Re: [Pyst-users] a comment...

[Jan M. <jpm...@gm...>]

>>
>>             # first build a list of the functions to execute
>>             callbacks = self._event_callbacks.get(ev.name, [])
>>             callbacks.extend(self._event_callbacks.get('*', []))  # <- !!!

>> This is a potential problem.  In theory, if I understand what you are
>> saying correctly, each time an event is handled the '*' callback list
>> should get appended to the ev.name list.
right. an abstraction of the issue (aDict = self._event_callbacks, 'a' = 
ev.name, 'b' = '*', aList = callbacks):

 >>> aDict = {'a': [1, 2], 'b': [3]}
 >>> aList = aDict['a']
 >>> aList
[1, 2]
 >>> aList.extend(aDict['b'])
 >>> aList
[1, 2, 3]
 >>> aDict
{'a': [1, 2, 3], 'b': [3]}

i fixed this in my private version of the class Manager. I used sets.Set 
instead of lists, but that's just a minor remark.

if i'm informed correctly, you are one of the fathers of Asterisk and 
also have brought the Manager class to where it is. since i'm knitting on

i. a table-driven (and hence flexible) implementation of most (or all?) 
API commands as Manager.methods,
ii. implementing some magic class customization __methods__, and
iii. refactoring the thread loops to reach a deeper understanding of 
what's going on (I find the deeply nested while-loops a bit scary),

i wonder if you might help me on some of the following questions:

0. does anyone mind if i keep on developing that? if this is not the 
case, i'm willing to share my results, yet i'm myself a decent private 
user and do not need unconditional, 100% reliability. so i would try and 
react on bug reports, but i will not guarantee any stability whatsoever.
1. do you know how much the Python API is used, and whether backward 
compatibility is an issue?
2. as to the refactoring: do you have a test harness of your development?
3. i don't have much experience with multi-threading. can you tell me 
what the major (possibly also open) issues were/are?
4. is there a chance to obtain a normalized (machine-readable) scheme of 
the API commands and their syntax on-the-fly by asking the Asterisk/a 
website?

regards j.