82 lines
1.9 KiB
TypeScript
82 lines
1.9 KiB
TypeScript
import * as cache from "@lib/cache/cache.ts";
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import { getTimeCacheKey } from "@lib/string.ts";
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export type PerformancePoint = {
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path: string;
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search: string;
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time: number;
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date: Date;
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};
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export type PerformanceRes = {
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max: number;
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res: {
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url: string;
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data: readonly [number, number, number, number];
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}[];
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};
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export const savePerformance = (url: string, milliseconds: number) => {
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const cacheKey = getTimeCacheKey();
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const u = new URL(url);
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if (u.pathname.includes("_frsh/")) return;
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u.searchParams.delete("__frsh_c");
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cache.set(
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`performance:${cacheKey}`,
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JSON.stringify({
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path: decodeURIComponent(u.pathname),
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search: u.search,
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time: Math.floor(milliseconds * 1000),
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}),
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);
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};
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export async function getPerformances(): Promise<PerformanceRes> {
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const d = new Date();
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const year = d.getFullYear();
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const month = d.getMonth().toString().padStart(2, "0");
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const day = d.getDay().toString().padStart(2, "0");
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const keys = await cache.keys(
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`performance:${year}:${month}:${day}:*`,
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);
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const performances = await Promise.all(
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keys.map(async (key) =>
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JSON.parse(await cache.get<string>(key)) as PerformancePoint
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),
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);
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let maximum = 0;
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const res = new Map<string, number[]>();
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for (const p of performances) {
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const id = p.path;
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const timings = res.get(id) || [];
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if (p.time > maximum) maximum = p.time;
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timings.push(p.time);
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res.set(id, timings);
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}
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return {
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max: maximum,
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res: [...res.entries()].map(([url, timings]) => {
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let total = 0;
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let min = Infinity;
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let max = -Infinity;
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for (const t of timings) {
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total += t;
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if (t < min) min = t;
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if (t > max) max = t;
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}
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return {
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url,
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data: [timings.length, min, total / timings.length, max] as const,
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};
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}).sort((a, b) => a.data[2] < b.data[2] ? 1 : -1),
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};
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}
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