/**
* Exports es index to provided file.
*
* @param Manager $manager
* @param string $filename
* @param int $chunkSize
* @param OutputInterface $output
*/
public function exportIndex(Manager $manager, $filename, $chunkSize, OutputInterface $output)
{
$types = $manager->getTypesMapping();
$repo = $manager->getRepository($types);
$results = $this->getResults($repo, $chunkSize);
if (class_exists('\\Symfony\\Component\\Console\\Helper\\ProgressBar')) {
$progress = new ProgressBar($output, $results->getTotalCount());
$progress->setRedrawFrequency(100);
$progress->start();
} else {
$progress = new ProgressHelper();
$progress->setRedrawFrequency(100);
$progress->start($output, $results->getTotalCount());
}
$metadata = ['count' => $results->getTotalCount(), 'date' => date(\DateTime::ISO8601)];
$writer = $this->getWriter($this->getFilePath($filename), $metadata);
foreach ($results as $data) {
$writer->push(array_intersect_key($data, array_flip(['_id', '_type', '_source'])));
$progress->advance();
}
$writer->finalize();
$progress->finish();
$output->writeln('');
}