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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| /* | ||
| * Copyright 2024 Adobe. All rights reserved. | ||
| * This file is licensed to you under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. You may obtain a copy | ||
| * of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software distributed under | ||
| * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS | ||
| * OF ANY KIND, either express or implied. See the License for the specific language | ||
| * governing permissions and limitations under the License. | ||
| */ | ||
|
|
||
| /* eslint-disable no-await-in-loop */ | ||
|
|
||
| import { HelixStorage } from './storage.js'; | ||
| import { errorWithResponse } from './util.js'; | ||
|
|
||
| /** | ||
| * @param {UniversalContext} ctx | ||
| * @param {Object} data | ||
| */ | ||
| async function writeLogs(ctx, data) { | ||
| const now = ctx.attributes.start; | ||
| const day = now.getUTCDate(); | ||
| const month = now.getUTCMonth() + 1; | ||
| const year = now.getUTCFullYear(); | ||
| const { logBucket } = HelixStorage.fromContext(ctx); | ||
| // get existing | ||
| let existing = {}; | ||
| const buf = await logBucket.get(`bundler/${year}/${month}/${day}.json`); | ||
| if (buf) { | ||
| existing = JSON.parse(buf.toString()); | ||
| } | ||
|
|
||
| existing.performance = existing.performance || []; | ||
| existing.performance.push(data); | ||
|
|
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| await logBucket.put(`bundler/${year}/${month}/${day}.json`, JSON.stringify(existing), 'application/json'); | ||
| } | ||
|
|
||
| /** | ||
| * @typedef {{ limit: number; }} LoopOpts | ||
| * @type {< | ||
| * TFunc extends (...args: any[]) => boolean|Promise<boolean> | ||
| * >( | ||
| * fn: TFunc, | ||
| * ctx: UniversalContext, | ||
| * opts: LoopOpts | ||
| * ) => (...args: Parameters<TFunc>) => Promise<void>} | ||
| */ | ||
| export const loop = (fn, ctx, opts) => { | ||
| const { limit } = opts; | ||
|
|
||
| return async (...args) => { | ||
| let done = false; | ||
| let before = performance.now(); | ||
|
|
||
| const state = { | ||
| timer: 0, | ||
| /** @type {number[]} */ | ||
| times: [], | ||
| average() { | ||
| return this.timer / this.times.length; | ||
| }, | ||
| /** @param {number} t */ | ||
| push(t) { | ||
| this.times.push(t); | ||
| this.timer += t; | ||
| }, | ||
| }; | ||
|
|
||
| while (!done) { | ||
| done = await fn(...args); | ||
|
|
||
| const marks = performance.getEntriesByType('mark'); | ||
| const starts = marks.filter((m) => m.name.startsWith('start')); | ||
| const measures = starts.reduce((acc, start) => { | ||
| const name = start.name.replace('start:', ''); | ||
| const end = marks.find((m) => m.name === `end:${name}`); | ||
| if (end) { | ||
| acc[name] = end.startTime - start.startTime; | ||
| } | ||
| return acc; | ||
| }, {}); | ||
| ctx.log.info(JSON.stringify({ | ||
| message: 'performance', | ||
| measures, | ||
| stats: ctx.attributes.stats, | ||
| })); | ||
| if ([true, 'true'].includes(ctx.env.WRITE_PERF_LOGS)) { | ||
| await writeLogs(ctx, { measures, stats: ctx.attributes.stats }); | ||
| } | ||
| performance.clearMarks(); | ||
| ctx.attributes.stats = {}; | ||
|
|
||
| const after = performance.now(); | ||
| const dur = after - before; | ||
| before = after; | ||
| state.push(dur); | ||
|
|
||
| if (state.timer + state.average() >= limit) { | ||
| throw errorWithResponse( | ||
| 504, | ||
| `timeout after ${state.times.length} runs (${Math.round(state.timer)} + ${Math.round(state.average())} >= ${limit})`, | ||
| ); | ||
| } | ||
| } | ||
| }; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /* | ||
| * Copyright 2024 Adobe. All rights reserved. | ||
| * This file is licensed to you under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. You may obtain a copy | ||
| * of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software distributed under | ||
| * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS | ||
| * OF ANY KIND, either express or implied. See the License for the specific language | ||
| * governing permissions and limitations under the License. | ||
| */ | ||
|
|
||
| import assert from 'assert'; | ||
| import { DEFAULT_CONTEXT, assertRejectsWithResponse, sleep } from '../util.js'; | ||
| import { loop } from '../../src/support/loop.js'; | ||
|
|
||
| describe('loop()', () => { | ||
| it('passes arguments to function', async () => { | ||
| const fn = (arg1, arg2) => { | ||
| assert.deepStrictEqual(arg1, 'foo'); | ||
| assert.deepStrictEqual(arg2, 'bar'); | ||
| return true; | ||
| }; | ||
| const wrapped = loop(fn, DEFAULT_CONTEXT(), { limit: 100 }); | ||
| await assert.doesNotReject(wrapped('foo', 'bar')); | ||
| }); | ||
|
|
||
| it('throws timeout response if function loop will exceed timeout', async () => { | ||
| let count = 0; | ||
| const fn = async () => { | ||
| await sleep(10); | ||
| count += 1; | ||
| return count > 10; | ||
| }; | ||
| const wrapped = loop(fn, DEFAULT_CONTEXT(), { limit: 50 }); | ||
| await assertRejectsWithResponse(wrapped, 504, /^timeout after/); | ||
| }); | ||
| }); |
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