Danijel Martinek
ef451de437
TDD: red (test-only), then green. PayloadJobsEventBus validates before enqueueing, names tasks __events.<event>.<consumer> deterministically, and enqueues one task per subscriber via Promise.all. 3 new tests (11 total). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
44 lines
1.5 KiB
TypeScript
44 lines
1.5 KiB
TypeScript
import type { z } from "zod";
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import type { IJobQueue } from "@repo/core-shared/jobs";
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import type { EventDescriptor } from "./event-descriptor";
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import type { EventHandler, IEventBus } from "./event-bus.interface";
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/**
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* Production-grade bus: for each subscriber, enqueues one Payload task per
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* `publish()` call. Subscribers register with their consumer-feature name so
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* fan-out tasks are named deterministically: `__events.<event>.<consumer>`.
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* The actual handler invocation happens inside Payload's job runner — see the
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* matching task config generated by `gen event consume` (Task 39).
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*/
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export class PayloadJobsEventBus implements IEventBus {
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private readonly subscribers = new Map<string, string[]>();
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constructor(private readonly queue: IJobQueue) {}
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async publish<T>(
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descriptor: EventDescriptor<string, z.ZodType<T>>,
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payload: T,
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): Promise<void> {
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descriptor.schema.parse(payload);
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const consumers = this.subscribers.get(descriptor.name) ?? [];
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await Promise.all(
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consumers.map((consumerFeature) =>
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this.queue.enqueue(
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`__events.${descriptor.name}.${consumerFeature}`,
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payload,
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),
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),
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);
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}
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subscribe<T>(
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descriptor: EventDescriptor<string, z.ZodType<T>>,
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consumerFeature: string,
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_handler: EventHandler<T>,
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): void {
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const arr = this.subscribers.get(descriptor.name) ?? [];
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if (!arr.includes(consumerFeature)) arr.push(consumerFeature);
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this.subscribers.set(descriptor.name, arr);
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}
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}
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