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.spi;
018
019import java.io.InputStream;
020
021import org.apache.camel.CamelContext;
022import org.apache.camel.CamelContextAware;
023import org.apache.camel.Service;
024import org.apache.camel.StaticService;
025
026/**
027 * SPI strategy for reloading Camel routes in an existing running {@link org.apache.camel.CamelContext}
028 */
029public interface ReloadStrategy extends Service, StaticService, CamelContextAware {
030
031    /**
032     * A reload is triggered when a XML resource is changed which contains Camel routes.
033     *
034     * @param camelContext  the running CamelContext
035     * @param name          name of resource such as a file name (can be null)
036     * @param resource      the changed resource
037     */
038    void onReloadXml(CamelContext camelContext, String name, InputStream resource);
039
040    /**
041     * Number of reloads succeeded.
042     */
043    int getReloadCounter();
044
045    /**
046     * Number of reloads failed.
047     */
048    int getFailedCounter();
049
050    /**
051     * Reset the counters.
052     */
053    void resetCounters();
054}