PuduLangMediator.Publisher

type: module path: "@root/src/PuduLangMediator/Publisher.pudu" fidelity: Active grammar: "[[grammar/pudu]]" depth_score: 0.4 depth_status: SHALLOW tags: [module, seam] aliases: [PuduLangMediator.Publisher]

Purpose

What a component that only publishes notifications depends on: a trait the mediator implements, so a test double stands in for it.

Interface

Signatures

export trait Publisher {
  fn publish[N, E](self: &Self, subject: &Notification.Kind[N, E], notification: N, context: Context.Context) -> Messaging.Outcome[(), E]
  fn broadcast(self: &Self, envelope: Message.Envelope, context: Context.Context) -> Message.Answer
}

Implementations

• impl Publisher for Mediator.Mediator

Linkage

• Requires: [[src/PuduLangMediator]], [[src/PuduLangMediator/Context]], [[src/PuduLangMediator/Mediator]], [[src/PuduLangMediator/Message]], [[src/PuduLangMediator/Notification]].
• Consumed by: programs using the package.

Algorithm

1. Mediator.Mediator implements it by delegating to publishWith and broadcastWith.

Negative Logic (Prohibited Paths)

• A component holding a dynamic Publisher cannot send requests.

Edge Cases

• A recording double lets a suite assert what was published.

Depth

DEPTH 0.4 (SHALLOW). Tested by the suite mirroring this module under test/.

Grill Log

• Q: Why separate from the sender? A: Most components either ask or announce; separate traits keep each dependency as narrow as its use. _Rejected:_ one combined trait only.

Referenced by

[[CHANGELOG]] · [[seams/Sender]] · [[src/PuduLangMediator]] · [[src/PuduLangMediator/Context]] · [[src/PuduLangMediator/Mediator]] · [[src/PuduLangMediator/Message]] · [[src/PuduLangMediator/Notification]] · [[src/PuduLangMediator/_MOC]] · [[subsystems/Notifications]]