You can also play extractor tricks here:
object MyExceptionLogger {
def unapply(in: (Props.RunModes.Value, Req, Throwable)):
Option[(Props.RunModes.Value, Req, Throwable)] = {
Mailer.sendMail(From("[email protected]"), Subject("You've got exception"),
To("[email protected]"), PlainMailBodyType(in._3.getMessage))
None
}
}
LiftRules.exceptionHandler.prepend{
case MyExceptionLogger(_, _, t) => throw t // this will never happen
}
What this does is it calls the unapply method on MyExceptionLogger which has
the side effect of sending email about the exception, but it returns None so
the case is not applied and the testing continues.
On Thu, Jan 28, 2010 at 11:42 PM, Jeppe Nejsum Madsen <[email protected]>wrote:
> Yu-Shan Fung <[email protected]> writes:
>
> > Hi All,
> >
> > A bit of a shot in the dark, but is there an easy way to setup email
> > notification on an lift app whenever an uncaught exception occurs? Seems
> > like a common enough use-case, just wonder if there's a standard way to
> do
> > it before I roll my own.
>
> I have it setup so that all unhandled exceptions are logged with an
> error:
>
> private def setupGlobalErrorHandler() {
> val currentHandler = LiftRules.exceptionHandler.toList.first
>
> LiftRules.exceptionHandler.prepend {
> case (Props.RunModes.Development, r, e) =>
> Log.error("Exception occurred during processing of %s.
> UserId=%s".format(r,User.currentUserId), e)
> currentHandler((Props.RunModes.Development, r, e))
> case (Props.RunModes.Production, r, e) =>
> Log.error("Exception occurred during processing of %s.
> UserId=%s".format(r,User.currentUserId), e)
> RedirectResponse("/error.html")
> }
> }
> }
>
> I then (in production) configure logback to send me emails on errors:
>
> <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
> <SMTPHost>localhost</SMTPHost>
> <To>x...@xxx</To>
> <From>y...@fyyy</From>
> <layout class="ch.qos.logback.classic.html.HTMLLayout" />
> </appender>
>
> /Jeppe
>
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