Files
notifications-api/tests
Rebecca Law 841a4fc22f Mark letters as validation-failed if the templated letter is too long.
It is possible that the personalisation for a templated letter can make the letter exceed 10 pages or 5 sheets. We are not validating the letters posted via the API for this validation error. It is only possible to validate the letter once we create the PDF in notifications-template-preview. This means that the letter can only get a validation-failed status after the client has received a 201 from the POST to /v2/notifications.
NOTE: we only validate the preview row of a CSV for this validation error, this change will mean that it is possible for a letter to be marked as validation-failed after a successful file upload.

A new task to update the notification to `validation-failed` has been added to the API. If we find that the letter is too long once we have created the PDF we call the `update-validation-failed-for-templated-letter` task rather than `update-billable-units-for-letter` task.

New work flow for a letter in brief:
API - receives POST /v2/notifications
:: save to db
:: put CREATE_LETTERS_PDF task on queue for template preview to consume
TEMPLATE-PREVIEW - consumes task CREATE_LETTERS_PDF
:: create PDF
:: count pages of PDF
:: IF page count exceeds 10 pages
	 put in the letters-invalid-pdf S3 bucket with metadata (similar to the precompiled letters)
	 put `update-validation-failed-for-templated-letter` task on the queue for the API to consume
   ELSE
     put PDF in the `letters-pdf` bucket
     put `update-billable-units-for-letter` task on the queue
API - consumes `update-billable-units-for-letter` OR `update-validation-failed-for-templated-letter` task
:: IF `update-billable-units-for-letter` task:
   	update billable units for notification as usual
:: ELSE `update-validation-failed-for-templated-letter`:
   	update notification_status = `validation-failed`
ADMIN - view notification page for letter
:: show validation letter for templated letter

There will be 3 PRs in order to make this change, one for the API, template-preview and the admin app.

Deployment plan

Deploy Admin first
Deploy API
Deploy template-preview

Related PRs:
alphagov/notifications-template-preview#619
alphagov/notifications-admin#4107

https://www.pivotaltracker.com/story/show/169209742
2022-01-19 08:29:48 +00:00
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