Mercurial > hg > orthanc

annotate OrthancServer/ServerContext.cpp @ 288:40d3bf6cc8d9

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 14 Dec 2012 11:22:04 +0100
parents 4031f73fe0e4
children 4d7469f72a0b
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "ServerContext.h"
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34
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35 #include "../Core/HttpServer/FilesystemHttpSender.h"
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36
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37 #include <glog/logging.h>
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38
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39
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40 static const size_t DICOM_CACHE_SIZE = 2;
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41
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42 /**
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43 * IMPORTANT: We make the assumption that the same instance of
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44 * FileStorage can be accessed from multiple threads. This seems OK
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45 * since the filesystem implements the required locking mechanisms,
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46 * but maybe a read-writer lock on the "FileStorage" could be
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47 * useful. Conversely, "ServerIndex" already implements mutex-based
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48 * locking.
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49 **/
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50
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51 namespace Orthanc
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52 {
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53 ServerContext::ServerContext(const boost::filesystem::path& path) :
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54 storage_(path.string()),
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55 index_(*this, path.string()),
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56 accessor_(storage_),
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57 provider_(*this),
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58 dicomCache_(provider_, DICOM_CACHE_SIZE)
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59 {
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60 }
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61
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62 void ServerContext::SetCompressionEnabled(bool enabled)
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63 {
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64 if (enabled)
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65 LOG(WARNING) << "Disk compression is enabled";
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66 else
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67 LOG(WARNING) << "Disk compression is disabled";
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68
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69 compressionEnabled_ = enabled;
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70 }
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71
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72 void ServerContext::RemoveFile(const std::string& fileUuid)
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73 {
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74 storage_.Remove(fileUuid);
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75 }
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76
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77 StoreStatus ServerContext::Store(const char* dicomFile,
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78 size_t dicomSize,
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79 const DicomMap& dicomSummary,
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80 const Json::Value& dicomJson,
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81 const std::string& remoteAet)
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82 {
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83 if (compressionEnabled_)
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84 {
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85 accessor_.SetCompressionForNextOperations(CompressionType_Zlib);
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86 }
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87 else
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88 {
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89 accessor_.SetCompressionForNextOperations(CompressionType_None);
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90 }
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91
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92 FileInfo dicomInfo = accessor_.Write(dicomFile, dicomSize, FileContentType_Dicom);
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93 FileInfo jsonInfo = accessor_.Write(dicomJson.toStyledString(), FileContentType_Json);
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94
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95 ServerIndex::Attachments attachments;
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96 attachments.push_back(dicomInfo);
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97 attachments.push_back(jsonInfo);
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98
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99 StoreStatus status = index_.Store(dicomSummary, attachments, remoteAet);
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100
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101 if (status != StoreStatus_Success)
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102 {
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103 storage_.Remove(dicomInfo.GetUuid());
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104 storage_.Remove(jsonInfo.GetUuid());
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105 }
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106
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107 switch (status)
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108 {
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109 case StoreStatus_Success:
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110 LOG(INFO) << "New instance stored";
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111 break;
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112
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113 case StoreStatus_AlreadyStored:
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114 LOG(INFO) << "Already stored";
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115 break;
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116
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117 case StoreStatus_Failure:
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118 LOG(ERROR) << "Store failure";
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119 break;
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120 }
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121
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122 return status;
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123 }
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124
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125
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126 void ServerContext::AnswerFile(RestApiOutput& output,
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127 const std::string& instancePublicId,
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128 FileContentType content)
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129 {
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130 FileInfo attachment;
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131 if (!index_.LookupAttachment(attachment, instancePublicId, content))
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132 {
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133 throw OrthancException(ErrorCode_InternalError);
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134 }
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135
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136 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType());
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137 std::auto_ptr<HttpFileSender> sender(accessor_.ConstructHttpFileSender(attachment.GetUuid()));
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138 output.AnswerFile(*sender);
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139 }
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140
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141
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142 void ServerContext::ReadJson(Json::Value& result,
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143 const std::string& instancePublicId)
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144 {
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145 std::string s;
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146 ReadFile(s, instancePublicId, FileContentType_Json);
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147
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148 Json::Reader reader;
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149 if (!reader.parse(s, result))
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150 {
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151 throw OrthancException("Corrupted JSON file");
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152 }
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153 }
227
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154
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155
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156 void ServerContext::ReadFile(std::string& result,
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157 const std::string& instancePublicId,
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158 FileContentType content)
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159 {
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160 FileInfo attachment;
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161 if (!index_.LookupAttachment(attachment, instancePublicId, content))
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162 {
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163 throw OrthancException(ErrorCode_InternalError);
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164 }
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165
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166 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType());
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167 accessor_.Read(result, attachment.GetUuid());
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168 }
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169
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170
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171 IDynamicObject* ServerContext::DicomCacheProvider::Provide(const std::string& instancePublicId)
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172 {
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173 std::string content;
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174 context_.ReadFile(content, instancePublicId, FileContentType_Dicom);
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175 return new ParsedDicomFile(content);
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176 }
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177
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178
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179 ParsedDicomFile& ServerContext::GetDicomFile(const std::string& instancePublicId)
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180 {
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181 return dynamic_cast<ParsedDicomFile&>(dicomCache_.Access(instancePublicId));
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182 }
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183 }