PuduLangMediator.Sender

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

Purpose

What a component that only sends requests and streams depends on: a trait the mediator implements, so a test double stands in for it.

Interface

Signatures

export trait Sender {
  fn send[Q, R, E](self: &Self, subject: &Request.Kind[Q, R, E], request: Q, context: Context.Context) -> Messaging.Outcome[R, E]
  fn dispatch(self: &Self, envelope: Message.Envelope, context: Context.Context) -> Message.Answer
  fn stream[Q, T, E](self: &Self, subject: &Stream.Kind[Q, T, E], request: Q, context: Context.Context, sink: Stream.Sink[T]) -> Messaging.Outcome[(), E]
}

Implementations

• impl Sender for Mediator.Mediator

Linkage

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

Algorithm

1. Mediator.Mediator implements it by delegating to sendWith, dispatchWith, and streamWith.

Negative Logic (Prohibited Paths)

• A component holding a dynamic Sender cannot publish.

Edge Cases

• A double may answer anything without a mediator.

Depth

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

Grill Log

• Q: Why a trait and not the mediator type itself? A: Narrow dependencies document what a component does and make it testable without building a mediator. _Rejected:_ passing the mediator everywhere.

Referenced by

[[CHANGELOG]] · [[seams/Sender]] · [[src/PuduLangMediator]] · [[src/PuduLangMediator/Context]] · [[src/PuduLangMediator/Mediator]] · [[src/PuduLangMediator/Message]] · [[src/PuduLangMediator/Request]] · [[src/PuduLangMediator/Stream]] · [[src/PuduLangMediator/_MOC]] · [[subsystems/Requests]]