onFatalException Details

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1

When Grav fires the onFatalException event, I would like to send myself a notice of the error with details. The notification works, but I can’t figure out where to grab exception details. Any ideas?

public static function getSubscribedEvents() {
    return [
        'onPageNotFound' => ['sendAlert', 0],
        'onFatalException' => ['sendAlert', 0]
    ];
}

/**
 * Convert error hook into alert mesage
 * Route message to alert mechanism (currently Slack)
 *
 * @param Event $event
 * @param string $hook
 */
public function sendAlert(Event $event, $hook) {
    $url = $this->slackFriendlyUrl($this->grav['uri']->url);
 
    if ($hook === "onPageNotFound") {
        $message = "```404: " . $url  . "```";
    } elseif ($hook === "onFatalException") {
        $message = "@channel: Grav Error :warning: ```Fatal Exception:
" . $url . "
" . $exception_string? . "```";
    } else {
        $message = "@channel: Grav Error :warning: ```Undefined Error:
" . $url . "```";
    }

$this->slackAlert($message);
}
2

To be honest i’ve not tried adding additional handlers for this event as the only place it’s currently used (that I know of) is in the problems plugin. I’m not 100% sure that even works in that instance. I think Whoops might be handling the exception before this event is even fired.

Please create an issue for this onFatalException() event here: https://github.com/getgrav/grav/issues

3

Ok, i tested this a bit today. It is working fine after all. I created an onFatalExceptionevent in my testing plugin, and debugged it. It went in there fine. I was able to log out a message no problem. What I have added is the exception is now passed to the event so you can actually know what the exception was that cause the event in the first place: https://github.com/getgrav/grav/commit/d42786484f10a9ae23820400ace35867474498e0

Then you can use it like this:

    public function onFatalException(Event $e)
    {
        $exception = $e['exception'];
        $this->grav['log']->addCritical(">>> " . $exception->getMessage());
    }
---
4

Awesome, I made those changes and it does exactly what I want it to. Also, thanks for working on the weekend.

I see that commit is on the develop branch, are you planning on adding those index.php changes to an upcoming release?

5

Yes, they will be in the next RC release.

6

Perfect. Thanks.