Mercurial > hg > orthanc-object-storage
annotate Azure/AzureBlobStoragePlugin.cpp @ 68:58a03fce4897
new option for AWS: EnableLegacyUnknownFiles
| author | Alain Mazy <am@osimis.io> |
|---|---|
| date | Fri, 09 Jul 2021 15:40:07 +0200 |
| parents | b922ae86bbe1 |
| children | 16e419fe80c5 |
| rev | line source |
|---|---|
| 1 | 1 /** |
| 2 * Cloud storage plugins for Orthanc | |
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium |
| 1 | 4 * |
| 5 * This program is free software: you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Affero General Public License | |
| 7 * as published by the Free Software Foundation, either version 3 of | |
| 8 * the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, but | |
| 11 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Affero General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Affero General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 **/ | |
| 18 | |
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19 |
| 1 | 20 #include "AzureBlobStoragePlugin.h" |
| 21 | |
| 22 #include <was/storage_account.h> | |
| 23 #include <was/blob.h> | |
| 24 #include <boost/lexical_cast.hpp> | |
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25 #include <boost/algorithm/string.hpp> |
| 1 | 26 #include "cpprest/rawptrstream.h" |
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27 #include "cpprest/details/basic_types.h" |
| 1 | 28 |
| 29 | |
| 30 // Create aliases to make the code easier to read. | |
| 31 namespace as = azure::storage; | |
| 15 | 32 static const char* const PLUGIN_SECTION = "AzureBlobStorage"; |
| 1 | 33 |
| 15 | 34 class AzureBlobStoragePlugin : public BaseStoragePlugin |
| 1 | 35 { |
| 36 public: | |
| 37 | |
| 38 as::cloud_blob_client blobClient_; | |
| 39 as::cloud_blob_container blobContainer_; | |
| 40 public: | |
| 41 | |
| 42 // AzureBlobStoragePlugin(const std::string& connectionString, | |
| 43 // const std::string& containerName | |
| 44 // ); | |
| 15 | 45 AzureBlobStoragePlugin(const as::cloud_blob_client& blobClient, const as::cloud_blob_container& blobContainer, bool enableLegacyStorageStructure); |
| 1 | 46 |
| 47 virtual IWriter* GetWriterForObject(const char* uuid, OrthancPluginContentType type, bool encryptionEnabled); | |
| 48 virtual IReader* GetReaderForObject(const char* uuid, OrthancPluginContentType type, bool encryptionEnabled); | |
| 49 virtual void DeleteObject(const char* uuid, OrthancPluginContentType type, bool encryptionEnabled); | |
| 15 | 50 virtual const char* GetConfigurationSectionName() {return PLUGIN_SECTION;}; |
| 1 | 51 }; |
| 52 | |
| 53 | |
| 54 class Writer : public IStoragePlugin::IWriter | |
| 55 { | |
| 56 std::string path_; | |
| 57 as::cloud_blob_client client_; | |
| 58 as::cloud_blob_container container_; | |
| 59 | |
| 60 public: | |
| 61 Writer(const as::cloud_blob_container& container, const std::string& path, const as::cloud_blob_client& client) | |
| 62 : path_(path), | |
| 63 client_(client), | |
| 64 container_(container) | |
| 65 { | |
| 66 } | |
| 67 | |
| 68 virtual ~Writer() | |
| 69 { | |
| 70 } | |
| 71 | |
| 72 virtual void Write(const char* data, size_t size) | |
| 73 { | |
| 74 try | |
| 75 { | |
| 76 concurrency::streams::istream inputStream = concurrency::streams::rawptr_stream<uint8_t>::open_istream(reinterpret_cast<const uint8_t*>(data), size); | |
| 34 | 77 azure::storage::cloud_block_blob blob = container_.get_block_blob_reference(utility::conversions::to_string_t(path_)); |
| 1 | 78 blob.upload_from_stream(inputStream); |
| 79 inputStream.close().wait(); | |
| 80 } | |
| 81 catch (std::exception& ex) | |
| 82 { | |
| 83 throw StoragePluginException("AzureBlobStorage: error writing file " + std::string(path_) + ": " + ex.what()); | |
| 84 } | |
| 85 } | |
| 86 }; | |
| 87 | |
| 88 | |
| 89 class Reader : public IStoragePlugin::IReader | |
| 90 { | |
| 91 std::string path_; | |
| 92 as::cloud_blob_client client_; | |
| 93 as::cloud_blob_container container_; | |
| 94 as::cloud_block_blob block_; | |
| 95 | |
| 96 public: | |
| 97 Reader(const as::cloud_blob_container& container, const std::string& path, const as::cloud_blob_client& client) | |
| 98 : path_(path), | |
| 99 client_(client), | |
| 100 container_(container) | |
| 101 { | |
| 102 try | |
| 103 { | |
| 34 | 104 block_ = container_.get_block_blob_reference(utility::conversions::to_string_t(path_)); |
| 1 | 105 block_.download_attributes(); // to retrieve the properties |
| 106 } | |
| 107 catch (std::exception& ex) | |
| 108 { | |
| 109 throw StoragePluginException("AzureBlobStorage: error opening file for reading " + std::string(path_) + ": " + ex.what()); | |
| 110 } | |
| 111 } | |
| 112 | |
| 113 virtual ~Reader() | |
| 114 { | |
| 115 | |
| 116 } | |
| 117 virtual size_t GetSize() | |
| 118 { | |
| 119 try | |
| 120 { | |
| 121 return block_.properties().size(); | |
| 122 } | |
| 123 catch (std::exception& ex) | |
| 124 { | |
| 125 throw StoragePluginException("AzureBlobStorage: error while reading file " + std::string(path_) + ": " + ex.what()); | |
| 126 } | |
| 127 } | |
| 128 | |
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129 virtual void ReadWhole(char* data, size_t size) |
| 1 | 130 { |
| 131 try | |
| 132 { | |
| 133 concurrency::streams::ostream outputStream = concurrency::streams::rawptr_stream<uint8_t>::open_ostream(reinterpret_cast<uint8_t*>(data), size); | |
| 134 | |
| 135 block_.download_to_stream(outputStream); | |
| 136 } | |
| 137 catch (std::exception& ex) | |
| 138 { | |
| 139 throw StoragePluginException("AzureBlobStorage: error while reading file " + std::string(path_) + ": " + ex.what()); | |
| 140 } | |
| 141 } | |
| 142 | |
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143 virtual void ReadRange(char* data, size_t size, size_t fromOffset) |
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144 { |
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145 try |
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146 { |
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147 concurrency::streams::ostream outputStream = concurrency::streams::rawptr_stream<uint8_t>::open_ostream(reinterpret_cast<uint8_t*>(data), size); |
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148 |
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149 block_.download_range_to_stream(outputStream, fromOffset, size); |
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150 } |
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151 catch (std::exception& ex) |
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152 { |
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153 throw StoragePluginException("AzureBlobStorage: error while reading partial file " + std::string(path_) + ": " + ex.what()); |
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154 } |
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155 } |
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156 |
| 1 | 157 }; |
| 158 | |
| 159 | |
| 160 | |
| 161 const char* AzureBlobStoragePluginFactory::GetStoragePluginName() | |
| 162 { | |
| 163 return "Azure Blob Storage"; | |
| 164 } | |
| 165 | |
| 48 | 166 bool IsSasTokenAccountLevel(utility::string_t sasToken) |
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167 { |
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168 // Use cpprestsdk's utility::string_t here since the expected argument is the return value of |
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169 // as::storage_credentials::sas_token(), which is type utility::string_t |
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170 size_t newIdx = 0; |
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171 size_t prevIdx = 0; |
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172 while ((newIdx = sasToken.find('&', prevIdx)) != utility::string_t::npos) |
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173 { |
| 48 | 174 utility::string_t kvpair = sasToken.substr(prevIdx, newIdx - prevIdx); |
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175 prevIdx = newIdx + 1; // start next time from char after '&' |
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176 |
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177 size_t equalsIdx = kvpair.find('='); |
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178 utility::string_t key = kvpair.substr(0, equalsIdx); |
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179 if (key == "srt") // only account SAS has this parameter |
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180 return true; |
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181 } |
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182 |
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183 return false; |
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184 } |
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185 |
| 1 | 186 IStoragePlugin* AzureBlobStoragePluginFactory::CreateStoragePlugin(const OrthancPlugins::OrthancConfiguration& orthancConfig) |
| 187 { | |
| 188 std::string connectionString; | |
| 189 std::string containerName; | |
| 15 | 190 bool enableLegacyStorageStructure; |
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191 bool createContainerIfNotExists; |
| 1 | 192 |
| 193 if (orthancConfig.IsSection(PLUGIN_SECTION)) | |
| 194 { | |
| 195 OrthancPlugins::OrthancConfiguration pluginSection; | |
| 196 orthancConfig.GetSection(pluginSection, PLUGIN_SECTION); | |
| 197 | |
| 15 | 198 if (!BaseStoragePlugin::ReadCommonConfiguration(enableLegacyStorageStructure, pluginSection)) |
| 199 { | |
| 200 return nullptr; | |
| 201 } | |
| 202 | |
| 1 | 203 if (!pluginSection.LookupStringValue(connectionString, "ConnectionString")) |
| 204 { | |
| 205 OrthancPlugins::LogError("AzureBlobStorage/ConnectionString configuration missing. Unable to initialize plugin"); | |
| 206 return nullptr; | |
| 207 } | |
| 208 | |
| 209 if (!pluginSection.LookupStringValue(containerName, "ContainerName")) | |
| 210 { | |
| 211 OrthancPlugins::LogError("AzureBlobStorage/ContainerName configuration missing. Unable to initialize plugin"); | |
| 212 return nullptr; | |
| 213 } | |
| 214 | |
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215 boost::trim(connectionString); // without that, if there's an EOL in the string, it fails with "provided uri is invalid" |
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216 boost::trim(containerName); |
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217 |
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218 createContainerIfNotExists = pluginSection.GetBooleanValue("CreateContainerIfNotExists", true); |
| 1 | 219 } |
| 220 else if (orthancConfig.IsSection("BlobStorage")) // backward compatibility with the old plugin: | |
| 221 { | |
| 222 OrthancPlugins::LogWarning("AzureBlobStorage: you're using an old configuration format for the plugin."); | |
| 223 | |
| 224 OrthancPlugins::OrthancConfiguration pluginSection; | |
| 225 orthancConfig.GetSection(pluginSection, "BlobStorage"); | |
| 226 | |
| 227 std::string accountName; | |
| 228 std::string accountKey; | |
| 229 | |
| 230 if (!pluginSection.LookupStringValue(containerName, "ContainerName")) | |
| 231 { | |
| 232 OrthancPlugins::LogError("BlobStorage/AccountName configuration missing. Unable to initialize plugin"); | |
| 233 return nullptr; | |
| 234 } | |
| 235 | |
| 236 if (!pluginSection.LookupStringValue(accountName, "AccountName")) | |
| 237 { | |
| 238 OrthancPlugins::LogError("BlobStorage/AccountName configuration missing. Unable to initialize plugin"); | |
| 239 return nullptr; | |
| 240 } | |
| 241 | |
| 242 if (!pluginSection.LookupStringValue(accountKey, "AccountKey")) | |
| 243 { | |
| 244 OrthancPlugins::LogError("BlobStorage/ContainerName configuration missing. Unable to initialize plugin"); | |
| 245 return nullptr; | |
| 246 } | |
| 247 | |
| 248 std::ostringstream connectionStringBuilder; | |
| 249 connectionStringBuilder << "DefaultEndpointsProtocol=https;AccountName=" << accountName << ";AccountKey=" << accountKey; | |
| 250 connectionString = connectionStringBuilder.str(); | |
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251 |
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252 createContainerIfNotExists = pluginSection.GetBooleanValue("CreateContainerIfNotExists", true); |
| 1 | 253 } |
| 254 else | |
| 255 { | |
| 256 OrthancPlugins::LogWarning(std::string(GetStoragePluginName()) + " plugin, section missing. Plugin is not enabled."); | |
| 257 return nullptr; | |
| 258 } | |
| 259 | |
| 260 try | |
| 261 { | |
| 11 | 262 OrthancPlugins::LogInfo("Connecting to Azure storage ..."); |
| 263 | |
| 34 | 264 as::cloud_storage_account storageAccount = as::cloud_storage_account::parse(utility::conversions::to_string_t(connectionString)); |
| 11 | 265 OrthancPlugins::LogInfo("Storage account created"); |
| 1 | 266 |
| 267 as::cloud_blob_client blobClient = storageAccount.create_cloud_blob_client(); | |
| 11 | 268 OrthancPlugins::LogInfo("Blob client created"); |
| 269 | |
| 34 | 270 as::cloud_blob_container blobContainer = blobClient.get_container_reference(utility::conversions::to_string_t(containerName)); |
| 11 | 271 OrthancPlugins::LogInfo("Accessing blob container"); |
| 1 | 272 |
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273 // blobContainer.create_if_not_exists() throws an error if a service SAS (for a blob container) |
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274 // was used in the connectionString. |
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275 // Only allow the use of this function when using storage account-level credentials, whether |
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276 // through accountName/accountKey combo or account SAS. |
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277 if ((storageAccount.credentials().is_account_key() || |
| 48 | 278 (storageAccount.credentials().is_sas() && IsSasTokenAccountLevel(storageAccount.credentials().sas_token()))) |
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279 && createContainerIfNotExists) |
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280 { |
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281 // Return value is true if the container did not exist and was successfully created. |
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282 bool containerCreated = blobContainer.create_if_not_exists(); |
| 1 | 283 |
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284 if (containerCreated) |
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285 { |
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286 OrthancPlugins::LogWarning("Blob Storage Area container has been created. **** check in the Azure console that your container is private ****"); |
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287 } |
| 1 | 288 } |
| 289 | |
| 290 OrthancPlugins::LogInfo("Blob storage initialized"); | |
| 291 | |
| 15 | 292 return new AzureBlobStoragePlugin(blobClient, blobContainer, enableLegacyStorageStructure); |
| 1 | 293 } |
| 294 catch (const std::exception& e) | |
| 295 { | |
| 296 OrthancPlugins::LogError(std::string("AzureBlobStorage plugin: failed to initialize plugin: ") + e.what()); | |
| 297 return nullptr; | |
| 298 } | |
| 299 | |
| 300 } | |
| 301 | |
| 15 | 302 AzureBlobStoragePlugin::AzureBlobStoragePlugin(const as::cloud_blob_client& blobClient, const as::cloud_blob_container& blobContainer, bool enableLegacyStorageStructure) |
| 303 : BaseStoragePlugin(enableLegacyStorageStructure), | |
| 304 blobClient_(blobClient), | |
| 1 | 305 blobContainer_(blobContainer) |
| 306 { | |
| 307 | |
| 308 } | |
| 309 | |
| 310 IStoragePlugin::IWriter* AzureBlobStoragePlugin::GetWriterForObject(const char* uuid, OrthancPluginContentType type, bool encryptionEnabled) | |
| 311 { | |
| 312 return new Writer(blobContainer_, GetPath(uuid, type, encryptionEnabled), blobClient_); | |
| 313 } | |
| 314 | |
| 315 IStoragePlugin::IReader* AzureBlobStoragePlugin::GetReaderForObject(const char* uuid, OrthancPluginContentType type, bool encryptionEnabled) | |
| 316 { | |
| 317 return new Reader(blobContainer_, GetPath(uuid, type, encryptionEnabled), blobClient_); | |
| 318 } | |
| 319 | |
| 320 void AzureBlobStoragePlugin::DeleteObject(const char* uuid, OrthancPluginContentType type, bool encryptionEnabled) | |
| 321 { | |
| 322 std::string path = GetPath(uuid, type, encryptionEnabled); | |
| 323 | |
| 324 try | |
| 325 { | |
| 34 | 326 as::cloud_block_blob blockBlob = blobContainer_.get_block_blob_reference(utility::conversions::to_string_t(path)); |
| 1 | 327 |
| 328 blockBlob.delete_blob(); | |
| 329 } | |
| 330 catch (std::exception& ex) | |
| 331 { | |
| 332 throw StoragePluginException("AzureBlobStorage: error while deleting file " + std::string(path) + ": " + ex.what()); | |
| 333 } | |
| 334 } |