 privacy_consent: Separate automated emails send process
Before https://github.com/OCA/data-protection/pull/29 there was a race condition where an email could be sent while the same transaction that created the `privacy.consent` record still wasn't committed, producing a 404 error if the user clicked on "Accept" or "Reject" before all mails were sent.
To avoid that, a raw `cr.commit()` was issued, but this produced another situation where the user had to wait until the full email queue is cleared to get his page loaded. It wasn't an error, but a long queue meant several minutes waiting, and it's ulikely that an average human is so patient.
So, here's the final fix (I hope!). The main problem was that I was looking in the wrong place to send the email. It turns out that the `self.post_message_with_template()` method is absolutely helpless in the case at hand, where these criteria must be met:
* E-mail must be enqueued, no matter if there are less or more than 50 consents to send.
* The template must be processed per record.
* In an ideal world, a `cr.commit()` must be issued after each sent mail.
The metod that was being used:
* Didn't allow to use `auto_commit` mode.
* Only allowed to render the template per record if called with `composition_mode="mass_mail"`.
* Only allowed to enqueue emails if called with `composition_mode="mass_post"`.
Obviously, I cannot set 2 different values for `composition_mode`, so a different strategy had to be used.
I discovered that the `mail.template` model has a helpful method called `send_mail()` that, by default:
* Renders the template per record
* Enqueues the email
* The email queue is cleared in `auto_commit=True` mode.
So, from now on, problems are gone:
* The user click, or the cron run, will just generate the missing `privacy.consent` records and enqueue mails for them.
* The mail queue manager will send them later, in `auto_commit` mode.
* After sending the e-mail, this module will set the `privacy.consent` record as `sent`.
* Thanks to *not* sending the email, the process the user faces when he hits the "generate" button is faster.
* Instructions in the README and text in the "generate" button are updated to reflect this new behavior.
* Thanks to the `auto_commit` feature, if Odoo is rebooted in the middle of a mail queue clearance, the records that were sent remain properly marked as sent, and the missing mails will be sent after the next boot.
* No hardcoded commits.
* No locked transactions.
* BTW I discovered that 2 different emails were created when creating a new consent. I started using `mail_create_nolog=True` to avoid that problem and only log a single creation message.
Note to self: never use again `post_message_with_template()`.
6 years ago |
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New options for data processing activities:
#. Go to *Privacy > Master Data > Activities* and create one.
#. Give it a name, such as *Sending mass mailings to customers*.
#. Go to tab *Consent* and choose one option in *Ask subjects for consent*:
* *Manual* tells the activity that you will want to create and send the
consent requests manually, and only provides some helpers for you to
be able to batch-generate them.
* *Automatic* enables this module's full power: send all consent requests
to selected partners automatically, every day and under your demand.
#. When you do this, all the consent-related options appear. Configure them:
* A smart button tells you how many consents have been generated, and lets you
access them.
* Choose one *Email template* to send to subjects. This email itself is what
asks for consent, and it gets recorded, to serve as a proof that it was sent.
The module provides a default template that should be good for most usage
cases; and if you create one directly from that field, some good defaults
are provided for your comfortability.
* *Subjects filter* defines what partners will be elegible for inclusion in
this data processing activity.
* You can enable *Accepted by default* if you want to assume subjects
accepted their data processing. You should possibly consult your
lawyer to use this.
* You can choose a *Server action* (developer mode only) that will
be executed whenever a new non-draft consent request is created,
or when its acceptance status changes.
This module supplies a server action by default, called
*Update partner's opt out*, that syncs the acceptance status with the
partner's *Elegible for mass mailings* option.
#. Click on *Generate consent requests* link to create new consent requests.
* If you chose *Manual* mode, all missing consent request are created as
drafts, and nothing else is done now.
* If you chose *Automatic* mode, also those request e-mails are enqueued
and, when the mail queue is cleared, they will be set as *Sent*.
#. You will be presented with the list of just-created consent requests.
See below.
New options for consent requests:
#. Access the consent requests by either:
* Generating new consent requests from a data processing activity.
* Pressing the *Consents* smart button in a data processing activity.
* Going to *Privacy > Privacy > Consents*.
#. A consent will include the partner, the activity, the acceptance status,
and the request state.
#. You can manually ask for consent by pressing the button labeled as
*Ask for consent*.
#. All consent requests and responses are recorded in the mail thread below.
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