Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
MemoryMessageIdRepository |
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| 1.4;1.4 |
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.idempotent; |
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18 | ||
19 | import java.util.HashMap; |
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20 | import java.util.Map; |
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21 | ||
22 | import org.apache.camel.util.LRUCache; |
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23 | ||
24 | /** |
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25 | * A memory based implementation of {@link MessageIdRepository}. Care should be |
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26 | * taken to use a suitable underlying {@link Map} to avoid this class being a |
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27 | * memory leak |
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28 | * |
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29 | * @version $Revision: 1.1 $ |
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30 | */ |
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31 | public class MemoryMessageIdRepository implements MessageIdRepository { |
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32 | private Map cache; |
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33 | ||
34 | 6 | public MemoryMessageIdRepository(Map set) { |
35 | 6 | this.cache = set; |
36 | 6 | } |
37 | ||
38 | /** |
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39 | * Creates a new MemoryMessageIdRepository with a memory based respository. |
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40 | * <b>Warning</b> this method should only really be used for testing as it |
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41 | * will involve keeping all message IDs in RAM. |
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42 | */ |
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43 | public static MessageIdRepository memoryMessageIdRepository() { |
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44 | 0 | return memoryMessageIdRepository(new HashMap()); |
45 | } |
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46 | ||
47 | /** |
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48 | * Creates a new MemoryMessageIdRepository with a memory based respository. |
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49 | * <b>Warning</b> this method should only really be used for testing as it |
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50 | * will involve keeping all message IDs in RAM. |
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51 | */ |
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52 | public static MessageIdRepository memoryMessageIdRepository(int cacheSize) { |
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53 | 6 | return memoryMessageIdRepository(new LRUCache(cacheSize)); |
54 | } |
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55 | ||
56 | /** |
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57 | * Creates a new MemoryMessageIdRepository using the given {@link Map} to |
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58 | * use to store the processed Message ID objects. Warning be cafeful of the |
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59 | * implementation of Map you use as if you are not careful it could be a |
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60 | * memory leak. |
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61 | */ |
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62 | public static MessageIdRepository memoryMessageIdRepository(Map cache) { |
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63 | 6 | return new MemoryMessageIdRepository(cache); |
64 | } |
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65 | ||
66 | public boolean contains(String messageId) { |
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67 | 18 | synchronized (cache) { |
68 | 18 | if (cache.containsKey(messageId)) { |
69 | 9 | return true; |
70 | } else { |
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71 | 9 | cache.put(messageId, messageId); |
72 | 9 | return false; |
73 | } |
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74 | 0 | } |
75 | } |
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76 | } |