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# Copyright (C) 2018 by Camptocamp
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
from odoo import api, fields, models, _
from datetime import datetime, timedelta
import logging
_logger = logging.getLogger(__name__)
class IrCron(models.Model):
_inherit = 'ir.cron'
oneshot = fields.Boolean(
string='Single use',
default=False,
help='Enable this to run the cron only once. '
'The cron will be deleted right after execution.'
)
@api.model
def create(self, vals):
if vals.get('oneshot'):
vals.update(self._oneshot_defaults(**vals))
return super().create(vals)
def _oneshot_defaults(
self, name=None, delay=('minutes', 10), nextcall=None, **kw):
if nextcall is None:
nextcall = fields.Datetime.to_string(
datetime.now() + timedelta(**dict([delay, ]))
)
return {
'state': 'code',
# TODO: shall we enforce `doall` too?
# enforce numbercall
'numbercall': 1,
# make sure name is automatic
'name': self._oneshot_make_name(name),
'nextcall': nextcall,
}
def _oneshot_make_name(self, name=None):
name = ' ' + (name if name else '')
return '{}{}'.format(
self.env['ir.sequence'].next_by_code('cron.oneshot'), name
)
@api.model
def schedule_oneshot(self, model_name, method=None, code=None,
delay=('minutes', 10), **kw):
"""Create a one shot cron.
:param model_name: a string matching an odoo model name
:param method: an existing method to call on the model
:param code: custom code to run on the model
:param delay: timedelta compat values for delay as tuple
:param kw: custom values for the cron
"""
assert method or code, _('Provide a method or some code!')
if method and not code:
code = 'model.{}()'.format(method)
model = self.env['ir.model']._get(model_name)
vals = {
'model_id': model.id,
'code': code,
}
vals.update(self._oneshot_defaults(delay=delay))
vals.update(kw)
# make sure is a oneshot cron ;)
vals['oneshot'] = True
return self.create(vals)
def _oneshot_cleanup_domain(self):
# TODO: any better way to select them?
return [
('oneshot', '=', True),
('numbercall', '=', 0), # already executed
('active', '=', False), # already executed and numbercall=0
]
@api.model
def cron_oneshot_cleanup(self):
self.with_context(
active_test=False
).search(self._oneshot_cleanup_domain()).unlink()