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How to launch Connector with multi worker?

Atchuthan - Technical Consultant, Sodexis Inc
on 4/10/14, 6:47 AM 5,847 views

I used guide available for Multiprocessing in openerp-connector. 

I created a bash file as start_connector and it contains

PYTHONPATH=/opt/openerp/v7.0/server connector/openerp-connector-worker --config /etc/openerp-server.conf --workers=2 --logfile=/tmp/openerp-connector.log

and I tried to start this file using this command

$ ./start_connector

Error Traceback:

  File "/usr/lib/python2.7/threading.py", line 808, in __bootstrap_inner
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/connector/queue/worker.py", line 304, in run
    self.check_alive(db_name, worker)
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/connector/queue/worker.py", line 317, in check_alive
    self._notify_alive(session, worker)
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/connector/queue/worker.py", line 325, in _notify_alive
    dbworker_obj = session.pool.get('queue.worker')
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/connector/session.py", line 128, in pool
    self._pool = openerp.pooler.get_pool(self.cr.dbname)
  File "/opt/openerp/v7.0/server/openerp/pooler.py", line 49, in get_pool
    return get_db_and_pool(db_name, force_demo, status, update_module)[1]
  File "/opt/openerp/v7.0/server/openerp/pooler.py", line 33, in get_db_and_pool
    registry = RegistryManager.get(db_name, force_demo, status, update_module)
  File "/opt/openerp/v7.0/server/openerp/modules/registry.py", line 193, in get
  File "/opt/openerp/v7.0/server/openerp/modules/registry.py", line 219, in new
    openerp.modules.load_modules(registry.db, force_demo, status, update_module)
  File "/opt/openerp/v7.0/server/openerp/modules/loading.py", line 350, in load_modules
    force, status, report, loaded_modules, update_module)
  File "/opt/openerp/v7.0/server/openerp/modules/loading.py", line 256, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/opt/openerp/v7.0/server/openerp/modules/loading.py", line 159, in load_module_graph
  File "/opt/openerp/v7.0/server/openerp/modules/module.py", line 415, in load_openerp_module
    getattr(sys.modules['openerp.addons.' + module_name], info['post_load'])()
  File "/opt/openerp/v7.0/web/addons/web/http.py", line 628, in wsgi_postload
  File "/opt/openerp/v7.0/web/addons/web/http.py", line 517, in __init__
  File "/opt/openerp/v7.0/web/addons/web/http.py", line 580, in load_addons
    m = __import__('openerp.addons.' + module)
  File "/opt/openerp/v7.0/server/openerp/modules/module.py", line 133, in load_module
    mod = imp.load_module('openerp.addons.' + module_part, f, path, descr)
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/prestashoperpconnect/__init__.py", line 27, in <module>
    import prestashop_model
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/prestashoperpconnect/prestashop_model.py", line 36, in <module>
    from .unit.import_synchronizer import (
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/prestashoperpconnect/unit/__init__.py", line 26, in <module>
    import mapper
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/prestashoperpconnect/unit/mapper.py", line 35, in <module>
    from backend_adapter import GenericAdapter
  File "/opt/openerp/v7.0/custom_modules/launchpad_links/prestashoperpconnect/unit/backend_adapter.py", line 29, in <module>
    from prestapyt import PrestaShopWebServiceDict
  File "/usr/local/lib/python2.7/dist-packages/prestapyt-0.4.0-py2.7.egg/prestapyt/__init__.py", line 1, in <module>
    from prestapyt import PrestaShopWebService
  File "/usr/local/lib/python2.7/dist-packages/prestapyt-0.4.0-py2.7.egg/prestapyt/prestapyt.py", line 21, in <module>
    import requests
  File "/usr/local/lib/python2.7/dist-packages/requests/__init__.py", line 52, in <module>
    from . import utils
  File "/usr/local/lib/python2.7/dist-packages/requests/utils.py", line 22, in <module>
    from .compat import parse_http_list as _parse_list_header
  File "/usr/local/lib/python2.7/dist-packages/requests/compat.py", line 95, in <module>
    from .packages import chardet
  File "/usr/local/lib/python2.7/dist-packages/requests/packages/__init__.py", line 3, in <module>
    from . import urllib3
  File "/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/__init__.py", line 16, in <module>
    from .connectionpool import (
  File "/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/connectionpool.py", line 20, in <module>
    from queue import LifoQueue, Empty, Full
  File "/opt/openerp/v7.0/custom_modules/launchpad/openerp-connector/connector/queue/__init__.py", line 22, in <module>
    import model
  File "/opt/openerp/v7.0/custom_modules/launchpad/openerp-connector/connector/queue/model.py", line 30, in <module>
    from .job import STATES, DONE, PENDING, OpenERPJobStorage
  File "/opt/openerp/v7.0/custom_modules/launchpad/openerp-connector/connector/queue/job.py", line 33, in <module>
    from ..exception import (NotReadableJobError,
ValueError: Attempted relative import beyond toplevel package

Where am I wrong?

or Is there a better method of launching in multi-worker mode for connector?

Did you manually edited the connector files? Because the line "from connection.exception import (NotReadableJobError," is normally "..exception import (NotReadableJobError,"

Camptocamp SA, Guewen Baconnier - Software Developer, Camptocamp
on 5/28/14, 5:38 AM

@Guewen Baconnier: yes, I made changes to solve the error. I have updated the original error.

Atchuthan - Technical Consultant, Sodexis Inc
on 5/30/14, 9:21 AM

Med Said BARA

--Med Said BARA--

| 5 5 7
--Med Said BARA--
Med Said BARA
On 8/25/14, 1:56 PM


This mean that the file exception.py can't be found.

NB: Try first to check if your addons custom-modules (/opt/openerp/v7.0/custom_modules/launchpad/openerp-connector) is in the addon_path  of your openerp-server.conf, add it if not.

This error is due to your installation path !

You can edit your .....opt/openerp/v7.0/custom_modules/launchpad/openerp-connector/connector/queue/job.py file at line 34:

and give the right path to the file exception.py: from the-full-path-to-the-connector-module.connector.exception import ............

Like in:  from openerp.addons.connector.exception import .........

This also can be corrected in /queue/__init__.py  by importing the /connector/exception.py package

The BEST WAY to avoid this kind of errors is to use an ABSOLUTE IMPORT



Guewen Baconnier - Software Developer, Camptocamp

--Guewen Baconnier - Software Developer, Camptocamp--

| 6 7 8
Lausanne, Switzerland
--Guewen Baconnier - Software Developer, Camptocamp--

Guewen works at Camptocamp as an Odoo developer since 2010. He is the lead developer of the Odoo Connector framework and the Magento Connector. He is a delegate member of the OCA, a committer and an active contributor to the OCA projects.


Guewen Baconnier - Software Developer, Camptocamp
On 8/25/14, 7:09 AM

Use this buildout configuration that provide a helper script to run the multiprocess workers.

Miku Laitinen
On 12/28/15, 5:13 PM

It seems that urllib3/connectionpool.py (line 20) imports stuff from "queue", which most certainly shouldn't be the "queue" package in the connector odoo module.

Changing the "queue" package name under connector seems to work, but it's still a bit hacky. This could also be an import priority issue. 


Atchuthan - Technical Consultant, Sodexis Inc

--Atchuthan - Technical Consultant, Sodexis Inc--
| 5 5 8
Puducherry, India
--Atchuthan - Technical Consultant, Sodexis Inc--
Passionate coder in Python/Odoo(formerly known as OpenERP).

Contact me via GMail: atchuthantu@gmail.com via Skype: atchuthan_skype
via Linkedin: http://in.linkedin.com/in/atchuthantu
Atchuthan - Technical Consultant, Sodexis Inc
On 7/24/14, 3:26 AM

When I looked into the community mailing list, there were 2 messages that had similar topic of Multi worker Support 

1. https://lists.launchpad.net/openerp-connector-community/msg00320.html

2. https://lists.launchpad.net/openerp-connector-community/msg00005.html


But there seems to be no other useful leads to solve this problem.  

Need assistance.


On 6/5/14, 6:55 AM

You can try Magento openerp connector provide by webkul : https://store.webkul.com/Magento-Extensions/Magento-OpenERP-Bridge.html

Their code don't base on worker concept but using core observer pattern of mangeto 

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Asked: 4/10/14, 6:47 AM
Seen: 5847 times
Last updated: 12/28/15, 5:13 PM