On 26/06/2012, at 7:47 AM, Martin <mar...@webscio.net> wrote:
> On 25/06/12 22:27, Adrian Overbury wrote:
>> On 25/06/2012, at 10:16 PM, Martin <mar...@webscio.net> wrote:
>>
>>> On 14/06/12 12:38, Martin wrote:
>>>> Hi, thanks for your reply.
>>>>
>>>> Indeed, the ReconnectingClientFactory is being sent the Failure object to
>>>>
>>>> def clientConnectionLost(self, connector, reason):
>>>> log.msg('Lost connection. Reason: %s' % reason)
>>>> protocol.ReconnectingClientFactory.clientConnectionLost(self,
>>>> connector, reason)
>>>>
>>>> where "reason" is the Failure object that is "unhandled". is there
>>>> anything I could do to it there to make it handled?
>>>>
>>>> Also, the documentation in
>>>> http://twistedmatrix.com/documents/current/core/howto/defer.html says
>>>> that one can do d.addErrback(err.log) to deal with unhandled errors,
>>>> but what is d?
>>>>
>>>> In general, I'm not doing anything special.. I'm creating a
>>>> ReconnectingClientFactory and connecting it to a server..
>>>> f = MyReconnectingClientFactory(..)
>>>> reactor.connectSSL(url, port, f, ssl.ClientContextFactory())
>>>> reactor.run()
>>>>
>>>> Basically it. Any thoughts? Thanks a lot!
>>>>> On Jun 11, 2012, at 8:01 AM, Martin wrote:
>>>>>
>>>>>> Hi there,
>>>>>>
>>>>>> I've been looking around for a solution for several hours now, and
>>>>>> maybe
>>>>>> I'm just missing something..
>>>>>>
>>>>>> I've a factory that implements protocol.ReconnectingClientFactory which
>>>>>> works just fine, however, whenever the program ends running, I get a
>>>>>> bunch of Unhandled error in Deferred messages in my log for each
>>>>>> disconnection that occurred during runtime, such as Failure:
>>>>>> twisted.internet.error.ConnectionLost: ...
>>>>>>
>>>>>> Is there any way I could somehow "handle" these during runtime, so that
>>>>>> my log wouldn't be spammed with this at the end.. (or avoid it being
>>>>>> spammed somehow..)
>>>>> These messages are coming from some code which is issuing Deferreds,
>>>>> not from ReconnectingClientFactory. You need to add an errback to
>>>>> those Deferreds in your application code. There's no way to write a
>>>>> catch-all, just like there's no way to write a catch-all that can
>>>>> stop exceptions from being raised in basic Python.
>>>>>
>>>>> I can't say more without a code example, preferably
>>>>> a<http://sscce.org/>.
>>>>>
>>>>> -glyph
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Twisted-Python mailing list
>>>>> Twisted-Python@twistedmatrix.com
>>>>> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
>>>>>
>>>>>
>>> No suggestions as to how I could get rid of this? :(
>>>
>>>
>> I believe glyph gave you the answer to that already. In your example above
>> of d.addErrBack, d is the deferred object. Each of those needs to have an
>> errback handler attached to it. If you don't want to see anything out of
>> them, simply don't print anything.
>>
>>> _______________________________________________
>>> Twisted-Python mailing list
>>> Twisted-Python@twistedmatrix.com
>>> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
>> _______________________________________________
>> Twisted-Python mailing list
>> Twisted-Python@twistedmatrix.com
>> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
>>
>>
> Well, kind of - I know that I need to do addErrBack on the deferred
> objects, I kind of knew that when I asked the original question having
> read the documentation on deferreds. What I still don't know though is
> how am I supposed to catch these deferreds - that is not being explained
> anywhere in the documentation I'm afraid.
>
>
The page and bookmark
http://twistedmatrix.com/documents/current/core/howto/defer.html#auto4 explains
it pretty well. When there's an error your errback function is called and a
failure object is passed to it. You can handle it, drop it or pass it on as
you please or seem appropriate. Hope that helps.
> _______________________________________________
> Twisted-Python mailing list
> Twisted-Python@twistedmatrix.com
> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
_______________________________________________
Twisted-Python mailing list
Twisted-Python@twistedmatrix.com
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
