Option to disable syslog() call about bugsnag-php

[alcohol]

Ah, did not think of that myself. Cheers, that's an acceptable alternative.

[yousif-bugsnag]

Hi @alcohol, thanks for the suggestion! Can you tell us a little more about why you think this feature would be useful? For example are you getting spammed with large numbers of these log messages?

[alcohol]

Yeah, unfortunately. My client has a legacy application that needs a lot of patching and fixing, and this noise is making it a bit awkward to spot other issues.

We only discard the following classes in my client's codebase:

- Symfony\Component\HttpKernel\Exception\NotFoundHttpException
- Symfony\Component\Security\Core\Exception\AccessDeniedException
- Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException

But if I peek at the log of the php-fpm service on our servers using journalctl I basically just see a flood of these:

Mar 03 09:49:08 <hostname> php-fpm8.1[1442507]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:49:08 <hostname> php-fpm8.1[1442640]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:49:38 <hostname> php-fpm8.1[1443398]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:49:38 <hostname> php-fpm8.1[1442843]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:49:40 <hostname> php-fpm8.1[1443398]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:49:54 <hostname> php-fpm8.1[1443620]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:49:54 <hostname> php-fpm8.1[1443398]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:49:54 <hostname> php-fpm8.1[1442640]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:50:02 <hostname> php-fpm8.1[1442507]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:50:03 <hostname> php-fpm8.1[1442843]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:03 <hostname> php-fpm8.1[1442640]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:04 <hostname> php-fpm8.1[1442507]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:04 <hostname> php-fpm8.1[1443620]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:04 <hostname> php-fpm8.1[1443398]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:04 <hostname> php-fpm8.1[1442843]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:04 <hostname> php-fpm8.1[1443620]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:04 <hostname> php-fpm8.1[1442508]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:08 <hostname> php-fpm8.1[1442650]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:50:08 <hostname> php-fpm8.1[1443620]: ool fpm: Discarding event because error class "Symfony\Component\HttpKernel\Exception\NotFoundHttpException" matched discardClasses configuration
Mar 03 09:50:10 <hostname> php-fpm8.1[1442843]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:10 <hostname> php-fpm8.1[1442507]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:11 <hostname> php-fpm8.1[1443887]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration
Mar 03 09:50:11 <hostname> php-fpm8.1[1442843]: ool fpm: Discarding event because error class "Symfony\Component\Security\Core\Exception\AccessDeniedException" matched discardClasses configuration

[yousif-bugsnag]

Got it, thanks for the additional details. You should be able to achieve that by removing your discardClasses configuration and instead registering your own callback to check for and discard these errors without the syslog call.

The callback gets added to the middleware pipeline and is passed a $report object so you could do something similar to the internal middleware implementation and simply return false from the callback to discard the report:

bugsnag-php/src/Middleware/DiscardClasses.php

Lines 31 to 46 in ad2b40b

	$errors = $report->getErrors();
	foreach ($this->config->getDiscardClasses() as $discardClass) {
	foreach ($errors as $error) {
	if ($error['errorClass'] === $discardClass
	|| @preg_match($discardClass, $error['errorClass']) === 1
	) {
	syslog(LOG_INFO, sprintf(
	'Discarding event because error class "%s" matched discardClasses configuration',
	$error['errorClass']
	));
	return;
	}
	}
	}