/*
 * 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.opencord.aaa.api;


import org.opencord.aaa.PacketCustomizer;

/**
 * Service API for interacting with the AAA application.
 */
public interface AaaService {

    /**
     * Adds the specified listener for authentication events.
     *
     * @param listener the listener
     */
    void addListener(AaaListener listener);

    /**
     * Removes the specified listener for authentication events.
     *
     * @param listener the listener
     */
    void removeListener(AaaListener listener);


    // TODO: need to provide method to report current status
    //    for each state machine: {ConnectPoint, StateMachine.currentState}


    /**
     * Registers a packet customizer with AAA, to be used to customize
     * packets issued to and from the RADIUS server.
     *
     * @param customizer the customizer to register
     */
    void registerPacketCustomizer(PacketCustomizer customizer);

    /**
     * Unregisters the given packet customizer from AAA.
     * <p>
     * Note: AAA will revert to a default customizer, that does no
     * customization of the packets.
     *
     * @param customizer the customizer to unregister
     */
    void unregisterPacketCustomizer(PacketCustomizer customizer);

}