Run custom code upon error ticket issuance?

[Francisco Ribeiro]

Hi all,

I have created an event viewer web console that uses websockets to keep itself up to date. 

I wanted error tickets to show up in here as well, so once a ticket is issued it would execute my custom code that keeps my event viewer up to date with a link to the ticket itself.

Ideally, the solution should not involve changing web2py source code since I could lose my changes once I upgrade web2py but if it comes to that, i'm OK with it.

Thanks in advance.

Kind regards,

Francisco

[Leonel Câmara]

I'd say the easiest way would be to use routes_on_error, you can put a controller function of your application there.

On you web2py directory you would make a routes.py with

routes_onerror = [
  ('myapp/*', '/myapp/default/error')
]

Then on default.py you could have a function like this:

def error():
    code = request.vars.code
    ticket = request.vars.ticket
    if code == '500':
        # do your websocket stuff
    return locals()  # Make sure you have a error.html for the visitor to get a nice error page

[Francisco Ribeiro]

That is useful but is it really equivalent to error ticket issuance i.e. do all tickets we see as error tickets hit the routes_onerror?  What if the error is triggered by a scheduled task running in the background?

Thanks

[Leonel Câmara]

No this doesn't work for scheduler tasks. Note that scheduler task that have errors do not produce an error ticket anyway. For scheduler tasks I would inherit from scheduler and override set_worker_status to also do some other action when it's setting it to FAILED.