001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel;
018
019import org.apache.camel.support.service.ServiceSupport;
020
021/**
022 * Marker interface to indicate a custom component has custom implementation for suspending the {@link SuspendableService} service.
023 * <br/>
024 * This is needed to let Camel know if there is special code happening during a suspension.
025 * <p/>
026 * The {@link ServiceSupport} implementation that most Camel components / endpoints etc use
027 * as base class is a {@link SuspendableService} but the actual implementation may not have special logic for suspend.
028 * Therefore this marker interface is introduced to indicate when the implementation has special code for suspension.
029 * <p/>
030 * It is assumed that a service having a custom logic for suspension implements also a custom logic for resuming.
031 *
032 * @see SuspendableService
033 */
034public interface Suspendable {
035}