Memory Issue PdfDataExtractor

[solverat]

Q	A
Bug report?	yes
Feature request?	no
BC Break report?	no
RFC?	no

If you're dealing with hundreds/thousands of asset documents (PDF), the asset method getLocalFile will fail ([PHP Warning: exec() unable to fork because a lot of resource streams will be processed.

pimcore-dynamic-search-data-provider-trinity/src/DsTrinityDataBundle/Resource/FieldTransformer/Asset/PdfDataExtractor.php

Lines 59 to 60 in 5fd373a

	$cmd = sprintf('%s "%s" "%s"', $verboseCommand, $data->getLocalFile(), $tmpFile);
	exec($pdfToTextBin . ' ' . $cmd);

Fetching the full path like in the example below could be a solution, but it won't work if the assets are stored on an asset storage server for example.

$tmpFile = sprintf('%s%s%s.text', $assetTmpDir, DIRECTORY_SEPARATOR, uniqid('t2p-', false));
$verboseCommand = !\Pimcore::inDebugMode() ? '-q' : '';
$cmd = sprintf('%s "%s/public/var/assets%s" "%s"', $verboseCommand, $this->projectDir, $data->getRealFullPath(), $tmpFile);

try {
    exec($pdfToTextBin . ' ' . $cmd);
} catch (\Exception $e) {
    return null;
}