63 lines
1.7 KiB
TypeScript
63 lines
1.7 KiB
TypeScript
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const STORAGE_KEY = "openchamber_session_load_perf"
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const MAX_EVENTS = 1_000
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type SessionLoadPerformanceOutcome = "complete" | "error" | "stale" | "deduplicated" | "canceled"
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type SessionLoadPerformanceEvent = {
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operation: string
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runtimeKey?: string
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directory?: string
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sessionID?: string
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caller?: string
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queuedMs?: number
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durationMs: number
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outcome: SessionLoadPerformanceOutcome
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retryCount?: number
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recordCount?: number
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at: number
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}
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type SessionLoadPerformanceState = {
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events: SessionLoadPerformanceEvent[]
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}
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declare global {
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interface Window {
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__openchamberSessionLoadPerformance?: SessionLoadPerformanceState
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}
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}
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const enabled = (): boolean => {
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if (typeof window === "undefined") return false
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try {
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return window.localStorage.getItem(STORAGE_KEY) === "1"
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} catch {
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return false
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}
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}
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const now = (): number => typeof performance !== "undefined" && typeof performance.now === "function"
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? performance.now()
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: Date.now()
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export function startSessionLoadPerformanceEvent(input: Omit<SessionLoadPerformanceEvent, "at" | "durationMs" | "outcome">) {
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if (!enabled()) return () => undefined
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const startedAt = now()
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return (
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outcome: SessionLoadPerformanceOutcome,
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details?: Partial<Pick<SessionLoadPerformanceEvent, "retryCount" | "recordCount">>,
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) => {
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if (typeof window === "undefined") return
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const state = window.__openchamberSessionLoadPerformance ?? { events: [] }
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state.events.push({
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...input,
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...details,
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outcome,
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durationMs: Math.max(0, now() - startedAt),
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at: Date.now(),
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})
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if (state.events.length > MAX_EVENTS) state.events.splice(0, state.events.length - MAX_EVENTS)
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window.__openchamberSessionLoadPerformance = state
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}
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}
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