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<?php |
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namespace Zenstruck\ElasticaBundle\Elastica; |
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use Elastica\Document; |
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use Elastica\Index; |
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use Elastica\Type; |
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use Psr\Log\LoggerInterface; |
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use Zenstruck\ElasticaBundle\Exception\RuntimeException; |
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/** |
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* @author Kevin Bond <[email protected]> |
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*/ |
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class IndexManager |
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{ |
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const DEFAULT_CHUNK_SIZE = 500; |
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private $indexContext; |
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private $logger; |
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public function __construct(IndexContext $indexContext, LoggerInterface $logger = null) |
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{ |
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$this->indexContext = $indexContext; |
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$this->logger = $logger; |
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} |
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/** |
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* Creates and indexes the elasticsearch index. |
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* |
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* @throws RuntimeException |
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*/ |
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public function create() |
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{ |
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$indicies = $this->indexContext->getIndicies(); |
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foreach ($indicies as $index) { |
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if ($index->exists()) { |
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throw RuntimeException::indexExists($index); |
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} |
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} |
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/** @var Index $index */ |
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$index = reset($indicies); |
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$this->logInfo(sprintf('Creating index "%s".', $index->getName())); |
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$this->doCreate($index); |
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$aliasName = $this->indexContext->getAlias()->getName(); |
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$this->logInfo(sprintf('Adding alias "%s" for index "%s".', $aliasName, $index->getName())); |
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$index->addAlias($aliasName); |
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} |
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/** |
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* Reindex the elasticsearch index. |
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* |
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* @throws RuntimeException |
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*/ |
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public function reindex() |
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{ |
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$oldIndex = $this->getCurrentIndex(); |
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$newIndex = $this->getFreshIndex(); |
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$this->logInfo(sprintf('Creating new index "%s".', $newIndex->getName())); |
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$this->doCreate($newIndex); |
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$aliasName = $this->indexContext->getAlias()->getName(); |
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$this->logInfo(sprintf('Swapping alias "%s" from index "%s" to index "%s".', $aliasName, $oldIndex->getName(), $newIndex->getName())); |
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$newIndex->addAlias($aliasName); |
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$this->logInfo(sprintf('Deleting old index "%s".', $oldIndex->getName())); |
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$oldIndex->delete(); |
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} |
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/** |
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* Deletes the elasticsearch index. |
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* |
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* @throws RuntimeException |
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*/ |
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public function delete() |
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{ |
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foreach ($this->indexContext->getIndicies() as $index) { |
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$this->doDelete($index); |
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} |
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} |
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private function doDelete(Index $index) |
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{ |
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if ($index->exists()) { |
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$this->logInfo(sprintf('Deleting index "%s".', $index->getName())); |
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$index->delete(); |
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} |
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} |
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/** |
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* @param string $message |
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* @param array $context |
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*/ |
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private function logInfo($message, array $context = array()) |
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{ |
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if (null === $this->logger) { |
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return; |
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} |
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$this->logger->info($message, $context); |
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} |
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private function doCreate(Index $index) |
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{ |
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$args = array(); |
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if (null !== $settings = $this->indexContext->getSettings()) { |
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$args['settings'] = $settings; |
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} |
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$index->create($args); |
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foreach ($this->indexContext->getTypeContexts() as $typeContext) { |
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$type = new Type($index, $typeContext->getType()->getName()); |
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$this->logInfo(sprintf('Adding mapping for type "%s" on index "%s".', $type->getName(), $index->getName())); |
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$type->setMapping($typeContext->getMapping()); |
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$this->addDocumentsToType($type, $typeContext->getDocuments()); |
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} |
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} |
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/** |
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* @param Type $type |
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* @param Document[] $documents |
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*/ |
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private function addDocumentsToType(Type $type, array $documents) |
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{ |
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$total = count($documents); |
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$typeName = $type->getName(); |
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$indexName = $type->getIndex()->getName(); |
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$count = 0; |
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$this->logInfo(sprintf('Adding %d documents to type "%s" on index "%s".', $total, $typeName, $indexName)); |
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foreach (array_chunk($documents, self::DEFAULT_CHUNK_SIZE) as $chunks) { |
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$type->addDocuments($chunks); |
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$count += count($chunks); |
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$this->logInfo(sprintf('%s/%s documents added to type "%s" on index "%s".', |
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$count, |
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$total, |
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$typeName, |
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$indexName |
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)); |
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} |
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} |
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/** |
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* @return Index |
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*/ |
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private function getFreshIndex() |
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{ |
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foreach ($this->indexContext->getIndicies() as $index) { |
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if (!$index->exists()) { |
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return $index; |
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} |
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} |
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throw new RuntimeException('No unused index in rotation. Run delete and create first.'); |
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} |
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/** |
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* @return Index |
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*/ |
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private function getCurrentIndex() |
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{ |
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foreach ($this->indexContext->getIndicies() as $index) { |
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if ($index->exists()) { |
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return $index; |
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} |
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} |
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throw new RuntimeException('No active index in rotation. Run create first.'); |
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} |
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} |
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kbond /
ZenstruckElasticaBundle
