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faker.coffee

Faker

Faker is a library for sending fake data to a swarm

 
http = require 'http'
express = require 'express'
app = express.createServer()
config = JSON.parse require('fs').readFileSync './config.json', 'utf8'

Constants

center latitude and longitude, max distance, and max mpg

 
buglabs = { latitude: 40.72498216901785, longitude: -73.99708271026611 }
max_distance = .25
center_latitude = (buglabs.latitude - max_distance / 2)
center_longitude = (buglabs.longitude - max_distance / 2)
max_mpg = 70

Routing / API

To start faking data to a random swarm listed in config.json, GET /add

 
app.get '/add', (req, res) ->
  fakeData()

To start faking data to a specific swarm, GET /add/:swarm_id

 
app.get '/add/:swarm_id', (req, res) ->
  fakeData req.params.swarm_id

Helpers

fakeData pushes fake data to a swarm

Currently, it looks like

PUT /resources/:producer_name/feeds/mpg?swarm_id=:swarm_id

{ latitude: -25.1, longitude: 40.1, mpg: 42 }

If you want to push other data, make sure the feed name and data field is the same, eg:

PUT /resources/:producer_name/feeds/RPM?swarm_id=:swarm_id

{ latitude: -25.1, longitude: 40.1, RPM: 2600 }

 
fakeData = (swarm) ->
  if swarm? and config.swarms.indexOf(swarm) > -1
    swarm_id = swarm
  else
    swarm_id = config.swarms[Math.floor(Math.random() * config.swarms.length)]

  options =
    host: config.host
    port: 80
    path: "/resources/#{config.producer_name}/feeds/mpg?swarm_id=#{swarm_id}"
    method: 'PUT'
    headers: { 'X-BugSwarmApiKey': config.producer_key }

  req = http.request options, (res) ->
    setInterval ->
      feed =
        latitude: center_latitude + Math.random() * max_distance
        longitude: center_longitude + Math.random() * max_distance
        mpg: Math.floor(Math.random() * max_mpg)
      req.write JSON.stringify feed
    , 5000
  req.write '\n'

fakeData()
app.listen 33