114 lines
3.0 KiB
TypeScript
114 lines
3.0 KiB
TypeScript
import cluster, { type Worker } from 'node:cluster'
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import os from 'node:os'
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import path from 'node:path'
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import { fileURLToPath } from 'node:url'
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import ntfyPublish, { type NtfyMessageOptions } from '@cityssm/ntfy-publish'
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import { secondsToMillis } from '@cityssm/to-millis'
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import Debug from 'debug'
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import exitHook from 'exit-hook'
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import { initializeDatabase } from '../database/initializeDatabase.js'
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import { DEBUG_NAMESPACE } from '../debug.config.js'
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import { getConfigProperty } from '../helpers/config.helpers.js'
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import type { WorkerMessage } from '../types/applicationTypes.js'
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const debug = Debug(`${DEBUG_NAMESPACE}:www:${process.pid}`)
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// INITIALIZE THE DATABASE
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await initializeDatabase()
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const directoryName = path.dirname(fileURLToPath(import.meta.url))
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const processCount = Math.min(
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getConfigProperty('application.maximumProcesses'),
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os.cpus().length
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)
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const applicationName = getConfigProperty('application.applicationName')
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process.title = `${applicationName} (Primary)`
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debug(`Primary pid: ${process.pid}`)
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debug(`Primary title: ${process.title}`)
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debug(`Launching ${processCount} processes`)
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const clusterSettings = {
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exec: `${directoryName}/wwwProcess.js`
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}
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cluster.setupPrimary(clusterSettings)
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const activeWorkers = new Map<number, Worker>()
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for (let index = 0; index < processCount; index += 1) {
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const worker = cluster.fork()
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activeWorkers.set(worker.process.pid ?? 0, worker)
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}
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cluster.on('message', (worker, message: WorkerMessage) => {
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for (const [pid, activeWorker] of activeWorkers.entries()) {
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// eslint-disable-next-line sonarjs/different-types-comparison, @typescript-eslint/no-unnecessary-condition
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if (activeWorker === undefined || pid === message.pid) {
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continue
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}
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debug(`Relaying message to worker: ${pid}`)
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worker.send(message)
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}
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})
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cluster.on('exit', (worker) => {
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debug(`Worker ${(worker.process.pid ?? 0).toString()} has been killed`)
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activeWorkers.delete(worker.process.pid ?? 0)
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debug('Starting another worker')
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cluster.fork()
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})
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const ntfyStartupConfig = getConfigProperty('application.ntfyStartup')
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if (ntfyStartupConfig !== undefined) {
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const topic = ntfyStartupConfig.topic
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const server = ntfyStartupConfig.server
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const ntfyStartupMessage: NtfyMessageOptions = {
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message: 'Application Started',
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tags: ['arrow_up'],
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title: applicationName,
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topic
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}
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const ntfyShutdownMessage: NtfyMessageOptions = {
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message: 'Application Shut Down',
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tags: ['arrow_down'],
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title: applicationName,
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topic
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}
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if (server !== undefined) {
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ntfyStartupMessage.server = server
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ntfyShutdownMessage.server = server
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}
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await ntfyPublish(ntfyStartupMessage)
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exitHook(() => {
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debug('Sending ntfy notification')
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void ntfyPublish(ntfyShutdownMessage)
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})
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}
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if (process.env.STARTUP_TEST === 'true') {
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const killSeconds = 10
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debug(`Killing processes in ${killSeconds} seconds...`)
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setTimeout(() => {
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debug('Killing processes')
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// eslint-disable-next-line unicorn/no-process-exit
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process.exit(0)
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}, secondsToMillis(killSeconds))
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}
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