It make lots of sense.  I really like your idea of a command that
generate an error report.  This could prove tremendously usefull if
implemented correctly:  I suppose the tricky part will be to determine
what information is usefull and should be included.
The audit is related to Bruce comments too: once you have some
exchanges in memory, being able to easily filter and display those
could be very valuable, provided we can come was an easy enough syntax
for filtering them.

On Tue, Mar 11, 2008 at 1:20 PM, Gert Vanthienen
<[EMAIL PROTECTED]> wrote:
> Guillaume,
>
>  Personally, I find myself using the logging to track down issues most of
>  the time as well.  Very rarely, I have to rely on remote debugging to
>  really see the thing going astray step by step.  If we would really want
>  to make this debug flow useful, it would require quite a few features
>  and I'm not sure this is the right time to invest that amount of time --
>  there still is a lot of other work to be done with more benefit for the
>  users in my mind.
>
>  On the other hand, I think we could invest some time in improving the
>  possibilities for logging/auditing problematic message exchanges (or
>  entire 'flows' by looking at the correlation id).  I'm thinking of
>  - console commands to enable on-the-fly auditing (based on message
>  properties, exceptions being thrown, ...) to isolate the message
>  exchanges that have gone wrong
>  - a command to create an error report (with useful information such as
>  thread dumps, errors in messages, a subset of the log messages belonging
>  to the same message flow, ...) -- could also be useful if we want them
>  to provide more information on the mailing list
>
>  Gert
>
>
>
>  Guillaume Nodet wrote:
>  > I've created the following JIRA issue for ServiceMix NMR.
>  > Do you think it's worth doing it ?  Would it help people finding
>  > problems ?  I usually use the log file, but having something more
>  > dynamic may be helpful.
>  >
>  > On Tue, Mar 11, 2008 at 10:36 AM, Guillaume Nodet (JIRA)
>  > <[EMAIL PROTECTED]> wrote:
>  >
>  >> Debugging flows
>  >>  ---------------
>  >>
>  >>                  Key: SMX4NMR-21
>  >>                  URL: https://issues.apache.org/activemq/browse/SMX4NMR-21
>  >>              Project: ServiceMix NMR
>  >>           Issue Type: New Feature
>  >>             Reporter: Guillaume Nodet
>  >>
>  >>
>  >>  Create a set of console commands / OSGi service / NMR listeners to be 
> able to:
>  >>   * add / remove / disable breakpoints (with conditional evaluation on 
> exchanges)
>  >>   * list paused exchanges
>  >>   * inspect / modify a paused exchange
>  >>   * resume execution for a exchange
>  >>
>  >>  A breakpoint is basically a condition that filters an exchange.  If the 
> filter match, the breakpoint is activated and the flow for the given exchange 
> is paused.   Simple breakpoints include:
>  >>    * exchanges originated from a given endpoint
>  >>    * exchanges targeted at a given endpoint
>  >>    * exchanges in an ERROR status
>  >>    * ...
>  >>
>  >>  Using an ExchangeListener, it should be easy to intercept all the 
> exchanges.  I think the problem is that currently, the only way is to suspend 
> the calling thread and wait for a signal that would be set by a command when 
> resuming an exchange.  This is not really scalable.   Maybe using a flow is a 
> better option, but I think it would be more intrusive, so that entering / 
> exiting debug mode may not be easy.
>  >>
>  >>  --
>  >>  This message is automatically generated by JIRA.
>  >>  -
>  >>  You can reply to this email to add a comment to the issue online.
>  >>
>  >>
>  >>
>  >
>  >
>  >
>  >
>
>



-- 
Cheers,
Guillaume Nodet
------------------------
Blog: http://gnodet.blogspot.com/

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