Example code for Go Remote Control talk

caller.coffee

module.exports = (robot) ->
  # Stop a DNSimple name server, run chef-client and start it back up
  robot.respond /deploy nameserver (\w+-\w+-\w+)$/i, (msg) ->
    host = msg.match[1]
    callGoRemoteControl(msg, host, 'update')

go-remote-control.coffee

callGoRemoteControl = (msg, host, action, callback) ->
  baseUrl = "https://#{host}.example.com:9876"
  actionUrl = "#{baseUrl}/#{action}"
  httpAuthToken = "<auth token>"

  msg.http(baseUrl)
    .headers
      'Authorization': httpAuthToken
    .get() (err, res, body) ->
      if err
        msg.send "Failed to connect to node: #{err}"
      else
        msg.send "Executing #{action} on #{host} - this may take some time"
        msg.http(actionUrl)
          .headers
            'Authorization': httpAuthToken
          .get() (err, res, body) ->
            if callback
              callback(host, action, body)
            else
              message = "Result of #{action} on #{host}:\n"
              message += body
              msg.send(message)

update.rb

#!/usr/bin/env ruby

require 'open3'
require_relative 'stop'
require_relative 'start'
require_relative 'status'

def run_chef_client
  puts "Running chef client"
  o, e, s = Open3.capture3("chef-client")
  puts "Chef client exit status: #{s.exitstatus}"
  if s.exitstatus == 0 
    notify("chef client run completed", true) 
  else
    notify("chef client run failed: #{e}", false)
  end
end

def main
  silence
  stop_exabgp
  stop_erldnsimple
  remove_erldnsimple_run_file
  run_chef_client || return

  while !erldnsimple_started?
    sleep 3
  end

  if name_server_answering?
    puts "erldnsimple started"
    start_exabgp || return
    unsilence
  else
    puts "erldnsimple failed to start properly"
  end
end

if __FILE__==$0
  main
end