1212328c8d
The session-store cache used only mtime for invalidation. In fast CI runs (especially under bun), test writes to the session store can complete within the same filesystem mtime granularity (~1s on HFS+/ext4), so the cache returns stale data. This caused non-deterministic failures in model precedence tests where a session override written to disk was not observed by the next loadSessionStore() call. Fix: add file size as a secondary cache invalidation signal. The cache now checks both mtimeMs and sizeBytes — if either differs from the cached values, it reloads from disk. Changes: - cache-utils.ts: add getFileSizeBytes() helper - sessions/store.ts: extend SessionStoreCacheEntry with sizeBytes field, check size in cache-hit path, populate size on cache writes - sessions.cache.test.ts: add regression test for same-mtime rewrite
36 lines
762 B
TypeScript
36 lines
762 B
TypeScript
import fs from "node:fs";
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export function resolveCacheTtlMs(params: {
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envValue: string | undefined;
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defaultTtlMs: number;
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}): number {
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const { envValue, defaultTtlMs } = params;
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if (envValue) {
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const parsed = Number.parseInt(envValue, 10);
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if (Number.isFinite(parsed) && parsed >= 0) {
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return parsed;
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}
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}
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return defaultTtlMs;
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}
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export function isCacheEnabled(ttlMs: number): boolean {
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return ttlMs > 0;
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}
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export function getFileMtimeMs(filePath: string): number | undefined {
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try {
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return fs.statSync(filePath).mtimeMs;
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} catch {
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return undefined;
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}
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}
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export function getFileSizeBytes(filePath: string): number | undefined {
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try {
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return fs.statSync(filePath).size;
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} catch {
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return undefined;
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}
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}
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