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Drop stale backlog events from /ws/live fanout

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This commit is contained in:
dirtydishes 2026-04-28 17:26:48 -04:00
parent 75fc6f9373
commit 89aaf63d34
4 changed files with 61 additions and 10 deletions
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29
services/api/tests/live.test.ts
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@ -1,6 +1,6 @@
import { describe, expect, it } from "bun:test";
import type { ClickHouseClient } from "@islandflow/storage";
import { LiveStateManager, resolveGenericLiveLimits } from "../src/live";
import { LiveStateManager, isLiveItemFresh, resolveGenericLiveLimits } from "../src/live";
const makeClickHouse = (): ClickHouseClient =>
({
@ -475,4 +475,31 @@ describe("LiveStateManager", () => {
["MSFT-2025-01-17-300-C", "nbbo-other"]
]);
});
it("rejects stale ingest for freshness-gated channels", async () => {
const manager = new LiveStateManager(makeClickHouse(), null);
const now = Date.now();
await manager.ingest("equities", {
source_ts: now - 60_000,
ingest_ts: now - 59_999,
seq: 1,
trace_id: "eq-stale",
ts: now - 60_000,
underlying_id: "AAPL",
price: 100,
size: 10,
exchange: "X",
offExchangeFlag: false
});
const snapshot = await manager.getSnapshot({ channel: "equities" });
expect(snapshot.items).toHaveLength(0);
});
it("exposes freshness helper for event fanout gating", () => {
expect(isLiveItemFresh("options", { ts: 1000 }, 1010)).toBe(true);
expect(isLiveItemFresh("options", { ts: 1000 }, 20_001)).toBe(false);
expect(isLiveItemFresh("equity-joins", { source_ts: 1 }, 1_000_000)).toBe(true);
});
});