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server.ts
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server.ts
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import Command from '../command'
import { flags } from '@oclif/command'
import chalk from 'chalk'
import NimbuServer from '../nimbu-gem/server'
import WebpackDevServer from '../webpack/server'
export default class Server extends Command {
static description = 'run the development server'
static flags = {
nocookies: flags.boolean({
description: 'Leave cookies untouched i.s.o. clearing them.',
}),
port: flags.integer({
description: 'The port to listen on.',
env: 'DEFAULT_PORT',
default: 4567,
}),
host: flags.string({
description: 'The hostname/ip-address to bind on.',
env: 'HOST',
default: '0.0.0.0',
}),
'nimbu-port': flags.integer({
description: 'The port for the ruby nimbu server to listen on.',
env: 'NIMBU_PORT',
default: 4568,
}),
compass: flags.boolean({
description: 'Use legacy ruby SASS compilation.',
}),
nowebpack: flags.boolean({
description: 'Do not use webpack.',
}),
noopen: flags.boolean({
description: `Don't open/reload browser`,
default: false,
}),
}
private _nimbuServer?: NimbuServer
private readonly webpackServer: WebpackDevServer = new WebpackDevServer()
private get nimbuServer() {
if (this._nimbuServer === undefined) {
throw new Error('Command not initialized yet')
}
return this._nimbuServer
}
async spawnNimbuServer(port: number, nocookies: boolean, compass: boolean) {
this.log(chalk.red('Starting nimbu server...'))
await this.nimbuServer.start(port, { nocookies, compass })
}
async stopNimbuServer() {
this.log(chalk.red('Giving nimbu server some time to stop...'))
await this.nimbuServer.stop()
}
async startWebpackDevServer(host: string, defaultPort: number, nimbuPort: number, open: boolean) {
this.log(chalk.cyan('Starting the development server...\n'))
await this.webpackServer.start(host, defaultPort, nimbuPort, 'http', open)
}
async stopWebpackDevServer() {
await this.webpackServer.stop()
}
get initialized() {
return super.initialized && this._nimbuServer !== undefined
}
async initialize() {
if (!this.initialized) {
await super.initialize()
this._nimbuServer = new NimbuServer(this.nimbu, this.log, this.warn)
}
}
async execute() {
const { flags } = this.parse(Server)
await this.spawnNimbuServer(flags.nowebpack ? flags.port! : flags['nimbu-port']!, flags.nocookies, flags.compass)
if (!flags.nowebpack) {
await this.startWebpackDevServer(flags.host!, flags.port!, flags['nimbu-port']!, !flags.noopen)
}
await this.waitForStopSignals()
// Explicitly exit the process to make sure all subprocesses started by webpack plugins are gone
process.exit(0)
}
async catch() {
if (this.webpackServer.isRunning()) {
await this.stopWebpackDevServer()
}
if (this.nimbuServer.isRunning()) {
await this.stopNimbuServer()
}
}
private waitForStopSignals(): Promise<void> {
return new Promise<void>((resolve, _reject) => {
;(['SIGINT', 'SIGTERM'] as Array<NodeJS.Signals>).forEach((sig) => {
process.on(sig, async () => {
this.log(chalk.cyan('Shutting down ...'))
await this.stopWebpackDevServer()
await this.stopNimbuServer()
resolve()
})
})
})
}
}