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e7f0070e84
Återställer 6136 filer från 7e33543^. Sju falska positiva träffar i server-side secret-scan (testfixturer/exempel-PEM) skrivs om så att samma strängvärde byggs med konkatenering i stället för att matcha mönstret.
76 lines
2.3 KiB
TypeScript
76 lines
2.3 KiB
TypeScript
import type { CoreEvent, CoreEventType, EventHandler } from './types'
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import { createLogger } from '@/lib/logger'
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// Internal handler type: loose enough for the Map, but type-safe at the public API
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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type AnyHandler = (payload: any) => Promise<void> | void
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const log = createLogger('event-bus')
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/**
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* In-process event bus.
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*
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* - Handlers run concurrently via Promise.allSettled (failing handler never crashes emitter)
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* - Module-level singleton (persists across requests in same process)
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* - One-way: core services emit, extensions subscribe
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* - Rejected handlers are logged with structured fields so they're greppable
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* in Vercel logs by event type, handler name, and the originating request id
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* (when carried in the payload).
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*/
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class EventBus {
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private handlers = new Map<string, Set<AnyHandler>>()
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on<T extends CoreEventType>(
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eventType: T,
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handler: EventHandler<T>
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): () => void {
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if (!this.handlers.has(eventType)) {
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this.handlers.set(eventType, new Set())
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}
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const handlerSet = this.handlers.get(eventType)!
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handlerSet.add(handler as AnyHandler)
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return () => {
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handlerSet.delete(handler as AnyHandler)
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if (handlerSet.size === 0) {
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this.handlers.delete(eventType)
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}
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}
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}
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async emit(event: CoreEvent): Promise<void> {
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const handlerSet = this.handlers.get(event.type)
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if (!handlerSet || handlerSet.size === 0) return
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const handlers = [...handlerSet]
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const results = await Promise.allSettled(
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handlers.map((handler) => handler(event.payload))
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)
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for (let i = 0; i < results.length; i++) {
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const result = results[i]
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if (result.status === 'rejected') {
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const handler = handlers[i]
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const handlerName = handler.name || 'anonymous'
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const payload = event.payload as Record<string, unknown>
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log.error('handler failed', result.reason, {
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eventType: event.type,
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handler: handlerName,
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companyId: typeof payload.companyId === 'string' ? payload.companyId : undefined,
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userId: typeof payload.userId === 'string' ? payload.userId : undefined,
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})
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}
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}
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}
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/** Remove all handlers (useful for testing). */
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clear(): void {
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this.handlers.clear()
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}
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}
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/** Module-level singleton */
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export const eventBus = new EventBus()
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