42 lines
2.1 KiB
Python
42 lines
2.1 KiB
Python
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# Part of Odoo. See LICENSE file for full copyright and licensing details.
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from odoo import _, api, models
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from odoo.exceptions import ValidationError
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class IrCronTrigger(models.Model):
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_inherit = 'ir.cron.trigger'
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@api.constrains('cron_id')
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def _check_image_cron_is_not_already_triggered(self):
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""" Ensure that there is a maximum of one trigger at a time for `ir_cron_fetch_image`.
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This cron is triggered in an optimal way to retrieve fastly the images without blocking a
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worker for a long amount of time. It fetches images in multiples batches to allow other
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crons to run in between. The cron also schedules itself if there are remaining products to
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be processed or if it encounters errors like a rate limit reached, a ConnectionTimeout, or
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service unavailable. Multiple triggers at the same will trouble the rate limit management
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and/or errors handling. More information in `product_fetch_image_wizard.py`.
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:return: None
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:raise ValidationError: If the maximum number of coexisting triggers for
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`ir_cron_fetch_image` is reached
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"""
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ir_cron_fetch_image = self.env.ref(
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'product_images.ir_cron_fetch_image', raise_if_not_found=False
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)
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if ir_cron_fetch_image and self.cron_id.id != ir_cron_fetch_image.id:
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return
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cron_triggers_count = self.env['ir.cron.trigger'].search_count(
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[('cron_id', '=', ir_cron_fetch_image.id)]
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)
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# When the cron is automatically triggered, we must allow two triggers to exists at the same
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# time: the one that triggered the cron and the one that will schedule another cron run. We
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# check whether the cron was automatically triggered rather than manually triggered to cover
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# the case where the admin would create an ir.cron.trigger manually.
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max_coexisting_cron_triggers = 2 if self.env.context.get('automatically_triggered') else 1
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if cron_triggers_count > max_coexisting_cron_triggers:
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raise ValidationError(_("This action is already scheduled. Please try again later."))
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