View a single CAN's event history / audit log

[jonnalley]

User Story

As an OPRE staff member, I need to see the history of a CAN's creation and modifications so I can be aware of what changes have been made over its lifecycle.

Acceptance Criteria

• For a given CAN, a user can view a history of the who, when, and what of the CAN's changes/audit log
• WRT the "who", as with all data changes, being able to track not only the OPS user, but also remote IP address is required. See AU-7 and AU-7 (1)
• Audit logs should be immutable (AU-9)

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Tasks

UX

• Design tasks done in View a single CAN's details #2542

Dev

API

• Update openapi.yml for /can-history endpoint and example response #3215

FE

• Add component for CAN history to the CAN Details page

BE

• Add MessageBus to handle triggers on OpsEvent #3199
• Add CANHistory model
• Add a record to CANHistory in the service layer for:
  • /can
  • /budget-line-items
  • /can-funding-received
  • /can-funding-details
  • /can-funding-budget
• Add /can-history endpoint #3276
• Add CANHistoryFormatter class responsible for formatting CANHistory records (used in the /can-history response)
• Tech debt: Back port CANHistory solution to AgreementHistory

Definition of Done Checklist

• UI works as designed (UX team)
• Usability validated (UX team)
• PR(s) have been merged to main
• Design/tech debt eliminated
• New design/tech debt documented (if applicable)
• Build process updated
• Documentation updated or added
• Feature flags/toggles created

Additional Context & Resources

• This was originally an AC in View a single CAN's details #2542 but split off