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feat(iios): wire projectors + relay into DLQ (P9 chaos-safe)

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Projectors register a replay handler and route bus errors to
dlq.onConsumerFailure (dead-letter + clear the claim-then-fail claim)
instead of swallowing them. Relay dead-letters an outbox event after
IIOS_OUTBOX_MAX_ATTEMPTS instead of retrying forever. Chaos test proves
poison → DLQ → replay resolves while sibling events keep flowing (KG-13/KG-06).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Maaz Ahamed
2026-07-03 01:43:57 +05:30
parent 208fb0b4f0
commit d3d557766e
14 changed files with 128 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
packages/iios-service/src/inbox/inbox.projector.ts
+5 -2
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@@ -3,6 +3,7 @@ import { Prisma } from '@prisma/client';
import { CloudEvent, IIOS_EVENTS } from '@insignia/iios-contracts';
import { PrismaService } from '../prisma/prisma.service';
import { OutboxBus } from '../outbox/outbox.bus';
import { DlqService } from '../outbox/dlq.service';
interface MessageSentData {
interactionId: string;
@@ -28,11 +29,13 @@ export class InboxProjector implements OnModuleInit {
constructor(
private readonly prisma: PrismaService,
private readonly bus: OutboxBus,
private readonly dlq: DlqService,
) {}
onModuleInit(): void {
this.bus.on(IIOS_EVENTS.messageSent, (p) => void this.onMessageSent(p as CloudEvent).catch(() => {}));
this.bus.on(IIOS_EVENTS.messageRead, (p) => void this.onMessageRead(p as CloudEvent).catch(() => {}));
this.dlq.registerHandler(this.consumer, (e) => this.onMessageSent(e));
this.bus.on(IIOS_EVENTS.messageSent, (p) => void this.onMessageSent(p as CloudEvent).catch((err) => this.dlq.onConsumerFailure(this.consumer, p as CloudEvent, err)));
this.bus.on(IIOS_EVENTS.messageRead, (p) => void this.onMessageRead(p as CloudEvent).catch((err) => this.dlq.onConsumerFailure(this.consumer, p as CloudEvent, err)));
}
async onMessageSent(event: CloudEvent): Promise<void> {