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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,
validateInputTargetsListFormat,
validateInputTargets
} = require('./lib/data-validator')
const {RequestHandler} = require('./lib/request-handler')
const package_json = require('../package.json')
const DEFAULT_CONFIG_PATH = "/etc/jobd-master.conf"
/**
* @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), {
boolean: ['help', 'version'],
default: {
config: DEFAULT_CONFIG_PATH
}
})
if (argv.help) {
usage()
process.exit(0)
}
if (argv.version) {
console.log(package_json.version)
process.exit(0)
}
// read config
try {
config.parseMasterConfig(argv.config)
} catch (e) {
console.error(`config parsing error: ${e.message}`)
process.exit(1)
}
await loggerModule.init({
file: config.get('log_file'),
levelFile: config.get('log_level_file'),
levelConsole: config.get('log_level_console'),
})
logger = loggerModule.getLogger(appName)
process.title = appName
}
function initServer() {
server = new Server()
server.on('new-connection', (connection) => {
connection.on('request-message', (message, connection) => {
requestHandler.process(message, connection)
})
})
server.start(config.get('port'), config.get('host'))
}
function initWorkers() {
workers = new WorkersList()
}
function initRequestHandler() {
requestHandler = new RequestHandler()
requestHandler.set('poke', onPoke)
requestHandler.set('register-worker', onRegisterWorker)
requestHandler.set('status', onStatus)
requestHandler.set('run-manual', onRunManual)
requestHandler.set('pause', onPause)
requestHandler.set('continue', onContinue)
}
function usage() {
let s = `${process.argv[1]} OPTIONS
Options:
--config <path> Path to config. Default: ${DEFAULT_CONFIG_PATH}
--help Show this help.
--version Print version.`
console.log(s)
}
async function term() {
if (logger)
logger.info('shutdown')
await loggerModule.shutdown()
process.exit()
}
/****************************************/
/** **/
/** Request handlers **/
/** **/
/****************************************/
/**
* @param {object} data
* @param {Connection} connection
*/
async function onRegisterWorker(data, connection) {
const targets = validateInputTargets(data, null)
if (typeof data.name !== 'string')
throw new Error('name is missing or invalid')
workers.add(connection, {
targets,
name: data.name
})
return 'ok'
}
/**
* @param {object} data
*/
async function onPoke(data) {
const targets = validateInputTargets(data, null)
workers.poke(targets)
return 'ok'
}
/**
* @param {object} data
* @return {Promise<*>}
*/
async function onStatus(data) {
const info = await workers.getInfo(data.poll_workers || false)
return {
workers: info,
memoryUsage: process.memoryUsage()
}
}
/**
* @param {object} data
* @return {Promise<*>}
*/
async function onRunManual(data) {
const {jobs} = data
// validate input
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],
])
}
// run jobs, wait for results and send a response
return await workers.runManual(jobs)
}
/**
* @param {object} data
*/
function onPause(data) {
const targets = validateInputTargets(data, null)
workers.pauseTargets(targets)
return 'ok'
}
/**
* @param {object} data
* @param {number} requestNo
* @param {Connection} connection
*/
function onContinue(data, requestNo, connection) {
const targets = validateInputTargets(data, null)
workers.continueTargets(targets)
return 'ok'
}
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