Mercurial > hg > orthanc
annotate Core/FileStorage.cpp @ 132:5321f3609639
fix of static google log
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 08 Oct 2012 10:34:13 +0200 |
| parents | fd7b0a3e6260 |
| children | fe180eae201d |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 0 | 3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege, |
| 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. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 **/ | |
| 19 | |
| 20 | |
| 21 #include "FileStorage.h" | |
| 22 | |
| 23 // http://stackoverflow.com/questions/1576272/storing-large-number-of-files-in-file-system | |
| 24 // http://stackoverflow.com/questions/446358/storing-a-large-number-of-images | |
| 25 | |
| 59 | 26 #include "OrthancException.h" |
| 0 | 27 #include "Toolbox.h" |
| 28 #include "Uuid.h" | |
| 29 | |
| 30 #include <boost/filesystem/fstream.hpp> | |
| 31 | |
|
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32 static std::string ToString(const boost::filesystem::path& p) |
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33 { |
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34 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
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35 return p.filename().string(); |
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36 #else |
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37 return p.filename(); |
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38 #endif |
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39 } |
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40 |
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41 |
| 59 | 42 namespace Orthanc |
| 0 | 43 { |
| 44 boost::filesystem::path FileStorage::GetPath(const std::string& uuid) const | |
| 45 { | |
| 46 namespace fs = boost::filesystem; | |
| 47 | |
| 48 if (!Toolbox::IsUuid(uuid)) | |
| 49 { | |
| 59 | 50 throw OrthancException(ErrorCode_ParameterOutOfRange); |
| 0 | 51 } |
| 52 | |
| 53 fs::path path = root_; | |
| 54 | |
| 55 path /= std::string(&uuid[0], &uuid[2]); | |
| 56 path /= std::string(&uuid[2], &uuid[4]); | |
| 57 path /= uuid; | |
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58 |
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59 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
| 0 | 60 path.make_preferred(); |
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61 #endif |
| 0 | 62 |
| 63 return path; | |
| 64 } | |
| 65 | |
| 66 FileStorage::FileStorage(std::string root) | |
| 67 { | |
| 68 namespace fs = boost::filesystem; | |
| 69 | |
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70 //root_ = boost::filesystem::absolute(root).string(); |
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71 root_ = root; |
| 0 | 72 |
| 73 if (fs::exists(root)) | |
| 74 { | |
| 75 if (!fs::is_directory(root)) | |
| 76 { | |
| 59 | 77 throw OrthancException("The file storage root directory is a file"); |
| 0 | 78 } |
| 79 } | |
| 80 else | |
| 81 { | |
| 82 if (!fs::create_directories(root)) | |
| 83 { | |
| 59 | 84 throw OrthancException("Unable to create the file storage root directory"); |
| 0 | 85 } |
| 86 } | |
| 87 } | |
| 88 | |
| 89 std::string FileStorage::CreateFileWithoutCompression(const void* content, size_t size) | |
| 90 { | |
| 91 std::string uuid; | |
| 92 boost::filesystem::path path; | |
| 93 | |
| 94 for (;;) | |
| 95 { | |
| 96 uuid = Toolbox::GenerateUuid(); | |
| 97 path = GetPath(uuid); | |
| 98 | |
| 99 if (!boost::filesystem::exists(path)) | |
| 100 { | |
| 101 // OK, this is indeed a new file | |
| 102 break; | |
| 103 } | |
| 104 | |
| 105 // Extremely improbable case: This Uuid has already been created | |
| 106 // in the past. Try again. | |
| 107 } | |
| 108 | |
| 109 if (boost::filesystem::exists(path.parent_path())) | |
| 110 { | |
| 111 if (!boost::filesystem::is_directory(path.parent_path())) | |
| 112 { | |
| 59 | 113 throw OrthancException("The subdirectory to be created is already occupied by a regular file"); |
| 0 | 114 } |
| 115 } | |
| 116 else | |
| 117 { | |
| 118 if (!boost::filesystem::create_directories(path.parent_path())) | |
| 119 { | |
| 59 | 120 throw OrthancException("Unable to create a subdirectory in the file storage"); |
| 0 | 121 } |
| 122 } | |
| 123 | |
| 124 boost::filesystem::ofstream f; | |
| 125 f.open(path, std::ofstream::out | std::ios::binary); | |
| 126 if (!f.good()) | |
| 127 { | |
| 59 | 128 throw OrthancException("Unable to create a new file in the file storage"); |
| 0 | 129 } |
| 130 | |
| 131 if (size != 0) | |
| 132 { | |
| 133 f.write(static_cast<const char*>(content), size); | |
| 134 if (!f.good()) | |
| 135 { | |
| 136 f.close(); | |
| 59 | 137 throw OrthancException("Unable to write to the new file in the file storage"); |
| 0 | 138 } |
| 139 } | |
| 140 | |
| 141 f.close(); | |
| 142 | |
| 143 return uuid; | |
| 144 } | |
| 145 | |
| 146 | |
| 147 std::string FileStorage::Create(const void* content, size_t size) | |
| 148 { | |
| 149 if (!HasBufferCompressor() || size == 0) | |
| 150 { | |
| 151 return CreateFileWithoutCompression(content, size); | |
| 152 } | |
| 153 else | |
| 154 { | |
| 155 std::string compressed; | |
| 156 compressor_->Compress(compressed, content, size); | |
| 157 assert(compressed.size() > 0); | |
| 158 return CreateFileWithoutCompression(&compressed[0], compressed.size()); | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 | |
| 163 std::string FileStorage::Create(const std::vector<uint8_t>& content) | |
| 164 { | |
| 165 if (content.size() == 0) | |
| 166 return Create(NULL, 0); | |
| 167 else | |
| 168 return Create(&content[0], content.size()); | |
| 169 } | |
| 170 | |
| 171 std::string FileStorage::Create(const std::string& content) | |
| 172 { | |
| 173 if (content.size() == 0) | |
| 174 return Create(NULL, 0); | |
| 175 else | |
| 176 return Create(&content[0], content.size()); | |
| 177 } | |
| 178 | |
| 179 void FileStorage::ReadFile(std::string& content, | |
| 180 const std::string& uuid) const | |
| 181 { | |
| 182 content.clear(); | |
| 183 | |
| 184 if (HasBufferCompressor()) | |
| 185 { | |
| 186 std::string compressed; | |
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187 Toolbox::ReadFile(compressed, ToString(GetPath(uuid))); |
| 0 | 188 |
| 189 if (compressed.size() != 0) | |
| 190 { | |
| 191 compressor_->Uncompress(content, compressed); | |
| 192 } | |
| 193 } | |
| 194 else | |
| 195 { | |
| 196 Toolbox::ReadFile(content, GetPath(uuid).string()); | |
| 197 } | |
| 198 } | |
| 199 | |
| 200 | |
| 201 uintmax_t FileStorage::GetCompressedSize(const std::string& uuid) const | |
| 202 { | |
| 203 boost::filesystem::path path = GetPath(uuid); | |
| 204 return boost::filesystem::file_size(path); | |
| 205 } | |
| 206 | |
| 207 | |
| 208 | |
| 209 void FileStorage::ListAllFiles(std::set<std::string>& result) const | |
| 210 { | |
| 211 namespace fs = boost::filesystem; | |
| 212 | |
| 213 result.clear(); | |
| 214 | |
| 215 if (fs::exists(root_) && fs::is_directory(root_)) | |
| 216 { | |
| 217 for (fs::recursive_directory_iterator current(root_), end; current != end ; ++current) | |
| 218 { | |
| 219 if (fs::is_regular_file(current->status())) | |
| 220 { | |
| 221 try | |
| 222 { | |
| 223 fs::path d = current->path(); | |
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224 std::string uuid = ToString(d); |
| 0 | 225 if (Toolbox::IsUuid(uuid)) |
| 226 { | |
| 227 fs::path p0 = d.parent_path().parent_path().parent_path(); | |
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228 std::string p1 = ToString(d.parent_path().parent_path()); |
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229 std::string p2 = ToString(d.parent_path()); |
| 0 | 230 if (p1.length() == 2 && |
| 231 p2.length() == 2 && | |
| 232 p1 == uuid.substr(0, 2) && | |
| 233 p2 == uuid.substr(2, 2) && | |
| 234 p0 == root_) | |
| 235 { | |
| 236 result.insert(uuid); | |
| 237 } | |
| 238 } | |
| 239 } | |
| 240 catch (fs::filesystem_error) | |
| 241 { | |
| 242 } | |
| 243 } | |
| 244 } | |
| 245 } | |
| 246 } | |
| 247 | |
| 248 | |
| 249 void FileStorage::Clear() | |
| 250 { | |
| 251 namespace fs = boost::filesystem; | |
| 252 typedef std::set<std::string> List; | |
| 253 | |
| 254 List result; | |
| 255 ListAllFiles(result); | |
| 256 | |
| 257 for (List::const_iterator it = result.begin(); it != result.end(); it++) | |
| 258 { | |
| 259 Remove(*it); | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 | |
| 264 void FileStorage::Remove(const std::string& uuid) | |
| 265 { | |
| 266 namespace fs = boost::filesystem; | |
| 267 | |
| 268 fs::path p = GetPath(uuid); | |
| 269 fs::remove(p); | |
| 270 | |
| 271 // Remove the two parent directories, ignoring the error code if | |
| 272 // these directories are not empty | |
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273 |
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parents:
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274 #if BOOST_HAS_FILESYSTEM_V3 == 1 |
| 0 | 275 boost::system::error_code err; |
| 276 fs::remove(p.parent_path(), err); | |
| 277 fs::remove(p.parent_path().parent_path(), err); | |
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278 #else |
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279 fs::remove(p.parent_path()); |
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280 fs::remove(p.parent_path().parent_path()); |
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281 #endif |
| 0 | 282 } |
| 283 | |
| 284 | |
| 285 uintmax_t FileStorage::GetCapacity() const | |
| 286 { | |
| 287 return boost::filesystem::space(root_).capacity; | |
| 288 } | |
| 289 | |
| 290 uintmax_t FileStorage::GetAvailableSpace() const | |
| 291 { | |
| 292 return boost::filesystem::space(root_).available; | |
| 293 } | |
| 294 } |