/*
 * Copyright (c) 2000, 2017 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

/*
 * @(#)PurgeDestinationHandler.java	1.32 07/12/07
 */

package com.sun.messaging.jmq.jmsserver.data.handlers.admin;

import java.util.Hashtable;
import com.sun.messaging.jmq.io.Packet;
import com.sun.messaging.jmq.jmsserver.cluster.api.ha.HAMonitorService;
import com.sun.messaging.jmq.jmsserver.service.imq.IMQConnection;
import com.sun.messaging.jmq.jmsserver.core.Destination;
import com.sun.messaging.jmq.util.lists.Filter;
import com.sun.messaging.jmq.io.*;
import com.sun.messaging.jmq.util.admin.MessageType;
import com.sun.messaging.jmq.util.log.Logger;
import com.sun.messaging.jmq.jmsserver.Globals;
import com.sun.messaging.jmq.jmsserver.util.BrokerException;
import com.sun.messaging.jmq.jmsserver.resources.BrokerResources;
import com.sun.messaging.jmq.util.DestType;
import com.sun.messaging.jmq.jmsserver.audit.api.MQAuditSession;

public class PurgeDestinationHandler extends AdminCmdHandler {

    private static boolean DEBUG = getDEBUG();

    private Filter deleteAll = new DeleteAllMessages();

    public PurgeDestinationHandler(AdminDataHandler parent) {
        super(parent);
    }

    /**
     * Handle the incomming administration message.
     *
     * @param con The Connection the message came in on.
     * @param cmd_msg The administration message
     * @param cmd_props The properties from the administration message
     */
    @Override
    public boolean handle(IMQConnection con, Packet cmd_msg, Hashtable cmd_props) {

        if (DEBUG) {
            logger.log(Logger.DEBUG, this.getClass().getName() + ": " + "Purging: " + cmd_props);
        }

        assert cmd_props != null;
        String destination = (String) cmd_props.get(MessageType.JMQ_DESTINATION);
        Integer destType = (Integer) cmd_props.get(MessageType.JMQ_DEST_TYPE);
        assert destination != null;
        assert destType != null;
        int status = Status.OK;
        String errMsg = null;

        HAMonitorService hamonitor = Globals.getHAMonitorService();
        if (hamonitor != null && hamonitor.inTakeover()) {
            status = Status.ERROR;
            errMsg = rb.getString(rb.E_CANNOT_PROCEED_TAKEOVER_IN_PROCESS);

            logger.log(Logger.ERROR, this.getClass().getName() + ": " + errMsg);
        } else {

            // FOR NOW .. we have just one criteria - ALL
            String criteria_str = Globals.getBrokerResources().getKString(BrokerResources.I_ALL_PURGE_CRITERIA);

//LKS
// dont use filter for now
//        Filter f = deleteAll;

            logger.log(Logger.INFO, BrokerResources.I_PURGING_DESTINATION, destination, criteria_str);

            try {
                // for now .. just delete all
                Destination[] ds = DL.getDestination(null, destination, DestType.isQueue(destType.intValue()));
                Destination d = null;
                for (int i = 0; i < ds.length; i++) {
                    d = ds[i];
                    if (d == null) {
                        continue;
                    }
                    // audit logging for purge destination
                    if (i == 0) {
                        Globals.getAuditSession().destinationOperation(con.getUserName(), con.remoteHostString(), MQAuditSession.PURGE_DESTINATION,
                                d.isQueue() ? MQAuditSession.QUEUE : MQAuditSession.TOPIC, d.getDestinationName());
                    }
                    d.purgeDestination();
                }
                if (d == null) {
                    errMsg = Globals.getBrokerResources().getKString(BrokerResources.E_NO_SUCH_DESTINATION, getDestinationType(destType.intValue()),
                            destination);
                    Exception e = new BrokerException(errMsg);
                    e.fillInStackTrace();
                    status = Status.ERROR;
                    logger.log(Logger.WARNING, BrokerResources.W_ADMIN_OPERATION_FAILED, e);
                }
            } catch (BrokerException ex) {
                status = Status.ERROR;
                errMsg = getMessageFromException(ex);
                logger.log(Logger.WARNING, BrokerResources.W_ADMIN_OPERATION_FAILED, ex);
            } catch (OutOfMemoryError err) {
                // throw memory error so it is handled by memory code
                throw err;
            } catch (Throwable ex) {
                status = Status.ERROR;
                errMsg = Globals.getBrokerResources().getString(BrokerResources.X_INTERNAL_EXCEPTION, ex);
                logger.logStack(Logger.WARNING, BrokerResources.W_ADMIN_OPERATION_FAILED, ex);
            }
        }

        // Send reply
        Packet reply = new Packet(con.useDirectBuffers());
        reply.setPacketType(PacketType.OBJECT_MESSAGE);

        setProperties(reply, MessageType.PURGE_DESTINATION_REPLY, status, errMsg);

        parent.sendReply(con, cmd_msg, reply);
        return true;
    }

}
