blob: e4cd7e8881e05868b23e10eef9ddbe0e8b08d5bc [file] [log] [blame]
// Copyright (C) 2021 The Android Open Source Project
//
// Licensed 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 CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
const path = require('path');
const http = require('http');
const child_process = require('child_process');
module.exports = async function() {
// Start the local HTTP server.
const ROOT_DIR = path.dirname(path.dirname(__dirname));
const node = path.join(ROOT_DIR, 'ui', 'node');
const args = [
path.join(ROOT_DIR, 'ui', 'build.js'),
'--serve',
'--no-build',
'--out=.'
];
const spwOpts = {stdio: ['ignore', 'inherit', 'inherit']};
const srvProc = child_process.spawn(node, args, spwOpts);
global.__DEV_SERVER__ = srvProc;
// Wait for the HTTP server to be ready.
let attempts = 10;
for (; attempts > 0; attempts--) {
await new Promise(r => setTimeout(r, 1000));
try {
await new Promise((resolve, reject) => {
const req = http.request('http://127.0.0.1:10000/frontend_bundle.js');
req.end();
req.on('error', err => reject(err));
req.on('finish', () => resolve());
});
break;
} catch (err) {
console.error('Waiting for HTTP server to come up', err.message);
continue;
}
}
if (attempts == 0) {
throw new Error('HTTP server didn\'t come up');
}
if (srvProc.exitCode !== null) {
throw new Error(
`The dev server unexpectedly exited, code=${srvProc.exitCode}`);
}
}