Any way to run locally without restart swoole server to apply code changes? [SOLVED]

[Arkanius]

Doubt

Hello, I'd like to know if there is a way to use swoole locally and restart swoole server automatically when code changes.

I just installed it in my app and worked well but it's a little boring to need to restart swoole server every time that code changes.

[Arkanius]

I'm currently using Ubuntu here and tried to install fswatch as mentioned in this package but it doesn't worked. Does anyone have any idea?

[mRamadan0101]

till now u must restart swoole server

[Arkanius]

@mRamadan0101 so, we can't use this locally, right?

[paschaldev]

You can setup auto restart, this works for me.

Install these packages

npm i colors chokidar is-running

or 

yarn add colors chokidar is-running

Add this file in your root directory

watcher.js

let fs = require('fs')
let chokidar = require('chokidar')
let colors = require('colors/safe')
let isRunning = require('is-running')

// Define our watching parameters
let basePath = process.cwd()
let pidPath = basePath + '/storage/logs/swoole_http.pid'
let pid = fs.readFileSync(pidPath, 'utf8').split(',')
let ready = false

let logger = (color, message, level = 'log', skipSignal = false) => {
  console[level](colors[color](message))

  if (ready && !skipSignal) {
    sendSignal()
  }
}

let sendSignal = () => {
  pid.forEach((pid) => {
    if (!isRunning(pid)) {
      ready = false
      logger('red', `PID ${pid} is not alive. Close watcher process.`, 'error')
      process.exit()
    }

    process.kill(pid, 'SIGUSR1')
    logger('green', `Reloading process PID ${pid}...`, 'log', true)
  })
}

pid.forEach((pid) => {
  if (!isRunning(pid)) {
    logger('red', `PID ${pid} is not alive.`, 'error')
    return
  } else {
    logger('green', `PID ${pid} is alive, start watching process...`)
  }
})

// Initialize watcher.
// Define your paths here.
let watcher = chokidar.watch([
    basePath + '/app',
    basePath + '/resources',
    basePath + '/routes'
  ], {
  ignored: /(^|[\/\\])\../,
  persistent: true
})

// Add event listeners.
watcher
  .on('add', path => logger('yellow', `File ${path} has been added.`))
  .on('change', path => logger('yellow', `File ${path} has been changed.`))
  .on('unlink', path => logger('yellow', `File ${path} has been removed.`))
  .on('addDir', path => logger('yellow', `Directory ${path} has been added.`))
  .on('unlinkDir', path => logger('yellow', `Directory ${path} has been removed.`))
  .on('error', error => logger('red', `Watcher error: ${error}`))
  .on('ready', () => {
    logger('green', 'Initial scan is finished. Ready for watching changes...')
    ready = true
  })

Add this to your .env file

SWOOLE_HOT_RELOAD_ENABLE = true

After you start your server, run node watcher.js

TIP: Make sure your server has started before running the node script. Don't run the node script first else it won't work because it needs to pick the exact process ID.

[mRamadan0101]

@mRamadan0101 so, we can't use this locally, right?

you need to restart server when you make any change

[Arkanius]

Thanks @paschaldev ! Worked well. I just had to change the SIGUSR1 to SIGKILL (my supervisor is restarting the watcher.js)

[paschaldev]

@Arkanius You're welcome 👍👍