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/*
 * Copyright 2017-present Open Networking Foundation
 *
 * 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.onosproject.net.behaviour;

import org.onosproject.net.DeviceId;
import org.onosproject.net.device.DeviceDescription;
import org.onosproject.net.driver.HandlerBehaviour;

import java.util.Set;

/**
 * Handler behaviour capable of managing a set of forwarding plane devices.
 */
public interface DevicesDiscovery extends HandlerBehaviour {

    /**
     * Returns a set of proxied device ids.
     *
     * @return a set of deviceId
     */
    Set deviceIds();

    /**
     * Returns a device description appropriately annotated to support
     * downstream model extension via projections of the resulting device,
     * as in the following example.
     * This process permits to discovery the description of a proxied device by
     * leveraging on the device ids discovered
     * @see org.onosproject.net.behaviour.DevicesDiscovery#deviceDetails(DeviceId)
     *
     * @param deviceId the device Id of the device of interest
     * @return annotated device description
     */
    DeviceDescription deviceDetails(DeviceId deviceId);
}