[11.0] session_store with worker > 0

[maitredede]

Hi,

I am trying to use muk_session_store module with config worker = 10 on Odoo 11.

I have this error : AttributeError: 'PostgresSessionStore' object has no attribute 'cursor'

Can it be related to multithreading issues with SessionStore objects ?

Some log parts :

2019-11-04 05:45:39,143 24 INFO ? odoo.http: HTTP Configuring static files
2019-11-04 05:45:39,159 24 INFO ? odoo.sql_db: Connection to the database failed
2019-11-04 05:45:39,409 24 INFO ? werkzeug: 172.28.0.1 - - [04/Nov/2019 05:45:39] "GET / HTTP/1.1" 500 -
2019-11-04 05:45:39,417 24 ERROR ? werkzeug: Error on request:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/werkzeug/serving.py", line 205, in run_wsgi
    execute(self.server.app)
  File "/usr/lib/python3/dist-packages/werkzeug/serving.py", line 193, in execute
    application_iter = app(environ, start_response)
  File "/usr/lib/python3/dist-packages/odoo/service/wsgi_server.py", line 166, in application
    return application_unproxied(environ, start_response)
  File "/usr/lib/python3/dist-packages/odoo/service/wsgi_server.py", line 154, in application_unproxied
    result = handler(environ, start_response)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1321, in __call__
    return self.dispatch(environ, start_response)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1295, in __call__
    return self.app(environ, start_wrapped)
  File "/usr/lib/python3/dist-packages/werkzeug/wsgi.py", line 599, in __call__
    return self.app(environ, start_response)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1457, in dispatch
    explicit_session = self.setup_session(httprequest)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1364, in setup_session
    session_gc(self.session_store)
  File "/usr/lib/python3/dist-packages/odoo/tools/func.py", line 23, in __get__
    value = self.fget(obj)
  File "/var/lib/isi-addons/muk_session_store/patch/http.py", line 82, in session_store
    return postgres.PostgresSessionStore(session_class=http.OpenERPSession)
  File "/var/lib/isi-addons/muk_session_store/store/postgres.py", line 53, in __init__
    self._open_connection()
  File "/var/lib/isi-addons/muk_session_store/store/postgres.py", line 74, in _open_connection
    self._create_database()
  File "/var/lib/isi-addons/muk_session_store/store/postgres.py", line 64, in _create_database
    self._setup_db()
  File "/var/lib/isi-addons/muk_session_store/store/postgres.py", line 39, in wrapper
    return func(self, *args, **kwargs)
  File "/var/lib/isi-addons/muk_session_store/store/postgres.py", line 79, in _setup_db
    self.cursor.execute("""
AttributeError: 'PostgresSessionStore' object has no attribute 'cursor'
2019-11-04 05:45:39,649 31 INFO ? odoo: Odoo version 11.0-20191104
2019-11-04 05:45:39,649 31 INFO ? odoo: Using configuration file at /etc/odoo/odoo.conf

I am running a customized docker container (based on official script, adding your modules and some others). The odoo.conf contains workers = 10 . I encountered this error when trying to run unit tests with this image. It creates an empty database, and it fails at first authentication.
If I remove the worker parameter (leave it to default), it works fine.

Has someone of something I can try to make it work ? So I can try to improve my Odoo instance concurrent workload... Thanks :)