87 lines
2.2 KiB
JavaScript
87 lines
2.2 KiB
JavaScript
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'use strict'
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import config from '../scripts/load-config.js'
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import Logger from '../scripts/logger.js'
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import cluster from 'cluster'
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import path from 'path'
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const cpuCount = require('os').cpus().length
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const workers = []
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const logger = new Logger()
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const args = {
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dev: process.env.NODE_ENV !== 'production',
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port: config.server.port
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}
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async function initialize () {
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try {
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const knex = require('knex')(require('../knexfile'))
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console.log('Initializing database...')
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await knex.migrate.latest()
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console.log('Database initialized')
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await knex.destroy()
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} catch (err) {
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console.error('Database error:', err)
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}
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let workerCount = config.server.workers === 0 ? cpuCount : config.server.workers
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console.log('Spinning up ' + workerCount + ' worker process' + (workerCount !== 1 ? 'es' : ''))
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for (let i = 0; i < workerCount; i++) {
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spawnWorker()
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}
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}
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function spawnWorker (oldWorker) {
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const w = cluster.fork()
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w.process.stdout.on('data', (data) => {
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console.log(w.process.pid, data.toString().trim())
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})
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w.process.stderr.on('data', (data) => {
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console.log(w.process.pid, data.toString().trim())
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})
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args.verbose && console.log('Starting worker process ' + w.process.pid + '...')
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w.on('message', (message) => {
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if (message === 'started') {
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workers.push(w)
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args.verbose && console.log('Started worker process ' + w.process.pid)
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if (oldWorker) {
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args.verbose && console.log('Stopping worker process ' + oldWorker.process.pid)
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oldWorker.send('stop')
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}
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} else {
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logger.logProcess(w.process.pid, message)
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}
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})
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args.id = w.process.pid
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w.send(args)
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return w
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}
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console.log('Initializing')
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cluster.setupMaster({
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stdio: ['ignore', 'pipe', 'pipe', 'ipc'],
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exec: path.join(__dirname, './worker.js')
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})
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cluster.on('exit', (worker, code, signal) => {
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let extra = ((code || '') + ' ' + (signal || '')).trim()
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console.error('Worker process ' + worker.process.pid + ' exited ' + (extra ? '(' + extra + ')' : ''))
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let index = workers.indexOf(worker)
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if (index !== -1) workers.splice(index, 1)
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if (code === 0) return
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setTimeout(() => {
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spawnWorker()
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}, 10 * 1000)
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})
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initialize()
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