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#!/usr/bin/env node
const minimist = require('minimist')
const loggerModule = require('./lib/logger')
const config = require('./lib/config')
const {Server, ResponseMessage} = require('./lib/server')
const WorkersList = require('./lib/workers-list')
const {validateObjectSchema, validateTargetsList} = require('./lib/data-validator')
const RequestHandler = require('./lib/request-handler')
const package_json = require('../package.json')
/**
* @type {Logger}
*/
let logger
/**
* @type {Server}
*/
let server
/**
* @type WorkersList
*/
let workers
/**
* @type {RequestHandler}
*/
let requestHandler
main().catch(e => {
console.error(e)
process.exit(1)
})
async function main() {
await initApp('jobd-master')
initWorkers()
initRequestHandler()
initServer()
}
async function initApp(appName) {
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.version) {
console.log(package_json.version)
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(appName)
process.title = appName
}
function initServer() {
server = new Server()
server.on('new-connection', (connection) => {
connection.on('request-message', (message, connection) => {
requestHandler.process(message, connection)
})
})
server.start(config.get('port'), config.get('host'))
}
function initWorkers() {
workers = new WorkersList()
}
function initRequestHandler() {
requestHandler = new RequestHandler()
requestHandler.set('poke', onPoke)
requestHandler.set('register-worker', onRegisterWorker)
requestHandler.set('status', onStatus)
requestHandler.set('run-manual', onRunManual)
}
/**
* @param {object} data
* @param {number} requestNo
* @param {Connection} connection
*/
function onRegisterWorker(data, requestNo, connection) {
const targets = data.targets || []
// validate data
try {
validateTargetsList(targets)
} catch (e) {
connection.send(
new ResponseMessage(requestNo)
.setError(e.message)
)
return
}
// register worker and reply with OK
workers.add(connection, targets)
connection.send(
new ResponseMessage(requestNo)
.setData('ok')
)
}
/**
* @param {object} data
* @param {number} requestNo
* @param {Connection} connection
*/
function onPoke(data, requestNo, connection) {
const targets = data.targets || []
// validate data
try {
validateTargetsList(targets)
} catch (e) {
connection.send(
new ResponseMessage(requestNo)
.setError(e.message)
)
return
}
// poke workers
workers.poke(targets)
// reply to user
connection.send(
new ResponseMessage(requestNo)
.setData('ok')
)
}
/**
* @param {object} data
* @param {number} requestNo
* @param {Connection} connection
* @return {Promise<*>}
*/
async function onStatus(data, requestNo, connection) {
const info = await workers.getInfo(data.poll_workers || false)
let status = {
workers: info,
memoryUsage: process.memoryUsage()
}
connection.send(
new ResponseMessage(requestNo)
.setData(status)
)
}
/**
* @param {object} data
* @param {number} requestNo
* @param {Connection} connection
* @return {Promise<*>}
*/
async function onRunManual(data, requestNo, connection) {
const {jobs} = data
// validate data
try {
if (!Array.isArray(jobs))
throw new Error('jobs must be array')
for (let job of jobs) {
validateObjectSchema(job, [
// name // type // required
['id', 'i', true],
['target', 's', true],
])
}
} catch (e) {
connection.send(
new ResponseMessage(requestNo)
.setError(e.message)
)
return
}
// run jobs on workers
const jobsData = await workers.runManual(jobs)
// send result to the client
connection.send(
new ResponseMessage(requestNo)
.setData(jobsData)
)
}
function usage() {
let s = `${process.argv[1]} OPTIONS
Options:
--config <path>
--help
--version`
console.log(s)
}
function term() {
if (logger)
logger.info('shutdown')
loggerModule.shutdown(function() {
process.exit()
})
}
|
