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<?php |
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namespace Saxulum\ModelImporter; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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use Saxulum\ModelImporter\Progress\NullProgress; |
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use Saxulum\ModelImporter\Progress\ProgressInterface; |
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class Importer |
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{ |
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/** |
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* @var ReaderInterface |
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*/ |
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protected $reader; |
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/** |
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* @var WriterInterface |
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*/ |
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protected $writer; |
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/** |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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/** |
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* @param ReaderInterface $reader |
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* @param WriterInterface $writer |
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* @param LoggerInterface $logger |
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*/ |
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public function __construct(ReaderInterface $reader, WriterInterface $writer, LoggerInterface $logger = null) |
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{ |
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$this->reader = $reader; |
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$this->writer = $writer; |
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$this->logger = null !== $logger ? $logger : new NullLogger(); |
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} |
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/** |
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* @param int $limit |
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* @param ProgressInterface|null $progress |
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* |
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* @return \DateTime |
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*/ |
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public function import($limit = 100, ProgressInterface $progress = null) |
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{ |
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$importDate = new \DateTime(); |
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$this->logger->info('Import started at {importDate}', ['importDate' => $importDate]); |
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$progress = $this->getProgress($progress); |
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$offset = 0; |
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while ([] !== $readerModels = $this->reader->getReaderModels($offset, $limit)) { |
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$this->logger->info('Read, offset: {offset}, limit: {limit}', ['offset' => $offset, 'limit' => $limit]); |
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$this->importModels($readerModels, $importDate, $progress); |
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$this->reader->clearReaderModels(); |
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$offset += $limit; |
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} |
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$this->writer->removeWriterModels($importDate); |
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$this->logger->info('Removed all outdates'); |
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return $importDate; |
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} |
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/** |
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* @param ProgressInterface|null $progress |
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* |
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* @return ProgressInterface |
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*/ |
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protected function getProgress(ProgressInterface $progress = null) |
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{ |
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if (null === $progress) { |
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$progress = new NullProgress(); |
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} |
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return $progress; |
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} |
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/** |
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* @param ReaderModelInterface[]|array $readerModels |
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* @param \DateTime $importDate |
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* @param ProgressInterface $progress |
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*/ |
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protected function importModels(array $readerModels, \DateTime $importDate, ProgressInterface $progress) |
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{ |
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$writerModels = []; |
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foreach ($readerModels as $readerModel) { |
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try { |
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$writerModels[] = $this->importModel($readerModel, $importDate); |
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} catch (NotImportableException $e) { |
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$this->logger->warning( |
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$e->getMessage(), |
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['identifier' => $readerModel->getImportIdentifier()] |
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); |
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} |
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$progress->advance(); |
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} |
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$this->writer->flushWriterModels($writerModels); |
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$this->writer->clearWriterModels(); |
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$this->logger->info('Flushed models'); |
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} |
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/** |
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* @param ReaderModelInterface $readerModel |
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* @param \DateTime $importDate |
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* |
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* @return WriterModelInterface |
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*/ |
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protected function importModel(ReaderModelInterface $readerModel, \DateTime $importDate) |
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{ |
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$writerModel = $this->writer->findWriterModel($readerModel); |
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if (null === $writerModel) { |
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$writerModel = $this->writer->createWriterModel($readerModel); |
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$this->modelInfo($readerModel, 'created'); |
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} else { |
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$this->writer->updateWriterModel($writerModel, $readerModel); |
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$this->modelInfo($readerModel, 'updated'); |
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} |
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$writerModel->setImportIdentifier($readerModel->getImportIdentifier()); |
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$writerModel->setLastImportDate($importDate); |
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$this->writer->persistWriterModel($writerModel); |
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$this->modelInfo($readerModel, 'persisted'); |
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return $writerModel; |
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} |
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/** |
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* @param ReaderModelInterface $readerModel |
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* @param string $action |
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*/ |
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protected function modelInfo(ReaderModelInterface $readerModel, $action) |
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{ |
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$this->logger->info( |
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ucfirst($action).' model with identifier {identifier}', |
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['identifier' => $readerModel->getImportIdentifier()] |
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); |
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} |
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} |
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