Mercurial > hg > orthanc
annotate OrthancFramework/Sources/FileStorage/StorageCache.h @ 5853:4d932683049d get-scu tip
very first implementation of C-Get SCU
author | Alain Mazy <am@orthanc.team> |
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date | Tue, 29 Oct 2024 17:25:49 +0100 |
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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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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8 * |
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9 * This program is free software: you can redistribute it and/or |
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10 * modify it under the terms of the GNU Lesser General Public License |
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11 * as published by the Free Software Foundation, either version 3 of |
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12 * the License, or (at your option) any later version. |
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13 * |
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14 * This program is distributed in the hope that it will be useful, but |
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 * Lesser General Public License for more details. |
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18 * |
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19 * You should have received a copy of the GNU Lesser General Public |
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20 * License along with this program. If not, see |
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21 * <http://www.gnu.org/licenses/>. |
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22 **/ |
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23 |
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24 |
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25 #pragma once |
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26 |
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27 #include "../Cache/MemoryStringCache.h" |
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28 |
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29 #include "../Compatibility.h" // For ORTHANC_OVERRIDE |
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30 |
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31 #include <boost/thread/mutex.hpp> |
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32 #include <map> |
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33 |
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34 namespace Orthanc |
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35 { |
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36 /** |
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37 * Note: this class is thread safe |
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38 **/ |
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39 class ORTHANC_PUBLIC StorageCache : public boost::noncopyable |
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40 { |
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41 public: |
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42 |
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43 // The StorageCache is only accessible through this accessor. |
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44 // It will make sure that only one user will fill load data and fill |
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45 // the cache if multiple users try to access the same item at the same time. |
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46 // This scenario happens a lot when multiple workers from a viewer access |
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47 // the same file. |
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48 class Accessor : public MemoryStringCache::Accessor |
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49 { |
5427 | 50 StorageCache& storageCache_; |
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51 public: |
5460 | 52 explicit Accessor(StorageCache& cache); |
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53 |
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54 void Add(const std::string& uuid, |
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55 FileContentType contentType, |
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56 const std::string& value); |
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57 |
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58 void AddStartRange(const std::string& uuid, |
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59 FileContentType contentType, |
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60 const std::string& value); |
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61 |
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62 void Add(const std::string& uuid, |
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63 FileContentType contentType, |
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64 const void* buffer, |
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65 size_t size); |
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66 |
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67 bool Fetch(std::string& value, |
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68 const std::string& uuid, |
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69 FileContentType contentType); |
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70 |
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71 bool FetchStartRange(std::string& value, |
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72 const std::string& uuid, |
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73 FileContentType contentType, |
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74 uint64_t end /* exclusive */); |
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75 |
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76 bool FetchTranscodedInstance(std::string& value, |
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77 const std::string& uuid, |
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78 DicomTransferSyntax targetSyntax); |
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79 |
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80 void AddTranscodedInstance(const std::string& uuid, |
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81 DicomTransferSyntax targetSyntax, |
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82 const void* buffer, |
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83 size_t size); |
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84 }; |
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85 |
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86 private: |
5427 | 87 MemoryStringCache cache_; |
88 std::set<DicomTransferSyntax> subKeysTransferSyntax_; | |
89 boost::mutex subKeysMutex_; | |
90 | |
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91 public: |
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92 void SetMaximumSize(size_t size); |
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93 |
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94 void Invalidate(const std::string& uuid, |
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95 FileContentType contentType); |
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96 |
5431 | 97 size_t GetCurrentSize() const; |
98 | |
99 size_t GetNumberOfItems() const; | |
100 | |
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101 private: |
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102 void Add(const std::string& uuid, |
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103 FileContentType contentType, |
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104 const std::string& value); |
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105 |
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106 void AddStartRange(const std::string& uuid, |
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107 FileContentType contentType, |
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108 const std::string& value); |
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109 |
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110 void Add(const std::string& uuid, |
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111 FileContentType contentType, |
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112 const void* buffer, |
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113 size_t size); |
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114 |
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115 bool Fetch(std::string& value, |
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116 const std::string& uuid, |
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117 FileContentType contentType); |
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118 |
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119 bool FetchStartRange(std::string& value, |
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120 const std::string& uuid, |
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121 FileContentType contentType, |
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122 uint64_t end /* exclusive */); |
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123 |
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124 }; |
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125 } |