queue_job

Job Queue

This addon adds an integrated Job Queue to Odoo.

It allows to postpone method calls executed asynchronously.

Jobs are executed in the background by a Jobrunner, in their own transaction.

Example:

from odoo import models, fields, api
from odoo.addons.queue_job.job import job

class MyModel(models.Model):
   _name = 'my.model'

   @api.multi
   @job
   def my_method(self, a, k=None):
       _logger.info('executed with a: %s and k: %s', a, k)


class MyOtherModel(models.Model):
    _name = 'my.other.model'

    @api.multi
    def button_do_stuff(self):
        self.env['my.model'].with_delay().my_method('a', k=2)

In the snippet of code above, when we call button_do_stuff, a job capturing the method and arguments will be postponed. It will be executed as soon as the Jobrunner has a free bucket, which can be instantaneous if no other job is running.

Features:

• Views for jobs, jobs are stored in PostgreSQL
• Jobrunner: execute the jobs, highly efficient thanks to PostgreSQL's NOTIFY
• Channels: give a capacity for the root channel and its sub-channels and segregate jobs in them. Allow for instance to restrict heavy jobs to be executed one at a time while little ones are executed 4 at a times.
• Retries: Ability to retry jobs by raising a type of exception
• Retry Pattern: the 3 first tries, retry after 10 seconds, the 5 next tries, retry after 1 minutes, ...
• Job properties: priorities, estimated time of arrival (ETA), custom description, number of retries
• Related Actions: link an action on the job view, such as open the record concerned by the job

Installation

Be sure to have the requests library.

Configuration

• Using environment variables and command line:

• Adjust environment variables (optional):

• ODOO_QUEUE_JOB_CHANNELS=root:4

• or any other channels configuration. The default is root:1

• if xmlrpc_port is not set: ODOO_QUEUE_JOB_PORT=8069

• Start Odoo with --load=web,base_sparse_field,queue_job and --workers greater than 1. [1]

• Using the Odoo configuration file:

[options]
(...)
workers = 4
server_wide_modules = web,web_kanban,queue_job

(...)
[queue_job]
channels = root:4

• Confirm the runner is starting correctly by checking the odoo log file:

...INFO...queue_job.jobrunner.runner: starting
...INFO...queue_job.jobrunner.runner: initializing database connections
...INFO...queue_job.jobrunner.runner: queue job runner ready for db <dbname>
...INFO...queue_job.jobrunner.runner: database connections ready

• Create jobs (eg using base_import_async) and observe they start immediately and in parallel.
• Tip: to enable debug logging for the queue job, use --log-handler=odoo.addons.queue_job:DEBUG

[1]	It works with the threaded Odoo server too, although this way of running Odoo is obviously not for production purposes.

Usage

To use this module, you need to:

1. Go to Job Queue menu

Known issues / Roadmap

• After creating a new database or installing queue_job on an existing database, Odoo must be restarted for the runner to detect it.
• When Odoo shuts down normally, it waits for running jobs to finish. However, when the Odoo server crashes or is otherwise force-stopped, running jobs are interrupted while the runner has no chance to know they have been aborted. In such situations, jobs may remain in started or enqueued state after the Odoo server is halted. Since the runner has no way to know if they are actually running or not, and does not know for sure if it is safe to restart the jobs, it does not attempt to restart them automatically. Such stale jobs therefore fill the running queue and prevent other jobs to start. You must therefore requeue them manually, either from the Jobs view, or by running the following SQL statement before starting Odoo:

update queue_job set state='pending' where state in ('started', 'enqueued')

Bug Tracker

Bugs are tracked on GitHub Issues. In case of trouble, please check there if your issue has already been reported. If you spotted it first, help us smashing it by providing a detailed and welcomed feedback.

Credits

Images

• Odoo Community Association: Icon.

Contributors

• Guewen Baconnier <[email protected]>
• Stéphane Bidoul <[email protected]>
• Matthieu Dietrich <[email protected]>
• Jos De Graeve <[email protected]>
• David Lefever <[email protected]>
• Laurent Mignon <[email protected]>
• Laetitia Gangloff <[email protected]>

Maintainer

This module is maintained by the OCA.

OCA, or the Odoo Community Association, is a nonprofit organization whose mission is to support the collaborative development of Odoo features and promote its widespread use.

To contribute to this module, please visit https://odoo-community.org.