[undertow-dev] Undertow jboss logging redirect to logback log file and console

[Stuart Douglas]

I think this is something I should address in Undertow Core (Servlet
already has io.undertow.servlet.api.ExceptionHandler), to allow you to
register a handler that will be called if an exception propagates
outside of the handler chain.

I think there are two options:

1) HttpServerExchange.setExceptionHandler(HttpHandler handler), and
then make the exception available as an attachment on the Exchange.
2) HttpServerExchange.setExceptionHandler(ExceptionHandler handler),
where ExceptionHandler has a single method that takes the exchange and
the exception.

Thoughts?

Stuart

On Wed, Feb 8, 2017 at 7:26 AM, Steve Hu <stevehu at gmail.com> wrote:
> Hi Bill,
>
> My exception handler is the first in the chain and it captures majority of
> exceptions but this one. It is basically a try/catch block to wrap all
> handler calls and you can find the source code at
> https://github.com/networknt/light-java/blob/master/exception/src/main/java/com/networknt/exception/ExceptionHandler.java
>
> I will try to dispatch in this handler first tonight and see if it works
> based on your recommendation.
>
> Hi Miere/Kim,
>
> I am in the office now and will try both your approaches tonight on my home
> computer.
>
> Thanks a lot for your help.
>
> Steve
>
> On Tue, Feb 7, 2017 at 2:22 PM, Bill O'Neil <bill at dartalley.com> wrote:
>>
>> @Steve - If your exception handler is in the handler chain before calling
>> dispatch then an exception is thrown it might not be handled properly (I
>> think I ran into this). If you make sure you add an exception handler after
>> calling dispatch that handles Throwable.class but before your logic, you
>> should be able to catch all Exceptions. I'm not 100% positive here but this
>> seemed to work for me.
>>
>>
>> On Tue, Feb 7, 2017 at 1:48 PM, Kim Rasmussen <kr at asseco.dk> wrote:
>>>
>>> Hi,
>>>
>>> I have had success with adding the system property:
>>>
>>> -Dorg.jboss.logging.provider=slf4j
>>>
>>> A random search for this on the net revelated this page which does a good
>>> job of explaining various ways of getting it working with WildFly - I myself
>>> use Undertow embedded, so the system property is enough for me.
>>>
>>> /Kim
>>>
>>> 2017-02-07 11:55 GMT+01:00 Miere Teixeira <miere.teixeira at gmail.com>:
>>>>
>>>> Hi Steve,
>>>>
>>>> I've found myself on the same situation couple of years ago and to solve
>>>> my problem I've configured the LoggerProvider to point to
>>>> Slf4JLoggerProvider. Basically, this can be reproduced by declaring a
>>>> META-INF/services/org.jboss.logging.LoggerProvider file with
>>>> org.jboss.logging.Slf4jLoggerProvider as a value.
>>>>
>>>> I hope it helps.
>>>>
>>>> Cheers!
>>>>
>>>>
>>>> On Mon, Feb 6, 2017 at 9:09 PM Steve Hu <stevehu at gmail.com> wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> Undertow is using jboss logger to log errors and my application is
>>>>> using slf4j/logback with logback.xml config file in the classpath with
>>>>> Undertow core http server embedded. I handles most exceptions in my own
>>>>> handlers but sometimes uncaught exceptions reaches Connectors class -
>>>>> executeRootHandler method which logs the error and return 500 response code.
>>>>>
>>>>> My first question: Is there a way to redirect the logs from Undertow to
>>>>> logback logs and controlled by logback.xml? I've found some discussions
>>>>> about replacing logger in WildFly but I am using embedded Undertow core
>>>>> only.
>>>>>
>>>>> Second question: When Connectors.executeRootHandler will be called? Is
>>>>> it called when you have the following line in your handler?
>>>>>
>>>>> if (exchange.isInIoThread()) {
>>>>>      exchange.dispatch(this);
>>>>>      return;
>>>>>
>>>>> }
>>>>>
>>>>> Is there any way we can by pass this so that I can handle uncaught
>>>>> exceptions in my ExceptionHandler in the handler chain?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Steve
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> undertow-dev mailing list
>>>>> undertow-dev at lists.jboss.org
>>>>> https://lists.jboss.org/mailman/listinfo/undertow-dev
>>>>
>>>> --
>>>>
>>>> Miere Teixeira
>>>>
>>>>
>>>> _______________________________________________
>>>> undertow-dev mailing list
>>>> undertow-dev at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/undertow-dev
>>>
>>>
>>>
>>>
>>> --
>>> Med venlig hilsen / Best regards
>>>
>>> Kim Rasmussen
>>> Partner, IT Architect
>>>
>>> Asseco Denmark A/S
>>> Kronprinsessegade 54
>>> DK-1306 Copenhagen K
>>> Mobile: +45 26 16 40 23
>>> Ph.: +45 33 36 46 60
>>> Fax: +45 33 36 46 61
>>>
>>>
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>>> undertow-dev mailing list
>>> undertow-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/undertow-dev
>>
>>
>>
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>
>
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