58 lines
1.9 KiB
JavaScript
58 lines
1.9 KiB
JavaScript
// Copyright (C) 2021 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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const path = require('path');
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const http = require('http');
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const child_process = require('child_process');
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module.exports = async function() {
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// Start the local HTTP server.
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const ROOT_DIR = path.dirname(path.dirname(__dirname));
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const node = path.join(ROOT_DIR, 'ui', 'node');
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const args = [
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path.join(ROOT_DIR, 'ui', 'build.js'),
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'--serve',
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'--no-build',
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'--out=.'
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];
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const spwOpts = {stdio: ['ignore', 'inherit', 'inherit']};
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const srvProc = child_process.spawn(node, args, spwOpts);
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global.__DEV_SERVER__ = srvProc;
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// Wait for the HTTP server to be ready.
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let attempts = 10;
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for (; attempts > 0; attempts--) {
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await new Promise(r => setTimeout(r, 1000));
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try {
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await new Promise((resolve, reject) => {
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const req = http.request('http://127.0.0.1:10000/frontend_bundle.js');
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req.end();
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req.on('error', err => reject(err));
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req.on('finish', () => resolve());
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});
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break;
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} catch (err) {
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console.error('Waiting for HTTP server to come up', err.message);
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continue;
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}
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}
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if (attempts == 0) {
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throw new Error('HTTP server didn\'t come up');
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}
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if (srvProc.exitCode !== null) {
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throw new Error(
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`The dev server unexpectedly exited, code=${srvProc.exitCode}`);
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}
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}
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