Examples of org.apache.catalina.cluster.Member

org.apache.catalina.cluster.Member
The Member interface, defines a member in the Cluster. A member is a Tomcat process that participates in session replication.
Each member can carry a set of properties, defined by the actual implementation.
For TCP replication has been targeted for the first release, the hostname and listen port of the member is defined as hardcoded stuff.
The Member interface together with MembershipListener, MembershipService are interfaces used to switch out the service used to establish membership in between the cluster nodes. @author Filip Hanik @version $Revision: 1.4 $, $Date: 2004/02/27 14:58:55 $


    public void send(SessionMessage msg, Member dest) {
        try
        {
            msg.setAddress(membershipService.getLocalMember());
            Member destination = dest;
            if ( (destination == null) && (msg.getEventType() == SessionMessage.EVT_GET_ALL_SESSIONS) ) {
                if (membershipService.getMembers().length > 0)
                    destination = membershipService.getMembers()[0];
            }
            msg.setTimestamp(System.currentTimeMillis());
            java.io.ByteArrayOutputStream outs = new java.io.ByteArrayOutputStream();
            java.io.ObjectOutputStream out = new java.io.ObjectOutputStream(outs);
            out.writeObject(msg);
            byte[] data = outs.toByteArray();
            if(destination != null) {
                  Member tcpdest = dest;
                  if ( (tcpdest != null) && (!membershipService.getLocalMember().equals(tcpdest)))  {
                       clusterSender.sendMessage(msg.getSessionID(), data, tcpdest);
                  }//end if
            }
            else {

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     * @see org.apache.catalina.cluster.CatalinaCluster#send(org.apache.catalina.cluster.ClusterMessage,
     *      org.apache.catalina.cluster.Member)
     * @see McastService#findMemberByName(String)
     */
    public void sendToMember(ClusterMessage msg, String dest) {
        Member member = getMembershipService().findMemberByName(dest);
        if (member != null) {
            send(msg, member);
        } else {
            log.error("sendToMember: member " + dest + " not found!");
        }

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                }
            }
        }
        if (!accepted && log.isDebugEnabled()) {
            if (notifyLifecycleListenerOnFailure) {
                Member dest = message.getAddress();
                // Notify our interested LifecycleListeners
                lifecycle.fireLifecycleEvent(RECEIVE_MESSAGE_FAILURE_EVENT,
                        new SendMessageData(message, dest, null));
            }
            log.debug("Message " + message.toString() + " from type "

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                log("Starting... no cluster associated with this context:"+getName(),1);
                return;
            }


            if (cluster.getMembers().length > 0) {
                Member mbr = cluster.getMembers()[0];
                SessionMessage msg =
                    new SessionMessage(this.getName(),
                                       SessionMessage.EVT_GET_ALL_SESSIONS,
                                       null,
                                       "GET-ALL");

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     * @see #findSessionMasterMember()
     */
    public synchronized void getAllClusterSessions() {
        if (cluster != null && cluster.getMembers().length > 0) {
            long beforeSendTime = System.currentTimeMillis();
            Member mbr = findSessionMasterMember();
            if(mbr == null) { // No domain member found
                 return;
            }
            SessionMessage msg = new SessionMessageImpl(this.getName(),
                    SessionMessage.EVT_GET_ALL_SESSIONS, null, "GET-ALL",

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    /**
     * Find the master of the session state
     * @return master member of sessions 
     */
    protected Member findSessionMasterMember() {
        Member mbr = null;
        Member mbrs[] = cluster.getMembers();
        String localMemberDomain = cluster.getMembershipService().getLocalMember().getDomain();
        if(isSendClusterDomainOnly()) {
            for (int i = 0; mbr == null && i < mbrs.length; i++) {
                Member member = mbrs[i];
                if(localMemberDomain.equals(member.getDomain()))
                    mbr = member ;
            }
        } else {
            if(mbrs.length != 0 )
                mbr = mbrs[0];

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    public void send(SessionMessage msg, Member dest) {
        try
        {
            msg.setAddress(localMember);
            Member destination = dest;
            if ( (destination == null) && (msg.getEventType() == SessionMessage.EVT_GET_ALL_SESSIONS) ) {
                if (service.getMembers().length > 0)
                    destination = service.getMembers()[0];
            }
            msg.setTimestamp(System.currentTimeMillis());
            java.io.ByteArrayOutputStream outs = new java.io.ByteArrayOutputStream();
            java.io.ObjectOutputStream out = new java.io.ObjectOutputStream(outs);
            out.writeObject(msg);
            byte[] data = outs.toByteArray();
            if(destination != null) {
                  Member tcpdest = dest;
                  if ( (tcpdest != null) && (!localMember.equals(tcpdest)))  {
                       mReplicationTransmitter.sendMessage(msg.getSessionID(),
                                                           data,
                                                           InetAddress.getByName(tcpdest.getHost()),
                                                           tcpdest.getPort());
                  }//end if
            }
            else {
                mReplicationTransmitter.sendMessage(msg.getSessionID(),data);
            }

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    public void memberAdded(Member member) {
        try  {
            log.info("Replication member added:" + member);
            Member mbr = member;
            mReplicationTransmitter.add(IDataSenderFactory.getIDataSender(replicationMode,mbr));
        } catch ( Exception x ) {
            log.error("Unable to connect to replication system.",x);
        }

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    {
        log.info("Received member disappeared:"+member);
        try
        {
            log.info("Replication member disappeared:" + member);
            Member mbr = member;
            mReplicationTransmitter.remove(InetAddress.getByName(mbr.getHost()),
                                 mbr.getPort());
        }
        catch ( Exception x )
        {
            log.error("Unable remove cluster node from replication system.",x);
        }

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     *      org.apache.catalina.cluster.Member)
     */
    public void send(ClusterMessage msg, Member dest) {
        try {
            msg.setAddress(membershipService.getLocalMember());
            Member destination = dest;


            if (msg instanceof SessionMessage) {
                SessionMessage smsg = (SessionMessage) msg;
                //if we request session state, send to the oldest of members
                if ((destination == null)
                        && (smsg.getEventType() == SessionMessage.EVT_GET_ALL_SESSIONS)
                        && (membershipService.getMembers().length > 0)) {
                    destination = membershipService.getMembers()[0];
                }
            }
            byte[] data = createMessageData(msg);
            if (destination != null) {
                Member tcpdest = dest;
                if ((tcpdest != null)
                        && (!membershipService.getLocalMember().equals(tcpdest))) {
                    clusterSender.sendMessage(msg.getUniqueId(), data, tcpdest);
                }
            } else {

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