forked from zhurui/management
99 lines
2.0 KiB
JavaScript
99 lines
2.0 KiB
JavaScript
|
'use strict'
|
||
|
|
|
||
|
|
var os = require('os')
|
||
|
|
var util = require('util')
|
||
|
|
var EventEmitter = require('events').EventEmitter
|
||
|
|
var serviceName = require('multicast-dns-service-types')
|
||
|
|
var txt = require('dns-txt')()
|
||
|
|
|
||
|
|
var TLD = '.local'
|
||
|
|
|
||
|
|
module.exports = Service
|
||
|
|
|
||
|
|
util.inherits(Service, EventEmitter)
|
||
|
|
|
||
|
|
function Service (opts) {
|
||
|
|
if (!opts.name) throw new Error('Required name not given')
|
||
|
|
if (!opts.type) throw new Error('Required type not given')
|
||
|
|
if (!opts.port) throw new Error('Required port not given')
|
||
|
|
|
||
|
|
this.name = opts.name
|
||
|
|
this.protocol = opts.protocol || 'tcp'
|
||
|
|
this.type = serviceName.stringify(opts.type, this.protocol)
|
||
|
|
this.host = opts.host || os.hostname()
|
||
|
|
this.port = opts.port
|
||
|
|
this.fqdn = this.name + '.' + this.type + TLD
|
||
|
|
this.subtypes = opts.subtypes || null
|
||
|
|
this.txt = opts.txt || null
|
||
|
|
this.published = false
|
||
|
|
|
||
|
|
this._activated = false // indicates intent - true: starting/started, false: stopping/stopped
|
||
|
|
}
|
||
|
|
|
||
|
|
Service.prototype._records = function () {
|
||
|
|
var records = [rr_ptr(this), rr_srv(this), rr_txt(this)]
|
||
|
|
|
||
|
|
var self = this
|
||
|
|
var interfaces = os.networkInterfaces()
|
||
|
|
Object.keys(interfaces).forEach(function (name) {
|
||
|
|
interfaces[name].forEach(function (addr) {
|
||
|
|
if (addr.internal) return
|
||
|
|
if (addr.family === 'IPv4') {
|
||
|
|
records.push(rr_a(self, addr.address))
|
||
|
|
} else {
|
||
|
|
records.push(rr_aaaa(self, addr.address))
|
||
|
|
}
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
return records
|
||
|
|
}
|
||
|
|
|
||
|
|
function rr_ptr (service) {
|
||
|
|
return {
|
||
|
|
name: service.type + TLD,
|
||
|
|
type: 'PTR',
|
||
|
|
ttl: 28800,
|
||
|
|
data: service.fqdn
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function rr_srv (service) {
|
||
|
|
return {
|
||
|
|
name: service.fqdn,
|
||
|
|
type: 'SRV',
|
||
|
|
ttl: 120,
|
||
|
|
data: {
|
||
|
|
port: service.port,
|
||
|
|
target: service.host
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function rr_txt (service) {
|
||
|
|
return {
|
||
|
|
name: service.fqdn,
|
||
|
|
type: 'TXT',
|
||
|
|
ttl: 4500,
|
||
|
|
data: txt.encode(service.txt)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function rr_a (service, ip) {
|
||
|
|
return {
|
||
|
|
name: service.host,
|
||
|
|
type: 'A',
|
||
|
|
ttl: 120,
|
||
|
|
data: ip
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function rr_aaaa (service, ip) {
|
||
|
|
return {
|
||
|
|
name: service.host,
|
||
|
|
type: 'AAAA',
|
||
|
|
ttl: 120,
|
||
|
|
data: ip
|
||
|
|
}
|
||
|
|
}
|