/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright 2000-2009 Sun Microsystems, Inc. All rights reserved. 
 *
 * 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 mq/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 mq/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:
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 * 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. 
 */

/*
 * %W% %G%
 */ 

package com.sun.messaging.jmq.jmsserver.multibroker.raptor.handlers;

import java.io.*;
import java.util.Iterator;
import java.util.List;
import com.sun.messaging.jmq.util.*;
import com.sun.messaging.jmq.jmsserver.util.*;
import com.sun.messaging.jmq.io.*;
import com.sun.messaging.jmq.jmsserver.Globals;
import com.sun.messaging.jmq.jmsserver.core.*;
import com.sun.messaging.jmq.jmsserver.resources.BrokerResources;
import com.sun.messaging.jmq.jmsserver.multibroker.raptor.*;
import com.sun.messaging.jmq.jmsserver.multibroker.MessageBusCallback;

public class NewInterestHandler extends GPacketHandler {
    private static boolean DEBUG = false;

    public NewInterestHandler(RaptorProtocol p) {
        super(p);
    }

    public void handle(MessageBusCallback cb, BrokerAddress sender, GPacket pkt) {
        if (DEBUG)
            logger.log(logger.DEBUG, "NewInterestHandler");

        if (pkt.getType() == ProtocolGlobals.G_NEW_INTEREST) {
            handleNewInterest(cb, sender, pkt);
        }
        else if (pkt.getType() == ProtocolGlobals.G_NEW_INTEREST_REPLY) {
            handleNewInterestAck(sender, pkt);
        }
        else if (pkt.getType() == ProtocolGlobals.G_DURABLE_ATTACH) {
            handleAttachDurable(cb, sender, pkt);
        }
        else if (pkt.getType() == ProtocolGlobals.G_DURABLE_ATTACH_REPLY) {
            handleAttachDurableReply(sender, pkt);
        }
        else {
            logger.log(logger.WARNING, "MessageDataHandler " +
                "Internal error : Cannot handle this packet :" +
                pkt.toLongString());
        }
    }

    public boolean ignoreNewInterest(ClusterConsumerInfo ci, GPacket pkt) {
		ClusterConsumerInfo cci = ci;
        if (cci == null) {
		   cci = ClusterConsumerInfo.newInstance(pkt, c);
        }
        if (p.getConfigSyncComplete() == false && !cci.isConfigSyncResponse()) {
            // Do not accept normal interest updates before config sync is complete.
            if (DEBUG) {
            logger.log(logger.INFO,  "Ignore "+
            ProtocolGlobals.getPacketTypeDisplayString(pkt.getType())+", not ready yet");
            }
            return true;
        }
        return false;
    }

    public void handleNewInterest(MessageBusCallback cb, BrokerAddress sender, GPacket pkt) {
        if (DEBUG) {
            logger.log(logger.INFO, "handleNewInterest from : " + sender);
        }

        ClusterConsumerInfo cci = ClusterConsumerInfo.newInstance(pkt, c);
        if (ignoreNewInterest(cci, pkt)) {
            return;
        }

        int count = cci.getConsumerCount();
        if (DEBUG) {
            logger.log(logger.INFO, "handleNewInterest count : " + count);
        }

        try {
            Iterator itr = cci.getConsumers();
            while (itr.hasNext()) {
                Consumer cons = (Consumer)itr.next();

                // Make sure that the destination exists...
                DestinationUID duid = cons.getDestinationUID();

                if (duid.isWildcard()) {
                    //we don't need to do anything here
                    // the logic below autocreates the destination
                    // and we need to do that.
                } else {
                    //autocreate the destination if we need to
                int type = (duid.isQueue() ? DestType.DEST_TYPE_QUEUE : DestType.DEST_TYPE_TOPIC);
                Destination dest = Destination.getDestination(duid.getName(), type, true, true);
                }

                cb.interestCreated(cons);
                if (DEBUG) {
                logger.log(logger.INFO, "Added newInterest("+count+")"+cons+ " from "+sender);
                }
            }
        }
        catch (Exception e) { 
            logger.logStack(logger.DEBUG,"Exception processing packet ", e);
        }

        if (cci.needReply()) {
            GPacket gp = ClusterConsumerInfo.getReplyGPacket(
                                ProtocolGlobals.G_NEW_INTEREST_REPLY,
                                            ProtocolGlobals.G_SUCCESS);
            try {
                c.unicast(sender, gp);
            }
            catch (IOException e) {}
        }
    }

    private void handleNewInterestAck(BrokerAddress sender, GPacket pkt) {
        logger.log(logger.DEBUG,
"MessageBus: Received G_NEW_INTEREST_REPLY from {0} : STATUS = {1}",
            sender, ((Integer) pkt.getProp("S")));
    }

    public void handleAttachDurable(MessageBusCallback cb, BrokerAddress sender, GPacket pkt) {
        if (DEBUG) {
            logger.log(logger.INFO, "handleAttachDurable from : " + sender);
        }

        ClusterSubscriptionInfo csi = ClusterSubscriptionInfo.newInstance(pkt, c);
        try {
            String dname = csi.getDurableName();
            String cid = csi.getClientID();

            // if we receive a packet which does not support
            // shared subscriptions -> we are dealing with an
            // older (e.g. 3.5) broker .. so we should never
            // have a null durable name
            Boolean allowsNonDurable = csi.allowsNonDurable(); 

            boolean nonDurableOK = (allowsNonDurable == null
                         ? false : allowsNonDurable.booleanValue());

            // check if anything is bogus in the paclet
            if (cid == null || (!nonDurableOK  && dname == null)) {
                logger.log(logger.INFO,
                    "Internal Error in handleAttachDurable : " +
                    dname + ":" + cid);
                return;
            }

            Consumer cons = csi.getConsumer();

            Subscription sub = null;

            if (dname == null) { // non-durable shared subscription
                DestinationUID duid = cons.getDestinationUID();
                String selector = cons.getSelectorStr();
                sub = Subscription.findNonDurableSubscription(
                    cid, duid, selector);
            } else {
                sub = Subscription.findDurableSubscription(
                    cid, dname);
            }

            if (DEBUG) {
            logger.log(logger.INFO, 
            "handleAttachDurable:dname="+dname+", subscription="+sub+
            ", consumer="+cons+" from "+sender);
            }
            if (sub == null) {
                logger.log(logger.INFO,
                    "Internal Error in handleAttachDurable. " +
                    " Subscription not found : " + dname + ":" + cid);
                return;
            }

            try {
                sub.attachConsumer(cons);
                cb.interestCreated(cons);
            } catch (Exception ex) {
                if (ex instanceof ConsumerAlreadyAddedException) {
                logger.log(logger.INFO,
                    ex.getMessage()+" ("+ProtocolGlobals.getPacketTypeDisplayString(pkt.getType())+")"); 
                } else if (ex instanceof BrokerException && 
                    ((BrokerException)ex).getStatusCode() == Status.CONFLICT) {
                logger.log(logger.WARNING, Globals.getBrokerResources().getKString(
                    BrokerResources.W_CLUSTER_ATTACH_CONSUMER_FAIL, ex.getMessage()));
                } else {
                logger.log(logger.ERROR, Globals.getBrokerResources().getKString(
                    BrokerResources.W_CLUSTER_ATTACH_CONSUMER_FAIL, ex.getMessage()), ex);
                }
            }

        }
        catch (Exception e) {
            logger.logStack(logger.DEBUG,"Exception processing packet ", e);
        }

        if (csi.needReply()) {
            GPacket gp = ClusterSubscriptionInfo.getReplyGPacket(
                                         ProtocolGlobals.G_DURABLE_ATTACH_REPLY,
                                                       ProtocolGlobals.G_SUCCESS);
            try {
                c.unicast(sender, gp);
            }
            catch (IOException e) {}
        }
    }

    private void handleAttachDurableReply(BrokerAddress sender, GPacket pkt) {
        logger.log(logger.DEBUG,
"MessageBus: Received G_DURABLE_ATTACH_REPLY from {0} : STATUS = {1}",
            sender, ((Integer) pkt.getProp("S")));
    }
}


/*
 * EOF
 */
