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 Delayer 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 Delayer) {
054 return (Delayer)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 }