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<?php |
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namespace Nimble\ElasticBundle\Populator; |
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use Nimble\ElasticBundle\Document; |
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use Nimble\ElasticBundle\Transformer\TransformerManager; |
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use Nimble\ElasticBundle\Type\Type; |
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use Symfony\Component\Console\Helper\ProgressBar; |
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class Populator |
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{ |
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/** |
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* @var Type |
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*/ |
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private $type; |
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/** |
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* @var PopulationFetcherInterface |
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*/ |
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private $fetcher; |
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/** |
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* @var TransformerManager |
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*/ |
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private $transformer; |
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/** |
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* @var int |
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*/ |
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private $entityCount; |
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/** |
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* @param Type $type |
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* @param PopulationFetcherInterface $fetcher |
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* @param TransformerManager $transformer |
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*/ |
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public function __construct(Type $type, PopulationFetcherInterface $fetcher, TransformerManager $transformer) |
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{ |
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$this->type = $type; |
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$this->fetcher = $fetcher; |
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$this->transformer = $transformer; |
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$this->entityCount = $fetcher->getEntityCount(); |
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} |
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/** |
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* @param array $entities |
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* @return Document[] |
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*/ |
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protected function transformEntitiesToDocuments(array $entities) |
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{ |
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$documents = []; |
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foreach ($entities as $entity) { |
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$documents = array_merge($documents, $this->transformer->transformToDocuments( |
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$entity, |
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$this->type->getIndex()->getId(), |
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$this->type->getName() |
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)); |
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} |
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return $documents; |
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} |
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/** |
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* TODO: make a progress bar interface an an adapter for symfony's ProgressBar |
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* |
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* @param int $batchSize |
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* @param ProgressBar $progress |
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* @return int Number of documents created/updated. |
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*/ |
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public function populate($batchSize, ProgressBar $progress = null) |
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{ |
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$count = $this->fetcher->getEntityCount(); |
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if ($count === 0) { |
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return 0; |
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} |
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$documentCount = 0; |
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$offset = 0; |
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if (null !== $progress) { |
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$progress->start($count); |
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} |
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while ($offset < $count) { |
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$entities = $this->fetcher->fetchEntities($offset, $batchSize); |
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$batch = $this->transformEntitiesToDocuments($entities); |
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$this->type->putDocuments($batch); |
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if (null !== $progress) { |
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$progress->advance(count($entities)); |
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} |
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$documentCount += count($batch); |
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$offset += $batchSize; |
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} |
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if (null !== $progress) { |
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$progress->finish(); |
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} |
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return $documentCount; |
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} |
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} |
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NimbleCo /
NimbleElasticBundle
