(sessions[i]);
        } catch (IOException e) {
            // This is logged in writeSession()
        }

}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * {@inheritDoc}
 * <p>
 * Direct call to processExpires and processPersistenceChecks
 */
@Override
public void processExpires() {
    
    long timeNow = System.currentTimeMillis();
    Session sessions[] = findSessions();
    int expireHere = 0 ;
    if(log.isDebugEnabled())
         log.debug("Start expire sessions " + getName() + " at " + timeNow + " sessioncount " + sessions.length);
    for (int i = 0; i < sessions.length; i++) {
        if (!sessions[i].isValid()) {
            expiredSessions.incrementAndGet();
            expireHere++;
        }
    }
    processPersistenceChecks();
    if ((getStore() != null) && (getStore() instanceof StoreBase)) {
        ((StoreBase) getStore()).processExpires();
    }
    
    long timeEnd = System.currentTimeMillis();
    if(log.isDebugEnabled())
         log.debug("End expire sessions " + getName() + " processingTime " + (timeEnd - timeNow) + " expired sessions: " + expireHere);
    processingTime += (timeEnd - timeNow);
     
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Expire all find sessions.
 */
public void expireAllLocalSessions()
{
    long timeNow = System.currentTimeMillis();
    Session sessions[] = findSessions();
    int expireDirect  = 0 ;
    int expireIndirect = 0 ;
    
    if(log.isDebugEnabled()) log.debug("Start expire all sessions " + getName() + " at " + timeNow + " sessioncount " + sessions.length);
    for (int i = 0; i < sessions.length; i++) {
        if (sessions[i] instanceof DeltaSession) {
            DeltaSession session = (DeltaSession) sessions[i];
            if (session.isPrimarySession()) {
                if (session.isValid()) {
                    session.expire();
                    expireDirect++;
                } else {
                    expireIndirect++;
                }//end if
            }//end if
        }//end if
    }//for
    long timeEnd = System.currentTimeMillis();
    if(log.isDebugEnabled()) log.debug("End expire sessions " + getName() + " expire processingTime " + (timeEnd - timeNow) + " expired direct sessions: " + expireDirect + " expired direct sessions: " + expireIndirect);
  
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
/**
 * Stop this component and implement the requirements of
 * {@link org.apache.catalina.util.LifecycleBase#stopInternal()}.
 *
 * This will disconnect the cluster communication channel and stop the
 * listener thread.
 *
 * @exception LifecycleException
 *                if this component detects a fatal error that prevents this
 *                component from being used
 */
@Override
protected synchronized void stopInternal() throws LifecycleException {

	if (log.isDebugEnabled())
		log.debug(sm.getString("backupManager.stopped", getName()));

	setState(LifecycleState.STOPPING);

	if (sessions instanceof LazyReplicatedMap) {
		LazyReplicatedMap<String, Session> map = (LazyReplicatedMap<String, Session>) sessions;
		map.breakdown();
	}

	super.stopInternal();
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
@Override
public void remove(Session session, boolean update) {
    // If the session has expired - as opposed to just being removed from
    // the manager because it is being persisted - update the expired stats
    if (update) {
        long timeNow = System.currentTimeMillis();
        int timeAlive =
            (int) (timeNow - session.getCreationTimeInternal())/1000;
        updateSessionMaxAliveTime(timeAlive);
        expiredSessions.incrementAndGet();
        SessionTiming timing = new SessionTiming(timeNow, timeAlive);
        synchronized (sessionExpirationTiming) {
            sessionExpirationTiming.add(timing);
            sessionExpirationTiming.poll();
        }
    }

    if (session.getIdInternal() != null) {
        sessions.remove(session.getIdInternal());
    }
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
@Override
public void sessionEvent(SessionEvent event) {
	if (!Session.SESSION_DESTROYED_EVENT.equals(event.getType())) {
		return;
	}

	Session session = event.getSession();
	Manager manager = session.getManager();
	if (manager == null) {
		return;
	}
	Context context = (Context) manager.getContainer();
	Authenticator authenticator = context.getAuthenticator();
	if (!(authenticator instanceof AuthenticatorBase)) {
		return;
	}
	SingleSignOn sso = ((AuthenticatorBase) authenticator).sso;
	if (sso == null) {
		return;
	}
	sso.sessionDestroyed(ssoId, session);
}
 

import org.apache.catalina.Session; //导入依赖的package包/类
@Override
public void sessionEvent(SessionEvent event) {
    if (!Session.SESSION_DESTROYED_EVENT.equals(event.getType())) {
        return;
    }

    Session session = event.getSession();
    Manager manager = session.getManager();
    if (manager == null) {
        return;
    }
    Context context = (Context) manager.getContainer();
    Authenticator authenticator = context.getAuthenticator();
    if (!(authenticator instanceof AuthenticatorBase)) {
        return;
    }
    SingleSignOn sso = ((AuthenticatorBase) authenticator).sso;
    if (sso == null) {
        return;
    }
    sso.sessionDestroyed(ssoId, session);
}