Examples of org.apache.catalina.cluster.session.SimpleTcpReplicationManager

Package org.apache.catalina.cluster.session

Examples of org.apache.catalina.cluster.session.SimpleTcpReplicationManager

org.apache.catalina.cluster.session.SimpleTcpReplicationManager
ilip.net/tomcat/">Filip's Tomcat Page
Copyright: See apache license Company: www.filip.net @author Filip Hanik @author Bela Ban (modifications for synchronous replication) @version 1.0 for TC 4.0Description: The InMemoryReplicationManager is a session manager that replicated session information in memory. It uses JavaGroups as a communication protocol to ensure guaranteed and ordered message delivery. JavaGroups also provides a very flexible protocol stack to ensure that the replication can be used in any environment.

The InMemoryReplicationManager extends the StandardManager hence it allows for us to inherit all the basic session management features like expiration, session listeners etc

To communicate with other nodes in the cluster, the InMemoryReplicationManager sends out 7 different type of multicast messages all defined in the SessionMessage class.
When a session is replicated (not an attribute added/removed) the session is serialized into a byte array using the StandardSession.readObjectData, StandardSession.writeObjectData methods.

        {
            long start = System.currentTimeMillis();
            HttpRequest hrequest = (HttpRequest) request;
            HttpServletRequest hreq = (HttpServletRequest) hrequest.getRequest();
            HttpSession session = hreq.getSession(false);
            SimpleTcpReplicationManager manager = (SimpleTcpReplicationManager)request.getContext().getManager();
            SimpleTcpCluster cluster = (SimpleTcpCluster)getContainer().getCluster();
            if ( cluster == null ) {
                log("No cluster configured for this request.",2);
                return;
            }
            //first check for session invalidations
            String[] invalidIds=manager.getInvalidatedSessions();
            if ( invalidIds.length > 0 ) {
                for ( int i=0;i<invalidIds.length; i++ ) {
                    try {
                        SessionMessage imsg = manager.requestCompleted(
                            invalidIds[i]);
                        if (imsg != null)
                            cluster.send(imsg);
                    }catch ( Exception x ) {
                        log("Unable to send session invalid message over cluster.",x,2);
                    }
                }
            }
            
            String id = null;
            if ( session != null )
                id = session.getId();
            else
                return;


            if ( id == null )
                return;


            if ( (request.getContext().getManager()==null) ||
                 (!(request.getContext().getManager() instanceof SimpleTcpReplicationManager)))
                return;


            


            String uri = hrequest.getDecodedRequestURI();
            boolean filterfound = false;


            for ( int i=0; (i<reqFilters.length) && (!filterfound); i++ )
            {
                java.util.regex.Matcher matcher = reqFilters[i].matcher(uri);
                filterfound = matcher.matches();
            }//for
            if ( filterfound )
                return;


            if ( debug > 4 ) log("Invoking replication request on "+uri,4);
            
            SessionMessage msg = manager.requestCompleted(id);
            if ( msg == null ) return;


            
            cluster.send(msg);
            long stop = System.currentTimeMillis();

View Full Code Here


    // --------------------------------------------------------- Public Methods




    public synchronized Manager createManager(String name) {
        SimpleTcpReplicationManager manager = new SimpleTcpReplicationManager(name);
        manager.setCluster(this);
        manager.setDistributable(true);
        manager.setExpireSessionsOnShutdown(expireSessionsOnShutdown);
        manager.setPrintToScreen(printToScreen);
        manager.setUseDirtyFlag(useDirtyFlag);
        manager.setDebug(debug);
        allmanagers.put(name, manager);
        managers.put(name,manager);
        return manager;
    }

View Full Code Here

                //if so, wait until we are fully started up
                if ( name == null ) {
                    java.util.Iterator i = managers.keySet().iterator();
                    while ( i.hasNext() ) {
                        String key = (String)i.next();
                        SimpleTcpReplicationManager mgr = (SimpleTcpReplicationManager) managers.get(key);
                        if (mgr != null)
                            mgr.messageDataReceived(msg);
                        else
                            log.warn("Context manager doesn't exist:" + key);
                    }//while
                } else {
                    SimpleTcpReplicationManager mgr = (
                        SimpleTcpReplicationManager) managers.get(name);
                    if (mgr != null)
                        mgr.messageDataReceived(msg);
                    else
                        log.warn("Context manager doesn't exist:" + name);
                }//end if
            }  else
                log.warn("Received invalid message myobj="+myobj);

View Full Code Here

            }//for
            if ( filterfound )
                return;


            if ( debug > 4 ) log("Invoking replication request on "+uri,4);
            SimpleTcpReplicationManager manager = (SimpleTcpReplicationManager)request.getContext().getManager();
            SessionMessage msg = manager.requestCompleted(id);
            if ( msg == null ) return;


            SimpleTcpCluster cluster = (SimpleTcpCluster)getContainer().getCluster();
            if ( cluster == null ) {
                log("No cluster configured for this request.",2);

View Full Code Here


    // --------------------------------------------------------- Public Methods




    public synchronized Manager createManager(String name) {
        SimpleTcpReplicationManager manager = new SimpleTcpReplicationManager(name);
        manager.setCluster(this);
        manager.setExpireSessionsOnShutdown(expireSessionsOnShutdown);
        manager.setPrintToScreen(printToScreen);
        manager.setUseDirtyFlag(useDirtyFlag);
        manager.setDebug(debug);
        managers.put(name, manager);
        return manager;
    }

View Full Code Here

                //if so, wait until we are fully started up
                if ( name == null ) {
                    java.util.Iterator i = managers.keySet().iterator();
                    while ( i.hasNext() ) {
                        String key = (String)i.next();
                        SimpleTcpReplicationManager mgr = (SimpleTcpReplicationManager) managers.get(key);
                        if (mgr != null)
                            mgr.messageDataReceived(msg);
                        else
                            log.warn("Context manager doesn't exist:" + key);
                    }//while
                } else {
                    SimpleTcpReplicationManager mgr = (
                        SimpleTcpReplicationManager) managers.get(name);
                    if (mgr != null)
                        mgr.messageDataReceived(msg);
                    else
                        log.warn("Context manager doesn't exist:" + name);
                }//end if
            }  else
                log.warn("Received invalid message myobj="+myobj);

View Full Code Here

            }//for
            if ( filterfound )
                return;


            if ( debug > 4 ) log("Invoking replication request on "+uri,4);
            SimpleTcpReplicationManager manager = (SimpleTcpReplicationManager)request.getContext().getManager();
            SessionMessage msg = manager.requestCompleted(id);
            if ( msg == null ) return;


            
            cluster.send(msg);
            long stop = System.currentTimeMillis();

View Full Code Here


    // --------------------------------------------------------- Public Methods




    public synchronized Manager createManager(String name) {
        SimpleTcpReplicationManager manager = new SimpleTcpReplicationManager(name);
        manager.setCluster(null);
        manager.setDistributable(false);
        manager.setExpireSessionsOnShutdown(expireSessionsOnShutdown);
        manager.setPrintToScreen(printToScreen);
        manager.setUseDirtyFlag(useDirtyFlag);
        manager.setDebug(debug);
        allmanagers.put(name, manager);
        return manager;
    }

View Full Code Here

    }


    public void setDistributable(String contextName, boolean distributable)
    {
        log.info("Setting distributable for context:"+contextName+" to "+distributable);
        SimpleTcpReplicationManager manager = (SimpleTcpReplicationManager)allmanagers.get(contextName);
        manager.setDistributable(distributable);
        if (distributable) {
            manager.setCluster(this);
            manager.setDistributable(true);
            managers.put(contextName,manager);
        }
        
    }

View Full Code Here

                //if so, wait until we are fully started up
                if ( name == null ) {
                    java.util.Iterator i = managers.keySet().iterator();
                    while ( i.hasNext() ) {
                        String key = (String)i.next();
                        SimpleTcpReplicationManager mgr = (SimpleTcpReplicationManager) managers.get(key);
                        if (mgr != null)
                            mgr.messageDataReceived(msg);
                        else
                            log.warn("Context manager doesn't exist:" + key);
                    }//while
                } else {
                    SimpleTcpReplicationManager mgr = (
                        SimpleTcpReplicationManager) managers.get(name);
                    if (mgr != null)
                        mgr.messageDataReceived(msg);
                    else
                        log.warn("Context manager doesn't exist:" + name);
                }//end if
            }  else
                log.warn("Received invalid message myobj="+myobj);

View Full Code Here

0 1

TOP

Related Classes of org.apache.catalina.cluster.session.SimpleTcpReplicationManager

org.apache.catalina.cluster.Member

org.apache.catalina.cluster.SessionMessage

org.apache.catalina.cluster.tcp.ReplicationValve

org.apache.catalina.cluster.tcp.SimpleTcpCluster

org.apache.catalina.cluster.tcp.SocketSender

org.apache.catalina.Session

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.