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.main; 018 019import org.apache.camel.CamelContext; 020 021/** 022 * A lifecycle listener to receive callbacks when the main is started and stopped. 023 */ 024public interface MainListener { 025 026 /** 027 * Callback before the CamelContext(s) is being created and started. 028 * 029 * @param main the main instance 030 */ 031 void beforeStart(MainSupport main); 032 033 /** 034 * Callback to configure <b>each</b> created CamelContext. 035 * <p/> 036 * Notice this callback will be invoked for <b>each</b> CamelContext and therefore can be invoked 037 * multiple times if there is 2 or more CamelContext's being created. 038 * 039 * @param context the created CamelContext 040 */ 041 void configure(CamelContext context); 042 043 /** 044 * Callback after the CamelContext(s) has been started. 045 * 046 * @param main the main instance 047 */ 048 void afterStart(MainSupport main); 049 050 /** 051 * Callback before the CamelContext(s) is being stopped. 052 * 053 * @param main the main instance 054 */ 055 void beforeStop(MainSupport main); 056 057 /** 058 * Callback after the CamelContext(s) has been stopped. 059 * 060 * @param main the main instance 061 */ 062 void afterStop(MainSupport main); 063}