burnchart/proxy.coffee

59 lines
1.9 KiB
CoffeeScript

#!/usr/bin/env coffee
_ = require 'lodash'
http = require 'http'
fs = require 'fs'
connect = require 'connect'
request = require 'request'
# Read the original config.
config = JSON.parse fs.readFileSync './config.json', 'utf-8'
# Some defaults.
config.host ?= 'api.github.com'
# This is the scrubbed version.
_.extend scrubbed = {}, config, { 'protocol': 'http', 'token': null }
proxy = (req, res, next) ->
end = (code, body) ->
res.writeHead code, {'Content-Type': 'application/json; charset=utf-8'}
res.end body
# Log it.
console.log new Date(), req.url
# Config?
if req.url is '/config.json'
# Refer to us like so.
# Prefer custom header x-forwarded-host if defined.
scrubbed.host = req.headers['x-forwarded-host'] or req.headers.host
return end 200, JSON.stringify scrubbed, null, 4
# GitHub API request?
if req.url.match /^\/repos/
# The default headers.
headers =
# See http://developer.github.com/v3/media/#beta-v3-and-the-future
'Accept': 'application/vnd.github.v3'
# See http://developer.github.com/v3/#user-agent-required
'User-Agent': 'GitHub-Burndown-Chart'
# Add a token?
headers.Authorization = "token #{config.token}" if config.token?
# Make the HTTPS request.
return request {
'uri': "https://#{config.host}#{req.url}"
headers
# Handle the response.
}, (err, _res, body) ->
return end(500) if err
end _res.statusCode, body
# Get handled by Connect.
do next
app = connect()
.use(proxy)
# Serve the public directory with the app, no need to launch another service.
.use(connect.static(__dirname + '/public'))
# Connect on an env port or go random.
.listen process.env.PORT, ->
console.log 'Proxy listening on port', app.address().port