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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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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 $limit |
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* |
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* @return \DateTime |
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*/ |
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public function import($limit = 100) |
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{ |
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$importDate = new \DateTime(); |
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$this->logger->info('Import started at {importDate}', ['importDate' => $importDate]); |
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$offset = 0; |
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while ([] !== $readerModels = $this->reader->getModels($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, $importDate); |
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$offset += $limit; |
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} |
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$this->writer->removeAllOutdated($importDate); |
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$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 ReaderModelInterface[]|array $readerModels |
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* @param \DateTime $importDate |
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*/ |
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protected function importModels(array $readerModels, \DateTime $importDate) |
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{ |
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foreach ($readerModels as $readerModel) { |
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$this->importModel($readerModel, $importDate); |
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} |
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$this->writer->flush(); |
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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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protected function importModel(ReaderModelInterface $readerModel, \DateTime $importDate) |
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{ |
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$writerModel = $this->writer->find($readerModel); |
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if (null === $writerModel) { |
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$writerModel = $this->writer->create($readerModel); |
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$this->modelInfo($readerModel, 'created'); |
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} else { |
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$this->writer->update($writerModel, $readerModel); |
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$this->modelInfo($readerModel, 'updated'); |
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} |
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$writerModel->setReaderIdentifier($readerModel->getIdentifier()); |
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$writerModel->setLastImportDate($importDate); |
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$this->writer->persist($writerModel); |
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$this->modelInfo($readerModel, 'persisted'); |
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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 reader identifier {readerIdentifier}', |
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['readerIdentifier' => $readerModel->getIdentifier()] |
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); |
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} |
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} |
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saxulum /
saxulum-model-importer
