Files
pikasTech-HWLAB/internal/cloud/web-performance.ts
T
2026-06-22 15:10:26 +08:00

2235 lines
99 KiB
TypeScript

// SPEC: PJ2026-01060505 Workbench Performance draft-2026-06-19-p0
// Keeps browser-reported performance metrics low-cardinality before Prometheus export.
import { decorateErrorPayloadForHttp, logErrorEnvelope } from "./error-envelope.ts";
import { emitWorkbenchUiOtelSpan } from "./otel-trace.ts";
const DEFAULT_WEB_PERFORMANCE_BODY_LIMIT_BYTES = 64 * 1024;
const DURATION_BUCKETS_SECONDS = [0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10, 30];
const CLS_BUCKETS = [0.01, 0.05, 0.1, 0.25, 0.5, 1, 2.5];
const WORKBENCH_JOURNEY_BUCKETS_SECONDS = [0.05, 0.1, 0.25, 0.5, 1, 2, 3, 5, 8, 13, 21, 30, 60, 120];
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];
const WORKBENCH_UI_EVENT_BUCKETS_SECONDS = [0.001, 0.01, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10, 30, 120];
const ALLOWED_KINDS = new Set(["navigation", "web_vital", "api", "long_task", "workbench_journey", "workbench_event_phase", "workbench_backend_event_visible", "workbench_ui_event"]);
const DURATION_METRICS = new Set([
"navigation_ttfb",
"navigation_dom_content_loaded",
"navigation_load",
"lcp",
"inp",
"fid",
"api_request",
"long_task"
]);
const WORKBENCH_SCHEMA_VERSION = "hwlab-web-performance-v2";
const WORKBENCH_JOURNEYS = new Set([
"submit_to_first_visible",
"submit_to_failure",
"backend_event_to_visible",
"session_switch_first_visible",
"session_switch_full_load",
"workbench_open_first_visible",
"workbench_open_full_load"
]);
const WORKBENCH_EVENT_PHASES = new Set([
"created_to_append",
"append_to_sse",
"sse_to_receive",
"receive_to_project",
"project_to_paint",
"user_submit_to_api_accepted",
"api_accepted_to_backend_event"
]);
const WORKBENCH_EVENT_TYPES = new Set(["assistant", "tool_call", "backend", "terminal", "error", "status", "request", "result", "unknown"]);
const WORKBENCH_TRANSPORTS = new Set(["sse", "rest_gap", "poll", "none", "unknown"]);
const WORKBENCH_OUTCOMES = new Set(["ok", "timeout", "error", "dropped", "stale", "partial", "empty", "network", "denied", "unknown"]);
const WORKBENCH_ENTRIES = new Set(["new", "existing", "steer", "retry", "unknown"]);
const WORKBENCH_VISIBILITY = new Set(["foreground", "background", "hidden", "unknown"]);
const WORKBENCH_CACHE_STATES = new Set(["warm", "cold", "unknown"]);
const WORKBENCH_TARGET_STATES = new Set(["running", "terminal", "empty", "unknown"]);
const WORKBENCH_SOURCES = new Set(["rail", "deeplink", "history", "direct", "hydrate", "unknown"]);
const WORKBENCH_AUTH_STATES = new Set(["warm", "login_redirect", "unknown"]);
const WORKBENCH_UI_EVENT_TYPES = new Set(["loading_state", "api_request", "sse_lifecycle", "page_lifecycle", "unknown"]);
const WORKBENCH_UI_SCOPES = new Set(["workbench", "session_list", "session_detail", "api", "sse", "page", "unknown"]);
const WORKBENCH_UI_STATES = new Set(["enter", "exit", "request", "connect", "open", "message", "close", "error", "sample", "unknown"]);
const WORKBENCH_UI_REASONS = new Set(["hydrate", "select_session", "create_session", "api_request", "sse_connect", "sse_open", "sse_error", "sse_close", "pagehide", "visibility_hidden", "unknown"]);
const OTEL_MIN_VALID_EPOCH_MS = Date.UTC(2020, 0, 1);
const LOW_SAMPLE_THRESHOLD = 5;
const DEFAULT_SUMMARY_WINDOW = "15m";
const PERFORMANCE_SUMMARY_WINDOWS = {
"5m": { id: "5m", label: "最近 5 分钟", milliseconds: 5 * 60 * 1000 },
"15m": { id: "15m", label: "最近 15 分钟", milliseconds: 15 * 60 * 1000 },
"1h": { id: "1h", label: "最近 1 小时", milliseconds: 60 * 60 * 1000 },
"6h": { id: "6h", label: "最近 6 小时", milliseconds: 6 * 60 * 60 * 1000 },
"24h": { id: "24h", label: "最近 24 小时", milliseconds: 24 * 60 * 60 * 1000 },
all: { id: "all", label: "全部累计", milliseconds: null }
} as const;
interface WebPerformanceStoreOptions {
env?: Record<string, unknown>;
maxSeries?: number;
maxSamples?: number;
now?: () => number;
}
interface WebPerformancePayload {
schemaVersion?: unknown;
serviceId?: unknown;
page?: unknown;
events?: unknown;
}
interface WebPerformanceEvent {
kind?: unknown;
metric?: unknown;
journey?: unknown;
phase?: unknown;
eventType?: unknown;
backend?: unknown;
transport?: unknown;
entry?: unknown;
visibility?: unknown;
cache?: unknown;
targetState?: unknown;
source?: unknown;
authState?: unknown;
route?: unknown;
valueMs?: unknown;
value?: unknown;
method?: unknown;
status?: unknown;
statusClass?: unknown;
outcome?: unknown;
uiTraceId?: unknown;
otelTraceId?: unknown;
spanId?: unknown;
parentSpanId?: unknown;
eventName?: unknown;
loadingScope?: unknown;
state?: unknown;
reason?: unknown;
sessionHash?: unknown;
traceHash?: unknown;
startedAtEpochMs?: unknown;
endedAtEpochMs?: unknown;
errorName?: unknown;
timeoutName?: unknown;
activityWaitingFor?: unknown;
activityLastEventLabel?: unknown;
activityIdleMs?: unknown;
}
interface NormalizedPerformanceEvent {
series: "web_duration" | "layout_shift" | "workbench_journey" | "workbench_event_phase" | "workbench_backend_event_visible" | "workbench_ui_event";
metric: string;
value: number;
labels: Record<string, string>;
counterLabels?: Record<string, string>;
}
interface RecordedPerformanceSample extends NormalizedPerformanceEvent {
atMs: number;
}
interface PerformanceSummaryWindow {
id: keyof typeof PERFORMANCE_SUMMARY_WINDOWS;
label: string;
milliseconds: number | null;
}
interface PerformanceAggregate {
durationSeries: Map<string, HistogramSeries>;
clsSeries: Map<string, HistogramSeries>;
sampleSeries: Map<string, CounterSeries>;
journeyDurationSeries: Map<string, HistogramSeries>;
journeyTotalSeries: Map<string, CounterSeries>;
eventPhaseSeries: Map<string, HistogramSeries>;
backendEventVisibleSeries: Map<string, HistogramSeries>;
workbenchUiEventSeries: Map<string, HistogramSeries>;
workbenchUiEventTotalSeries: Map<string, CounterSeries>;
}
interface HistogramSeries {
labels: Record<string, string>;
buckets: number[];
sum: number;
count: number;
}
interface CounterSeries {
labels: Record<string, string>;
value: number;
}
interface PerformanceSummaryRow {
kind: string;
metric: string;
route: string;
method: string;
statusClass: string;
outcome: string;
count: number;
average: number;
p50: number;
p75: number;
p95: number;
unit: "seconds" | "score";
sourceFamily?: string;
windowFrom?: string | null;
windowTo?: string;
generatedAt?: string;
sampleCount?: number;
freshness?: "fresh" | "low-sample" | "empty";
aggregationKind?: "exact" | "histogram";
approximation?: "exact" | "bucketed";
bucketBoundaries?: number[];
tone: "ok" | "warn" | "blocked" | "source";
problem: string;
lowSample?: boolean;
sampleState?: "ok" | "low-sample" | "empty";
backend?: string;
transport?: string;
targetState?: string;
cache?: string;
source?: string;
entry?: string;
authState?: string;
eventType?: string;
phase?: string;
backendEvidence?: PerformanceRowBackendEvidence;
}
interface BackendPerformanceEvidenceRow {
route?: unknown;
method?: unknown;
statusClass?: unknown;
outcome?: unknown;
count?: unknown;
average?: unknown;
p50?: unknown;
p75?: unknown;
p95?: unknown;
firstObservedAt?: unknown;
lastObservedAt?: unknown;
responseBytes?: { count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown } | null;
phases?: Array<{ phase?: unknown; outcome?: unknown; count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown }>;
}
interface BackendPerformanceCacheEvidenceRow {
route?: unknown;
cacheKeyClass?: unknown;
count?: unknown;
hitCount?: unknown;
missCount?: unknown;
staleCount?: unknown;
unavailableCount?: unknown;
dbQueryAvoidedCount?: unknown;
hitRatio?: unknown;
dbQueryAvoidedRatio?: unknown;
unavailableRatio?: unknown;
operationDuration?: { count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown; unit?: unknown } | null;
payloadBytes?: { count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown; unit?: unknown } | null;
cacheAgeMs?: { count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown; unit?: unknown } | null;
freshnessSloMs?: { count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown; unit?: unknown } | null;
projectionSeqMax?: unknown;
firstObservedAt?: unknown;
lastObservedAt?: unknown;
}
interface BackendPerformanceEvidenceSnapshot {
schemaVersion?: unknown;
source?: unknown;
observedAt?: unknown;
sampleCount?: unknown;
retainedSampleCount?: unknown;
routeCount?: unknown;
rows?: BackendPerformanceEvidenceRow[];
cache?: BackendPerformanceCacheEvidenceRow[];
}
interface PerformanceRowBackendEvidence {
status: "matched" | "missing" | "unavailable";
statusLabel: string;
diagnostic: string;
diagnosticLabel: string;
detail: string;
route: string;
method: string;
count: number;
p50?: number;
p75?: number;
p95?: number;
responseBytesP95?: number | null;
lastObservedAt?: string | null;
phases?: Array<{ phase: string; outcome: string; count: number; p95: number }>;
}
interface PerformanceDashboardPoint {
label: string;
detail: string;
value: number;
p50: number;
p75: number;
p95: number;
count: number;
tone: string;
sampleState: string;
}
interface PerformanceDashboardTopRow {
label: string;
detail: string;
value: number;
unit: string;
count: number;
tone: string;
}
interface PerformanceCollectionHealthDiagnostic {
code: string;
label: string;
tone: "ok" | "warn" | "blocked" | "source";
detail: string;
}
interface PerformanceCollectionHealth {
schemaVersion: "hwlab-web-performance-collection-health-v1";
status: "fresh" | "low-sample" | "stale" | "degraded" | "waiting";
statusLabel: string;
reason: string;
reasonLabel: string;
sampleCount: number;
retainedSampleCount: number;
sampleSeries: number;
lowSampleThreshold: number;
firstSampleAt: string | null;
lastSampleAt: string | null;
lastRetainedSampleAt: string | null;
secondsSinceLastSample: number | null;
windowCoverageSeconds: number | null;
sourceFamilyCounts: Array<{ sourceFamily: string; rowCount: number; sampleCount: number }>;
unknownAttribution: {
workbenchRows: number;
attributableRows: number;
rowsWithUnknown: number;
samplesWithUnknown: number;
backendUnknownRows: number;
transportUnknownRows: number;
};
diagnostics: PerformanceCollectionHealthDiagnostic[];
}
export function createWebPerformanceStore(options: WebPerformanceStoreOptions = {}) {
const env = options.env ?? process.env;
const maxSeries = parsePositiveInteger(env.HWLAB_WEB_PERFORMANCE_MAX_SERIES, options.maxSeries ?? 240);
const maxSamples = parsePositiveInteger(env.HWLAB_WEB_PERFORMANCE_MAX_SAMPLES, options.maxSamples ?? 5000);
const now = typeof options.now === "function" ? options.now : () => Date.now();
const durationSeries = new Map<string, HistogramSeries>();
const clsSeries = new Map<string, HistogramSeries>();
const sampleSeries = new Map<string, CounterSeries>();
const droppedSeries = new Map<string, CounterSeries>();
const journeyDurationSeries = new Map<string, HistogramSeries>();
const journeyTotalSeries = new Map<string, CounterSeries>();
const eventPhaseSeries = new Map<string, HistogramSeries>();
const backendEventVisibleSeries = new Map<string, HistogramSeries>();
const workbenchUiEventSeries = new Map<string, HistogramSeries>();
const workbenchUiEventTotalSeries = new Map<string, CounterSeries>();
const samples: RecordedPerformanceSample[] = [];
const baseLabels = {
service: "hwlab-cloud-web",
namespace: sanitizeLabelValue(env.HWLAB_METRICS_NAMESPACE ?? env.POD_NAMESPACE ?? "hwlab-v02"),
gitops_target: sanitizeLabelValue(env.HWLAB_GITOPS_TARGET ?? env.HWLAB_GITOPS_PROFILE ?? "v02")
};
function record(payload: WebPerformancePayload) {
const events = Array.isArray(payload.events) ? payload.events.slice(0, 80) : [];
let accepted = 0;
let dropped = 0;
for (const rawEvent of events) {
const event = normalizeEvent(rawEvent, payload);
if (!event) {
incrementDropped("invalid_event");
dropped += 1;
continue;
}
if (!recordNormalizedEvent(event)) {
incrementDropped("series_limit");
dropped += 1;
continue;
}
rememberSample(event);
accepted += 1;
}
return { accepted, dropped, received: events.length };
}
function normalizeEvent(rawEvent: unknown, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
if (!rawEvent || typeof rawEvent !== "object" || Array.isArray(rawEvent)) return null;
const input = rawEvent as WebPerformanceEvent;
const kind = sanitizeMetricName(input.kind, "unknown");
if (!ALLOWED_KINDS.has(kind)) return null;
if (kind === "workbench_journey") return normalizeWorkbenchJourneyEvent(input, payload);
if (kind === "workbench_event_phase") return normalizeWorkbenchEventPhase(input, payload);
if (kind === "workbench_backend_event_visible") return normalizeWorkbenchBackendEventVisible(input, payload);
if (kind === "workbench_ui_event") return normalizeWorkbenchUiEvent(input, payload);
const metric = sanitizeMetricName(input.metric, "unknown");
const isCls = metric === "cls";
if (!isCls && !DURATION_METRICS.has(metric)) return null;
const rawValue = isCls ? finiteNumber(input.value, NaN) : finiteNumber(input.valueMs, NaN) / 1000;
if (!Number.isFinite(rawValue) || rawValue < 0) return null;
const value = isCls ? Math.min(rawValue, 10) : Math.min(rawValue, 120);
const route = webPerformanceRouteTemplate(input.route ?? payload.page ?? "/workspace");
const pageRoute = webPerformanceRouteTemplate(payload.page ?? "/workspace");
if (isObservabilityNoise({ kind, metric, route, pageRoute })) return null;
const labels = {
...baseLabels,
kind,
metric,
route,
method: normalizeMethod(input.method),
status_class: normalizeStatusClass(input.statusClass ?? (input.status === undefined || input.status === null ? "unknown" : statusClass(input.status))),
outcome: sanitizeLabelValue(input.outcome ?? "ok", "ok")
};
return { series: isCls ? "layout_shift" : "web_duration", metric, value, labels, counterLabels: sampleLabels(labels) };
}
function normalizeWorkbenchJourneyEvent(input: WebPerformanceEvent, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
if (String(payload.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return null;
const journey = requiredEnum(input.journey ?? input.metric, WORKBENCH_JOURNEYS);
if (!journey) return null;
const value = durationValueSeconds(input.valueMs, 120);
if (value === null) return null;
const route = webPerformanceRouteTemplate(input.route ?? payload.page ?? "/workbench");
const pageRoute = webPerformanceRouteTemplate(payload.page ?? "/workbench");
if (isObservabilityNoise({ kind: "workbench_journey", metric: journey, route, pageRoute })) return null;
const labels = {
...baseLabels,
journey,
route,
entry: optionalEnum(input.entry, WORKBENCH_ENTRIES, "unknown"),
source: optionalEnum(input.source, WORKBENCH_SOURCES, "unknown"),
target_state: optionalEnum(input.targetState ?? field(input, "target_state"), WORKBENCH_TARGET_STATES, "unknown"),
cache: optionalEnum(input.cache, WORKBENCH_CACHE_STATES, "unknown"),
auth_state: optionalEnum(input.authState ?? field(input, "auth_state"), WORKBENCH_AUTH_STATES, "unknown"),
backend: normalizeBackendLabel(input.backend),
transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
visibility: optionalEnum(input.visibility, WORKBENCH_VISIBILITY, "unknown"),
outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
};
return { series: "workbench_journey", metric: journey, value, labels, counterLabels: labels };
}
function normalizeWorkbenchEventPhase(input: WebPerformanceEvent, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
if (String(payload.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return null;
const phase = requiredEnum(input.phase ?? input.metric, WORKBENCH_EVENT_PHASES);
if (!phase) return null;
const value = durationValueSeconds(input.valueMs, 30);
if (value === null) return null;
const labels = {
...baseLabels,
phase,
event_type: normalizeEventType(input.eventType ?? field(input, "event_type")),
backend: normalizeBackendLabel(input.backend),
transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
};
return { series: "workbench_event_phase", metric: phase, value, labels };
}
function normalizeWorkbenchBackendEventVisible(input: WebPerformanceEvent, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
if (String(payload.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return null;
const value = durationValueSeconds(input.valueMs, 120);
if (value === null) return null;
const labels = {
...baseLabels,
event_type: normalizeEventType(input.eventType ?? field(input, "event_type")),
backend: normalizeBackendLabel(input.backend),
transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
};
return { series: "workbench_backend_event_visible", metric: "backend_event_to_visible", value, labels };
}
function normalizeWorkbenchUiEvent(input: WebPerformanceEvent, payload: WebPerformancePayload): NormalizedPerformanceEvent | null {
if (String(payload.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return null;
const eventType = optionalEnum(input.eventType ?? field(input, "event_type"), WORKBENCH_UI_EVENT_TYPES, "unknown");
const value = durationValueSeconds(input.valueMs, 120);
if (value === null) return null;
const route = webPerformanceRouteTemplate(input.route ?? payload.page ?? "/workbench");
const pageRoute = webPerformanceRouteTemplate(payload.page ?? "/workbench");
if (isObservabilityNoise({ kind: "workbench_ui_event", metric: eventType, route, pageRoute })) return null;
const labels = {
...baseLabels,
event_type: eventType,
route,
scope: optionalEnum(input.loadingScope ?? field(input, "loading_scope"), WORKBENCH_UI_SCOPES, "unknown"),
state: optionalEnum(input.state, WORKBENCH_UI_STATES, "unknown"),
reason: optionalEnum(input.reason, WORKBENCH_UI_REASONS, "unknown"),
method: normalizeMethod(input.method),
status_class: normalizeStatusClass(input.statusClass ?? (input.status === undefined || input.status === null ? "unknown" : statusClass(input.status))),
outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
};
return { series: "workbench_ui_event", metric: "workbench_ui_event", value, labels, counterLabels: labels };
}
function recordNormalizedEvent(event: NormalizedPerformanceEvent) {
if (event.series === "layout_shift") return recordHistogramWithCounter(clsSeries, sampleSeries, event.labels, event.counterLabels ?? sampleLabels(event.labels), event.value, CLS_BUCKETS);
if (event.series === "web_duration") return recordHistogramWithCounter(durationSeries, sampleSeries, event.labels, event.counterLabels ?? sampleLabels(event.labels), event.value, DURATION_BUCKETS_SECONDS);
if (event.series === "workbench_journey") return recordHistogramWithCounter(journeyDurationSeries, journeyTotalSeries, event.labels, event.counterLabels ?? event.labels, event.value, WORKBENCH_JOURNEY_BUCKETS_SECONDS);
if (event.series === "workbench_event_phase") return recordHistogram(eventPhaseSeries, event.labels, event.value, WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS, maxSeries);
if (event.series === "workbench_backend_event_visible") return recordHistogram(backendEventVisibleSeries, event.labels, event.value, WORKBENCH_JOURNEY_BUCKETS_SECONDS, maxSeries);
return recordHistogramWithCounter(workbenchUiEventSeries, workbenchUiEventTotalSeries, event.labels, event.counterLabels ?? event.labels, event.value, WORKBENCH_UI_EVENT_BUCKETS_SECONDS);
}
function rememberSample(event: NormalizedPerformanceEvent) {
samples.push({
...event,
atMs: now(),
labels: { ...event.labels },
counterLabels: event.counterLabels ? { ...event.counterLabels } : undefined
});
if (samples.length > maxSamples) samples.splice(0, samples.length - maxSamples);
}
function recordHistogramWithCounter(histograms: Map<string, HistogramSeries>, counters: Map<string, CounterSeries>, histogramLabels: Record<string, string>, counterLabels: Record<string, string>, value: number, buckets: number[]) {
if (!canRecordSeries(histograms, histogramLabels, maxSeries) || !canRecordSeries(counters, counterLabels, maxSeries)) return false;
recordHistogram(histograms, histogramLabels, value, buckets, maxSeries);
incrementCounter(counters, counterLabels, maxSeries);
return true;
}
function incrementDropped(reason: string) {
incrementCounter(droppedSeries, { ...baseLabels, reason }, Math.max(maxSeries, 16));
}
function metricsText() {
const lines = [
"# HELP hwlab_webui_performance_sample_total Browser-observed HWLAB Cloud Web performance samples accepted by cloud-api.",
"# TYPE hwlab_webui_performance_sample_total counter",
...renderCounters("hwlab_webui_performance_sample_total", sampleSeries),
"# HELP hwlab_webui_performance_duration_seconds Browser-observed HWLAB Cloud Web duration metrics in seconds.",
"# TYPE hwlab_webui_performance_duration_seconds histogram",
...renderHistogram("hwlab_webui_performance_duration_seconds", durationSeries, DURATION_BUCKETS_SECONDS),
"# HELP hwlab_webui_layout_shift_score Browser-observed cumulative layout shift score.",
"# TYPE hwlab_webui_layout_shift_score histogram",
...renderHistogram("hwlab_webui_layout_shift_score", clsSeries, CLS_BUCKETS),
"# HELP hwlab_webui_performance_dropped_total Browser performance samples dropped before Prometheus export.",
"# TYPE hwlab_webui_performance_dropped_total counter",
...renderCounters("hwlab_webui_performance_dropped_total", droppedSeries),
"# HELP hwlab_workbench_journey_total Browser-observed HWLAB Workbench journey samples accepted by cloud-api.",
"# TYPE hwlab_workbench_journey_total counter",
...renderCounters("hwlab_workbench_journey_total", journeyTotalSeries),
"# HELP hwlab_workbench_journey_duration_seconds Browser-observed HWLAB Workbench user-visible journey durations in seconds.",
"# TYPE hwlab_workbench_journey_duration_seconds histogram",
...renderHistogram("hwlab_workbench_journey_duration_seconds", journeyDurationSeries, WORKBENCH_JOURNEY_BUCKETS_SECONDS),
"# HELP hwlab_workbench_event_phase_duration_seconds Browser/backend phase durations for HWLAB Workbench events in seconds.",
"# TYPE hwlab_workbench_event_phase_duration_seconds histogram",
...renderHistogram("hwlab_workbench_event_phase_duration_seconds", eventPhaseSeries, WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS),
"# HELP hwlab_workbench_backend_event_visible_latency_seconds Agent backend event generated to browser-visible latency in seconds.",
"# TYPE hwlab_workbench_backend_event_visible_latency_seconds histogram",
...renderHistogram("hwlab_workbench_backend_event_visible_latency_seconds", backendEventVisibleSeries, WORKBENCH_JOURNEY_BUCKETS_SECONDS),
"# HELP hwlab_workbench_ui_event_total Browser-observed Workbench UI lifecycle events accepted by cloud-api.",
"# TYPE hwlab_workbench_ui_event_total counter",
...renderCounters("hwlab_workbench_ui_event_total", workbenchUiEventTotalSeries),
"# HELP hwlab_workbench_ui_event_duration_seconds Browser-observed Workbench UI lifecycle event durations in seconds.",
"# TYPE hwlab_workbench_ui_event_duration_seconds histogram",
...renderHistogram("hwlab_workbench_ui_event_duration_seconds", workbenchUiEventSeries, WORKBENCH_UI_EVENT_BUCKETS_SECONDS),
""
];
return lines.join("\n");
}
function summary(input: { window?: unknown; backendEvidence?: BackendPerformanceEvidenceSnapshot | null } = {}) {
const sampleWindow = resolvePerformanceSummaryWindow(input.window);
const generatedAtMs = now();
const observedAt = new Date(generatedAtMs).toISOString();
const windowBounds = performanceSummaryWindowBounds(sampleWindow, generatedAtMs, observedAt);
const aggregate = aggregateForWindow(sampleWindow, generatedAtMs);
const windowSamples = samplesForWindow(sampleWindow, generatedAtMs, samples);
const exactStats = exactStatsForSamples(windowSamples);
const backendEvidence = normalizeBackendEvidence(input.backendEvidence);
const durationRows = attachBackendEvidenceToRows(applySummaryContract(histogramSummaryRows(aggregate.durationSeries, DURATION_BUCKETS_SECONDS, "seconds"), exactStats, windowBounds), backendEvidence);
const clsRows = applySummaryContract(histogramSummaryRows(aggregate.clsSeries, CLS_BUCKETS, "score"), exactStats, windowBounds);
const rows = [...durationRows, ...clsRows];
const workbenchJourneys = applySummaryContract(workbenchJourneySummaryRows(aggregate.journeyDurationSeries, WORKBENCH_JOURNEY_BUCKETS_SECONDS), exactStats, windowBounds)
.sort(sortByProblemThenP95)
.slice(0, 24);
const workbenchEventPhases = applySummaryContract(workbenchEventPhaseSummaryRows(aggregate.eventPhaseSeries, WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS), exactStats, windowBounds)
.sort(sortByProblemThenP95)
.slice(0, 24);
const workbenchBackendEvents = applySummaryContract(workbenchBackendEventVisibleSummaryRows(aggregate.backendEventVisibleSeries, WORKBENCH_JOURNEY_BUCKETS_SECONDS), exactStats, windowBounds)
.sort(sortByProblemThenP95)
.slice(0, 24);
const workbenchCacheRows = backendCacheEvidenceSummaryRows(backendEvidence, windowBounds);
const workbenchRows = [...workbenchJourneys, ...workbenchEventPhases, ...workbenchBackendEvents, ...workbenchCacheRows];
const apiRoutes = durationRows
.filter((row) => row.metric === "api_request")
.sort(sortByProblemThenP95)
.slice(0, 12);
const webVitals = rows
.filter((row) => row.kind === "web_vital" || row.metric.startsWith("navigation_"))
.sort(sortByProblemThenP95)
.slice(0, 12);
const longTasks = durationRows
.filter((row) => row.metric === "long_task")
.sort(sortByProblemThenP95)
.slice(0, 12);
const problems = [...rows, ...workbenchRows]
.filter(isPerformanceProblemRow)
.sort(sortByProblemThenP95)
.slice(0, 16);
const sampleCount = [...aggregate.sampleSeries.values()].reduce((sum, entry) => sum + entry.value, 0);
const workbenchSampleCount = [...aggregate.journeyTotalSeries.values()].reduce((sum, entry) => sum + entry.value, 0)
+ histogramSampleCount(aggregate.eventPhaseSeries)
+ histogramSampleCount(aggregate.backendEventVisibleSeries)
+ [...aggregate.workbenchUiEventTotalSeries.values()].reduce((sum, entry) => sum + entry.value, 0);
const totalSampleCount = sampleCount + workbenchSampleCount;
const summaryInfo = {
sampleCount: totalSampleCount,
sampleSeries: aggregate.sampleSeries.size,
durationSeries: aggregate.durationSeries.size,
clsSeries: aggregate.clsSeries.size,
droppedSeries: droppedSeries.size,
workbenchJourneySeries: aggregate.journeyDurationSeries.size,
workbenchEventPhaseSeries: aggregate.eventPhaseSeries.size,
workbenchBackendEventVisibleSeries: aggregate.backendEventVisibleSeries.size,
workbenchCacheEvidenceRows: workbenchCacheRows.length,
workbenchUiEventSeries: aggregate.workbenchUiEventSeries.size,
routeCount: new Set([...rows, ...workbenchRows].map((row) => row.route)).size,
problemCount: problems.length,
status: totalSampleCount === 0 ? "waiting" : totalSampleCount < 10 ? "warming" : problems.length > 0 ? "watch" : "ok",
lowSampleThreshold: LOW_SAMPLE_THRESHOLD,
window: sampleWindow.id,
windowLabel: sampleWindow.label,
windowSeconds: sampleWindow.milliseconds === null ? null : Math.round(sampleWindow.milliseconds / 1000),
windowFrom: windowBounds.windowFrom,
windowTo: windowBounds.windowTo,
generatedAt: observedAt,
aggregationKind: "exact",
approximation: "exact"
};
const collectionHealth = buildPerformanceCollectionHealth({
observedAt,
generatedAtMs,
sampleWindow,
summary: summaryInfo,
windowSamples,
retainedSamples: samples,
rows: [...rows, ...workbenchRows]
});
const dashboard = buildPerformanceDashboard({
observedAt,
source: "cloud-api-rum-store",
namespace: baseLabels.namespace,
gitopsTarget: baseLabels.gitops_target,
sampleWindow,
summary: summaryInfo,
collectionHealth,
apiRoutes,
webVitals,
longTasks,
problems,
workbenchJourneys,
workbenchEventPhases,
workbenchBackendEvents,
rows: rows.sort(sortByProblemThenP95).slice(0, 40),
workbenchRows: workbenchRows.sort(sortByProblemThenP95).slice(0, 40)
});
return {
serviceId: "hwlab-cloud-api",
route: "/v1/web-performance/summary",
source: "cloud-api-rum-store",
observedAt,
namespace: baseLabels.namespace,
gitopsTarget: baseLabels.gitops_target,
sampleWindow: {
id: sampleWindow.id,
label: sampleWindow.label,
seconds: sampleWindow.milliseconds === null ? null : Math.round(sampleWindow.milliseconds / 1000),
windowFrom: windowBounds.windowFrom,
windowTo: windowBounds.windowTo,
generatedAt: observedAt,
aggregationKind: "exact",
approximation: "exact"
},
summary: summaryInfo,
backendEvidence,
collectionHealth,
dashboard,
apiRoutes,
webVitals,
longTasks,
problems,
workbenchJourneys,
workbenchEventPhases,
workbenchBackendEvents,
workbenchCacheRows,
workbenchRows: dashboard.source.workbenchRows,
rows: dashboard.source.rows
};
}
function snapshot() {
return {
sampleSeries: sampleSeries.size,
durationSeries: durationSeries.size,
clsSeries: clsSeries.size,
droppedSeries: droppedSeries.size,
workbenchJourneySeries: journeyDurationSeries.size,
workbenchEventPhaseSeries: eventPhaseSeries.size,
workbenchBackendEventVisibleSeries: backendEventVisibleSeries.size,
workbenchUiEventSeries: workbenchUiEventSeries.size,
sampleCount: [...sampleSeries.values()].reduce((sum, entry) => sum + entry.value, 0)
+ [...journeyTotalSeries.values()].reduce((sum, entry) => sum + entry.value, 0)
+ histogramSampleCount(eventPhaseSeries)
+ histogramSampleCount(backendEventVisibleSeries)
+ [...workbenchUiEventTotalSeries.values()].reduce((sum, entry) => sum + entry.value, 0),
retainedSamples: samples.length,
maxSamples
};
}
function aggregateForWindow(sampleWindow: PerformanceSummaryWindow, generatedAtMs = now()): PerformanceAggregate {
const aggregate = createPerformanceAggregate();
for (const sample of samplesForWindow(sampleWindow, generatedAtMs, samples)) recordSampleIntoAggregate(aggregate, sample);
return aggregate;
}
return { record, metricsText, snapshot, summary };
}
function createPerformanceAggregate(): PerformanceAggregate {
return {
durationSeries: new Map(),
clsSeries: new Map(),
sampleSeries: new Map(),
journeyDurationSeries: new Map(),
journeyTotalSeries: new Map(),
eventPhaseSeries: new Map(),
backendEventVisibleSeries: new Map(),
workbenchUiEventSeries: new Map(),
workbenchUiEventTotalSeries: new Map()
};
}
function recordSampleIntoAggregate(aggregate: PerformanceAggregate, sample: RecordedPerformanceSample) {
if (sample.series === "layout_shift") {
recordHistogram(aggregate.clsSeries, sample.labels, sample.value, CLS_BUCKETS, Number.MAX_SAFE_INTEGER);
incrementCounter(aggregate.sampleSeries, sample.counterLabels ?? sampleLabels(sample.labels), Number.MAX_SAFE_INTEGER);
return;
}
if (sample.series === "web_duration") {
recordHistogram(aggregate.durationSeries, sample.labels, sample.value, DURATION_BUCKETS_SECONDS, Number.MAX_SAFE_INTEGER);
incrementCounter(aggregate.sampleSeries, sample.counterLabels ?? sampleLabels(sample.labels), Number.MAX_SAFE_INTEGER);
return;
}
if (sample.series === "workbench_journey") {
recordHistogram(aggregate.journeyDurationSeries, sample.labels, sample.value, WORKBENCH_JOURNEY_BUCKETS_SECONDS, Number.MAX_SAFE_INTEGER);
incrementCounter(aggregate.journeyTotalSeries, sample.counterLabels ?? sample.labels, Number.MAX_SAFE_INTEGER);
return;
}
if (sample.series === "workbench_event_phase") {
recordHistogram(aggregate.eventPhaseSeries, sample.labels, sample.value, WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS, Number.MAX_SAFE_INTEGER);
return;
}
if (sample.series === "workbench_ui_event") {
recordHistogram(aggregate.workbenchUiEventSeries, sample.labels, sample.value, WORKBENCH_UI_EVENT_BUCKETS_SECONDS, Number.MAX_SAFE_INTEGER);
incrementCounter(aggregate.workbenchUiEventTotalSeries, sample.counterLabels ?? sample.labels, Number.MAX_SAFE_INTEGER);
return;
}
recordHistogram(aggregate.backendEventVisibleSeries, sample.labels, sample.value, WORKBENCH_JOURNEY_BUCKETS_SECONDS, Number.MAX_SAFE_INTEGER);
}
function samplesForWindow(samplesWindow: PerformanceSummaryWindow, generatedAtMs: number, retainedSamples: RecordedPerformanceSample[] = []) {
const source = retainedSamples.length ? retainedSamples : [];
if (samplesWindow.milliseconds === null) return source.slice();
const cutoff = generatedAtMs - samplesWindow.milliseconds;
return source.filter((sample) => sample.atMs >= cutoff && sample.atMs <= generatedAtMs);
}
function resolvePerformanceSummaryWindow(input: unknown): PerformanceSummaryWindow {
const key = String(input ?? DEFAULT_SUMMARY_WINDOW).trim().toLowerCase();
if (Object.prototype.hasOwnProperty.call(PERFORMANCE_SUMMARY_WINDOWS, key)) return PERFORMANCE_SUMMARY_WINDOWS[key as keyof typeof PERFORMANCE_SUMMARY_WINDOWS];
return PERFORMANCE_SUMMARY_WINDOWS[DEFAULT_SUMMARY_WINDOW];
}
function performanceSummaryWindowBounds(sampleWindow: PerformanceSummaryWindow, generatedAtMs: number, generatedAt: string) {
const windowTo = generatedAt;
const windowFrom = sampleWindow.milliseconds === null ? null : new Date(Math.max(0, generatedAtMs - sampleWindow.milliseconds)).toISOString();
return { windowFrom, windowTo, generatedAt };
}
export async function handleWebPerformanceIngestHttp(request, response, options = {}) {
const body = await readBody(request, options.bodyLimitBytes ?? DEFAULT_WEB_PERFORMANCE_BODY_LIMIT_BYTES);
let payload;
try {
payload = body ? JSON.parse(body) : {};
} catch (error) {
sendJson(response, 400, { accepted: false, error: { code: "parse_error", message: "Invalid web performance JSON body", reason: error.message } });
return;
}
if (!payload || typeof payload !== "object" || Array.isArray(payload)) {
sendJson(response, 400, { accepted: false, error: { code: "invalid_params", message: "web performance body must be a JSON object" } });
return;
}
const result = options.store.record(payload);
void emitWorkbenchUiOtelSpans(payload, options.env ?? process.env).catch(() => undefined);
sendJson(response, 202, { accepted: true, ...result });
}
export async function emitWorkbenchUiOtelSpans(payload: WebPerformancePayload, env = process.env) {
if (String(payload?.schemaVersion ?? "") !== WORKBENCH_SCHEMA_VERSION) return { submitted: 0, valuesPrinted: false };
const events = Array.isArray(payload.events) ? payload.events.slice(0, 80) : [];
const tasks = events
.map((rawEvent) => normalizeWorkbenchUiOtelSpan(rawEvent, payload))
.filter(Boolean)
.map((event) => emitWorkbenchUiOtelSpan(event.name, event.uiTraceId, env, {
otelTraceId: event.otelTraceId,
spanId: event.spanId,
parentSpanId: event.parentSpanId,
startTimeMs: event.startedAtEpochMs,
endTimeMs: event.endedAtEpochMs,
status: event.status,
attributes: event.attributes
}));
if (!tasks.length) return { submitted: 0, valuesPrinted: false };
await Promise.allSettled(tasks);
return { submitted: tasks.length, valuesPrinted: false };
}
function normalizeWorkbenchUiOtelSpan(rawEvent: unknown, payload: WebPerformancePayload) {
if (!rawEvent || typeof rawEvent !== "object" || Array.isArray(rawEvent)) return null;
const input = rawEvent as WebPerformanceEvent;
if (sanitizeMetricName(input.kind, "unknown") !== "workbench_ui_event") return null;
const uiTraceId = sanitizeOtelAttribute(input.uiTraceId, 96);
if (!uiTraceId) return null;
const eventType = optionalEnum(input.eventType ?? field(input, "event_type"), WORKBENCH_UI_EVENT_TYPES, "unknown");
const scope = optionalEnum(input.loadingScope ?? field(input, "loading_scope"), WORKBENCH_UI_SCOPES, "unknown");
const state = optionalEnum(input.state, WORKBENCH_UI_STATES, "unknown");
const reason = optionalEnum(input.reason, WORKBENCH_UI_REASONS, "unknown");
const route = webPerformanceRouteTemplate(input.route ?? payload.page ?? "/workbench");
const valueMs = Math.min(Math.max(finiteNumber(input.valueMs, 0), 0), 120_000);
const endedAtEpochMs = validEpochMs(input.endedAtEpochMs) ?? Date.now();
const startedAtEpochMs = validEpochMs(input.startedAtEpochMs) ?? Math.max(OTEL_MIN_VALID_EPOCH_MS, endedAtEpochMs - valueMs);
const outcome = optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok");
const statusNumber = finiteNumber(input.status, NaN);
const eventName = sanitizeOtelAttribute(input.eventName, 80);
const sessionHash = sanitizeOtelAttribute(input.sessionHash, 80);
const traceHash = sanitizeOtelAttribute(input.traceHash, 80);
const errorName = sanitizeOtelAttribute(input.errorName, 80);
const timeoutName = sanitizeOtelAttribute(input.timeoutName, 80);
const activityWaitingFor = sanitizeOtelAttribute(input.activityWaitingFor, 80);
const activityLastEventLabel = sanitizeOtelAttribute(input.activityLastEventLabel, 120);
const activityIdleMs = Math.min(Math.max(finiteNumber(input.activityIdleMs, NaN), 0), 3_600_000);
return {
name: ["workbench", eventType, scope, state].filter((part) => part && part !== "unknown").join("."),
uiTraceId,
otelTraceId: sanitizeHex(input.otelTraceId, 32),
spanId: sanitizeHex(input.spanId, 16),
parentSpanId: sanitizeHex(input.parentSpanId, 16),
startedAtEpochMs,
endedAtEpochMs,
status: state === "error" || ["error", "network", "timeout", "denied"].includes(outcome) ? "error" : "ok",
attributes: {
"workbench.ui.event_type": eventType,
"workbench.ui.scope": scope,
"workbench.ui.state": state,
"workbench.ui.reason": reason,
"workbench.ui.route": route,
"workbench.ui.outcome": outcome,
"workbench.ui.value_ms": valueMs,
"workbench.ui.visibility": optionalEnum(input.visibility, WORKBENCH_VISIBILITY, "unknown"),
"workbench.ui.event_name": eventName,
"workbench.ui.session_hash": sessionHash,
"workbench.ui.trace_hash": traceHash,
"workbench.ui.error_name": errorName,
"workbench.ui.timeout_name": timeoutName,
"workbench.ui.activity_waiting_for": activityWaitingFor,
"workbench.ui.activity_last_event_label": activityLastEventLabel,
...(Number.isFinite(activityIdleMs) ? { "workbench.ui.activity_idle_ms": Math.trunc(activityIdleMs) } : {}),
"workbench.ui.values_printed": false,
"http.route": route,
"http.request.method": normalizeMethod(input.method),
...(Number.isFinite(statusNumber) ? { "http.response.status_code": Math.trunc(statusNumber) } : {}),
"http.response.status_class": normalizeStatusClass(input.statusClass ?? (Number.isFinite(statusNumber) ? statusClass(statusNumber) : "unknown"))
}
};
}
export function handleWebPerformanceMetricsHttp(request, response, options = {}) {
if (!isLoopbackMetricsRequest(request)) {
sendJson(response, 404, { error: { code: "not_found", message: "route is not public" } });
return;
}
const primary = String(options.store.metricsText() ?? "").trimEnd();
const extra = typeof options.extraMetricsText === "function"
? String(options.extraMetricsText() ?? "").trimEnd()
: String(options.extraMetricsText ?? "").trimEnd();
const payload = [primary, extra].filter(Boolean).join("\n") + "\n";
response.writeHead(200, {
"content-type": "text/plain; version=0.0.4; charset=utf-8",
"content-length": Buffer.byteLength(payload)
});
response.end(payload);
}
export function handleWebPerformanceSummaryHttp(request, response, options = {}) {
const url = requestUrl(request);
const backendEvidence = typeof options.backendPerformanceStore?.evidence === "function"
? options.backendPerformanceStore.evidence({ window: url.searchParams.get("window") })
: null;
sendJson(response, 200, options.store.summary({ window: url.searchParams.get("window"), backendEvidence }));
}
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 requestUrl(request) {
try {
return new URL(String(request.url ?? "/"), `http://${String(request.headers?.host ?? "hwlab.local")}`);
} catch {
return new URL("/", "http://hwlab.local");
}
}
function isObservabilityNoise(event: { kind: string; metric: string; route: string; pageRoute: string }) {
if (event.pageRoute === "/performance") return true;
if (event.route === "/performance" && (event.kind === "navigation" || event.kind === "web_vital" || event.kind === "long_task")) return true;
return event.route === "/v1/web-performance" || event.route.startsWith("/v1/web-performance/");
}
function canRecordSeries(series: Map<string, HistogramSeries | CounterSeries>, labels: Record<string, string>, maxSeries: number) {
const key = stableLabelKey(labels);
return series.has(key) || series.size < maxSeries;
}
function recordHistogram(series: Map<string, HistogramSeries>, labels: Record<string, string>, value: number, buckets: number[], maxSeries: number) {
const key = stableLabelKey(labels);
let entry = series.get(key);
if (!entry) {
if (series.size >= maxSeries) return false;
entry = { labels, buckets: buckets.map(() => 0), sum: 0, count: 0 };
series.set(key, entry);
}
for (let index = 0; index < buckets.length; index += 1) {
if (value <= buckets[index]) entry.buckets[index] += 1;
}
entry.sum += value;
entry.count += 1;
return true;
}
function incrementCounter(series: Map<string, CounterSeries>, labels: Record<string, string>, maxSeries: number) {
const key = stableLabelKey(labels);
let entry = series.get(key);
if (!entry) {
if (series.size >= maxSeries) return false;
entry = { labels, value: 0 };
series.set(key, entry);
}
entry.value += 1;
return true;
}
function histogramSampleCount(series: Map<string, HistogramSeries>) {
return [...series.values()].reduce((sum, entry) => sum + entry.count, 0);
}
function renderCounters(metricName: string, series: Map<string, CounterSeries>) {
return [...series.values()].map((entry) => `${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 p75 = histogramQuantile(entry, buckets, 0.75);
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),
p75: roundMetric(p75),
p95: roundMetric(p95),
unit,
tone,
problem: performanceProblem(labels, p95, count, unit, tone),
lowSample: count > 0 && count < LOW_SAMPLE_THRESHOLD,
sampleState: sampleState(count)
};
});
}
function exactStatsForSamples(windowSamples: RecordedPerformanceSample[]) {
const grouped = new Map<string, { values: number[] }>();
for (const sample of windowSamples) {
const identity = summaryRowIdentityForSample(sample);
if (!identity) continue;
const key = summaryRowKey(identity);
let entry = grouped.get(key);
if (!entry) {
entry = { values: [] };
grouped.set(key, entry);
}
entry.values.push(sample.value);
}
const stats = new Map<string, { count: number; average: number; p50: number; p75: number; p95: number }>();
for (const [key, entry] of grouped.entries()) stats.set(key, exactStats(entry.values));
return stats;
}
function exactStats(values: number[]) {
const sorted = values.filter(Number.isFinite).sort((left, right) => left - right);
const count = sorted.length;
const average = count > 0 ? sorted.reduce((sum, value) => sum + value, 0) / count : 0;
return {
count,
average: roundMetric(average),
p50: roundMetric(exactQuantile(sorted, 0.5)),
p75: roundMetric(exactQuantile(sorted, 0.75)),
p95: roundMetric(exactQuantile(sorted, 0.95))
};
}
function exactQuantile(sortedValues: number[], quantile: number) {
if (sortedValues.length <= 0) return 0;
const index = Math.min(sortedValues.length - 1, Math.max(0, Math.ceil(sortedValues.length * quantile) - 1));
return sortedValues[index] ?? 0;
}
function applySummaryContract(rows: PerformanceSummaryRow[], exactStatsByRow: Map<string, { count: number; average: number; p50: number; p75: number; p95: number }>, windowBounds: { windowFrom: string | null; windowTo: string; generatedAt: string }) {
return rows.map((row) => {
const exact = exactStatsByRow.get(summaryRowKey(row));
const count = exact?.count ?? row.count;
const p95 = exact?.p95 ?? row.p95;
const nextRow = {
...row,
...(exact ? { count, average: exact.average, p50: exact.p50, p75: exact.p75, p95 } : {}),
sampleCount: count,
sourceFamily: sourceFamilyForRow(row),
windowFrom: windowBounds.windowFrom,
windowTo: windowBounds.windowTo,
generatedAt: windowBounds.generatedAt,
freshness: sampleFreshness(count),
aggregationKind: exact ? "exact" : "histogram",
approximation: exact ? "exact" : "bucketed",
bucketBoundaries: exact ? undefined : bucketBoundariesForRow(row),
lowSample: count > 0 && count < LOW_SAMPLE_THRESHOLD,
sampleState: sampleState(count)
};
const tone = summaryToneForRow(nextRow, p95, count);
return { ...nextRow, tone, problem: summaryProblemForRow(nextRow, p95, count, tone) };
});
}
function normalizeBackendEvidence(input?: BackendPerformanceEvidenceSnapshot | null) {
const rows = Array.isArray(input?.rows) ? input.rows.map(normalizeBackendEvidenceRow).filter(Boolean) as BackendPerformanceEvidenceRow[] : [];
const cache = Array.isArray(input?.cache) ? input.cache.map(normalizeBackendCacheEvidenceRow).filter(Boolean) as ReturnType<typeof normalizeBackendCacheEvidenceRow>[] : [];
return {
schemaVersion: "hwlab-backend-performance-evidence-v1",
source: sanitizeLabelValue(input?.source ?? "cloud-api-backend-performance-store"),
observedAt: isoOrNull(input?.observedAt),
sampleCount: finiteNonNegativeInteger(input?.sampleCount),
retainedSampleCount: finiteNonNegativeInteger(input?.retainedSampleCount),
routeCount: finiteNonNegativeInteger(input?.routeCount ?? new Set(rows.map((row) => row.route)).size),
rows: rows.slice(0, 80),
cache: cache.slice(0, 80),
available: Boolean(input && String(input.schemaVersion ?? "") === "hwlab-backend-performance-evidence-v1"),
valuesRedacted: true
};
}
function normalizeBackendEvidenceRow(input: BackendPerformanceEvidenceRow) {
const route = webPerformanceRouteTemplate(input?.route ?? "");
if (!route || route === "/") return null;
const responseBytes = input.responseBytes && typeof input.responseBytes === "object" ? {
count: finiteNonNegativeInteger(input.responseBytes.count),
average: finiteNonNegativeInteger(input.responseBytes.average),
p50: finiteNonNegativeInteger(input.responseBytes.p50),
p75: finiteNonNegativeInteger(input.responseBytes.p75),
p95: finiteNonNegativeInteger(input.responseBytes.p95)
} : null;
return {
route,
method: normalizeMethod(input.method),
statusClass: normalizeStatusClass(input.statusClass),
outcome: sanitizeLabelValue(input.outcome ?? "unknown", "unknown"),
count: finiteNonNegativeInteger(input.count),
average: finiteNonNegativeMetric(input.average),
p50: finiteNonNegativeMetric(input.p50),
p75: finiteNonNegativeMetric(input.p75),
p95: finiteNonNegativeMetric(input.p95),
firstObservedAt: isoOrNull(input.firstObservedAt),
lastObservedAt: isoOrNull(input.lastObservedAt),
responseBytes,
phases: Array.isArray(input.phases) ? input.phases.map(normalizeBackendEvidencePhase).filter(Boolean).slice(0, 8) : []
};
}
function normalizeBackendEvidencePhase(input: { phase?: unknown; outcome?: unknown; count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown }) {
const phase = sanitizeMetricName(input?.phase, "unknown").slice(0, 64) || "unknown";
return {
phase,
outcome: sanitizeLabelValue(input?.outcome ?? "unknown", "unknown"),
count: finiteNonNegativeInteger(input?.count),
average: finiteNonNegativeMetric(input?.average),
p50: finiteNonNegativeMetric(input?.p50),
p75: finiteNonNegativeMetric(input?.p75),
p95: finiteNonNegativeMetric(input?.p95)
};
}
function normalizeBackendCacheEvidenceRow(input: BackendPerformanceCacheEvidenceRow) {
const route = webPerformanceRouteTemplate(input?.route ?? "");
if (!route || route === "/") return null;
return {
route,
cacheKeyClass: sanitizeMetricName(input.cacheKeyClass, "unknown").slice(0, 64) || "unknown",
count: finiteNonNegativeInteger(input.count),
hitCount: finiteNonNegativeInteger(input.hitCount),
missCount: finiteNonNegativeInteger(input.missCount),
staleCount: finiteNonNegativeInteger(input.staleCount),
unavailableCount: finiteNonNegativeInteger(input.unavailableCount),
dbQueryAvoidedCount: finiteNonNegativeInteger(input.dbQueryAvoidedCount),
hitRatio: boundedRatio(input.hitRatio),
dbQueryAvoidedRatio: boundedRatio(input.dbQueryAvoidedRatio),
unavailableRatio: boundedRatio(input.unavailableRatio),
operationDuration: normalizeMetricStats(input.operationDuration, "seconds"),
payloadBytes: normalizeMetricStats(input.payloadBytes, "bytes"),
cacheAgeMs: normalizeMetricStats(input.cacheAgeMs, "milliseconds"),
freshnessSloMs: normalizeMetricStats(input.freshnessSloMs, "milliseconds"),
projectionSeqMax: finiteNonNegativeInteger(input.projectionSeqMax),
firstObservedAt: isoOrNull(input.firstObservedAt),
lastObservedAt: isoOrNull(input.lastObservedAt),
valuesRedacted: true
};
}
function normalizeMetricStats(input: { count?: unknown; average?: unknown; p50?: unknown; p75?: unknown; p95?: unknown; unit?: unknown } | null | undefined, unit: string) {
if (!input || typeof input !== "object") return null;
return {
count: finiteNonNegativeInteger(input.count),
average: finiteNonNegativeMetric(input.average),
p50: finiteNonNegativeMetric(input.p50),
p75: finiteNonNegativeMetric(input.p75),
p95: finiteNonNegativeMetric(input.p95),
unit
};
}
function attachBackendEvidenceToRows(rows: PerformanceSummaryRow[], evidence: ReturnType<typeof normalizeBackendEvidence>) {
return rows.map((row) => {
if (row.kind !== "api" || row.metric !== "api_request") return row;
return { ...row, backendEvidence: backendEvidenceForApiRow(row, evidence) };
});
}
function backendEvidenceForApiRow(row: PerformanceSummaryRow, evidence: ReturnType<typeof normalizeBackendEvidence>): PerformanceRowBackendEvidence {
const route = webPerformanceRouteTemplate(row.route);
const method = normalizeMethod(row.method);
if (!evidence.available) {
return {
status: "unavailable",
statusLabel: "后端证据未接入",
diagnostic: "backend_evidence_unavailable",
diagnosticLabel: "后端证据未接入",
detail: "当前 summary 没有收到 backend evidence snapshot,无法把 RUM 慢样本与服务端 request 对齐。",
route,
method,
count: 0,
lastObservedAt: null,
phases: []
};
}
const candidates = evidence.rows.filter((item) => item.route === route && item.method === method);
const matched = candidates.find((item) => item.statusClass === row.statusClass && item.outcome === row.outcome) ?? candidates[0] ?? null;
if (!matched) {
return {
status: "missing",
statusLabel: "后端无匹配样本",
diagnostic: "no_backend_sample_window",
diagnosticLabel: "窗口内无后端样本",
detail: `当前窗口没有匹配 ${method} ${route} 的后端 request 样本;优先检查浏览器采集窗口、边缘/缓存路径或后端 evidence 覆盖范围。`,
route,
method,
count: 0,
lastObservedAt: null,
phases: []
};
}
const count = finiteNonNegativeInteger(matched.count);
const backendP95 = finiteNonNegativeMetric(matched.p95);
const rumP95 = finiteNonNegativeMetric(row.p95);
const diagnostic = backendEvidenceDiagnostic({ count, backendP95, rumP95 });
return {
status: "matched",
statusLabel: "已匹配后端",
diagnostic,
diagnosticLabel: backendEvidenceDiagnosticLabel(diagnostic),
detail: backendEvidenceDetail({ diagnostic, count, backendP95, rumP95, phases: matched.phases ?? [] }),
route: matched.route,
method: matched.method,
count,
p50: finiteNonNegativeMetric(matched.p50),
p75: finiteNonNegativeMetric(matched.p75),
p95: backendP95,
responseBytesP95: matched.responseBytes?.p95 ?? null,
lastObservedAt: isoOrNull(matched.lastObservedAt),
phases: (matched.phases ?? []).slice(0, 5).map((phase) => ({ phase: String(phase.phase ?? "unknown"), outcome: String(phase.outcome ?? "unknown"), count: finiteNonNegativeInteger(phase.count), p95: finiteNonNegativeMetric(phase.p95) }))
};
}
function backendEvidenceDiagnostic(input: { count: number; backendP95: number; rumP95: number }) {
if (input.count > 0 && input.count < LOW_SAMPLE_THRESHOLD) return "backend_low_sample";
if (input.rumP95 >= 1 && input.backendP95 > 0 && input.backendP95 <= Math.max(0.25, input.rumP95 * 0.5)) return "rum_slower_than_backend";
if (input.backendP95 >= 1 && input.backendP95 >= input.rumP95 * 0.75) return "backend_slow_aligned";
return "backend_matched";
}
function backendEvidenceDiagnosticLabel(value: string) {
const labels: Record<string, string> = {
backend_low_sample: "后端低样本",
backend_slow_aligned: "后端慢已对齐",
rum_slower_than_backend: "RUM 慢于后端",
backend_matched: "后端样本已匹配"
};
return labels[value] ?? value;
}
function backendEvidenceDetail(input: { diagnostic: string; count: number; backendP95: number; rumP95: number; phases: Array<{ phase?: unknown; p95?: unknown }> }) {
const topPhase = input.phases?.[0];
const phaseText = topPhase ? `;最慢阶段 ${String(topPhase.phase ?? "unknown")} P95 ${formatBackendSeconds(finiteNonNegativeMetric(topPhase.p95))}` : "";
if (input.diagnostic === "rum_slower_than_backend") return `RUM P95 ${formatBackendSeconds(input.rumP95)},后端 P95 ${formatBackendSeconds(input.backendP95)},差值更可能在浏览器网络、排队、边缘代理或采集端${phaseText}。`;
if (input.diagnostic === "backend_slow_aligned") return `RUM P95 ${formatBackendSeconds(input.rumP95)} 与后端 P95 ${formatBackendSeconds(input.backendP95)} 同向,优先看后端阶段${phaseText}。`;
if (input.diagnostic === "backend_low_sample") return `仅 ${input.count} 个后端样本,已匹配但不足以稳定判断${phaseText}。`;
return `${input.count} 个后端样本已匹配,后端 P95 ${formatBackendSeconds(input.backendP95)}${phaseText}。`;
}
function backendCacheEvidenceSummaryRows(evidence: ReturnType<typeof normalizeBackendEvidence>, windowBounds: { windowFrom: string | null; windowTo: string; generatedAt: string }): PerformanceSummaryRow[] {
if (!evidence.available) return [];
const rows: PerformanceSummaryRow[] = [];
for (const item of evidence.cache) {
rows.push(cacheEvidenceRow({ metric: "cache_hit_ratio", route: item.route, cache: item.cacheKeyClass, value: item.hitRatio, count: item.count, unit: "score", windowBounds, outcome: "ok" }));
rows.push(cacheEvidenceRow({ metric: "db_query_avoided", route: item.route, cache: item.cacheKeyClass, value: item.dbQueryAvoidedRatio, count: item.count, unit: "score", windowBounds, outcome: "ok" }));
rows.push(cacheEvidenceRow({ metric: "cache_unavailable", route: item.route, cache: item.cacheKeyClass, value: item.unavailableRatio, count: item.count, unit: "score", windowBounds, outcome: item.unavailableCount > 0 ? "error" : "ok" }));
if (item.route === "/v1/workbench/sessions" && item.operationDuration) {
rows.push(cacheEvidenceRow({
metric: "sessions_api_p95",
route: item.route,
cache: item.cacheKeyClass,
value: item.operationDuration.p95,
p50: item.operationDuration.p50,
p75: item.operationDuration.p75,
p95: item.operationDuration.p95,
count: item.operationDuration.count || item.count,
unit: "seconds",
windowBounds,
outcome: "ok"
}));
}
}
return rows;
}
function cacheEvidenceRow(input: { metric: string; route: string; cache: string; value: number; p50?: number; p75?: number; p95?: number; count: number; unit: "seconds" | "score"; outcome: string; windowBounds: { windowFrom: string | null; windowTo: string; generatedAt: string } }): PerformanceSummaryRow {
const count = finiteNonNegativeInteger(input.count);
const value = finiteNonNegativeMetric(input.value);
const p50 = input.p50 === undefined ? value : finiteNonNegativeMetric(input.p50);
const p75 = input.p75 === undefined ? value : finiteNonNegativeMetric(input.p75);
const p95 = input.p95 === undefined ? value : finiteNonNegativeMetric(input.p95);
const sample = sampleState(count);
let tone: "ok" | "warn" | "blocked" | "source" = count < LOW_SAMPLE_THRESHOLD ? "source" : "ok";
if (sample === "ok" && input.metric === "cache_unavailable" && p95 > 0) tone = "blocked";
if (sample === "ok" && input.metric === "sessions_api_p95") tone = thresholdTone(p95, 1, 2.5);
const problem = tone === "source" ? (count <= 0 ? "no-sample" : "low-sample") : tone === "ok" ? "ok" : input.metric === "cache_unavailable" ? "cache-unavailable" : `slow-${input.metric}`;
return {
kind: "workbench_cache",
metric: input.metric,
route: input.route,
method: "-",
statusClass: "-",
outcome: input.outcome,
count,
average: value,
p50,
p75,
p95,
unit: input.unit,
tone,
problem,
lowSample: count > 0 && count < LOW_SAMPLE_THRESHOLD,
sampleState: sample,
sourceFamily: "backend_cache_evidence",
windowFrom: input.windowBounds.windowFrom,
windowTo: input.windowBounds.windowTo,
generatedAt: input.windowBounds.generatedAt,
freshness: sampleFreshness(count),
aggregationKind: "exact",
approximation: "exact",
cache: input.cache
};
}
function formatBackendSeconds(value: number) {
if (!Number.isFinite(value)) return "未知";
if (value < 1) return `${Math.round(value * 1000)}ms`;
return `${roundMetric(value)}s`;
}
function finiteNonNegativeMetric(value: unknown) {
const number = Number(value);
return Number.isFinite(number) && number >= 0 ? roundMetric(number) : 0;
}
function boundedRatio(value: unknown) {
const number = Number(value);
if (!Number.isFinite(number) || number < 0) return 0;
return Math.min(1, roundMetric(number));
}
function finiteNonNegativeInteger(value: unknown) {
const number = Number(value);
return Number.isFinite(number) && number >= 0 ? Math.trunc(number) : 0;
}
function isoOrNull(value: unknown): string | null {
const parsed = Date.parse(String(value ?? ""));
return Number.isFinite(parsed) ? new Date(parsed).toISOString() : null;
}
function summaryRowIdentityForSample(sample: RecordedPerformanceSample): Record<string, unknown> | null {
const labels = sample.labels;
if (sample.series === "web_duration" || sample.series === "layout_shift") {
return {
kind: labels.kind,
metric: labels.metric,
route: labels.route,
method: labels.method,
statusClass: labels.status_class,
outcome: labels.outcome
};
}
if (sample.series === "workbench_journey") {
return {
kind: "workbench_journey",
metric: labels.journey,
route: labels.route,
method: "-",
statusClass: "-",
outcome: labels.outcome,
backend: labels.backend,
transport: labels.transport,
targetState: labels.target_state,
cache: labels.cache,
source: labels.source,
entry: labels.entry,
authState: labels.auth_state
};
}
if (sample.series === "workbench_event_phase") {
return {
kind: "workbench_event_phase",
metric: labels.phase,
route: "workbench-events",
method: "-",
statusClass: "-",
outcome: labels.outcome,
backend: labels.backend,
transport: labels.transport,
eventType: labels.event_type,
phase: labels.phase
};
}
if (sample.series === "workbench_backend_event_visible") {
return {
kind: "workbench_backend_event_visible",
metric: "backend_event_to_visible",
route: "workbench-events",
method: "-",
statusClass: "-",
outcome: labels.outcome,
backend: labels.backend,
transport: labels.transport,
eventType: labels.event_type
};
}
return null;
}
function summaryRowKey(row: Record<string, unknown>) {
const fields = ["kind", "metric", "route", "method", "statusClass", "outcome", "backend", "transport", "targetState", "cache", "source", "entry", "authState", "eventType", "phase"];
const labels: Record<string, string> = {};
for (const field of fields) labels[field] = String(row[field] ?? "");
return stableLabelKey(labels);
}
function summaryToneForRow(row: PerformanceSummaryRow, p95: number, count: number): "ok" | "warn" | "blocked" | "source" {
if (count <= 0 || count < LOW_SAMPLE_THRESHOLD) return "source";
if (row.kind === "workbench_journey") {
const threshold = workbenchJourneyThreshold(row.metric);
return workbenchTone(row.outcome, p95, count, threshold.warn, threshold.blocked);
}
if (row.kind === "workbench_event_phase") {
const threshold = workbenchEventPhaseThreshold(row.metric);
return workbenchTone(row.outcome, p95, count, threshold.warn, threshold.blocked);
}
if (row.kind === "workbench_backend_event_visible") {
const threshold = workbenchJourneyThreshold("backend_event_to_visible");
return workbenchTone(row.outcome, p95, count, threshold.warn, threshold.blocked);
}
return performanceTone({ metric: row.metric, outcome: row.outcome, status_class: row.statusClass }, p95, count, row.unit === "score" ? "score" : "seconds");
}
function summaryProblemForRow(row: PerformanceSummaryRow, p95: number, count: number, tone: string) {
if (count <= 0) return "no-sample";
if (row.kind === "workbench_journey" || row.kind === "workbench_event_phase" || row.kind === "workbench_backend_event_visible" || row.kind === "workbench_cache") return workbenchProblem(row.outcome, row.metric, count, tone);
return performanceProblem({ metric: row.metric, outcome: row.outcome, status_class: row.statusClass }, p95, count, row.unit === "score" ? "score" : "seconds", tone);
}
function isPerformanceProblemRow(row: PerformanceSummaryRow) {
if ((row.kind === "workbench_journey" || row.kind === "workbench_event_phase" || row.kind === "workbench_backend_event_visible" || row.kind === "workbench_cache") && row.sampleState !== "ok") return false;
return row.tone === "blocked" || row.tone === "warn" || row.outcome !== "ok" || row.statusClass === "network" || row.statusClass === "5xx" || row.statusClass === "4xx";
}
function sourceFamilyForRow(row: PerformanceSummaryRow) {
if (row.kind === "api") return "rum_api_timing";
if (row.kind === "web_vital") return "rum_web_vitals";
if (row.kind === "navigation") return "rum_navigation";
if (row.kind === "long_task") return "rum_long_task";
if (row.kind === "workbench_journey") return "workbench_journey";
if (row.kind === "workbench_event_phase") return "workbench_event_phase";
if (row.kind === "workbench_backend_event_visible") return "workbench_backend_event_visible";
if (row.kind === "workbench_cache") return "backend_cache_evidence";
return "unknown";
}
function sampleFreshness(count: number): "fresh" | "low-sample" | "empty" {
if (count <= 0) return "empty";
return count < LOW_SAMPLE_THRESHOLD ? "low-sample" : "fresh";
}
function bucketBoundariesForRow(row: PerformanceSummaryRow) {
if (row.unit === "score") return CLS_BUCKETS;
if (row.kind === "workbench_event_phase") return WORKBENCH_EVENT_PHASE_BUCKETS_SECONDS;
if (row.kind === "workbench_journey" || row.kind === "workbench_backend_event_visible") return WORKBENCH_JOURNEY_BUCKETS_SECONDS;
return DURATION_BUCKETS_SECONDS;
}
function workbenchJourneySummaryRows(series: Map<string, HistogramSeries>, buckets: number[]): PerformanceSummaryRow[] {
return [...series.values()].map((entry) => {
const labels = entry.labels;
const metric = labels.journey;
const row = workbenchSummaryRow(entry, buckets, {
kind: "workbench_journey",
metric,
route: labels.route,
outcome: labels.outcome,
backend: labels.backend,
transport: labels.transport,
targetState: labels.target_state,
cache: labels.cache,
source: labels.source,
entry: labels.entry,
authState: labels.auth_state,
warn: workbenchJourneyThreshold(metric).warn,
blocked: workbenchJourneyThreshold(metric).blocked
});
return row;
});
}
function workbenchEventPhaseSummaryRows(series: Map<string, HistogramSeries>, buckets: number[]): PerformanceSummaryRow[] {
return [...series.values()].map((entry) => {
const labels = entry.labels;
const metric = labels.phase;
const threshold = workbenchEventPhaseThreshold(metric);
return workbenchSummaryRow(entry, buckets, {
kind: "workbench_event_phase",
metric,
route: "workbench-events",
outcome: labels.outcome,
backend: labels.backend,
transport: labels.transport,
eventType: labels.event_type,
phase: labels.phase,
warn: threshold.warn,
blocked: threshold.blocked
});
});
}
function workbenchBackendEventVisibleSummaryRows(series: Map<string, HistogramSeries>, buckets: number[]): PerformanceSummaryRow[] {
return [...series.values()].map((entry) => {
const labels = entry.labels;
const threshold = workbenchJourneyThreshold("backend_event_to_visible");
return workbenchSummaryRow(entry, buckets, {
kind: "workbench_backend_event_visible",
metric: "backend_event_to_visible",
route: "workbench-events",
outcome: labels.outcome,
backend: labels.backend,
transport: labels.transport,
eventType: labels.event_type,
warn: threshold.warn,
blocked: threshold.blocked
});
});
}
function workbenchSummaryRow(entry: HistogramSeries, buckets: number[], input: {
kind: string;
metric: string;
route: string;
outcome: string;
warn: number;
blocked: number;
backend?: string;
transport?: string;
targetState?: string;
cache?: string;
source?: string;
entry?: string;
authState?: string;
eventType?: string;
phase?: string;
}): PerformanceSummaryRow {
const count = entry.count;
const average = count > 0 ? entry.sum / count : 0;
const p50 = histogramQuantile(entry, buckets, 0.5);
const p75 = histogramQuantile(entry, buckets, 0.75);
const p95 = histogramQuantile(entry, buckets, 0.95);
const lowSample = count > 0 && count < LOW_SAMPLE_THRESHOLD;
const tone = workbenchTone(input.outcome, p95, count, input.warn, input.blocked);
return {
kind: input.kind,
metric: input.metric,
route: input.route,
method: "-",
statusClass: "-",
outcome: input.outcome,
count,
average: roundMetric(average),
p50: roundMetric(p50),
p75: roundMetric(p75),
p95: roundMetric(p95),
unit: "seconds",
tone,
problem: workbenchProblem(input.outcome, input.metric, count, tone),
lowSample,
sampleState: sampleState(count),
backend: input.backend,
transport: input.transport,
targetState: input.targetState,
cache: input.cache,
source: input.source,
entry: input.entry,
authState: input.authState,
eventType: input.eventType,
phase: input.phase
};
}
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 workbenchTone(outcome: string, p95: number, count: number, warn: number, blocked: number) {
if (outcome !== "ok") return "blocked";
if (count <= 0 || count < LOW_SAMPLE_THRESHOLD) return "source";
return thresholdTone(p95, warn, blocked);
}
function workbenchJourneyThreshold(metric: string) {
if (metric === "session_switch_first_visible") return { warn: 1, blocked: 3 };
if (metric === "session_switch_full_load") return { warn: 2.5, blocked: 8 };
if (metric === "workbench_open_first_visible") return { warn: 2.5, blocked: 5 };
if (metric === "workbench_open_full_load") return { warn: 5, blocked: 13 };
if (metric === "backend_event_to_visible") return { warn: 3, blocked: 10 };
return { warn: 5, blocked: 15 };
}
function workbenchEventPhaseThreshold(metric: string) {
if (metric === "append_to_sse") return { warn: 0.25, blocked: 1 };
if (metric === "created_to_append" || metric === "receive_to_project" || metric === "project_to_paint") return { warn: 0.5, blocked: 2 };
if (metric === "sse_to_receive") return { warn: 1, blocked: 3 };
if (metric === "user_submit_to_api_accepted") return { warn: 1, blocked: 3 };
return { warn: 5, blocked: 15 };
}
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 workbenchProblem(outcome: string, metric: string, count: number, tone: string) {
if (count <= 0) return "no-sample";
if (count < LOW_SAMPLE_THRESHOLD) return "low-sample";
if (outcome !== "ok") return outcome;
if (tone === "blocked" || tone === "warn") return `slow-${metric}`;
return "ok";
}
function sampleState(count: number): "ok" | "low-sample" | "empty" {
if (count <= 0) return "empty";
return count < LOW_SAMPLE_THRESHOLD ? "low-sample" : "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 buildPerformanceCollectionHealth(input: {
observedAt: string;
generatedAtMs: number;
sampleWindow: PerformanceSummaryWindow;
summary: Record<string, number | string | null>;
windowSamples: RecordedPerformanceSample[];
retainedSamples: RecordedPerformanceSample[];
rows: PerformanceSummaryRow[];
}): PerformanceCollectionHealth {
const sampleCount = numberField(input.summary.sampleCount);
const sampleSeries = numberField(input.summary.sampleSeries)
+ numberField(input.summary.workbenchJourneySeries)
+ numberField(input.summary.workbenchEventPhaseSeries)
+ numberField(input.summary.workbenchBackendEventVisibleSeries)
+ numberField(input.summary.workbenchUiEventSeries);
const firstSampleMs = minSampleAt(input.windowSamples);
const lastSampleMs = maxSampleAt(input.windowSamples);
const lastRetainedSampleMs = maxSampleAt(input.retainedSamples);
const sourceFamilyCounts = collectionSourceFamilyCounts(input.rows);
const unknownAttribution = collectionUnknownAttribution(input.rows);
const diagnostics: PerformanceCollectionHealthDiagnostic[] = [];
let status: PerformanceCollectionHealth["status"] = "fresh";
let reason = "window_has_samples";
let reasonLabel = "当前窗口采集正常";
if (input.retainedSamples.length <= 0) {
status = "waiting";
reason = "no_samples_retained";
reasonLabel = "采集器尚未上报样本";
diagnostics.push({ code: reason, label: "暂无采集样本", tone: "source", detail: "Cloud API RUM store 当前没有保留任何浏览器性能样本。" });
} else if (sampleCount <= 0) {
status = "stale";
reason = "no_samples_in_window";
reasonLabel = `${input.sampleWindow.label}无样本`;
diagnostics.push({ code: reason, label: "当前窗口无样本", tone: "source", detail: "存在历史保留样本,但当前所选时间窗口没有样本;请切换更大窗口或等待新上报。" });
} else if (sampleCount < LOW_SAMPLE_THRESHOLD) {
status = "low-sample";
reason = "low_sample_window";
reasonLabel = "当前窗口低样本";
diagnostics.push({ code: reason, label: "低样本窗口", tone: "warn", detail: `当前窗口只有 ${sampleCount} 个样本,低于 ${LOW_SAMPLE_THRESHOLD} 个样本阈值。` });
}
if (unknownAttribution.rowsWithUnknown > 0) {
if (status === "fresh") {
status = "degraded";
reason = "unknown_attribution";
reasonLabel = "归因字段不完整";
}
diagnostics.push({
code: "unknown_attribution",
label: "工作台归因不完整",
tone: "warn",
detail: `${unknownAttribution.rowsWithUnknown} 条工作台序列存在 backend 或 transport unknown,影响慢路径归因。`
});
}
if (sourceFamilyCounts.length > 1) {
diagnostics.push({ code: "mixed_source_family", label: "多来源样本", tone: "ok", detail: `当前窗口包含 ${sourceFamilyCounts.length} 类低基数来源。` });
}
if (!diagnostics.length) diagnostics.push({ code: "ok", label: "采集健康", tone: "ok", detail: "当前窗口有足够样本,且没有发现低样本、缺样或 unknown 归因问题。" });
return {
schemaVersion: "hwlab-web-performance-collection-health-v1",
status,
statusLabel: collectionStatusLabel(status),
reason,
reasonLabel,
sampleCount,
retainedSampleCount: input.retainedSamples.length,
sampleSeries,
lowSampleThreshold: LOW_SAMPLE_THRESHOLD,
firstSampleAt: isoFromMs(firstSampleMs),
lastSampleAt: isoFromMs(lastSampleMs),
lastRetainedSampleAt: isoFromMs(lastRetainedSampleMs),
secondsSinceLastSample: lastRetainedSampleMs === null ? null : Math.max(0, Math.round((input.generatedAtMs - lastRetainedSampleMs) / 1000)),
windowCoverageSeconds: firstSampleMs === null || lastSampleMs === null ? null : Math.max(0, Math.round((lastSampleMs - firstSampleMs) / 1000)),
sourceFamilyCounts,
unknownAttribution,
diagnostics
};
}
function collectionSourceFamilyCounts(rows: PerformanceSummaryRow[]) {
const counts = new Map<string, { sourceFamily: string; rowCount: number; sampleCount: number }>();
for (const row of rows) {
const sourceFamily = String(row.sourceFamily ?? sourceFamilyForRow(row) ?? "unknown");
const entry = counts.get(sourceFamily) ?? { sourceFamily, rowCount: 0, sampleCount: 0 };
entry.rowCount += 1;
entry.sampleCount += Math.max(0, Number(row.count) || 0);
counts.set(sourceFamily, entry);
}
return [...counts.values()].sort((left, right) => right.sampleCount - left.sampleCount || left.sourceFamily.localeCompare(right.sourceFamily));
}
function collectionUnknownAttribution(rows: PerformanceSummaryRow[]) {
const workbenchRows = rows.filter((row) => row.kind === "workbench_journey" || row.kind === "workbench_event_phase" || row.kind === "workbench_backend_event_visible");
const attributionRows = workbenchRows.filter(rowNeedsWorkbenchAttribution);
const backendUnknownRows = attributionRows.filter((row) => unknownAttributionValue(row.backend)).length;
const transportUnknownRows = attributionRows.filter((row) => unknownAttributionValue(row.transport)).length;
const rowsWithUnknown = attributionRows.filter((row) => unknownAttributionValue(row.backend) || unknownAttributionValue(row.transport)).length;
const samplesWithUnknown = attributionRows.reduce((sum, row) => sum + ((unknownAttributionValue(row.backend) || unknownAttributionValue(row.transport)) ? Math.max(0, Number(row.count) || 0) : 0), 0);
return { workbenchRows: workbenchRows.length, attributableRows: attributionRows.length, rowsWithUnknown, samplesWithUnknown, backendUnknownRows, transportUnknownRows };
}
function rowNeedsWorkbenchAttribution(row: PerformanceSummaryRow) {
if (row.kind === "workbench_event_phase" || row.kind === "workbench_backend_event_visible") return true;
if (row.kind !== "workbench_journey") return false;
return row.metric === "submit_to_first_visible" || row.metric === "submit_to_failure" || row.metric === "backend_event_to_visible";
}
function unknownAttributionValue(value: unknown) {
const text = String(value ?? "").trim().toLowerCase();
return !text || text === "-" || text === "unknown";
}
function minSampleAt(samples: RecordedPerformanceSample[]) {
const values = samples.map((sample) => sample.atMs).filter(Number.isFinite);
return values.length ? Math.min(...values) : null;
}
function maxSampleAt(samples: RecordedPerformanceSample[]) {
const values = samples.map((sample) => sample.atMs).filter(Number.isFinite);
return values.length ? Math.max(...values) : null;
}
function isoFromMs(value: number | null) {
return value === null ? null : new Date(value).toISOString();
}
function collectionStatusLabel(status: PerformanceCollectionHealth["status"]) {
if (status === "fresh") return "采集正常";
if (status === "low-sample") return "低样本";
if (status === "stale") return "当前窗口无样本";
if (status === "degraded") return "归因不完整";
return "等待数据";
}
function buildPerformanceDashboard(input: {
observedAt: string;
source: string;
namespace: string;
gitopsTarget: string;
sampleWindow: PerformanceSummaryWindow;
summary: Record<string, number | string | null>;
collectionHealth: PerformanceCollectionHealth;
apiRoutes: PerformanceSummaryRow[];
webVitals: PerformanceSummaryRow[];
longTasks: PerformanceSummaryRow[];
problems: PerformanceSummaryRow[];
workbenchJourneys: PerformanceSummaryRow[];
workbenchEventPhases: PerformanceSummaryRow[];
workbenchBackendEvents: PerformanceSummaryRow[];
rows: PerformanceSummaryRow[];
workbenchRows: PerformanceSummaryRow[];
}) {
const allRows = [...input.rows, ...input.workbenchRows];
const sampleCount = numberField(input.summary.sampleCount);
const problemCount = numberField(input.summary.problemCount);
const status = String(input.summary.status ?? "waiting");
const collectionHealth = input.collectionHealth;
const trends = [
dashboardTrend("workbench-experience", "工作台体感趋势", "首屏、会话切换和提交首个可见结果的 P95", "seconds", input.workbenchJourneys),
dashboardTrend("backend-visible", "后端事件可见延迟", "AgentRun/backend 事件到浏览器可见的 P95", "seconds", input.workbenchBackendEvents),
dashboardTrend("api-timing", "同源 API 耗时", "Cloud Web 同源 API 请求 P95", "seconds", input.apiRoutes),
dashboardTrend("web-vitals", "浏览器核心指标", "LCP/INP/CLS/FCP/TTFB 当前窗口", "mixed", input.webVitals)
].filter((trend) => trend.points.length > 0);
return {
schemaVersion: "hwlab-web-performance-dashboard-v1",
generatedAt: input.observedAt,
sampleWindow: {
id: input.sampleWindow.id,
label: input.sampleWindow.label,
seconds: input.sampleWindow.milliseconds === null ? null : Math.round(input.sampleWindow.milliseconds / 1000),
windowFrom: input.summary.windowFrom ?? null,
windowTo: input.summary.windowTo ?? input.observedAt,
generatedAt: input.summary.generatedAt ?? input.observedAt,
aggregationKind: input.summary.aggregationKind ?? "exact",
approximation: input.summary.approximation ?? "exact",
buckets: [{ id: input.sampleWindow.id, label: input.sampleWindow.label, observedAt: input.observedAt, sampleCount }]
},
freshness: {
observedAt: input.observedAt,
source: input.source,
namespace: input.namespace,
gitopsTarget: input.gitopsTarget,
status: collectionHealth.status,
statusLabel: collectionHealth.statusLabel,
reason: collectionHealth.reason,
reasonLabel: collectionHealth.reasonLabel,
lowSampleThreshold: numberField(input.summary.lowSampleThreshold),
generatedAt: input.summary.generatedAt ?? input.observedAt,
windowFrom: input.summary.windowFrom ?? null,
windowTo: input.summary.windowTo ?? input.observedAt,
sampleCount,
sourceFamily: "mixed",
lastSampleAt: collectionHealth.lastSampleAt,
lastRetainedSampleAt: collectionHealth.lastRetainedSampleAt,
secondsSinceLastSample: collectionHealth.secondsSinceLastSample
},
collectionHealth,
cards: [
{ id: "health", label: "采集状态", value: collectionHealth.statusLabel, unit: "状态", tone: dashboardTone(collectionHealth.status), detail: collectionHealth.reasonLabel },
{ id: "samples", label: "样本数", value: sampleCount, unit: "样本", tone: sampleCount === 0 ? "source" : "ok", detail: `${input.sampleWindow.label} · ${numberField(input.summary.sampleSeries)} 个序列` },
{ id: "workbench", label: "工作台序列", value: numberField(input.summary.workbenchJourneySeries) + numberField(input.summary.workbenchEventPhaseSeries) + numberField(input.summary.workbenchBackendEventVisibleSeries), unit: "序列", tone: "ok", detail: `${input.namespace} / ${input.gitopsTarget}` },
{ id: "problems", label: "问题行", value: problemCount, unit: "条", tone: problemCount > 0 ? "warn" : "ok", detail: "预警、阻塞或非正常结果" }
],
trends,
distributions: [
dashboardDistribution("status", "状态分布", "按健康状态聚合当前窗口行数", countRowsBy(allRows, (row) => toneLabel(row.tone))),
dashboardDistribution("problems", "问题分布", "按问题类型聚合预警和阻塞行", countRowsBy(input.problems, (row) => problemLabel(row.problem || row.outcome))),
dashboardDistribution("samples", "样本状态", "正常、低样本和暂无数据分布", countRowsBy(allRows, (row) => sampleStateLabel(row.sampleState)))
].filter((item) => item.buckets.length > 0),
topN: [
dashboardTopN("top-api", "慢 API TopN", "同源 API P95 最慢路由", "seconds", input.apiRoutes),
dashboardTopN("top-workbench", "工作台慢路径 TopN", "工作台 journey 和事件可见延迟", "seconds", [...input.workbenchJourneys, ...input.workbenchBackendEvents]),
dashboardTopN("top-long-task", "长任务 TopN", "主线程长任务当前窗口", "seconds", input.longTasks)
].filter((item) => item.rows.length > 0),
source: {
rows: input.rows,
workbenchRows: input.workbenchRows
}
};
}
function dashboardTrend(id: string, title: string, subtitle: string, unit: string, rows: PerformanceSummaryRow[]) {
return {
id,
title,
subtitle,
unit,
points: rows.slice(0, 8).map(dashboardPoint)
};
}
function dashboardPoint(row: PerformanceSummaryRow): PerformanceDashboardPoint {
return {
label: metricLabel(row),
detail: rowDetail(row),
value: row.p95,
p50: row.p50,
p75: row.p75,
p95: row.p95,
count: row.count,
tone: row.tone,
sampleState: row.sampleState ?? "ok"
};
}
function dashboardDistribution(id: string, title: string, subtitle: string, counts: Map<string, number>) {
const buckets = [...counts.entries()]
.map(([label, count]) => ({ label, count, tone: distributionTone(label) }))
.sort((left, right) => right.count - left.count || left.label.localeCompare(right.label, "zh-Hans-CN"));
return { id, title, subtitle, unit: "count", buckets };
}
function dashboardTopN(id: string, title: string, subtitle: string, unit: string, rows: PerformanceSummaryRow[]) {
const topRows: PerformanceDashboardTopRow[] = rows.slice(0, 8).map((row) => ({
label: metricLabel(row),
detail: rowDetail(row),
value: row.p95,
unit: row.unit === "score" ? "score" : unit,
count: row.count,
tone: row.tone
}));
return { id, title, subtitle, unit, rows: topRows };
}
function countRowsBy(rows: PerformanceSummaryRow[], getLabel: (row: PerformanceSummaryRow) => string) {
const counts = new Map<string, number>();
for (const row of rows) counts.set(getLabel(row), (counts.get(getLabel(row)) ?? 0) + Math.max(1, row.count));
return counts;
}
function metricLabel(row: PerformanceSummaryRow) {
const metric = row.metric || row.phase || row.kind || "unknown";
const labels: Record<string, string> = {
submit_to_first_visible: "提交到首个可见结果",
submit_to_failure: "提交失败可见",
backend_event_to_visible: "后端事件到可见",
cache_hit_ratio: "缓存命中率",
db_query_avoided: "DB 查询避免率",
cache_unavailable: "缓存不可用率",
sessions_api_p95: "会话 API P95",
session_switch_first_visible: "切换会话首个可见",
session_switch_full_load: "切换会话完整加载",
workbench_open_first_visible: "打开工作台首个可见",
workbench_open_full_load: "打开工作台完整加载",
created_to_append: "创建到写入 Trace",
append_to_sse: "Trace 写入到 SSE",
sse_to_receive: "SSE 到浏览器接收",
receive_to_project: "接收到状态投影",
project_to_paint: "投影到画面可见",
user_submit_to_api_accepted: "提交到 API 接收",
api_accepted_to_backend_event: "API 接收到后端事件",
api_request: "同源 API 请求",
long_task: "主线程长任务",
lcp: "最大内容绘制",
inp: "交互响应",
fid: "首次输入延迟",
cls: "布局偏移",
navigation_ttfb: "首字节时间",
navigation_dom_content_loaded: "DOM 内容加载",
navigation_load: "页面加载完成"
};
return labels[metric] ?? metric.replace(/_/gu, " ");
}
function rowDetail(row: PerformanceSummaryRow) {
const route = dashboardRouteLabel(row.route);
const parts = [
route,
row.eventType ? `事件:${eventTypeLabel(row.eventType)}` : "",
row.phase ? `阶段:${metricLabel({ ...row, metric: row.phase })}` : "",
row.backend ? `后端:${row.backend}` : "",
row.transport ? `传输:${transportLabel(row.transport)}` : "",
row.outcome ? `结果:${outcomeLabel(row.outcome)}` : ""
].filter(Boolean);
return parts.join(" / ") || "当前窗口";
}
function dashboardRouteLabel(route: string | undefined) {
const value = String(route ?? "").trim();
if (!value || value === "-") return "";
return value
.replace(/:sessionId/gu, ":会话")
.replace(/:traceId/gu, ":轨迹")
.replace(/:runId/gu, ":运行")
.replace(/:threadId/gu, ":线程")
.replace(/:turnId/gu, ":轮次");
}
function toneLabel(tone: string | undefined) {
if (tone === "ok") return "正常";
if (tone === "warn") return "预警";
if (tone === "blocked") return "阻塞";
return "等待数据";
}
function sampleStateLabel(state: string | undefined) {
if (state === "ok") return "正常样本";
if (state === "low-sample") return "低样本";
return "暂无数据";
}
function dashboardStatusLabel(status: string) {
if (status === "fresh") return "采集正常";
if (status === "low-sample") return "低样本";
if (status === "stale") return "当前窗口无样本";
if (status === "degraded") return "归因不完整";
if (status === "ok") return "正常";
if (status === "watch") return "预警";
if (status === "warming") return "低样本";
return "等待数据";
}
function dashboardTone(status: string) {
if (status === "ok" || status === "fresh") return "ok";
if (status === "watch" || status === "degraded" || status === "low-sample") return "warn";
return "source";
}
function distributionTone(label: string) {
if (label.includes("阻塞")) return "blocked";
if (label.includes("预警") || label.includes("低样本")) return "warn";
return "ok";
}
function problemLabel(problem: string | undefined) {
const text = String(problem ?? "ok");
if (text === "ok") return "正常";
if (text === "low-sample") return "低样本";
if (text === "timeout") return "超时";
if (text === "network") return "网络失败";
if (text === "server-error") return "服务端错误";
if (text === "client-error") return "客户端错误";
if (text === "layout-shift") return "布局偏移";
if (text.startsWith("slow-")) return `慢路径:${metricLabel({ metric: text.slice(5), kind: "", route: "", method: "", statusClass: "", outcome: "", count: 0, average: 0, p50: 0, p75: 0, p95: 0, unit: "seconds", tone: "ok", problem: "" })}`;
return text.replace(/[_-]/gu, " ");
}
function eventTypeLabel(value: string) {
const labels: Record<string, string> = { assistant: "助手消息", tool_call: "工具调用", backend: "后端事件", terminal: "终态结果", error: "错误", status: "状态", request: "请求", result: "结果", unknown: "未知" };
return labels[value] ?? value;
}
function transportLabel(value: string) {
const labels: Record<string, string> = { sse: "实时流", rest_gap: "REST 补洞", poll: "轮询", none: "无", unknown: "未知" };
return labels[value] ?? value;
}
function outcomeLabel(value: string) {
const labels: Record<string, string> = { ok: "正常", timeout: "超时", error: "错误", dropped: "丢弃", stale: "滞后", partial: "部分", empty: "空结果", network: "网络", denied: "拒绝", unknown: "未知" };
return labels[value] ?? value;
}
function numberField(value: unknown) {
return Number.isFinite(Number(value)) ? Number(value) : 0;
}
function roundMetric(value: number) {
if (!Number.isFinite(value)) return 0;
return Math.round(value * 10000) / 10000;
}
function renderLabels(labels: Record<string, string>) {
return Object.entries(labels)
.map(([key, value]) => `${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 sanitizeOtelAttribute(value: unknown, maxLength: number) {
const text = String(value ?? "").trim();
if (!text) return undefined;
return text.replace(/[\u0000-\u001f\u007f]/gu, "_").slice(0, maxLength);
}
function sanitizeHex(value: unknown, length: number) {
const text = String(value ?? "").trim().toLowerCase();
return new RegExp(`^[0-9a-f]{${length}}$`, "u").test(text) && !/^0+$/u.test(text) ? text : undefined;
}
function validEpochMs(value: unknown) {
const number = finiteNumber(value, NaN);
return Number.isFinite(number) && number >= OTEL_MIN_VALID_EPOCH_MS ? number : null;
}
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 ${limit} bytes`));
}
});
request.on("end", () => resolve(body));
request.on("error", reject);
});
}
function sendJson(response, statusCode, body) {
const payload = decorateErrorPayloadForHttp(body, { response, statusCode, layer: "api", category: "web_performance" });
logErrorEnvelope(payload, { statusCode });
response.writeHead(statusCode, {
"content-type": "application/json; charset=utf-8",
"cache-control": "no-store"
});
response.end(`${JSON.stringify(payload)}\n`);
}