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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2020 (original work) Open Assessment Technologies SA; |
| 19 | */ |
| 20 | |
| 21 | namespace oat\taoRevision\model; |
| 22 | |
| 23 | use common_Exception; |
| 24 | use common_Logger; |
| 25 | use oat\generis\model\fileReference\FileReferenceSerializer; |
| 26 | use oat\generis\model\GenerisRdf; |
| 27 | use oat\generis\model\OntologyAwareTrait; |
| 28 | use oat\generis\model\OntologyRdfs; |
| 29 | use oat\oatbox\filesystem\Directory; |
| 30 | use oat\oatbox\filesystem\File; |
| 31 | use oat\oatbox\filesystem\FileSystemService; |
| 32 | use oat\oatbox\service\ConfigurableService; |
| 33 | use core_kernel_classes_ContainerCollection as TriplesCollection; |
| 34 | use core_kernel_classes_Resource as Resource; |
| 35 | use core_kernel_classes_Triple as Triple; |
| 36 | use core_kernel_persistence_smoothsql_SmoothModel as Model; |
| 37 | use oat\taoMediaManager\model\fileManagement\FileSourceSerializer; |
| 38 | use oat\taoMediaManager\model\MediaService; |
| 39 | |
| 40 | /** |
| 41 | * Class TriplesManagerService |
| 42 | * @package oat\taoRevision\model |
| 43 | */ |
| 44 | class TriplesManagerService extends ConfigurableService |
| 45 | { |
| 46 | use OntologyAwareTrait; |
| 47 | |
| 48 | public const SERVICE_ID = 'taoRevision/triples'; |
| 49 | |
| 50 | /** |
| 51 | * @return FileReferenceSerializer |
| 52 | */ |
| 53 | protected function getFileRefSerializer() |
| 54 | { |
| 55 | return $this->getServiceLocator()->get(FileReferenceSerializer::SERVICE_ID); |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * @param Triple $triple |
| 60 | */ |
| 61 | public function deleteTripleDependencies(Triple $triple) |
| 62 | { |
| 63 | if (!$this->isFileReference($triple)) { |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | $referencer = $this->getFileRefSerializer(); |
| 68 | $this->serializeAsset($triple); |
| 69 | $source = $referencer->unserialize($triple->object); |
| 70 | |
| 71 | if ($source instanceof Directory) { |
| 72 | $source->deleteSelf(); |
| 73 | } elseif ($source instanceof File) { |
| 74 | $source->delete(); |
| 75 | } |
| 76 | |
| 77 | $referencer->cleanUp($triple->object); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * @param Resource $resource |
| 82 | * @param Model|null $model |
| 83 | */ |
| 84 | public function deleteTriplesFor(Resource $resource, Model $model = null) |
| 85 | { |
| 86 | $triples = $model |
| 87 | ? $model->getRdfsInterface()->getResourceImplementation()->getRdfTriples($resource) |
| 88 | : $resource->getRdfTriples(); |
| 89 | |
| 90 | foreach ($triples as $triple) { |
| 91 | $this->deleteTripleDependencies($triple); |
| 92 | } |
| 93 | |
| 94 | $resource->delete(); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * @param TriplesCollection $triples |
| 99 | * @param array $propertyFilesystemMap |
| 100 | * |
| 101 | * @return array |
| 102 | * @throws common_Exception |
| 103 | */ |
| 104 | public function cloneTriples(TriplesCollection $triples, array $propertyFilesystemMap = []) |
| 105 | { |
| 106 | $clones = []; |
| 107 | foreach ($triples as $original) { |
| 108 | $triple = clone $original; |
| 109 | if ($this->isFileReference($triple)) { |
| 110 | $targetFileSystem = $propertyFilesystemMap[$triple->predicate] ?? null; |
| 111 | $this->serializeAsset($triple); |
| 112 | $triple->object = $this->cloneFile($triple->object, $targetFileSystem); |
| 113 | } |
| 114 | $clones[] = $triple; |
| 115 | } |
| 116 | |
| 117 | return $clones; |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * @param $fileUri |
| 122 | * @param null $targetFileSystemId |
| 123 | * |
| 124 | * @return string |
| 125 | * @throws \common_Exception |
| 126 | * @throws \tao_models_classes_FileNotFoundException |
| 127 | */ |
| 128 | protected function cloneFile($fileUri, $targetFileSystemId = null) |
| 129 | { |
| 130 | $referencer = $this->getFileRefSerializer(); |
| 131 | $flySystemService = $this->getServiceLocator()->get(FileSystemService::SERVICE_ID); |
| 132 | |
| 133 | $source = $referencer->unserialize($fileUri); |
| 134 | $targetFileSystemId = !$targetFileSystemId ? $source->getFileSystemId() : $targetFileSystemId; |
| 135 | $destinationPath = $flySystemService->getDirectory($targetFileSystemId)->getDirectory(uniqid('', true)); |
| 136 | |
| 137 | if ($source instanceof Directory) { |
| 138 | common_Logger::i('clone directory ' . $fileUri); |
| 139 | foreach ($source->getFlyIterator(Directory::ITERATOR_FILE | Directory::ITERATOR_RECURSIVE) as $file) { |
| 140 | $destinationPath->getFile($source->getRelPath($file))->write($file->readStream()); |
| 141 | } |
| 142 | $destination = $destinationPath; |
| 143 | } elseif ($source instanceof File) { |
| 144 | common_Logger::i('clone file ' . $fileUri); |
| 145 | $destination = $destinationPath->getFile($source->getBasename()); |
| 146 | $destination->write($source->readStream()); |
| 147 | } |
| 148 | |
| 149 | return $referencer->serialize($destination); |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * @param TriplesCollection $triples |
| 154 | * |
| 155 | * @return array |
| 156 | */ |
| 157 | public function getPropertyStorageMap(TriplesCollection $triples) |
| 158 | { |
| 159 | $map = []; |
| 160 | |
| 161 | foreach ($triples as $triple) { |
| 162 | if ($this->isFileReference($triple)) { |
| 163 | $this->serializeAsset($triple); |
| 164 | $source = $this->getFileRefSerializer()->unserialize($triple->object); |
| 165 | $map[$triple->predicate] = $source->getFileSystemId(); |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | return $map; |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * @param Triple $triple |
| 174 | * |
| 175 | * @return bool |
| 176 | */ |
| 177 | protected function isFileReference(Triple $triple) |
| 178 | { |
| 179 | $property = $this->getProperty($triple->predicate); |
| 180 | $range = $property->getRange(); |
| 181 | |
| 182 | $uri = $property->getUri(); |
| 183 | |
| 184 | if ($uri == MediaService::PROPERTY_LINK) { |
| 185 | return true; |
| 186 | } |
| 187 | |
| 188 | if ($range === null) { |
| 189 | return false; |
| 190 | } |
| 191 | |
| 192 | switch ($range->getUri()) { |
| 193 | case GenerisRdf::CLASS_GENERIS_FILE: |
| 194 | return true; |
| 195 | case OntologyRdfs::RDFS_RESOURCE: |
| 196 | $object = $this->getResource($triple->object); |
| 197 | return $object->hasType($this->getClass(GenerisRdf::CLASS_GENERIS_FILE)); |
| 198 | default: |
| 199 | return false; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | private function serializeAsset(Triple $triple): void |
| 204 | { |
| 205 | $this->getFileSourceSerializer()->serialize($triple); |
| 206 | } |
| 207 | |
| 208 | private function getFileSourceSerializer(): FileSourceSerializer |
| 209 | { |
| 210 | return $this->getServiceLocator()->get(FileSourceSerializer::class); |
| 211 | } |
| 212 | } |