/*
 * Copyright (c) 2011 Big Switch Networks, Inc.
 *
 * Licensed under the Eclipse Public License, Version 1.0 (the
 * "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 *
 *      http://www.eclipse.org/legal/epl-v10.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 *    Originally created by David Erickson, Stanford University
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the
 *    License. You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing,
 *    software distributed under the License is distributed on an "AS
 *    IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 *    express or implied. See the License for the specific language
 *    governing permissions and limitations under the License.
 */

package org.opendaylight.controller.hosttracker;

import org.opendaylight.controller.sal.utils.IListener;

/**
 * Implementors of this interface can receive updates from DeviceManager about
 * the state of devices under its control.
 *
 * @author David Erickson (daviderickson@cs.stanford.edu)
 */
public interface IDeviceListener extends IListener<String> {
    /**
     * Called when a new Device is found
     *
     * @param device
     *            the device that changed
     */
    public void deviceAdded(IDevice device);

    /**
     * Called when a Device is removed, this typically occurs when the port the
     * Device is attached to goes down, or the switch it is attached to is
     * removed.
     *
     * @param device
     *            the device that changed
     */
    public void deviceRemoved(IDevice device);

    /**
     * Called when a Device has moved to a new location on the network. Note
     * that either the switch or the port or both has changed.
     *
     * @param device
     *            the device that changed
     */
    public void deviceMoved(IDevice device);

    /**
     * Called when a network address has been added or remove from a device
     *
     * @param device
     *            the device that changed
     */
    public void deviceIPV4AddrChanged(IDevice device);

    /**
     * Called when a VLAN tag for the device has been added or removed
     *
     * @param device
     *            the device that changed
     */
    public void deviceVlanChanged(IDevice device);
}