Mercurial > hg > orthanc
annotate Core/FileStorage/FilesystemStorage.cpp @ 1253:f66beac9ee42
readme
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 08 Jan 2015 13:08:58 +0100 |
| parents | 2ffe07abd9d8 |
| children | 6e7e5ed91c2d |
| rev | line source |
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| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 689 | 3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, |
| 0 | 4 * Belgium |
| 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> | |
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44 #include <glog/logging.h> |
| 0 | 45 |
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46 static std::string ToString(const boost::filesystem::path& p) |
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47 { |
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48 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
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49 return p.filename().string(); |
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50 #else |
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51 return p.filename(); |
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52 #endif |
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53 } |
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54 |
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55 |
| 59 | 56 namespace Orthanc |
| 0 | 57 { |
| 1123 | 58 boost::filesystem::path FilesystemStorage::GetPath(const std::string& uuid) const |
| 0 | 59 { |
| 60 namespace fs = boost::filesystem; | |
| 61 | |
| 62 if (!Toolbox::IsUuid(uuid)) | |
| 63 { | |
| 59 | 64 throw OrthancException(ErrorCode_ParameterOutOfRange); |
| 0 | 65 } |
| 66 | |
| 67 fs::path path = root_; | |
| 68 | |
| 69 path /= std::string(&uuid[0], &uuid[2]); | |
| 70 path /= std::string(&uuid[2], &uuid[4]); | |
| 71 path /= uuid; | |
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72 |
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73 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
| 0 | 74 path.make_preferred(); |
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75 #endif |
| 0 | 76 |
| 77 return path; | |
| 78 } | |
| 79 | |
| 1123 | 80 FilesystemStorage::FilesystemStorage(std::string root) |
| 0 | 81 { |
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82 //root_ = boost::filesystem::absolute(root).string(); |
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83 root_ = root; |
| 0 | 84 |
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85 Toolbox::CreateDirectory(root); |
| 0 | 86 } |
| 87 | |
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88 void FilesystemStorage::Create(const std::string& uuid, |
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89 const void* content, |
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90 size_t size, |
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91 FileContentType /*type*/) |
| 0 | 92 { |
| 93 boost::filesystem::path path; | |
| 94 | |
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95 path = GetPath(uuid); |
| 0 | 96 |
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97 if (boost::filesystem::exists(path)) |
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98 { |
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99 // Extremely unlikely case: This Uuid has already been created |
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100 // in the past. |
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101 throw OrthancException(ErrorCode_InternalError); |
| 0 | 102 } |
| 103 | |
| 104 if (boost::filesystem::exists(path.parent_path())) | |
| 105 { | |
| 106 if (!boost::filesystem::is_directory(path.parent_path())) | |
| 107 { | |
| 59 | 108 throw OrthancException("The subdirectory to be created is already occupied by a regular file"); |
| 0 | 109 } |
| 110 } | |
| 111 else | |
| 112 { | |
| 113 if (!boost::filesystem::create_directories(path.parent_path())) | |
| 114 { | |
| 59 | 115 throw OrthancException("Unable to create a subdirectory in the file storage"); |
| 0 | 116 } |
| 117 } | |
| 118 | |
| 119 boost::filesystem::ofstream f; | |
| 120 f.open(path, std::ofstream::out | std::ios::binary); | |
| 121 if (!f.good()) | |
| 122 { | |
| 59 | 123 throw OrthancException("Unable to create a new file in the file storage"); |
| 0 | 124 } |
| 125 | |
| 126 if (size != 0) | |
| 127 { | |
| 128 f.write(static_cast<const char*>(content), size); | |
| 129 if (!f.good()) | |
| 130 { | |
| 131 f.close(); | |
| 59 | 132 throw OrthancException("Unable to write to the new file in the file storage"); |
| 0 | 133 } |
| 134 } | |
| 135 | |
| 136 f.close(); | |
| 137 } | |
| 138 | |
| 139 | |
| 1123 | 140 void FilesystemStorage::Read(std::string& content, |
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141 const std::string& uuid, |
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142 FileContentType /*type*/) |
| 0 | 143 { |
| 144 content.clear(); | |
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145 Toolbox::ReadFile(content, GetPath(uuid).string()); |
| 0 | 146 } |
| 147 | |
| 148 | |
| 1123 | 149 uintmax_t FilesystemStorage::GetSize(const std::string& uuid) const |
| 0 | 150 { |
| 151 boost::filesystem::path path = GetPath(uuid); | |
| 152 return boost::filesystem::file_size(path); | |
| 153 } | |
| 154 | |
| 155 | |
| 156 | |
| 1123 | 157 void FilesystemStorage::ListAllFiles(std::set<std::string>& result) const |
| 0 | 158 { |
| 159 namespace fs = boost::filesystem; | |
| 160 | |
| 161 result.clear(); | |
| 162 | |
| 163 if (fs::exists(root_) && fs::is_directory(root_)) | |
| 164 { | |
| 165 for (fs::recursive_directory_iterator current(root_), end; current != end ; ++current) | |
| 166 { | |
| 167 if (fs::is_regular_file(current->status())) | |
| 168 { | |
| 169 try | |
| 170 { | |
| 171 fs::path d = current->path(); | |
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172 std::string uuid = ToString(d); |
| 0 | 173 if (Toolbox::IsUuid(uuid)) |
| 174 { | |
| 175 fs::path p0 = d.parent_path().parent_path().parent_path(); | |
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176 std::string p1 = ToString(d.parent_path().parent_path()); |
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177 std::string p2 = ToString(d.parent_path()); |
| 0 | 178 if (p1.length() == 2 && |
| 179 p2.length() == 2 && | |
| 180 p1 == uuid.substr(0, 2) && | |
| 181 p2 == uuid.substr(2, 2) && | |
| 182 p0 == root_) | |
| 183 { | |
| 184 result.insert(uuid); | |
| 185 } | |
| 186 } | |
| 187 } | |
| 188 catch (fs::filesystem_error) | |
| 189 { | |
| 190 } | |
| 191 } | |
| 192 } | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 | |
| 1123 | 197 void FilesystemStorage::Clear() |
| 0 | 198 { |
| 199 namespace fs = boost::filesystem; | |
| 200 typedef std::set<std::string> List; | |
| 201 | |
| 202 List result; | |
| 203 ListAllFiles(result); | |
| 204 | |
| 656 | 205 for (List::const_iterator it = result.begin(); it != result.end(); ++it) |
| 0 | 206 { |
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207 Remove(*it, FileContentType_Unknown /*ignored in this class*/); |
| 0 | 208 } |
| 209 } | |
| 210 | |
| 211 | |
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212 void FilesystemStorage::Remove(const std::string& uuid, |
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213 FileContentType /*type*/) |
| 0 | 214 { |
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215 LOG(INFO) << "Deleting file " << uuid; |
| 0 | 216 namespace fs = boost::filesystem; |
| 217 | |
| 218 fs::path p = GetPath(uuid); | |
| 147 | 219 |
| 220 try | |
| 221 { | |
| 222 fs::remove(p); | |
| 223 } | |
| 148 | 224 catch (...) |
| 147 | 225 { |
| 226 // Ignore the error | |
| 227 } | |
| 0 | 228 |
| 229 // Remove the two parent directories, ignoring the error code if | |
| 230 // these directories are not empty | |
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231 |
| 142 | 232 try |
| 233 { | |
| 147 | 234 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
| 235 boost::system::error_code err; | |
| 236 fs::remove(p.parent_path(), err); | |
| 237 fs::remove(p.parent_path().parent_path(), err); | |
| 238 #else | |
| 239 fs::remove(p.parent_path()); | |
| 240 fs::remove(p.parent_path().parent_path()); | |
| 241 #endif | |
| 142 | 242 } |
| 148 | 243 catch (...) |
| 142 | 244 { |
| 245 // Ignore the error | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 | |
| 1123 | 250 uintmax_t FilesystemStorage::GetCapacity() const |
| 0 | 251 { |
| 252 return boost::filesystem::space(root_).capacity; | |
| 253 } | |
| 254 | |
| 1123 | 255 uintmax_t FilesystemStorage::GetAvailableSpace() const |
| 0 | 256 { |
| 257 return boost::filesystem::space(root_).available; | |
| 258 } | |
| 259 } |