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annotate OrthancFramework/Sources/FileStorage/StorageAccessor.h @ 5765:247fc5368693 find-refactoring

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un-sharing DatabaseConstraint and ISqlLookupFormatter with orthanc-databases
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 09 Sep 2024 16:14:22 +0200
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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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25 #pragma once
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26
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27 #if !defined(ORTHANC_SANDBOXED)
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28 # error The macro ORTHANC_SANDBOXED must be defined
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29 #endif
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30
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31 #if ORTHANC_SANDBOXED == 1
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32 # error The class StorageAccessor cannot be used in sandboxed environments
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33 #endif
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34
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35 #if !defined(ORTHANC_ENABLE_CIVETWEB)
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36 # error Macro ORTHANC_ENABLE_CIVETWEB must be defined to use this file
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37 #endif
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38
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39 #if !defined(ORTHANC_ENABLE_MONGOOSE)
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40 # error Macro ORTHANC_ENABLE_MONGOOSE must be defined to use this file
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41 #endif
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42
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43 #include "IStorageArea.h"
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44 #include "FileInfo.h"
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45
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46 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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47 # include "../HttpServer/BufferHttpSender.h"
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48 # include "../RestApi/RestApiOutput.h"
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49 #endif
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50
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51 #include <vector>
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52 #include <string>
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53 #include <boost/noncopyable.hpp>
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54 #include <stdint.h>
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55
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56 namespace Orthanc
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57 {
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58 class MetricsRegistry;
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59 class StorageCache;
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60
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61 /**
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62 * This class handles the compression/decompression of the raw files
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63 * contained in the storage area, and monitors timing metrics (if
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64 * enabled).
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65 **/
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66 class ORTHANC_PUBLIC StorageAccessor : boost::noncopyable
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67 {
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68 private:
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69 class MetricsTimer;
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71 IStorageArea& area_;
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72 StorageCache* cache_;
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73 MetricsRegistry* metrics_;
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74
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75 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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76 void SetupSender(BufferHttpSender& sender,
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77 const FileInfo& info,
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78 const std::string& mime);
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79 #endif
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80
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81 public:
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82 explicit StorageAccessor(IStorageArea& area);
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84 StorageAccessor(IStorageArea& area,
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85 StorageCache& cache);
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86
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87 StorageAccessor(IStorageArea& area,
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88 MetricsRegistry& metrics);
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89
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90 StorageAccessor(IStorageArea& area,
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91 StorageCache& cache,
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92 MetricsRegistry& metrics);
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93
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94 FileInfo Write(const void* data,
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95 size_t size,
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96 FileContentType type,
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97 CompressionType compression,
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98 bool storeMd5);
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99
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100 FileInfo Write(const std::string& data,
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101 FileContentType type,
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102 CompressionType compression,
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103 bool storeMd5);
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104
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105 void Read(std::string& content,
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106 const FileInfo& info);
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107
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108 void ReadRaw(std::string& content,
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109 const FileInfo& info);
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110
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111 void ReadStartRange(std::string& target,
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112 const FileInfo& info,
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113 uint64_t end /* exclusive */);
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114
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115 void Remove(const std::string& fileUuid,
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116 FileContentType type);
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117
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118 void Remove(const FileInfo& info);
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119
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120 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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121 void AnswerFile(HttpOutput& output,
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122 const FileInfo& info,
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123 MimeType mime);
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124
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125 void AnswerFile(HttpOutput& output,
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126 const FileInfo& info,
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127 const std::string& mime);
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128
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129 void AnswerFile(RestApiOutput& output,
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130 const FileInfo& info,
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131 MimeType mime);
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132
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133 void AnswerFile(RestApiOutput& output,
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134 const FileInfo& info,
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135 const std::string& mime);
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136 #endif
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137 private:
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138 void ReadStartRangeInternal(std::string& target,
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139 const FileInfo& info,
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140 uint64_t end /* exclusive */);
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141
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142 void ReadWholeInternal(std::string& content,
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143 const FileInfo& info);
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144
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145 void ReadRawInternal(std::string& content,
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146 const FileInfo& info);
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147
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148 };
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149 }