/* * Copyright 2014 dc-square GmbH * * 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 com.hivemq.spi.callback.events; import com.hivemq.spi.callback.AsynchronousCallback; import com.hivemq.spi.message.UNSUBSCRIBE; import com.hivemq.spi.security.ClientData; /** * A callback which gets called when an UNSUBSCRIBE MQTT message arrives. * * @author Dominik Obermaier * @since 1.4 */ public interface OnUnsubscribeCallback extends AsynchronousCallback { /** * Gets called when an UNSUBSCRIBE MQTT message arrives * * @param message the {@link UNSUBSCRIBE} message * @param clientData information about the client */ void onUnsubscribe(UNSUBSCRIBE message, ClientData clientData); }