Event Driven

Event-driven architecture is modeled as events, publishers, and subscribers.

architecture :event_driven,
  events: "app/events/**/*.rb",
  publishers: "app/publishers/**/*.rb",
  subscribers: "app/subscribers/**/*.rb"

This checks:

  • event definitions do not depend on publishers or subscribers
  • publishers only depend on declared events
  • subscribers only depend on declared events
  • the declared components do not form cycles

The Rails default is:

preset :rails_event_driven

This is intentionally narrow. It checks source-level coupling, not event delivery semantics.