wehub-resource-sync
48 lines
1.3 KiB
TypeScript
48 lines
1.3 KiB
TypeScript
// DRY: shared between /api/cli-tools/status and /api/cli-tools/all-statuses (plan 14 F2)
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// In-memory mtime-based cache for batch CLI tool status results.
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// Cache invalidated when mtime changes. Lives until server restart (no TTL).
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import type { ToolBatchStatus } from "@/shared/types/cliBatchStatus";
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export interface CacheEntry {
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mtimeMs: number;
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result: ToolBatchStatus;
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}
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/** Singleton in-memory cache: toolId → { mtimeMs, result } */
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const _cache = new Map<string, CacheEntry>();
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/**
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* Get cached result for a toolId if mtime matches.
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* Returns null if:
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* - entry doesn't exist
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* - stored mtimeMs !== provided mtimeMs (config file changed)
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*/
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export function getCached(toolId: string, mtimeMs: number): ToolBatchStatus | null {
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const entry = _cache.get(toolId);
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if (!entry) return null;
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if (entry.mtimeMs !== mtimeMs) return null;
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return entry.result;
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}
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/**
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* Store a result in the cache for a toolId with its mtime.
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*/
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export function setCached(toolId: string, mtimeMs: number, result: ToolBatchStatus): void {
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_cache.set(toolId, { mtimeMs, result });
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}
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/**
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* Remove a specific toolId from the cache (e.g. after config write).
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*/
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export function invalidate(toolId: string): void {
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_cache.delete(toolId);
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}
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/**
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* Clear all cached entries. Primarily for testing isolation.
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*/
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export function clearCache(): void {
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_cache.clear();
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}
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