2016-12-15 0:30 GMT+05:00 Peter Eisentraut <peter.eisentr...@2ndquadrant.com>:
>>>> TryBeginSession()?
>>>
>>> What exactly would that do?
>> Return status (success\failure) and session object, if a function succeeded.
>>
>> If there is max_connections exceeded, then (false,null).
>>
>> I'm not sure whether this idiom is common for Python.
>
> You can catch PostgreSQL exceptions in PL/Python, so this can be handled
> in user code.
>
> Some better connection management or pooling can probably be built on
> top of the primitives later, I'd say.

Agree, doing this in Python is the better option.

And one more thing... Can we have BackgroundSessionExecute() splitted
into two parts: start query and wait for results?
It would allow pg_background to reuse bgsession's code.

Best regards, Andrey Borodin.


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