timelimit-server/scripts/util/mainapp.js

51 lines
1.6 KiB
JavaScript

/*
* server component for the TimeLimit App
* Copyright (C) 2019 - 2021 Jonas Lochmann
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
const { spawn } = require('child_process')
const { resolve } = require('path')
function startMainApp(env) {
const initPath = resolve(__dirname, '../../build/index.js')
return new Promise((resolve, reject) => {
const task = spawn('node', [initPath], {
stdio: ['inherit', 'pipe', 'inherit'],
env: { ...process.env, PORT: 0 /* random port */, ...env }
})
task.on('exit', () => reject(new Error('task terminated too early')))
task.on('error', (ex) => reject(ex))
task.stdout.on('data', (data) => {
if (data.toString('utf8').split('\n').indexOf('ready') !== -1) resolve(task)
process.stdout.write(data)
})
setTimeout(() => {
reject(new Error('timeout'))
task.kill('SIGINT')
}, 1000 * 30)
}).then((task) => {
return {
shutdown: () => task.kill('SIGINT')
}
})
}
module.exports = { startMainApp }