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<?php |
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namespace Storeman\VaultLayout\Amberjack; |
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use Ramsey\Uuid\Uuid; |
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use Storeman\Exception; |
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use Storeman\FileReader; |
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use Storeman\Index\Index; |
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use Storeman\Index\IndexObject; |
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use Storeman\StorageAdapter\StorageAdapterInterface; |
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use Storeman\Synchronization; |
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use Storeman\SynchronizationList; |
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use Storeman\Config\VaultConfiguration; |
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use Storeman\VaultLayout\LazyLoadedIndex; |
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use Storeman\VaultLayout\VaultLayoutInterface; |
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class AmberjackVaultLayout implements VaultLayoutInterface |
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{ |
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protected const SYNCHRONIZATION_LIST_FILE_NAME = 'sync.log'; |
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/** |
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* @var StorageAdapterInterface |
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*/ |
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protected $storageAdapter; |
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/** |
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* @var VaultConfiguration |
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*/ |
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protected $vaultConfiguration; |
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public function __construct(StorageAdapterInterface $storageAdapter, VaultConfiguration $vaultConfiguration) |
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{ |
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$this->storageAdapter = $storageAdapter; |
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$this->vaultConfiguration = $vaultConfiguration; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getSynchronizations(): SynchronizationList |
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{ |
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if ($this->storageAdapter->exists(static::SYNCHRONIZATION_LIST_FILE_NAME)) |
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{ |
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$stream = $this->storageAdapter->getReadStream(static::SYNCHRONIZATION_LIST_FILE_NAME); |
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stream_filter_append($stream, 'zlib.inflate', STREAM_FILTER_READ); |
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$list = new SynchronizationList(); |
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while (is_array($row = fgetcsv($stream))) |
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{ |
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$synchronization = Synchronization::fromScalarArray($row); |
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$synchronization->setIndex(new LazyLoadedIndex(function() use ($synchronization) { |
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return $this->readIndex($synchronization); |
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})); |
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$list->addSynchronization($synchronization); |
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} |
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if (!feof($stream)) |
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{ |
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throw new Exception("Corrupt synchronization list detected"); |
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} |
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fclose($stream); |
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return $list; |
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} |
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return new SynchronizationList(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getLastSynchronization(): ?Synchronization |
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{ |
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return $this->getSynchronizations()->getLastSynchronization(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getSynchronization(int $revision): Synchronization |
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{ |
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return $this->getSynchronizations()->getSynchronization($revision); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function readBlob(string $blobId) |
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{ |
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$stream = $this->storageAdapter->getReadStream($blobId); |
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return $stream; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function writeSynchronization(Synchronization $synchronization, FileReader $fileReader) |
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{ |
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foreach ($synchronization->getIndex() as $indexObject) |
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{ |
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/** @var IndexObject $indexObject */ |
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if ($indexObject->isFile() && $indexObject->getBlobId() === null) |
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{ |
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$indexObject->setBlobId($this->generateNewBlobId($synchronization->getIndex())); |
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$this->storageAdapter->writeStream($indexObject->getBlobId(), $fileReader->getReadStream($indexObject)); |
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} |
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} |
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$this->writeIndex($synchronization); |
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$synchronizationList = $this->getSynchronizations(); |
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$synchronizationList->addSynchronization($synchronization); |
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$this->writeSynchronizationList($synchronizationList); |
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} |
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protected function readIndex(Synchronization $synchronization): Index |
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{ |
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$stream = $this->storageAdapter->getReadStream($this->getIndexFileName($synchronization)); |
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stream_filter_append($stream, 'zlib.inflate'); |
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$index = new Index(); |
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while (($row = fgetcsv($stream)) !== false) |
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{ |
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$index->addObject(IndexObject::fromScalarArray($row)); |
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} |
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fclose($stream); |
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return $index; |
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} |
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protected function writeIndex(Synchronization $synchronization) |
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{ |
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// write to local temp file |
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$stream = tmpfile(); |
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$filterHandle = stream_filter_append($stream, 'zlib.deflate', STREAM_FILTER_WRITE); |
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foreach ($synchronization->getIndex() as $object) |
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{ |
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/** @var IndexObject $object */ |
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if (fputcsv($stream, $object->toScalarArray()) === false) |
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{ |
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throw new \RuntimeException(); |
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} |
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} |
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stream_filter_remove($filterHandle); |
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rewind($stream); |
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// upload local file to vault |
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$this->storageAdapter->writeStream($this->getIndexFileName($synchronization), $stream); |
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fclose($stream); |
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} |
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protected function writeSynchronizationList(SynchronizationList $synchronizationList) |
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{ |
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// write to local temp file |
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$stream = tmpfile(); |
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$filterHandle = stream_filter_append($stream, 'zlib.deflate', STREAM_FILTER_WRITE); |
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foreach ($synchronizationList as $synchronization) |
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{ |
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/** @var Synchronization $synchronization */ |
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if (fputcsv($stream, $synchronization->toScalarArray()) === false) |
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{ |
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throw new \RuntimeException(); |
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} |
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} |
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stream_filter_remove($filterHandle); |
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rewind($stream); |
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// upload local file to vault |
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$this->storageAdapter->writeStream(static::SYNCHRONIZATION_LIST_FILE_NAME, $stream); |
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fclose($stream); |
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} |
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protected function generateNewBlobId(Index $index = null): string |
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{ |
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do |
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{ |
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$blobId = Uuid::uuid4()->toString(); |
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} |
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while (($index && $index->getObjectByBlobId($blobId)) || $this->storageAdapter->exists($blobId)); |
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return $blobId; |
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} |
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protected function getIndexFileName(Synchronization $synchronization): string |
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{ |
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return "index_{$synchronization->getRevision()}"; |
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} |
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} |
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storeman-io /
storeman
