event.effects -= 1 error in circuits

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Mark Scherfling

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May 14, 2020, 6:43:41 PM5/14/20
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We have successfully used circuits in many solutions. But this error with events.effects has us baffled. There's no extraordinary logic used when using circuits in this circumstance

Apr 15 03:48:04: 2020-04-15 03:48:04,786 INFO [threat_webservice] helper: <system.user.name[threat_lookup_helper] (**)>, cts_search.threatstream
Apr 15 03:48:04: <system.user.name[cts_search.threatstream] (32463dcf-8c22-5dd7-bde6-372226643453)>Unhandled ERROR: 'ThreatServiceLookupEvent' object has no attribute 'effects'
Apr 15 03:48:04: Traceback (most recent call last):
Apr 15 03:48:04: File "/usr/local/lib/python2.7/site-packages/circuits/core/manager.py", line 957, in run
Apr 15 03:48:04: self.tick()
Apr 15 03:48:04: File "/usr/local/lib/python2.7/site-packages/circuits/core/manager.py", line 917, in tick
Apr 15 03:48:04: self._queue and self.flush()
Apr 15 03:48:04: File "/usr/local/lib/python2.7/site-packages/circuits/core/manager.py", line 593, in flushEvents
Apr 15 03:48:04: self.root._flush()
Apr 15 03:48:04: File "/usr/local/lib/python2.7/site-packages/circuits/core/manager.py", line 582, in _flush
Apr 15 03:48:04: self._dispatcher(event, channels, self._flush_batch)
Apr 15 03:48:04: File "/usr/local/lib/python2.7/site-packages/circuits/core/manager.py", line 695, in _dispatcher
Apr 15 03:48:04: self._eventDone(event, err)
Apr 15 03:48:04: File "/usr/local/lib/python2.7/site-packages/circuits/core/manager.py", line 720, in _eventDone
Apr 15 03:48:04: event.effects -= 1
Apr 15 03:48:04: AttributeError: 'ThreatServiceLookupEvent'

James Mills

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May 14, 2020, 6:58:37 PM5/14/20
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Hi Mark,

Can I confirm which version of circuits you are using?

A PyPi release or Git @ HEAD? If Git which SHA?

Kind regards


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Mark Scherfling

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May 15, 2020, 10:00:11 AM5/15/20
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circuits==3.2
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James Mills

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May 17, 2020, 10:00:03 AM5/17/20
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Can I ask that you try the Git master version? There hasn't been a release since ~2016 and master is 94 commits ahead of the latest 3.2 release.
The lines in the Traceback you posted don't even match.

Thanks!

cheers
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Alessio Deiana

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May 18, 2020, 4:15:57 PM5/18/20
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ThreatServiceLookupEvent seems to be a custom event.
You may have over written the "effects" attribute. Can you check if you have a function called "effects" in your ThreatServiceLookupEvent?

Alessio Deiana

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May 18, 2020, 4:20:36 PM5/18/20
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It is also possible that in the constructor of ThreatServiceLookupEvent you are not calling the Event constructor, leading to not initializing the events attribute.

James Mills

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May 18, 2020, 6:56:11 PM5/18/20
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Or not properly subclasses the `Event` base class and called the super constructor in a custom `__init__`
(pretty sure this is documented)

Kind regards

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Mark Scherfling

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May 20, 2020, 10:56:19 AM5/20/20
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Thank you all for your responses.

The issue appears at scale where the same event is fired overlapping with other events.
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