Request State Middleware

[k-macmillan]

User Story - Business Need

We need to store state data for a given request. That may be a request_id, a service_id, or any other number of things. This stored data is particular to the request, and should persist for all tasks related to it. Consider mypy early in the process. We will start with a request_id (the notification id).

• Ticket is understood, and QA has been contacted (if the ticket has a QA label).

User Story(ies)

As a VA Notify dev
I want To store request data
So that I can access necessary context

Additional Info and Resources

• Python docs on contextvars
• Passing context to coroutines

Acceptance Criteria

• Bear in mind SOLID principles - This is a good use case for ISP/DIP
• Repeatable method for establishing context
• request_id is available globally for that request
• state is cleaned up
• This work is added to the sprint review slide deck (key win bullet point and demo slide)

QA Considerations

Potential Dependencies

Out of Scope

Really testing this will involve hammering it with something like locust to ensure the context isn't jumping around. Trivial tests at human speeds are not sufficient. That exceeds the scope of this ticket.