balena-supervisor/src/utils.coffee

49 lines
1.6 KiB
CoffeeScript

Promise = require 'bluebird'
_ = require 'lodash'
fs = Promise.promisifyAll require 'fs'
config = require './config'
mixpanel = require 'mixpanel'
# Parses package.json and returns resin-supervisor's version
exports.getSupervisorVersion = ->
fs.readFileAsync(__dirname + '/../package.json', 'utf-8')
.then (data) ->
obj = JSON.parse data
return obj.version
mixpanelClient = mixpanel.init(config.mixpanelToken)
exports.mixpanelProperties = mixpanelProperties =
username: require('/boot/config.json').username
exports.mixpanelTrack = (event, properties={}) ->
console.log('Event:', event, JSON.stringify(properties))
# Mutation is bad, and it should feel bad
properties = _.assign(_.cloneDeep(properties), mixpanelProperties)
mixpanelClient.track(event, properties)
# Returns an array of the host's ip address(es) by parsing the host /proc/net/fib_trie
exports.findIpAddrs = ->
fs.readFileAsync('/mnt/fib_trie', 'utf8')
.then (fibtrie) ->
prevLine = ''
fibtrie.split('\n')
.map (line) ->
line = line.trim()
# We only care about LOCAL routes (not UNICAST or BROADCAST)
if line.match(/LOCAL$/)
# Then we make sure the previous line was an ending branch (and hence contains an IP - 127.0.0.0 has BROADCAST and LOCAL entries)
if prevLine.match(/^\|--/)
# Then we remove the ending branch bit
maybeAddr = prevLine.replace(/^\|--/, '').trim()
# And ignore loopback/docker interfaces.
# TODO: Docker interface can technically be on another address range if 172.17
if !maybeAddr.match(/^(127.0.0.1|172.17.)/)
ipAddr = maybeAddr
prevLine = line
return ipAddr
.filter(Boolean)