Mercurial > hg > orthanc

annotate OrthancFramework/Sources/FileStorage/StorageCache.cpp @ 4870:43e613a7756b

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upgrade to year 2022
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:15:42 +0100
parents 7053502fbf97
children ea5f1c6ed07e
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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 "../OrthancException.h"
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29
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30
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31
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32 namespace Orthanc
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33 {
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34 bool IsAcceptedContentType(FileContentType contentType)
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35 {
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36 return contentType == FileContentType_Dicom ||
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37 contentType == FileContentType_DicomUntilPixelData ||
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38 contentType == FileContentType_DicomAsJson;
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39 }
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40
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41 const char* ToString(FileContentType contentType)
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42 {
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43 switch (contentType)
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44 {
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45 case FileContentType_Dicom:
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46 return "dicom";
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47 case FileContentType_DicomUntilPixelData:
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48 return "dicom-header";
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49 case FileContentType_DicomAsJson:
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50 return "dicom-json";
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51 default:
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52 throw OrthancException(ErrorCode_InternalError,
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53 "ContentType not supported in StorageCache");
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54 }
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55 }
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56
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57 bool GetCacheKey(std::string& key, const std::string& uuid, FileContentType contentType)
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58 {
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59 if (contentType == FileContentType_Unknown || contentType >= FileContentType_StartUser)
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60 {
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61 return false;
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62 }
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63
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64 key = uuid + ":" + std::string(ToString(contentType));
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65
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66 return true;
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67 }
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68
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69 void StorageCache::SetMaximumSize(size_t size)
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70 {
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71 cache_.SetMaximumSize(size);
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72 }
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73
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74 void StorageCache::Add(const std::string& uuid,
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75 FileContentType contentType,
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76 const std::string& value)
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77 {
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78 if (!IsAcceptedContentType(contentType))
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79 {
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80 return;
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81 }
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82
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83 std::string key;
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84
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85 if (GetCacheKey(key, uuid, contentType))
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86 {
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87 cache_.Add(key, value);
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88 }
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89 }
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90
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91 void StorageCache::Add(const std::string& uuid,
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92 FileContentType contentType,
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93 const void* buffer,
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94 size_t size)
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95 {
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96 if (!IsAcceptedContentType(contentType))
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97 {
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98 return;
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99 }
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100
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101 std::string key;
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102
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103 if (GetCacheKey(key, uuid, contentType))
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104 {
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105 cache_.Add(key, buffer, size);
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106 }
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107 }
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108
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109 void StorageCache::Invalidate(const std::string& uuid, FileContentType contentType)
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110 {
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111 std::string key;
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112
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113 if (GetCacheKey(key, uuid, contentType))
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114 {
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115 cache_.Invalidate(key);
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116 }
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117 }
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118
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119 bool StorageCache::Fetch(std::string& value,
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120 const std::string& uuid,
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121 FileContentType contentType)
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122 {
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123 if (!IsAcceptedContentType(contentType))
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124 {
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125 return false;
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126 }
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127
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128 std::string key;
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129 if (GetCacheKey(key, uuid, contentType))
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130 {
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131 return cache_.Fetch(value, key);
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132 }
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133
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134 return false;
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135 }
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136
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137
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138 }