Mercurial > hg > orthanc
annotate Core/FileStorage/FilesystemStorage.cpp @ 1461:d659b6a4e736 Orthanc-0.9.1
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 02 Jul 2015 16:50:33 +0200 |
| parents | 704de8c30ff5 |
| children | f967bdf8534e |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
| 0 | 5 * |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 136 | 10 * |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 0 | 22 * |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
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33 #include "../PrecompiledHeaders.h" |
| 1123 | 34 #include "FilesystemStorage.h" |
| 0 | 35 |
| 36 // http://stackoverflow.com/questions/1576272/storing-large-number-of-files-in-file-system | |
| 37 // http://stackoverflow.com/questions/446358/storing-a-large-number-of-images | |
| 38 | |
| 234 | 39 #include "../OrthancException.h" |
| 40 #include "../Toolbox.h" | |
| 41 #include "../Uuid.h" | |
| 0 | 42 |
| 43 #include <boost/filesystem/fstream.hpp> | |
| 1397 | 44 |
| 45 #if HAVE_GOOGLE_LOG == 1 | |
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46 #include <glog/logging.h> |
| 1397 | 47 #endif |
| 0 | 48 |
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49 static std::string ToString(const boost::filesystem::path& p) |
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50 { |
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51 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
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52 return p.filename().string(); |
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53 #else |
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54 return p.filename(); |
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55 #endif |
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56 } |
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57 |
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58 |
| 59 | 59 namespace Orthanc |
| 0 | 60 { |
| 1123 | 61 boost::filesystem::path FilesystemStorage::GetPath(const std::string& uuid) const |
| 0 | 62 { |
| 63 namespace fs = boost::filesystem; | |
| 64 | |
| 65 if (!Toolbox::IsUuid(uuid)) | |
| 66 { | |
| 59 | 67 throw OrthancException(ErrorCode_ParameterOutOfRange); |
| 0 | 68 } |
| 69 | |
| 70 fs::path path = root_; | |
| 71 | |
| 72 path /= std::string(&uuid[0], &uuid[2]); | |
| 73 path /= std::string(&uuid[2], &uuid[4]); | |
| 74 path /= uuid; | |
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75 |
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76 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
| 0 | 77 path.make_preferred(); |
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78 #endif |
| 0 | 79 |
| 80 return path; | |
| 81 } | |
| 82 | |
| 1123 | 83 FilesystemStorage::FilesystemStorage(std::string root) |
| 0 | 84 { |
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85 //root_ = boost::filesystem::absolute(root).string(); |
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86 root_ = root; |
| 0 | 87 |
| 1397 | 88 Toolbox::MakeDirectory(root); |
| 0 | 89 } |
| 90 | |
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91 void FilesystemStorage::Create(const std::string& uuid, |
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92 const void* content, |
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93 size_t size, |
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94 FileContentType /*type*/) |
| 0 | 95 { |
| 96 boost::filesystem::path path; | |
| 97 | |
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98 path = GetPath(uuid); |
| 0 | 99 |
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100 if (boost::filesystem::exists(path)) |
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101 { |
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102 // Extremely unlikely case: This Uuid has already been created |
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103 // in the past. |
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104 throw OrthancException(ErrorCode_InternalError); |
| 0 | 105 } |
| 106 | |
| 107 if (boost::filesystem::exists(path.parent_path())) | |
| 108 { | |
| 109 if (!boost::filesystem::is_directory(path.parent_path())) | |
| 110 { | |
| 59 | 111 throw OrthancException("The subdirectory to be created is already occupied by a regular file"); |
| 0 | 112 } |
| 113 } | |
| 114 else | |
| 115 { | |
| 116 if (!boost::filesystem::create_directories(path.parent_path())) | |
| 117 { | |
| 59 | 118 throw OrthancException("Unable to create a subdirectory in the file storage"); |
| 0 | 119 } |
| 120 } | |
| 121 | |
| 122 boost::filesystem::ofstream f; | |
| 123 f.open(path, std::ofstream::out | std::ios::binary); | |
| 124 if (!f.good()) | |
| 125 { | |
| 59 | 126 throw OrthancException("Unable to create a new file in the file storage"); |
| 0 | 127 } |
| 128 | |
| 129 if (size != 0) | |
| 130 { | |
| 131 f.write(static_cast<const char*>(content), size); | |
| 132 if (!f.good()) | |
| 133 { | |
| 134 f.close(); | |
| 59 | 135 throw OrthancException("Unable to write to the new file in the file storage"); |
| 0 | 136 } |
| 137 } | |
| 138 | |
| 139 f.close(); | |
| 140 } | |
| 141 | |
| 142 | |
| 1123 | 143 void FilesystemStorage::Read(std::string& content, |
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144 const std::string& uuid, |
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145 FileContentType /*type*/) |
| 0 | 146 { |
| 147 content.clear(); | |
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148 Toolbox::ReadFile(content, GetPath(uuid).string()); |
| 0 | 149 } |
| 150 | |
| 151 | |
| 1123 | 152 uintmax_t FilesystemStorage::GetSize(const std::string& uuid) const |
| 0 | 153 { |
| 154 boost::filesystem::path path = GetPath(uuid); | |
| 155 return boost::filesystem::file_size(path); | |
| 156 } | |
| 157 | |
| 158 | |
| 159 | |
| 1123 | 160 void FilesystemStorage::ListAllFiles(std::set<std::string>& result) const |
| 0 | 161 { |
| 162 namespace fs = boost::filesystem; | |
| 163 | |
| 164 result.clear(); | |
| 165 | |
| 166 if (fs::exists(root_) && fs::is_directory(root_)) | |
| 167 { | |
| 168 for (fs::recursive_directory_iterator current(root_), end; current != end ; ++current) | |
| 169 { | |
| 170 if (fs::is_regular_file(current->status())) | |
| 171 { | |
| 172 try | |
| 173 { | |
| 174 fs::path d = current->path(); | |
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175 std::string uuid = ToString(d); |
| 0 | 176 if (Toolbox::IsUuid(uuid)) |
| 177 { | |
| 178 fs::path p0 = d.parent_path().parent_path().parent_path(); | |
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179 std::string p1 = ToString(d.parent_path().parent_path()); |
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180 std::string p2 = ToString(d.parent_path()); |
| 0 | 181 if (p1.length() == 2 && |
| 182 p2.length() == 2 && | |
| 183 p1 == uuid.substr(0, 2) && | |
| 184 p2 == uuid.substr(2, 2) && | |
| 185 p0 == root_) | |
| 186 { | |
| 187 result.insert(uuid); | |
| 188 } | |
| 189 } | |
| 190 } | |
| 191 catch (fs::filesystem_error) | |
| 192 { | |
| 193 } | |
| 194 } | |
| 195 } | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 | |
| 1123 | 200 void FilesystemStorage::Clear() |
| 0 | 201 { |
| 202 namespace fs = boost::filesystem; | |
| 203 typedef std::set<std::string> List; | |
| 204 | |
| 205 List result; | |
| 206 ListAllFiles(result); | |
| 207 | |
| 656 | 208 for (List::const_iterator it = result.begin(); it != result.end(); ++it) |
| 0 | 209 { |
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210 Remove(*it, FileContentType_Unknown /*ignored in this class*/); |
| 0 | 211 } |
| 212 } | |
| 213 | |
| 214 | |
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215 void FilesystemStorage::Remove(const std::string& uuid, |
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216 FileContentType /*type*/) |
| 0 | 217 { |
| 1397 | 218 #if HAVE_GOOGLE_LOG == 1 |
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219 LOG(INFO) << "Deleting file " << uuid; |
| 1397 | 220 #endif |
| 221 | |
| 0 | 222 namespace fs = boost::filesystem; |
| 223 | |
| 224 fs::path p = GetPath(uuid); | |
| 147 | 225 |
| 226 try | |
| 227 { | |
| 228 fs::remove(p); | |
| 229 } | |
| 148 | 230 catch (...) |
| 147 | 231 { |
| 232 // Ignore the error | |
| 233 } | |
| 0 | 234 |
| 235 // Remove the two parent directories, ignoring the error code if | |
| 236 // these directories are not empty | |
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237 |
| 142 | 238 try |
| 239 { | |
| 147 | 240 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
| 241 boost::system::error_code err; | |
| 242 fs::remove(p.parent_path(), err); | |
| 243 fs::remove(p.parent_path().parent_path(), err); | |
| 244 #else | |
| 245 fs::remove(p.parent_path()); | |
| 246 fs::remove(p.parent_path().parent_path()); | |
| 247 #endif | |
| 142 | 248 } |
| 148 | 249 catch (...) |
| 142 | 250 { |
| 251 // Ignore the error | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 | |
| 1123 | 256 uintmax_t FilesystemStorage::GetCapacity() const |
| 0 | 257 { |
| 258 return boost::filesystem::space(root_).capacity; | |
| 259 } | |
| 260 | |
| 1123 | 261 uintmax_t FilesystemStorage::GetAvailableSpace() const |
| 0 | 262 { |
| 263 return boost::filesystem::space(root_).available; | |
| 264 } | |
| 265 } |