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Closes gap-analysis v2 §7.3 and §10.3. - New services/eventBusBroker.ts: per-process singleton with unique instanceId; subscribes to a Redis pub/sub channel (default ccombo:events) and re-emits inbound records on the in-process EventEmitter. Outbound envelopes carry the instanceId so the originating replica drops its own echo. - eventBus.publish() hands every persisted record to the broker after the local emit, so same-process SSE subscribers see zero change while remote-replica subscribers now receive every event. - When REDIS_URL is unset the broker is strictly inert (no connect, no publish) — single-process behaviour is preserved byte-for-byte. - 3 unit tests for feature-flag semantics; full suite 83/83 green. - Live Redis behaviour will be covered by the Testcontainers suite in PR Q.
65 lines
2.0 KiB
TypeScript
65 lines
2.0 KiB
TypeScript
/**
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* Tests for the Redis-backed cross-replica broker (gap v2 §7.3 / §10.3).
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*
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* These tests exercise the broker's feature-flag semantics without
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* spinning up a real Redis: when `REDIS_URL` is unset the broker must
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* be strictly inert. Live Redis behaviour is covered in the integration
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* suite (PR Q).
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*/
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import { EventEmitter } from "events";
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import { getBroker, __resetBrokerForTests } from "../../src/services/eventBusBroker";
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import type { EventRecord } from "../../src/services/eventBus";
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describe("eventBusBroker (feature flag)", () => {
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const savedEnv = { ...process.env };
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beforeEach(() => {
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process.env = { ...savedEnv };
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__resetBrokerForTests();
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});
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afterEach(() => {
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__resetBrokerForTests();
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process.env = { ...savedEnv };
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});
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it("is inert when REDIS_URL is unset", async () => {
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delete process.env.REDIS_URL;
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const emitter = new EventEmitter();
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const broker = getBroker(emitter);
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expect(broker.enabled).toBe(false);
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expect(typeof broker.instanceId).toBe("string");
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const rec: EventRecord = {
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id: "00000000-0000-0000-0000-000000000001",
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plan_id: "11111111-1111-1111-1111-111111111111",
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type: "transaction.created",
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actor: null,
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payload: {},
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payload_hash: "h",
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prev_hash: null,
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signature: "s",
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created_at: new Date().toISOString(),
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};
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await expect(broker.publish(rec)).resolves.toBeUndefined();
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await expect(broker.close()).resolves.toBeUndefined();
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});
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it("returns a stable singleton within a process", () => {
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delete process.env.REDIS_URL;
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const emitter = new EventEmitter();
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const a = getBroker(emitter);
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const b = getBroker(emitter);
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expect(a).toBe(b);
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});
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it("generates a unique instanceId per process", () => {
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delete process.env.REDIS_URL;
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const emitter = new EventEmitter();
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const a = getBroker(emitter).instanceId;
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__resetBrokerForTests();
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const b = getBroker(emitter).instanceId;
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expect(a).not.toEqual(b);
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});
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});
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