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annotate OrthancFramework/Sources/FileStorage/StorageCache.cpp @ 4900:ea5f1c6ed07e

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fix cache of storage area
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sun, 20 Feb 2022 16:29:33 +0100
parents 43e613a7756b
children f656fb878b50
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "../PrecompiledHeaders.h"
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25 #include "StorageCache.h"
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26
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27 #include "../Compatibility.h"
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28 #include "../Logging.h"
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29 #include "../OrthancException.h"
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30
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31 #include <boost/lexical_cast.hpp>
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33
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34 namespace Orthanc
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35 {
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36 static std::string GetCacheKey(const std::string& uuid,
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37 FileContentType contentType)
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38 {
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39 return uuid + ":" + boost::lexical_cast<std::string>(contentType);
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40 }
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41
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42
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43 void StorageCache::SetMaximumSize(size_t size)
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44 {
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45 cache_.SetMaximumSize(size);
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46 }
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47
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48
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49 void StorageCache::Add(const std::string& uuid,
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50 FileContentType contentType,
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51 const std::string& value)
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52 {
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53 const std::string key = GetCacheKey(uuid, contentType);
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54 cache_.Add(key, value);
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55 }
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56
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58 void StorageCache::Add(const std::string& uuid,
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59 FileContentType contentType,
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60 const void* buffer,
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61 size_t size)
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62 {
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63 const std::string key = GetCacheKey(uuid, contentType);
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64 cache_.Add(key, buffer, size);
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65 }
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66
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67
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68 void StorageCache::Invalidate(const std::string& uuid,
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69 FileContentType contentType)
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70 {
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71 const std::string key = GetCacheKey(uuid, contentType);
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72 cache_.Invalidate(key);
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73 }
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76 bool StorageCache::Fetch(std::string& value,
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77 const std::string& uuid,
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78 FileContentType contentType)
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79 {
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80 const std::string key = GetCacheKey(uuid, contentType);
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81 if (cache_.Fetch(value, key))
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82 {
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83 LOG(INFO) << "Read attachment \"" << uuid << "\" with content type "
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84 << boost::lexical_cast<std::string>(contentType) << " from cache";
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85 return true;
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86 }
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87 else
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88 {
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89 return false;
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90 }
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91 }
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92 }