/**
* Incoming log entries from the filter chain
*
* @param LogEntriesEvent $event
*/
public function onProcess(LogEntriesEvent $event)
{
$endpointPattern = $this->getEndpointPattern();
$event->setLogEntries(array_filter($event->getLogEntries(), function (LogEntry $logEntry) use($endpointPattern) {
$matches = [];
preg_match($endpointPattern, $logEntry->getRequest(), $matches);
return count($matches) > 0;
}));
}
/**
* Incoming log entries from the filter chain
*
* @param LogEntriesEvent $event object containing the log entries
*/
public function onProcess(LogEntriesEvent $event)
{
$window = $this->window;
$latestTimestamp = 0;
// loop through the new log entries (normally just one)
foreach ($event->getLogEntries() as $logEntry) {
$blocked = false;
$latestTimestamp = $logEntry->getTimestamp() > $latestTimestamp ? $logEntry->getTimestamp() : $latestTimestamp;
foreach ($this->blockedLogEntries as $blockedLogEntry) {
if ($blockedLogEntry->getHost() == $logEntry->getHost()) {
$blocked = true;
break;
}
}
if (!$blocked) {
$this->withheldLogEntries[] = $logEntry;
$logEntries = array_filter($this->withheldLogEntries, function (LogEntry $withheld) use($logEntry, $window) {
return $withheld->getHost() == $logEntry->getHost() && $withheld->getTimestamp() > $logEntry->getTimestamp() - $window;
});
if (count($logEntries) > $this->maxHits) {
$this->blockHost($logEntry);
}
}
}
// decide which log entries get passed along the filter chain, and which will be withheld
$passOnLogEntries = [];
$newWithheldLogEntries = [];
if ($event->shouldFlush()) {
$passOnLogEntries = $this->withheldLogEntries;
} else {
foreach ($this->withheldLogEntries as $logEntry) {
if ($logEntry->getTimestamp() > $latestTimestamp - $window) {
$newWithheldLogEntries[] = $logEntry;
} else {
$passOnLogEntries[] = $logEntry;
}
}
}
$this->withheldLogEntries = $newWithheldLogEntries;
$event->setLogEntries($passOnLogEntries);
}
