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 */ 017 package org.apache.camel.processor.interceptor; 018 019 import java.util.List; 020 021 import org.apache.camel.CamelContext; 022 import org.apache.camel.Processor; 023 import org.apache.camel.impl.DefaultCamelContext; 024 import org.apache.camel.model.ProcessorType; 025 import org.apache.camel.spi.InterceptStrategy; 026 027 /** 028 * An interceptor strategy for delaying routes. 029 */ 030 public class Delayer implements InterceptStrategy { 031 032 private boolean enabled = true; 033 private long delay; 034 035 public Delayer() { 036 } 037 038 public Delayer(long delay) { 039 this.delay = delay; 040 } 041 042 /** 043 * A helper method to return the Delayer instance for a given {@link org.apache.camel.CamelContext} if one is enabled 044 * 045 * @param context the camel context the delayer is connected to 046 * @return the delayer or null if none can be found 047 */ 048 public static DelayInterceptor getDelayer(CamelContext context) { 049 if (context instanceof DefaultCamelContext) { 050 DefaultCamelContext defaultCamelContext = (DefaultCamelContext) context; 051 List<InterceptStrategy> list = defaultCamelContext.getInterceptStrategies(); 052 for (InterceptStrategy interceptStrategy : list) { 053 if (interceptStrategy instanceof DelayInterceptor) { 054 return (DelayInterceptor)interceptStrategy; 055 } 056 } 057 } 058 return null; 059 } 060 061 public Processor wrapProcessorInInterceptors(ProcessorType processorType, Processor target) 062 throws Exception { 063 DelayInterceptor delayer = new DelayInterceptor(processorType, target, this); 064 return delayer; 065 } 066 067 public boolean isEnabled() { 068 return enabled; 069 } 070 071 public void setEnabled(boolean enabled) { 072 this.enabled = enabled; 073 } 074 075 public long getDelay() { 076 return delay; 077 } 078 079 public void setDelay(long delay) { 080 this.delay = delay; 081 } 082 }