Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
MulticastProcessor |
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| 0.0;0 |
1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | package org.apache.camel.processor; |
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18 | ||
19 | import java.util.ArrayList; |
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20 | import java.util.Collection; |
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21 | ||
22 | import org.apache.camel.Endpoint; |
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23 | import org.apache.camel.Exchange; |
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24 | import org.apache.camel.Processor; |
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25 | import org.apache.camel.impl.ServiceSupport; |
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26 | import org.apache.camel.util.ServiceHelper; |
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27 | ||
28 | /** |
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29 | * Implements the Multicast pattern to send a message exchange to a number of |
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30 | * endpoints, each endpoint receiving a copy of the message exchange. |
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31 | * |
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32 | * @see Pipeline |
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33 | * @version $Revision: 563607 $ |
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34 | */ |
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35 | public class MulticastProcessor extends ServiceSupport implements Processor { |
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36 | private Collection<Processor> processors; |
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37 | ||
38 | 48 | public MulticastProcessor(Collection<Processor> processors) { |
39 | 48 | this.processors = processors; |
40 | 48 | } |
41 | ||
42 | /** |
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43 | * A helper method to convert a list of endpoints into a list of processors |
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44 | */ |
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45 | public static <E extends Exchange> Collection<Processor> toProducers(Collection<Endpoint> endpoints) |
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46 | throws Exception { |
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47 | 0 | Collection<Processor> answer = new ArrayList<Processor>(); |
48 | 0 | for (Endpoint endpoint : endpoints) { |
49 | 0 | answer.add(endpoint.createProducer()); |
50 | 0 | } |
51 | 0 | return answer; |
52 | } |
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53 | ||
54 | @Override |
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55 | public String toString() { |
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56 | 3 | return "Multicast" + getProcessors(); |
57 | } |
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58 | ||
59 | public void process(Exchange exchange) throws Exception { |
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60 | 3 | for (Processor producer : processors) { |
61 | 9 | Exchange copy = copyExchangeStrategy(producer, exchange); |
62 | 9 | producer.process(copy); |
63 | 9 | } |
64 | 3 | } |
65 | ||
66 | protected void doStop() throws Exception { |
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67 | 42 | ServiceHelper.stopServices(processors); |
68 | 42 | } |
69 | ||
70 | protected void doStart() throws Exception { |
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71 | 42 | ServiceHelper.startServices(processors); |
72 | 42 | } |
73 | ||
74 | /** |
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75 | * Returns the producers to multicast to |
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76 | */ |
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77 | public Collection<Processor> getProcessors() { |
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78 | 87 | return processors; |
79 | } |
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80 | ||
81 | /** |
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82 | * Strategy method to copy the exchange before sending to another endpoint. |
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83 | * Derived classes such as the {@link Pipeline} will not clone the exchange |
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84 | * |
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85 | * @param processor the processor that will send the exchange |
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86 | * @param exchange |
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87 | * @return the current exchange if no copying is required such as for a |
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88 | * pipeline otherwise a new copy of the exchange is returned. |
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89 | */ |
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90 | protected Exchange copyExchangeStrategy(Processor processor, Exchange exchange) { |
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91 | 9 | return exchange.copy(); |
92 | } |
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93 | } |