I checked the whole code, im not caching the object or anything..
The info entry is actually used by a few other cronjob processes also,
they all change another field in the same record.. but none of them
use or change msg_polled value
could the problem be related to that?.. i mean, info is global data
like counters right?
The logic used to retrieve info is as below
class Info(db.Model):
msg_polled = db.DateTimeProperty(auto_now_add = True)
.... More Properties ....
@classmethod
def get_info(cls):
info = cls.all().get()
if not info:
info = cls()
info.put()
return info
info = Info.get_info()
On Apr 2, 9:59 pm, Jeff S <[email protected]> wrote:
> Hi z33m,
>
> Is it possible that the info model which contains the msg_polled time
> is not being updated and still contains an old value for msg_polled? I
> think it would be helpful to see the code/logic used to obtain the
> last polled time info. It could be that multiple requests are started,
> all of which use the last committed info, before the info.put() in one
> of the requests is completed.
>
> Thank you,
>
> Jeff
>
> On Apr 1, 9:18 am, z33m <[email protected]> wrote:
>
> > Im writing a twitter app. It accepts commands as Direct Messages, so i
> > have setup a third party cronjob service to invoke a handler that
> > processes DMs at regular intervals. I have a Model 'Info' that has
> > just one entry, it stores some common data which are used in many
> > places in the App(in this case, the time when the messages were
> > processed recently). The general pattern of my handler is like this:
>
> > msgs = api.GetDirectMessages(since = info.msg_polled)
> > if not msgs:
> > return
> > logging.info('Processing Messages since %s ' % str(info.msg_polled))
> > for msg in msgs:
> > ...process commands...
> > logging.info('Processed Message :- @%s : %s' %
> > (msg.sender_screen_name, msg.text))
>
> > info.msg_polled = datetime.datetime.now()
> > info.put()
>
> > But sometimes i get logs like this :
>
> > I 03-30 07:50AM 10.973
> > Processing Messages since Sun, 29 Mar 2009 11:41:59 GMT
> > I 03-30 07:50AM 11.122
> > Processed Message :- @foo : Foo_Bar
> > -------------------------------------------------------
> > I 03-30 07:46AM 08.014
> > Processing Messages since Sun, 29 Mar 2009 11:41:59 GMT
> > I 03-30 07:46AM 08.130
> > Processed Message :- @foo : Foo_Bar
>
> > Here, it seems that info is not getting commited to the database. The
> > message is processed multiple number of times, sometimes upto 10+
> > times before the msg_polled value changes. But i am not getting any
> > Datastore exceptions. This happens only once in a while.
>
> > Any help is appreciated.
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