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 boolean enabled = true;
032 private long delay;
033
034 public Delayer() {
035 }
036
037 public Delayer(long delay) {
038 this.delay = delay;
039 }
040
041 /**
042 * A helper method to return the Delayer instance for a given {@link org.apache.camel.CamelContext} if one is enabled
043 *
044 * @param context the camel context the delayer is connected to
045 * @return the delayer or null if none can be found
046 */
047 public static Delayer getDelayer(CamelContext context) {
048 List<InterceptStrategy> list = context.getInterceptStrategies();
049 for (InterceptStrategy interceptStrategy : list) {
050 if (interceptStrategy instanceof Delayer) {
051 return (Delayer)interceptStrategy;
052 }
053 }
054 return null;
055 }
056
057 public Processor wrapProcessorInInterceptors(ProcessorDefinition processorDefinition, Processor target, Processor nextTarget) throws Exception {
058 return new DelayInterceptor(processorDefinition, target, this);
059 }
060
061 public boolean isEnabled() {
062 return enabled;
063 }
064
065 public void setEnabled(boolean enabled) {
066 this.enabled = enabled;
067 }
068
069 public long getDelay() {
070 return delay;
071 }
072
073 public void setDelay(long delay) {
074 this.delay = delay;
075 }
076
077 @Override
078 public String toString() {
079 return "Delayer[" + delay + "]";
080 }
081 }