Method recordUsage

src/telemetry/index.ts:236–253

In-memory increment — safe on the MCP tool-call hot path.

(kind: UsageKind, name: string, ok: boolean, client?: ClientInfo)

  /** In-memory increment — safe on the MCP tool-call hot path. */
  recordUsage(kind: UsageKind, name: string, ok: boolean, client?: ClientInfo): void {
    if (!this.isEnabled()) return;
    const day = this.utcDay();
    const cn = client?.name?.slice(0, 64);
    const cv = client?.version?.slice(0, 32);
    const key = [day, kind, name, cn ?? '', cv ?? ''].join('');
    const line = this.counts.get(key);
    if (line) {
      line.c += 1;
      if (!ok) line.e += 1;
    } else {
      const fresh: CountLine = { v: SCHEMA_VERSION, d: day, k: kind, n: name.slice(0, 64), c: 1, e: ok ? 0 : 1 };
      if (cn) fresh.cn = cn;
      if (cv) fresh.cv = cv;
      this.counts.set(key, fresh);
    }
    this.ensureExitHook();
  }

  /** install / index / uninstall — buffered like everything else. */
  recordLifecycle(event: LifecycleEvent, props: Record<string, unknown>): void {