/ var / www / html / events / node_modules / @pm2 / agent / src / [ HOME SHELL ]

Name	Size	Permission
push	[ DIR ]	drwxrwxr-x
reverse	[ DIR ]	drwxrwxr-x
transporters	[ DIR ]	drwxrwxr-x
utils	[ DIR ]	drwxrwxr-x
InteractorClient.js	16.62 KB	-rw-rw-r--
InteractorDaemon.js	13.27 KB	-rw-rw-r--
PM2Client.js	2.98 KB	-rw-rw-r--
PM2Interface.js	4.47 KB	-rw-rw-r--
TransporterInterface.js	4.66 KB	-rw-rw-r--
Utility.js	10.15 KB	-rw-rw-r--
WatchDog.js	1.72 KB	-rw-rw-r--

Code Editor : WatchDog.js

'use strict'

const debug = require('debug')('interactor:watchdog')
const child = require('child_process')
const path = require('path')
const RECONNECT_TENTATIVES_BEFORE_RESURRECT = 6

process.env.PM2_AGENT_ONLINE = true

module.exports = class WatchDog {
  static start (p) {
    this.pm2_binary_path = p.pm2_binary_path
    this.ipm2 = p.conf.ipm2
    this.relaunching = false
    this.autoDumpTime = 5 * 60 * 1000

/**
     * Handle PM2 connection state changes
     */
    this.ipm2.on('ready', _ => {
      debug('Connected to PM2')
      this.relaunching = false
      this.autoDump()
    })

debug('Launching')

this.reconnect_tentatives = 0

this.ipm2.on('reconnecting', _ => {
      debug('PM2 is disconnected - Relaunching PM2')

if (this.dump_interval) {
        clearInterval(this.dump_interval)
      }

if (this.reconnect_tentatives++ >= RECONNECT_TENTATIVES_BEFORE_RESURRECT &&
          this.relaunching === false) {
        this.relaunching = true
        this.resurrect()
      }
    })
  }

static stop() {
    clearInterval(this.dump_interval)
  }

static resurrect () {
    debug(`Trying to launch PM2: ${path.resolve(__dirname, '../../../../bin/pm2')}`)
    child.exec(`node ${this.pm2_binary_path} resurrect`, (err, sto, ste) => {
      if (err) console.error(err)
      console.log(sto, ste)
      this.reconnect_tentatives = 0
      setTimeout(_ => {
        this.relaunching = false
      }, 10 * 1000)
    })
  }

static autoDump () {
    this.dump_interval = setInterval(_ => {
      if (this.relaunching === true) return

this.ipm2.pm2Interface.dump(function (err) {
        return err ? debug('Error when dumping', err) : debug('PM2 process list dumped')
      })
    }, this.autoDumpTime)
  }
}

Urban Research Lab

The Urban Research Lab (URL) at IIIT-Delhi was established in 2020, during a time when the pandemic brought the complexities of urban life more visible than ever. What started as an initiative by faculty and students has grown into a collaborative space for critically exploring and reimagining the urban questions through research, dialogue, and interdisciplinary engagement.

${this.title}

Code Editor : WatchDog.js

Urban Research Lab