/*
 * Copyright (c) 2011,2012 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 java.util.Date;

import org.opendaylight.controller.hosttracker.hostAware.HostNodeConnector;

/**
 * Represents an independent device on the network. A device consists of a set
 * of entities, and all the information known about a given device comes only
 * from merging all associated entities for that device.
 *
 * @author readams
 */
public interface IDevice {
    /**
     * Get the primary key for this device.
     *
     * @return the primary key
     */
    public Long getDeviceKey();

    /**
     * Get the MAC address of the device as a Long value.
     *
     * @return the MAC address for the device
     */
    public long getMACAddress();

    /**
     * Get the MAC address of the device as a String value.
     *
     * @return the MAC address for the device
     */
    public String getMACAddressString();

    /**
     * Get all unique VLAN IDs for the device. If the device has untagged
     * entities, then the value -1 will be returned.
     *
     * @return an array containing all unique VLAN IDs for the device.
     */
    public Short[] getVlanId();

    /**
     * Get all unique IPv4 addresses associated with the device.
     *
     * @return an array containing the unique IPv4 addresses for the device.
     */
    public Integer[] getIPv4Addresses();

    /**
     * Get all unique attachment points associated with the device. This will
     * not include any blocked attachment points.
     *
     * @return an array containing all unique attachment points for the device
     */
    public SwitchPort[] getAttachmentPoints();

    /**
     * Get all old attachment points associated with the device. this is used in
     * host movement scenario.
     *
     * @return an array containing all unique old attachment points for the
     *         device
     */
    public SwitchPort[] getOldAP();

    /**
     * Get all unique attachment points associated with the device.
     *
     * @param includeError
     *            whether to include blocked attachment points. Blocked
     *            attachment points should not be used for forwarding, but could
     *            be useful to show to a user
     * @return an array containing all unique attachment points for the device
     */
    public SwitchPort[] getAttachmentPoints(boolean includeError);

    /**
     * Returns all unique VLAN IDs for the device that were observed on the
     * given switch port
     *
     * @param swp
     *            the switch port to query
     * @return an array containing the unique VLAN IDs
     */
    public Short[] getSwitchPortVlanIds(SwitchPort swp);

    /**
     * Get the most recent timestamp for this device
     *
     * @return the last seen timestamp
     */
    public Date getLastSeen();

    /**
     * Get the entity class for the device.
     *
     * @return the entity class
     * @see IEntityClassifierService
     */
    public IEntityClass getEntityClass();

    public boolean isStaticHost();

    public void setStaticHost(boolean isStatic);

    public HostNodeConnector toHostNodeConnector();

}