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.processor; 018 019import org.apache.camel.Endpoint; 020import org.apache.camel.Producer; 021import org.apache.camel.impl.DeferProducer; 022 023/** 024 * Factory to create services such as {@link Producer}s 025 * and defer starting the created service, until {@link org.apache.camel.CamelContext} has been started. 026 */ 027public final class DeferServiceFactory { 028 029 private DeferServiceFactory() { 030 // It's a helper class 031 } 032 033 /** 034 * Creates the {@link Producer} which is deferred started until {@link org.apache.camel.CamelContext} is being started. 035 * <p/> 036 * When the producer is started, it re-lookup the endpoint to capture any changes such as the endpoint has been intercepted. 037 * This allows the producer to react and send messages to the updated endpoint. 038 * 039 * @param endpoint the endpoint 040 * @return the producer which will be deferred started until {@link org.apache.camel.CamelContext} has been started 041 * @throws Exception can be thrown if there is an error starting the producer 042 * @see org.apache.camel.impl.DeferProducer 043 */ 044 public static Producer createProducer(Endpoint endpoint) throws Exception { 045 Producer producer = new DeferProducer(endpoint); 046 endpoint.getCamelContext().deferStartService(producer, true); 047 return producer; 048 } 049 050}