lyon
718 lines
31 KiB
TypeScript
718 lines
31 KiB
TypeScript
// SPEC: PJ2026-01060505 Workbench Performance draft-2026-06-17-p0
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// Keeps browser-reported performance metrics low-cardinality before Prometheus export.
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const DEFAULT_WEB_PERFORMANCE_BODY_LIMIT_BYTES = 64 * 1024;
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const DURATION_BUCKETS_SECONDS = [0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10, 30];
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const CLS_BUCKETS = [0.01, 0.05, 0.1, 0.25, 0.5, 1, 2.5];
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const WORKBENCH_JOURNEY_BUCKETS_SECONDS = [0.05, 0.1, 0.25, 0.5, 1, 2, 3, 5, 8, 13, 21, 30, 60, 120];
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const WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS = [0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10];
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const ALLOWED_KINDS = new Set(["navigation", "web_vital", "api", "long_task", "workbench_journey", "workbench_event_phase", "workbench_backend_event_visible"]);
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const DURATION_METRICS = new Set([
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"navigation_ttfb",
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"navigation_dom_content_loaded",
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"navigation_load",
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"lcp",
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"inp",
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"fid",
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"api_request",
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"long_task"
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]);
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const WORKBENCH_SCHEMA_VERSION = "hwlab-web-performance-v2";
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const WORKBENCH_JOURNEYS = new Set([
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"submit_to_first_visible",
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"backend_event_to_visible",
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"session_switch_first_visible",
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"session_switch_full_load",
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"workbench_open_first_visible",
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"workbench_open_full_load"
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]);
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const WORKBENCH_EVENT_PHASES = new Set([
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"created_to_append",
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"append_to_sse",
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"sse_to_receive",
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"receive_to_project",
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"project_to_paint",
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"user_submit_to_api_accepted",
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"api_accepted_to_backend_event"
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]);
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const WORKBENCH_EVENT_TYPES = new Set(["assistant", "tool_call", "backend", "terminal", "error", "status", "request", "result", "unknown"]);
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const WORKBENCH_TRANSPORTS = new Set(["sse", "rest_gap", "poll", "none", "unknown"]);
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const WORKBENCH_OUTCOMES = new Set(["ok", "timeout", "error", "dropped", "stale", "partial", "empty", "network", "denied", "unknown"]);
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const WORKBENCH_ENTRIES = new Set(["new", "existing", "steer", "retry", "unknown"]);
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const WORKBENCH_VISIBILITY = new Set(["foreground", "background", "hidden", "unknown"]);
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const WORKBENCH_CACHE_STATES = new Set(["warm", "cold", "unknown"]);
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const WORKBENCH_TARGET_STATES = new Set(["running", "terminal", "empty", "unknown"]);
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const WORKBENCH_SOURCES = new Set(["rail", "deeplink", "history", "direct", "hydrate", "unknown"]);
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const WORKBENCH_AUTH_STATES = new Set(["warm", "login_redirect", "unknown"]);
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interface WebPerformanceStoreOptions {
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env?: Record<string, unknown>;
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maxSeries?: number;
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}
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interface WebPerformancePayload {
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schemaVersion?: unknown;
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serviceId?: unknown;
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page?: unknown;
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events?: unknown;
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}
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interface WebPerformanceEvent {
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kind?: unknown;
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metric?: unknown;
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journey?: unknown;
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phase?: unknown;
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eventType?: unknown;
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backend?: unknown;
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transport?: unknown;
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entry?: unknown;
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visibility?: unknown;
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cache?: unknown;
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targetState?: unknown;
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source?: unknown;
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authState?: unknown;
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route?: unknown;
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valueMs?: unknown;
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value?: unknown;
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method?: unknown;
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status?: unknown;
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statusClass?: unknown;
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outcome?: unknown;
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}
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interface NormalizedPerformanceEvent {
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series: "web_duration" | "layout_shift" | "workbench_journey" | "workbench_event_phase" | "workbench_backend_event_visible";
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metric: string;
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value: number;
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labels: Record<string, string>;
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counterLabels?: Record<string, string>;
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}
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interface HistogramSeries {
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labels: Record<string, string>;
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buckets: number[];
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sum: number;
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count: number;
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}
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interface CounterSeries {
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labels: Record<string, string>;
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value: number;
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}
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interface PerformanceSummaryRow {
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kind: string;
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metric: string;
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route: string;
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method: string;
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statusClass: string;
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outcome: string;
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count: number;
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average: number;
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p50: number;
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p95: number;
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unit: "seconds" | "score";
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tone: "ok" | "warn" | "blocked" | "source";
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problem: string;
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}
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export function createWebPerformanceStore(options: WebPerformanceStoreOptions = {}) {
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const env = options.env ?? process.env;
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const maxSeries = parsePositiveInteger(env.HWLAB_WEB_PERFORMANCE_MAX_SERIES, options.maxSeries ?? 240);
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const durationSeries = new Map<string, HistogramSeries>();
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const clsSeries = new Map<string, HistogramSeries>();
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const sampleSeries = new Map<string, CounterSeries>();
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const droppedSeries = new Map<string, CounterSeries>();
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const journeyDurationSeries = new Map<string, HistogramSeries>();
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const journeyTotalSeries = new Map<string, CounterSeries>();
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const eventPhaseSeries = new Map<string, HistogramSeries>();
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const backendEventVisibleSeries = new Map<string, HistogramSeries>();
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const baseLabels = {
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service: "hwlab-cloud-web",
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namespace: sanitizeLabelValue(env.HWLAB_METRICS_NAMESPACE ?? env.POD_NAMESPACE ?? "hwlab-v02"),
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gitops_target: sanitizeLabelValue(env.HWLAB_GITOPS_TARGET ?? env.HWLAB_GITOPS_PROFILE ?? "v02")
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};
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function record(payload: WebPerformancePayload) {
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const events = Array.isArray(payload.events) ? payload.events.slice(0, 80) : [];
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let accepted = 0;
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let dropped = 0;
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for (const rawEvent of events) {
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const event = normalizeEvent(rawEvent, payload);
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if (!event) {
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incrementDropped("invalid_event");
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dropped += 1;
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continue;
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}
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if (!recordNormalizedEvent(event)) {
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incrementDropped("series_limit");
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dropped += 1;
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continue;
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}
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accepted += 1;
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}
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return { accepted, dropped, received: events.length };
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}
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function normalizeEvent(rawEvent: unknown, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
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if (!rawEvent || typeof rawEvent !== "object" || Array.isArray(rawEvent)) return null;
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const input = rawEvent as WebPerformanceEvent;
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const kind = sanitizeMetricName(input.kind, "unknown");
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if (!ALLOWED_KINDS.has(kind)) return null;
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if (kind === "workbench_journey") return normalizeWorkbenchJourneyEvent(input, payload);
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if (kind === "workbench_event_phase") return normalizeWorkbenchEventPhase(input, payload);
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if (kind === "workbench_backend_event_visible") return normalizeWorkbenchBackendEventVisible(input, payload);
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const metric = sanitizeMetricName(input.metric, "unknown");
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const isCls = metric === "cls";
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if (!isCls && !DURATION_METRICS.has(metric)) return null;
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const rawValue = isCls ? finiteNumber(input.value, NaN) : finiteNumber(input.valueMs, NaN) / 1000;
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if (!Number.isFinite(rawValue) || rawValue < 0) return null;
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const value = isCls ? Math.min(rawValue, 10) : Math.min(rawValue, 120);
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const route = webPerformanceRouteTemplate(input.route ?? payload.page ?? "/workspace");
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const pageRoute = webPerformanceRouteTemplate(payload.page ?? "/workspace");
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if (isObservabilityNoise({ kind, metric, route, pageRoute })) return null;
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const labels = {
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...baseLabels,
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kind,
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metric,
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route,
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method: normalizeMethod(input.method),
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status_class: normalizeStatusClass(input.statusClass ?? (input.status === undefined || input.status === null ? "unknown" : statusClass(input.status))),
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outcome: sanitizeLabelValue(input.outcome ?? "ok", "ok")
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};
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return { series: isCls ? "layout_shift" : "web_duration", metric, value, labels, counterLabels: sampleLabels(labels) };
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}
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function normalizeWorkbenchJourneyEvent(input: WebPerformanceEvent, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
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if (String(payload.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return null;
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const journey = requiredEnum(input.journey ?? input.metric, WORKBENCH_JOURNEYS);
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if (!journey) return null;
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const value = durationValueSeconds(input.valueMs, 120);
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if (value === null) return null;
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const route = webPerformanceRouteTemplate(input.route ?? payload.page ?? "/workbench");
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const pageRoute = webPerformanceRouteTemplate(payload.page ?? "/workbench");
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if (isObservabilityNoise({ kind: "workbench_journey", metric: journey, route, pageRoute })) return null;
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const labels = {
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...baseLabels,
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journey,
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route,
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entry: optionalEnum(input.entry, WORKBENCH_ENTRIES, "unknown"),
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source: optionalEnum(input.source, WORKBENCH_SOURCES, "unknown"),
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target_state: optionalEnum(input.targetState ?? field(input, "target_state"), WORKBENCH_TARGET_STATES, "unknown"),
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cache: optionalEnum(input.cache, WORKBENCH_CACHE_STATES, "unknown"),
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auth_state: optionalEnum(input.authState ?? field(input, "auth_state"), WORKBENCH_AUTH_STATES, "unknown"),
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backend: normalizeBackendLabel(input.backend),
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transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
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visibility: optionalEnum(input.visibility, WORKBENCH_VISIBILITY, "unknown"),
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outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
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};
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return { series: "workbench_journey", metric: journey, value, labels, counterLabels: labels };
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}
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function normalizeWorkbenchEventPhase(input: WebPerformanceEvent, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
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if (String(payload.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return null;
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const phase = requiredEnum(input.phase ?? input.metric, WORKBENCH_EVENT_PHASES);
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if (!phase) return null;
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const value = durationValueSeconds(input.valueMs, 30);
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if (value === null) return null;
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const labels = {
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...baseLabels,
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phase,
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event_type: normalizeEventType(input.eventType ?? field(input, "event_type")),
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backend: normalizeBackendLabel(input.backend),
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transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
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outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
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};
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return { series: "workbench_event_phase", metric: phase, value, labels };
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}
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function normalizeWorkbenchBackendEventVisible(input: WebPerformanceEvent, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
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if (String(payload.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return null;
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const value = durationValueSeconds(input.valueMs, 120);
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if (value === null) return null;
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const labels = {
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...baseLabels,
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event_type: normalizeEventType(input.eventType ?? field(input, "event_type")),
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backend: normalizeBackendLabel(input.backend),
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transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
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outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
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};
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return { series: "workbench_backend_event_visible", metric: "backend_event_to_visible", value, labels };
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}
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function recordNormalizedEvent(event: NormalizedPerformanceEvent) {
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if (event.series === "layout_shift") return recordHistogramWithCounter(clsSeries, sampleSeries, event.labels, event.counterLabels ?? sampleLabels(event.labels), event.value, CLS_BUCKETS);
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if (event.series === "web_duration") return recordHistogramWithCounter(durationSeries, sampleSeries, event.labels, event.counterLabels ?? sampleLabels(event.labels), event.value, DURATION_BUCKETS_SECONDS);
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if (event.series === "workbench_journey") return recordHistogramWithCounter(journeyDurationSeries, journeyTotalSeries, event.labels, event.counterLabels ?? event.labels, event.value, WORKBENCH_JOURNEY_BUCKETS_SECONDS);
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if (event.series === "workbench_event_phase") return recordHistogram(eventPhaseSeries, event.labels, event.value, WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS, maxSeries);
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return recordHistogram(backendEventVisibleSeries, event.labels, event.value, WORKBENCH_JOURNEY_BUCKETS_SECONDS, maxSeries);
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}
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function recordHistogramWithCounter(histograms: Map<string, HistogramSeries>, counters: Map<string, CounterSeries>, histogramLabels: Record<string, string>, counterLabels: Record<string, string>, value: number, buckets: number[]) {
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if (!canRecordSeries(histograms, histogramLabels, maxSeries) || !canRecordSeries(counters, counterLabels, maxSeries)) return false;
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recordHistogram(histograms, histogramLabels, value, buckets, maxSeries);
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incrementCounter(counters, counterLabels, maxSeries);
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return true;
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}
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function incrementDropped(reason: string) {
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incrementCounter(droppedSeries, { ...baseLabels, reason }, Math.max(maxSeries, 16));
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}
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function metricsText() {
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const lines = [
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"# HELP hwlab_webui_performance_sample_total Browser-observed HWLAB Cloud Web performance samples accepted by cloud-api.",
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"# TYPE hwlab_webui_performance_sample_total counter",
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...renderCounters("hwlab_webui_performance_sample_total", sampleSeries),
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"# HELP hwlab_webui_performance_duration_seconds Browser-observed HWLAB Cloud Web duration metrics in seconds.",
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"# TYPE hwlab_webui_performance_duration_seconds histogram",
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...renderHistogram("hwlab_webui_performance_duration_seconds", durationSeries, DURATION_BUCKETS_SECONDS),
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"# HELP hwlab_webui_layout_shift_score Browser-observed cumulative layout shift score.",
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"# TYPE hwlab_webui_layout_shift_score histogram",
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...renderHistogram("hwlab_webui_layout_shift_score", clsSeries, CLS_BUCKETS),
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"# HELP hwlab_webui_performance_dropped_total Browser performance samples dropped before Prometheus export.",
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"# TYPE hwlab_webui_performance_dropped_total counter",
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...renderCounters("hwlab_webui_performance_dropped_total", droppedSeries),
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"# HELP hwlab_workbench_journey_total Browser-observed HWLAB Workbench journey samples accepted by cloud-api.",
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"# TYPE hwlab_workbench_journey_total counter",
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...renderCounters("hwlab_workbench_journey_total", journeyTotalSeries),
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"# HELP hwlab_workbench_journey_duration_seconds Browser-observed HWLAB Workbench user-visible journey durations in seconds.",
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"# TYPE hwlab_workbench_journey_duration_seconds histogram",
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...renderHistogram("hwlab_workbench_journey_duration_seconds", journeyDurationSeries, WORKBENCH_JOURNEY_BUCKETS_SECONDS),
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"# HELP hwlab_workbench_event_phase_duration_seconds Browser/backend phase durations for HWLAB Workbench events in seconds.",
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"# TYPE hwlab_workbench_event_phase_duration_seconds histogram",
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...renderHistogram("hwlab_workbench_event_phase_duration_seconds", eventPhaseSeries, WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS),
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"# HELP hwlab_workbench_backend_event_visible_latency_seconds Agent backend event generated to browser-visible latency in seconds.",
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"# TYPE hwlab_workbench_backend_event_visible_latency_seconds histogram",
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...renderHistogram("hwlab_workbench_backend_event_visible_latency_seconds", backendEventVisibleSeries, WORKBENCH_JOURNEY_BUCKETS_SECONDS),
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""
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];
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return lines.join("\n");
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}
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function summary() {
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const durationRows = histogramSummaryRows(durationSeries, DURATION_BUCKETS_SECONDS, "seconds");
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const clsRows = histogramSummaryRows(clsSeries, CLS_BUCKETS, "score");
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const rows = [...durationRows, ...clsRows];
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const apiRoutes = durationRows
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.filter((row) => row.metric === "api_request")
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.sort(sortByProblemThenP95)
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.slice(0, 12);
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const webVitals = rows
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.filter((row) => row.kind === "web_vital" || row.metric.startsWith("navigation_"))
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.sort(sortByProblemThenP95)
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.slice(0, 12);
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const longTasks = durationRows
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.filter((row) => row.metric === "long_task")
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.sort(sortByProblemThenP95)
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.slice(0, 12);
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const problems = rows
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.filter((row) => row.tone === "blocked" || row.tone === "warn" || row.outcome !== "ok")
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.sort(sortByProblemThenP95)
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.slice(0, 16);
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const sampleCount = [...sampleSeries.values()].reduce((sum, entry) => sum + entry.value, 0);
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const workbenchSampleCount = [...journeyTotalSeries.values()].reduce((sum, entry) => sum + entry.value, 0)
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+ histogramSampleCount(eventPhaseSeries)
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+ histogramSampleCount(backendEventVisibleSeries);
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return {
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serviceId: "hwlab-cloud-api",
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route: "/v1/web-performance/summary",
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source: "cloud-api-rum-store",
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observedAt: new Date().toISOString(),
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namespace: baseLabels.namespace,
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gitopsTarget: baseLabels.gitops_target,
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summary: {
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sampleCount: sampleCount + workbenchSampleCount,
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sampleSeries: sampleSeries.size,
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durationSeries: durationSeries.size,
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clsSeries: clsSeries.size,
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droppedSeries: droppedSeries.size,
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workbenchJourneySeries: journeyDurationSeries.size,
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workbenchEventPhaseSeries: eventPhaseSeries.size,
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workbenchBackendEventVisibleSeries: backendEventVisibleSeries.size,
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routeCount: new Set(rows.map((row) => row.route)).size,
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problemCount: problems.length,
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status: sampleCount === 0 ? "waiting" : sampleCount < 10 ? "warming" : problems.length > 0 ? "watch" : "ok"
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},
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apiRoutes,
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webVitals,
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longTasks,
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problems,
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rows: rows.sort(sortByProblemThenP95).slice(0, 40)
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};
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}
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function snapshot() {
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return {
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sampleSeries: sampleSeries.size,
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durationSeries: durationSeries.size,
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clsSeries: clsSeries.size,
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droppedSeries: droppedSeries.size,
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workbenchJourneySeries: journeyDurationSeries.size,
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workbenchEventPhaseSeries: eventPhaseSeries.size,
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workbenchBackendEventVisibleSeries: backendEventVisibleSeries.size,
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sampleCount: [...sampleSeries.values()].reduce((sum, entry) => sum + entry.value, 0)
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+ [...journeyTotalSeries.values()].reduce((sum, entry) => sum + entry.value, 0)
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+ histogramSampleCount(eventPhaseSeries)
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+ histogramSampleCount(backendEventVisibleSeries)
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};
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}
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return { record, metricsText, snapshot, summary };
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}
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export async function handleWebPerformanceIngestHttp(request, response, options = {}) {
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const body = await readBody(request, options.bodyLimitBytes ?? DEFAULT_WEB_PERFORMANCE_BODY_LIMIT_BYTES);
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let payload;
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try {
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payload = body ? JSON.parse(body) : {};
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} catch (error) {
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sendJson(response, 400, { accepted: false, error: { code: "parse_error", message: "Invalid web performance JSON body", reason: error.message } });
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return;
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}
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if (!payload || typeof payload !== "object" || Array.isArray(payload)) {
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sendJson(response, 400, { accepted: false, error: { code: "invalid_params", message: "web performance body must be a JSON object" } });
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return;
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}
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const result = options.store.record(payload);
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sendJson(response, 202, { accepted: true, ...result });
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}
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export function handleWebPerformanceMetricsHttp(request, response, options = {}) {
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if (!isLoopbackMetricsRequest(request)) {
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sendJson(response, 404, { error: { code: "not_found", message: "route is not public" } });
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return;
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}
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const primary = String(options.store.metricsText() ?? "").trimEnd();
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const extra = typeof options.extraMetricsText === "function"
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? String(options.extraMetricsText() ?? "").trimEnd()
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: String(options.extraMetricsText ?? "").trimEnd();
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const payload = [primary, extra].filter(Boolean).join("\n") + "\n";
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response.writeHead(200, {
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"content-type": "text/plain; version=0.0.4; charset=utf-8",
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"content-length": Buffer.byteLength(payload)
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});
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response.end(payload);
|
|
}
|
|
|
|
export function handleWebPerformanceSummaryHttp(_request, response, options = {}) {
|
|
sendJson(response, 200, options.store.summary());
|
|
}
|
|
|
|
export function webPerformanceRouteTemplate(input: unknown): string {
|
|
const raw = String(input ?? "").trim() || "/";
|
|
const normalizedRaw = raw.startsWith("#") ? raw.slice(1) || "/" : raw;
|
|
const pathOnly = normalizedRaw.split(/[?#]/u, 1)[0] || "/";
|
|
let pathname = pathOnly;
|
|
try {
|
|
pathname = new URL(normalizedRaw, "http://hwlab.local").pathname || pathOnly;
|
|
} catch {
|
|
// Keep pathOnly.
|
|
}
|
|
const parts = pathname.split("/").filter(Boolean).map((part) => routeSegmentTemplate(safeDecode(part)));
|
|
const path = `/${parts.join("/")}`;
|
|
return path.length > 120 ? `${path.slice(0, 117)}...` : path;
|
|
}
|
|
|
|
function sampleLabels(labels: Record<string, string>) {
|
|
return {
|
|
service: labels.service,
|
|
namespace: labels.namespace,
|
|
gitops_target: labels.gitops_target,
|
|
kind: labels.kind,
|
|
metric: labels.metric,
|
|
route: labels.route,
|
|
method: labels.method,
|
|
status_class: labels.status_class,
|
|
outcome: labels.outcome
|
|
};
|
|
}
|
|
|
|
function isObservabilityNoise(event: { kind: string; metric: string; route: string; pageRoute: string }) {
|
|
if (event.pageRoute === "/performance") return true;
|
|
if (event.route === "/performance" && (event.kind === "navigation" || event.kind === "web_vital" || event.kind === "long_task")) return true;
|
|
return event.route === "/v1/web-performance" || event.route.startsWith("/v1/web-performance/");
|
|
}
|
|
|
|
function canRecordSeries(series: Map<string, HistogramSeries | CounterSeries>, labels: Record<string, string>, maxSeries: number) {
|
|
const key = stableLabelKey(labels);
|
|
return series.has(key) || series.size < maxSeries;
|
|
}
|
|
|
|
function recordHistogram(series: Map<string, HistogramSeries>, labels: Record<string, string>, value: number, buckets: number[], maxSeries: number) {
|
|
const key = stableLabelKey(labels);
|
|
let entry = series.get(key);
|
|
if (!entry) {
|
|
if (series.size >= maxSeries) return false;
|
|
entry = { labels, buckets: buckets.map(() => 0), sum: 0, count: 0 };
|
|
series.set(key, entry);
|
|
}
|
|
for (let index = 0; index < buckets.length; index += 1) {
|
|
if (value <= buckets[index]) entry.buckets[index] += 1;
|
|
}
|
|
entry.sum += value;
|
|
entry.count += 1;
|
|
return true;
|
|
}
|
|
|
|
function incrementCounter(series: Map<string, CounterSeries>, labels: Record<string, string>, maxSeries: number) {
|
|
const key = stableLabelKey(labels);
|
|
let entry = series.get(key);
|
|
if (!entry) {
|
|
if (series.size >= maxSeries) return false;
|
|
entry = { labels, value: 0 };
|
|
series.set(key, entry);
|
|
}
|
|
entry.value += 1;
|
|
return true;
|
|
}
|
|
|
|
function histogramSampleCount(series: Map<string, HistogramSeries>) {
|
|
return [...series.values()].reduce((sum, entry) => sum + entry.count, 0);
|
|
}
|
|
|
|
function renderCounters(metricName: string, series: Map<string, CounterSeries>) {
|
|
return [...series.values()].map((entry) => `${metricName}{${renderLabels(entry.labels)}} ${entry.value}`);
|
|
}
|
|
|
|
function renderHistogram(metricName: string, series: Map<string, HistogramSeries>, buckets: number[]) {
|
|
const lines: string[] = [];
|
|
for (const entry of series.values()) {
|
|
for (let index = 0; index < buckets.length; index += 1) {
|
|
lines.push(`${metricName}_bucket{${renderLabels({ ...entry.labels, le: String(buckets[index]) })}} ${entry.buckets[index]}`);
|
|
}
|
|
lines.push(`${metricName}_bucket{${renderLabels({ ...entry.labels, le: "+Inf" })}} ${entry.count}`);
|
|
lines.push(`${metricName}_sum{${renderLabels(entry.labels)}} ${entry.sum.toFixed(6)}`);
|
|
lines.push(`${metricName}_count{${renderLabels(entry.labels)}} ${entry.count}`);
|
|
}
|
|
return lines;
|
|
}
|
|
|
|
function histogramSummaryRows(series: Map<string, HistogramSeries>, buckets: number[], unit: "seconds" | "score"): PerformanceSummaryRow[] {
|
|
return [...series.values()].map((entry) => {
|
|
const labels = entry.labels;
|
|
const count = entry.count;
|
|
const average = count > 0 ? entry.sum / count : 0;
|
|
const p50 = histogramQuantile(entry, buckets, 0.5);
|
|
const p95 = histogramQuantile(entry, buckets, 0.95);
|
|
const tone = performanceTone(labels, p95, count, unit);
|
|
return {
|
|
kind: labels.kind,
|
|
metric: labels.metric,
|
|
route: labels.route,
|
|
method: labels.method,
|
|
statusClass: labels.status_class,
|
|
outcome: labels.outcome,
|
|
count,
|
|
average: roundMetric(average),
|
|
p50: roundMetric(p50),
|
|
p95: roundMetric(p95),
|
|
unit,
|
|
tone,
|
|
problem: performanceProblem(labels, p95, count, unit, tone)
|
|
};
|
|
});
|
|
}
|
|
|
|
function histogramQuantile(entry: HistogramSeries, buckets: number[], quantile: number) {
|
|
if (entry.count <= 0) return 0;
|
|
const rank = Math.max(1, Math.ceil(entry.count * quantile));
|
|
for (let index = 0; index < entry.buckets.length; index += 1) {
|
|
if (entry.buckets[index] >= rank) return buckets[index];
|
|
}
|
|
return buckets[buckets.length - 1] ?? 0;
|
|
}
|
|
|
|
function performanceTone(labels: Record<string, string>, p95: number, count: number, unit: "seconds" | "score") {
|
|
if (labels.outcome !== "ok" || labels.status_class === "network" || labels.status_class === "5xx") return "blocked";
|
|
if (labels.status_class === "4xx") return "warn";
|
|
if (count <= 0) return "source";
|
|
const metric = labels.metric;
|
|
if (unit === "score") {
|
|
if (p95 >= 0.25) return "blocked";
|
|
if (p95 >= 0.1) return "warn";
|
|
return "ok";
|
|
}
|
|
if (metric === "lcp") return thresholdTone(p95, 2.5, 4);
|
|
if (metric === "inp" || metric === "fid") return thresholdTone(p95, 0.2, 0.5);
|
|
if (metric === "api_request") return thresholdTone(p95, 1, 2.5);
|
|
if (metric === "long_task") return thresholdTone(p95, 0.2, 0.5);
|
|
if (metric === "navigation_dom_content_loaded") return thresholdTone(p95, 2, 4);
|
|
if (metric === "navigation_load") return thresholdTone(p95, 3, 6);
|
|
if (metric === "navigation_ttfb") return thresholdTone(p95, 0.8, 1.8);
|
|
return p95 > 1 ? "warn" : "ok";
|
|
}
|
|
|
|
function thresholdTone(value: number, warn: number, blocked: number) {
|
|
if (value >= blocked) return "blocked";
|
|
if (value >= warn) return "warn";
|
|
return "ok";
|
|
}
|
|
|
|
function performanceProblem(labels: Record<string, string>, p95: number, count: number, unit: "seconds" | "score", tone: string) {
|
|
if (count <= 0) return "no-sample";
|
|
if (labels.outcome !== "ok") return labels.outcome;
|
|
if (labels.status_class === "network") return "network";
|
|
if (labels.status_class === "5xx") return "server-error";
|
|
if (labels.status_class === "4xx") return "client-error";
|
|
if (tone === "blocked" || tone === "warn") return unit === "score" ? "layout-shift" : `slow-${labels.metric}`;
|
|
return "ok";
|
|
}
|
|
|
|
function sortByProblemThenP95(left: PerformanceSummaryRow, right: PerformanceSummaryRow) {
|
|
return toneWeight(right.tone) - toneWeight(left.tone) || right.p95 - left.p95 || right.count - left.count;
|
|
}
|
|
|
|
function toneWeight(tone: string) {
|
|
if (tone === "blocked") return 4;
|
|
if (tone === "warn") return 3;
|
|
if (tone === "ok") return 2;
|
|
return 1;
|
|
}
|
|
|
|
function roundMetric(value: number) {
|
|
if (!Number.isFinite(value)) return 0;
|
|
return Math.round(value * 10000) / 10000;
|
|
}
|
|
|
|
function renderLabels(labels: Record<string, string>) {
|
|
return Object.entries(labels)
|
|
.map(([key, value]) => `${key}="${escapeLabelValue(value)}"`)
|
|
.join(",");
|
|
}
|
|
|
|
function stableLabelKey(labels: Record<string, string>) {
|
|
return Object.entries(labels).map(([key, value]) => `${key}=${value}`).join("\u0001");
|
|
}
|
|
|
|
function isLoopbackMetricsRequest(request) {
|
|
const remoteAddress = String(request.socket?.remoteAddress ?? "");
|
|
const host = String(request.headers?.host ?? "").trim().toLowerCase();
|
|
const loopbackRemote = remoteAddress === "127.0.0.1" || remoteAddress === "::1" || remoteAddress === "::ffff:127.0.0.1";
|
|
const loopbackHost = /^(?:127\.0\.0\.1|localhost)(?::\d+)?$/u.test(host);
|
|
return loopbackRemote && loopbackHost;
|
|
}
|
|
|
|
function routeSegmentTemplate(segment: string): string {
|
|
if (/^(?:trc|trace|thread|run|cmd|job|ses|cnv|conv|gws|box|res|pod|dp|usr)[_-]/iu.test(segment)) return ":id";
|
|
if (/^[0-9a-f]{8,}(?:-[0-9a-f]{4,}){2,}$/iu.test(segment)) return ":uuid";
|
|
if (/^[A-Za-z0-9_-]{20,}$/u.test(segment)) return ":id";
|
|
if (/^\d{5,}$/u.test(segment)) return ":id";
|
|
return sanitizeLabelValue(segment, "_");
|
|
}
|
|
|
|
function sanitizeMetricName(value: unknown, fallback: string) {
|
|
const text = String(value ?? "").trim().toLowerCase().replace(/[^a-z0-9_:-]/gu, "_").slice(0, 64);
|
|
return text || fallback;
|
|
}
|
|
|
|
function sanitizeLabelValue(value: unknown, fallback = "unknown") {
|
|
const text = String(value ?? "").trim();
|
|
const sanitized = text.replace(/[^A-Za-z0-9_.:/-]/gu, "_").slice(0, 120);
|
|
return sanitized || fallback;
|
|
}
|
|
|
|
function requiredEnum(value: unknown, allowed: Set<string>) {
|
|
const text = sanitizeMetricName(value, "");
|
|
return allowed.has(text) ? text : null;
|
|
}
|
|
|
|
function optionalEnum(value: unknown, allowed: Set<string>, fallback: string) {
|
|
const text = sanitizeMetricName(value, fallback);
|
|
return allowed.has(text) ? text : fallback;
|
|
}
|
|
|
|
function normalizeEventType(value: unknown) {
|
|
const text = sanitizeMetricName(value, "unknown");
|
|
const aliased = text === "assistant_message" ? "assistant" : text === "tool" ? "tool_call" : text;
|
|
return WORKBENCH_EVENT_TYPES.has(aliased) ? aliased : "unknown";
|
|
}
|
|
|
|
function normalizeBackendLabel(value: unknown) {
|
|
const sanitized = sanitizeLabelValue(String(value ?? "unknown").trim().toLowerCase(), "unknown").slice(0, 64);
|
|
if (!sanitized || looksHighCardinalityLabel(sanitized)) return "unknown";
|
|
return sanitized;
|
|
}
|
|
|
|
function looksHighCardinalityLabel(value: string) {
|
|
return /(?:^|[^a-z0-9])(?:trc|trace|thread|run|cmd|command|job|ses|session|cnv|conv|conversation|gws|box|res|pod|dp|usr|user)[_-][a-z0-9_-]{6,}/iu.test(value)
|
|
|| /^[0-9a-f]{8,}(?:-[0-9a-f]{4,}){2,}$/iu.test(value)
|
|
|| /^[A-Za-z0-9_-]{24,}$/u.test(value);
|
|
}
|
|
|
|
function durationValueSeconds(valueMs: unknown, maxSeconds: number) {
|
|
const seconds = finiteNumber(valueMs, NaN) / 1000;
|
|
if (!Number.isFinite(seconds) || seconds < 0) return null;
|
|
return Math.min(seconds, maxSeconds);
|
|
}
|
|
|
|
function field(input: unknown, key: string) {
|
|
if (!input || typeof input !== "object" || Array.isArray(input)) return undefined;
|
|
return (input as Record<string, unknown>)[key];
|
|
}
|
|
|
|
function escapeLabelValue(value: unknown) {
|
|
return String(value ?? "").replace(/\\/gu, "\\\\").replace(/\n/gu, "\\n").replace(/"/gu, "\\\"");
|
|
}
|
|
|
|
function normalizeMethod(value: unknown) {
|
|
const method = String(value ?? "NONE").trim().toUpperCase();
|
|
return /^(?:GET|POST|PUT|PATCH|DELETE|HEAD|OPTIONS)$/u.test(method) ? method : "NONE";
|
|
}
|
|
|
|
function normalizeStatusClass(value: unknown) {
|
|
const text = String(value ?? "unknown").trim().toLowerCase();
|
|
if (/^[1-5]xx$/u.test(text)) return text;
|
|
if (text === "network" || text === "unknown") return text;
|
|
return "unknown";
|
|
}
|
|
|
|
function statusClass(value: unknown) {
|
|
const status = finiteNumber(value, 0);
|
|
if (status >= 100 && status < 600) return `${Math.floor(status / 100)}xx`;
|
|
if (status === 0) return "network";
|
|
return "unknown";
|
|
}
|
|
|
|
function finiteNumber(value: unknown, fallback: number) {
|
|
const number = typeof value === "number" ? value : Number(value);
|
|
return Number.isFinite(number) ? number : fallback;
|
|
}
|
|
|
|
function parsePositiveInteger(value: unknown, fallback: number) {
|
|
const number = typeof value === "number" ? value : Number.parseInt(String(value ?? ""), 10);
|
|
return Number.isInteger(number) && number > 0 ? number : fallback;
|
|
}
|
|
|
|
function safeDecode(value: string) {
|
|
try {
|
|
return decodeURIComponent(value);
|
|
} catch {
|
|
return value;
|
|
}
|
|
}
|
|
|
|
function readBody(request, limitBytes) {
|
|
const limit = Number.isInteger(limitBytes) && limitBytes > 0 ? limitBytes : DEFAULT_WEB_PERFORMANCE_BODY_LIMIT_BYTES;
|
|
return new Promise((resolve, reject) => {
|
|
let body = "";
|
|
request.setEncoding("utf8");
|
|
request.on("data", (chunk) => {
|
|
body += chunk;
|
|
if (Buffer.byteLength(body, "utf8") > limit) {
|
|
request.destroy(new Error(`request body exceeds ${limit} bytes`));
|
|
}
|
|
});
|
|
request.on("end", () => resolve(body));
|
|
request.on("error", reject);
|
|
});
|
|
}
|
|
|
|
function sendJson(response, statusCode, body) {
|
|
response.writeHead(statusCode, {
|
|
"content-type": "application/json; charset=utf-8",
|
|
"cache-control": "no-store"
|
|
});
|
|
response.end(`${JSON.stringify(body)}\n`);
|
|
}
|