110 lines
2.6 KiB
JavaScript
110 lines
2.6 KiB
JavaScript
import fs from 'fs/promises';
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import { fileURLToPath } from 'url';
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import autocannon from 'autocannon';
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import { execaCommand } from 'execa';
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import { waitUntilBusy } from 'port-authority';
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import { markdownTable } from 'markdown-table';
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import pb from 'pretty-bytes';
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import { astroBin } from './_util.js';
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const port = 4321;
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export const defaultProject = 'server-stress-default';
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/**
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* @param {URL} projectDir
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* @param {URL} outputFile
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*/
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export async function run(projectDir, outputFile) {
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const root = fileURLToPath(projectDir);
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console.log('Building...');
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await execaCommand(`${astroBin} build`, {
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cwd: root,
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stdio: 'inherit',
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});
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console.log('Previewing...');
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const previewProcess = execaCommand(`${astroBin} preview --port ${port}`, {
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cwd: root,
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stdio: 'inherit',
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});
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console.log('Waiting for server ready...');
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await waitUntilBusy(port, { timeout: 5000 });
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console.log('Running benchmark...');
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const result = await benchmarkCannon();
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console.log('Killing server...');
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if (!previewProcess.kill('SIGTERM')) {
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console.warn('Failed to kill server process id:', previewProcess.pid);
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}
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console.log('Writing results to', fileURLToPath(outputFile));
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await fs.writeFile(outputFile, JSON.stringify(result, null, 2));
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console.log('Result preview:');
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console.log('='.repeat(10));
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console.log(`#### Server stress\n\n`);
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console.log(printResult(result));
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console.log('='.repeat(10));
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console.log('Done!');
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}
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/**
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* @returns {Promise<import('autocannon').Result>}
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*/
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async function benchmarkCannon() {
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return new Promise((resolve, reject) => {
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const instance = autocannon(
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{
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url: `http://localhost:${port}`,
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connections: 100,
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duration: 30,
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pipelining: 10,
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},
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(err, result) => {
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if (err) {
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reject(err);
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} else {
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// @ts-expect-error untyped but documented
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instance.stop();
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resolve(result);
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}
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}
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);
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autocannon.track(instance, { renderResultsTable: false });
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});
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}
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/**
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* @param {import('autocannon').Result} output
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*/
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function printResult(output) {
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const { latency: l, requests: r, throughput: t } = output;
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const latencyTable = markdownTable(
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[
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['', 'Avg', 'Stdev', 'Max'],
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['Latency', `${l.average} ms`, `${l.stddev} ms`, `${l.max} ms`],
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],
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{
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align: ['l', 'r', 'r', 'r'],
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}
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);
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const reqAndBytesTable = markdownTable(
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[
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['', 'Avg', 'Stdev', 'Min', 'Total in 30s'],
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['Req/Sec', r.average, r.stddev, r.min, `${(r.total / 1000).toFixed(1)}k requests`],
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['Bytes/Sec', pb(t.average), pb(t.stddev), pb(t.min), `${pb(t.total)} read`],
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],
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{
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align: ['l', 'r', 'r', 'r', 'r'],
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}
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);
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return `${latencyTable}\n\n${reqAndBytesTable}`;
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}
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