wehub-resource-sync
79 lines
2.5 KiB
TypeScript
79 lines
2.5 KiB
TypeScript
import { test } from "node:test";
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import assert from "node:assert/strict";
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import fs from "node:fs";
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import os from "node:os";
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import path from "node:path";
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// DB setup required by createSSEStream (via trackPendingRequest / appendRequestLog)
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const TEST_DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), "omniroute-heap-growth-"));
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process.env.DATA_DIR = TEST_DATA_DIR;
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const core = await import("../../src/lib/db/core.ts");
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const { createSSEStream } = await import("../../open-sse/utils/stream.ts");
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test.after(() => {
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core.resetDbInstance();
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if (fs.existsSync(TEST_DATA_DIR)) {
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fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true });
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}
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});
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const HAS_GC = typeof (globalThis as { gc?: () => void }).gc === "function";
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const enc = new TextEncoder();
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function sseChunks(n: number): Uint8Array[] {
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const parts: Uint8Array[] = [];
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for (let i = 0; i < n; i++) {
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parts.push(
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enc.encode(
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`data: {"id":"chatcmpl","object":"chat.completion.chunk","created":1,"model":"gpt-4o","choices":[{"delta":{"content":"x"},"index":0}]}\n\n`
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)
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);
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}
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parts.push(enc.encode(`data: [DONE]\n\n`));
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return parts;
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}
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async function runOneStream(i: number): Promise<void> {
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const ts = createSSEStream({
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mode: "passthrough",
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clientResponseFormat: "openai",
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connectionId: `heap-${i}`,
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}) as TransformStream<Uint8Array, Uint8Array>;
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const writer = ts.writable.getWriter();
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const reader = ts.readable.getReader();
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const chunks = sseChunks(10);
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const pump = (async () => {
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for (const c of chunks) await writer.write(c);
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await writer.close();
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})();
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for (;;) {
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const { done } = await reader.read();
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if (done) break;
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}
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await pump;
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}
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async function gcSettle(): Promise<void> {
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const gc = (globalThis as { gc?: () => void }).gc!;
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gc();
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await new Promise((r) => setTimeout(r, 50));
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gc();
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}
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test("SSE pipeline does not leak heap across 500 streams", { skip: !HAS_GC }, async () => {
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for (let i = 0; i < 50; i++) await runOneStream(i); // warmup
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await gcSettle();
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const baseline = process.memoryUsage().heapUsed;
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for (let i = 0; i < 500; i++) await runOneStream(i);
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await gcSettle();
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const after = process.memoryUsage().heapUsed;
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const growthMB = (after - baseline) / 1024 / 1024;
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console.log(`[heap] growth=${growthMB.toFixed(2)}MB after 500 streams`);
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// Ceiling is 20MB — goal is detecting linear growth (leaks), not noise.
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// If growth is stably near this boundary, raise to 30MB with justification.
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assert.ok(growthMB < 20, `heap grew ${growthMB.toFixed(1)}MB after 500 streams (ceiling 20MB)`);
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});
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