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|
#!/usr/bin/env node
const minimist = require('minimist')
const loggerModule = require('./logger')
const config = require('./config')
const {Server, ResponseMessage, RequestMessage} = require('./server')
const WorkersList = require('./workers-list')
/**
* @type {Logger}
*/
let logger
/**
* @type {Server}
*/
let server
/**
* @type WorkersList
*/
let workers
main().catch(e => {
console.error(e)
process.exit(1)
})
async function main() {
if (process.argv.length < 3) {
usage()
process.exit(0)
}
process.on('SIGINT', term)
process.on('SIGTERM', term)
const argv = minimist(process.argv.slice(2))
if (argv.help) {
usage()
process.exit(0)
}
if (!argv.config)
throw new Error('--config option is required')
// read config
try {
config.parseMasterConfig(argv.config)
} catch (e) {
console.error(`config parsing error: ${e.message}`)
process.exit(1)
}
await loggerModule.init({
file: config.get('log_file'),
levelFile: config.get('log_level_file'),
levelConsole: config.get('log_level_console'),
})
logger = loggerModule.getLogger('jobd-master')
workers = new WorkersList()
// start server
server = new Server()
server.on('message', onMessage)
server.start(config.get('port'), config.get('host'))
logger.info('server started')
}
/**
* @param {RequestMessage|ResponseMessage} message
* @param {Connection} connection
* @return {Promise<*>}
*/
async function onMessage({message, connection}) {
try {
if (!(message instanceof RequestMessage)) {
logger.debug('ignoring message', message)
return
}
if (message.requestType !== 'ping')
logger.info('onMessage:', message)
if (config.get('password') && message.password !== config.get('password')) {
connection.send(new ResponseMessage().setError('invalid password'))
return connection.close()
}
switch (message.requestType) {
case 'ping':
connection.send(new ResponseMessage().setError('pong'))
break
case 'register-worker': {
const targets = message.requestData?.targets || []
if (!targets.length) {
connection.send(new ResponseMessage().setError(`targets are empty`))
break
}
workers.add(connection, targets)
connection.send(new ResponseMessage().setData('ok'))
break
}
case 'poke': {
const targets = message.requestData?.targets || []
if (!targets.length) {
connection.send(new ResponseMessage().setError(`targets are empty`))
break
}
workers.poke(targets)
connection.send(new ResponseMessage().setData('ok'))
break
}
case 'status':
const info = workers.getInfo()
connection.send(new ResponseMessage().setData({
workers: info,
memoryUsage: process.memoryUsage()
}))
break
default:
connection.send(new ResponseMessage().setError(`unknown request type: '${message.requestType}'`))
break
}
} catch (error) {
logger.error(`error while handling message:`, message, error)
connection.send(new ResponseMessage().setError('server error: ' + error?.message))
}
}
function usage() {
let s = `${process.argv[1]} OPTIONS
Options:
--config <path>
--help`
console.log(s)
}
function term() {
if (logger)
logger.info('shutdown')
loggerModule.shutdown(function() {
process.exit()
})
}
|
