snmptraphandler.java

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//
// This file is part of the OpenNMS(R) Application.
//
// OpenNMS(R) is Copyright (C) 2002-2003 The OpenNMS Group, Inc.  All rights reserved.
// OpenNMS(R) is a derivative work, containing both original code, included code and modified
// code that was published under the GNU General Public License. Copyrights for modified 
// and included code are below.
//
// OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
//
// Copyright (C) 1999-2001 Oculan Corp.  All rights reserved.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// For more information contact:
//      OpenNMS Licensing       <[e-mail]>
//      http://www.opennms.org/
//      http://www.opennms.com/
//
// Tab Size = 8
//
// SnmpTrapHandler.java,v 1.1.1.1 2001/11/11 17:27:22 ben Exp
//
//

package org.opennms.protocols.snmp;

import java.net.InetAddress;

/**
 * <P>
 * The SnmpTrapHandler interface is implemented by an object that wishs to
 * receive callbacks when a SNMP trap protocol data unit is received from an
 * agent.
 * </P>
 * 
 * @author <a href="http://www.opennms.org/">OpenNMS </a>
 * @author <a href="mailto:[e-mail]">Brian Weaver </a>
 * @version 1.1.1.1 2001/11/11 17:27:22
 * 
 */
public interface SnmpTrapHandler {
    /**
     * <P>
     * This method is defined to handle SNMPv2 traps that are received by the
     * session. The parameters allow teh handler to determine the host, port,
     * and community string of the received PDU
     * </P>
     * 
     * @param session
     *            The SNMP session
     * @param agent
     *            The remote sender
     * @param port
     *            The remote senders port
     * @param community
     *            The community string
     * @param pdu
     *            The SNMP pdu
     * 
     */
    void snmpReceivedTrap(SnmpTrapSession session, InetAddress agent, int port, SnmpOctetString community, SnmpPduPacket pdu);

    /**
     * <P>
     * This method is define to handle SNMPv1 traps that are received by the
     * session. The parameters allow the handler to determine the host, port,
     * and community string of the received PDU.
     * </P>
     * 
     * @param session
     *            The SNMP session
     * @param agent
     *            The Trap sender
     * @param port
     *            The port of the sender
     * @param community
     *            The community string
     * @param pdu
     *            The SNMP trap pdu
     * 
     */
    void snmpReceivedTrap(SnmpTrapSession session, InetAddress agent, int port, SnmpOctetString community, SnmpPduTrap pdu);

    /**
     * <P>
     * This method is invoked if an error occurs in the trap session. The error
     * code that represents the failure will be passed in the second parameter,
     * 'error'. The error codes can be found in the class SnmpTrapSession class.
     * </P>
     * 
     * <P>
     * If a particular PDU is part of the error condition it will be passed in
     * the third parameter, 'pdu'. The pdu will be of the type SnmpPduRequest or
     * SnmpPduTrap object. The handler should use the "instanceof" operator to
     * determine which type the object is. Also, the object may be null if the
     * error condition is not associated with a particular PDU.
     * </P>
     * 
     * @param session
     *            The SNMP Trap Session
     * @param error
     *            The error condition value.
     * @param ref
     *            The PDU reference, or potentially null. It may also be an
     *            exception.
     * 
     * 
     */
    void snmpTrapSessionError(SnmpTrapSession session, int error, Object ref);
}