How to remove log listeners for a pool:ed connections.

According to the documentation the setup callback is where you should do stuff like add log listeners to the connection. It works fine but when the connection is release back to the pool I get a warning that it still have a active log listener, which is correct but misleading.

• How/where should I remove the log listener?
• Is there a release callback somewhere that I have missed?
• I see that the warning is made using the warnings python api. I can just silence it but that might hide actual errors.

Example code:

pool = await asyncpg.create_pool(
    user='postgres',
    setup=lambda conn: conn.add_log_listener(_log_test),
)

After I have checked out a connection and released it back this gets printed to stdout/err:
/opt/python3.7/lib/python3.7/site-packages/asyncpg/connection.py:1295: InterfaceWarning: <wild.database.LeaderConnection object at 0x7f006d4e1208> is being released to the pool but has 1 active log listener

Commencez par la documentation du pool de connexions et le comportement du callback de configuration décrit dans l’issue. Inspectez asyncpg/connection.py autour de la ligne 1295 pour comprendre l’avertissement concernant les listeners actifs et suivez la manière dont les connexions sont libérées. Le travail est terminé lorsque le cycle de vie des listeners est clair et que l’avertissement trompeur ou le mécanisme de libération manquant est corrigé, sans masquer les avertissements sans rapport.