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.model.ProcessorDefinition; 024 import org.apache.camel.spi.InterceptStrategy; 025 026 /** 027 * An interceptor strategy for delaying routes. 028 */ 029 public class Delayer implements InterceptStrategy { 030 031 private volatile boolean enabled = true; 032 private final long delay; 033 034 public Delayer(long delay) { 035 this.delay = delay; 036 } 037 038 /** 039 * A helper method to return the Delayer instance for a given {@link org.apache.camel.CamelContext} if one is enabled 040 * 041 * @param context the camel context the delayer is connected to 042 * @return the delayer or null if none can be found 043 */ 044 public static Delayer getDelayer(CamelContext context) { 045 List<InterceptStrategy> list = context.getInterceptStrategies(); 046 for (InterceptStrategy interceptStrategy : list) { 047 if (interceptStrategy instanceof Delayer) { 048 return (Delayer)interceptStrategy; 049 } 050 } 051 return null; 052 } 053 054 public Processor wrapProcessorInInterceptors(CamelContext context, ProcessorDefinition<?> definition, 055 Processor target, Processor nextTarget) throws Exception { 056 return new DelayInterceptor(context, definition, target, this); 057 } 058 059 public boolean isEnabled() { 060 return enabled; 061 } 062 063 public void setEnabled(boolean enabled) { 064 this.enabled = enabled; 065 } 066 067 public long getDelay() { 068 return delay; 069 } 070 071 @Override 072 public String toString() { 073 return "Delayer[" + delay + "]"; 074 } 075 }