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 org.apache.camel.Endpoint;
020import org.apache.camel.Producer;
021
022/**
023 * Factory to create services such as {@link Producer}s
024 * and defer starting the created service, until {@link org.apache.camel.CamelContext} has been started.
025 */
026public interface DeferServiceFactory {
027
028    /**
029     * Creates the {@link Producer} which is deferred started until {@link org.apache.camel.CamelContext} is being started.
030     * <p/>
031     * When the producer is started, it re-lookup the endpoint to capture any changes such as the endpoint has been intercepted.
032     * This allows the producer to react and send messages to the updated endpoint.
033     *
034     * @param endpoint the endpoint
035     * @return the producer which will be deferred started until {@link org.apache.camel.CamelContext} has been started
036     * @throws Exception can be thrown if there is an error starting the producer
037     */
038    Producer createProducer(Endpoint endpoint) throws Exception;
039
040}