Purpose
=======
Improve the portal user deletion by preventing timeouts and
avoiding several rollbacks causes.
Specifications
==============
- Move the portal users deletions from autovacuum to its own cron.
On big databases such as odoo.com, deleting a res.users takes
more than 1 minute. Move the whole process into its own scheduled
tasks.
- Commit the deletion at each user. As said previously the deletion
can be expensive, so commit what has been done to avoid having to
delete the same user again in case of rollbacks or timeout.
- Delete the user and the partner separately. If the partner is used
in a sales order for instance, the unlink is possible for the user
and not the parner. It allows to unlink the user and keep the
partner in case it cannot be deleted.
- Re-call the cron into another transaction in case there are too many
users to delete, instead of waiting next call, that is supposed
to occur the day after.
Taskid: 3222941
Part-of: odoo/odoo#114656
Purpose
=======
Allow portal users to deactivate their accounts from the portal view.
After the deactivation, they are redirected to the login page, so
they can verify that they can not longer login with their credentials.
We first archived the record and remove sensitive information (password,
login, so he can not log in again with the same credentials).
After the deactivation, we blacklist the email and the phone of the
user, so we are sure that we never send him again email / SMS.
Then, we create a <res.users.deletion> to delete the user and the
partner in a CRON because this operation can be heavy (write_uid,
create_uid field on all models).
Task-2629544
Part-of: odoo/odoo#78298
Yannick Tivisse