public function maintenanceCompress()
{
$perIteration = 100;
$alreadyCompressedCounter = 0;
$overallCounter = 0;
$list = new Version\Listing();
$list->setCondition("date < " . (time() - 86400 * 30));
$list->setOrderKey("date");
$list->setOrder("DESC");
$list->setLimit($perIteration);
$total = $list->getTotalCount();
$iterations = ceil($total / $perIteration);
for ($i = 0; $i < $iterations; $i++) {
Logger::debug("iteration " . ($i + 1) . " of " . $iterations);
$list->setOffset($i * $perIteration);
$versions = $list->load();
foreach ($versions as $version) {
$overallCounter++;
if (file_exists($version->getFilePath())) {
gzcompressfile($version->getFilePath(), 9);
@unlink($version->getFilePath());
$alreadyCompressedCounter = 0;
Logger::debug("version compressed:" . $version->getFilePath());
} else {
$alreadyCompressedCounter++;
}
if ($overallCounter % 10 == 0) {
Logger::debug("Waiting 5 secs to not kill the server...");
sleep(5);
}
}
\Pimcore::collectGarbage();
// check here how many already compressed versions we've found so far, if over 100 skip here
// this is necessary to keep the load on the system low
// is would be very unusual that older versions are not already compressed, so we assume that only new
// versions need to be compressed, that's not perfect but a compromise we can (hopefully) live with.
if ($alreadyCompressedCounter > 100) {
Logger::debug("Over " . $alreadyCompressedCounter . " versions were already compressed before, it doesn't seem that there are still uncompressed versions in the past, skip...");
return;
}
}
}