"use strict"; var nconf = require('nconf'), fs = require('fs'), pidFilePath = __dirname + '/pidfile', output = fs.openSync(__dirname + '/logs/output.log', 'a'), start = function() { var nbb_start = function(callback) { if (timesStarted > 3) { console.log('\n[loader] Experienced three start attempts in 10 seconds, most likely an error on startup. Halting.'); return nbb_stop(); } timesStarted++; if (startTimer) { clearTimeout(startTimer); } startTimer = setTimeout(resetTimer, 1000*10); if (nbb) { nbbOld = nbb; } nbb = require('child_process').fork('./app', process.argv.slice(2), { env: process.env }); nbb.on('message', function(message) { if (message && typeof message === 'object' && message.action) { switch (message.action) { case 'ready': if (!callback) return nbb.kill('SIGCONT'); callback(); break; case 'restart': nbb_restart(); break; } } }); nbb.on('exit', function(code, signal) { if (code) { nbb_start(); } else { nbb_stop(); } }); }, nbb_stop = function() { if (startTimer) { clearTimeout(startTimer); } nbb.kill(); if (fs.existsSync(pidFilePath)) { var pid = parseInt(fs.readFileSync(pidFilePath, { encoding: 'utf-8' }), 10); if (process.pid === pid) { fs.unlinkSync(pidFilePath); } } }, nbb_restart = function() { nbb_start(function() { nbbOld.removeAllListeners('exit').on('exit', function() { nbb.kill('SIGCONT'); }); nbbOld.kill(); }); }, resetTimer = function() { clearTimeout(startTimer); timesStarted = 0; }, timesStarted = 0, startTimer; process.on('SIGINT', nbb_stop); process.on('SIGTERM', nbb_stop); process.on('SIGHUP', nbb_restart); nbb_start(); }, nbb, nbbOld; nconf.argv(); // Start the daemon! if (nconf.get('daemon') !== false) { // Check for a still-active NodeBB process if (fs.existsSync(pidFilePath)) { try { var pid = fs.readFileSync(pidFilePath, { encoding: 'utf-8' }); process.kill(pid, 0); process.exit(); } catch (e) { fs.unlinkSync(pidFilePath); } } // Daemonize and record new pid require('daemon')({ stdout: output }); fs.writeFile(__dirname + '/pidfile', process.pid); start(); } else { start(); }