Rake task to set up secure logging from from Heroku to Papertrail

heroku.rake

namespace :heroku do


  task :create_logger, [:name, :dst] do |t, args|
    # To use this:
    #
    # 1. Add a new system. Choose "Alternative". Or go to
    #    https://papertrailapp.com/systems/new
    # 2. Choose "I use Heroku"
    # 3. Type the name of the app and click Save. You'll see a path like
    #    host.papertrailapp.com:12345. Make a note of it.
    # 4. Go back into Log Destinations and click Edit Settings.
    #    Under TCP, clear the box for Plain text and check the box for
    #    TLS encryption.
    # 5. Run heroku:create_logger[your_app,host.papertrailapp.com:12345]
    # 6. The script will create a folder for the logging app. Move it out of the way if necessary.
    # 7. Add a log drain using the command it provides.
    #
    require 'securerandom'

    die "name is required" unless args.name
    die "dst is required" unless args.dst

    # FIXME dst should be host.papertrailapp.com:12345

    name = args.name
    app_name = "#{args.name}-logger"
    dst = args.dst
    token = SecureRandom.hex(20)

    raise unless system "heroku create #{app_name} --buildpack https://github.com/kr/heroku-buildpack-go.git"
    raise unless system "heroku config:set -r #{app_name} PORT=443 DEPLOY=#{name} PEMFILE=vendor/papertrail-bundle.pem ENFORCE_SSL=1 FORWARD_DEST=#{dst} TOKEN_MAP=syslog:#{token} --app #{app_name}"
    raise unless system "git clone https://github.com/heroku/log-iss.git #{app_name}"
    Dir.chdir app_name do
      raise unless system "heroku git:remote -a #{app_name}"
      raise unless system "git push heroku master"
    end

    puts
    puts 'Add it to your app:'
    puts
    puts "heroku drains:add https://syslog:#{token}@#{app_name}.herokuapp.com/logs --app YOUR_APP"
    puts

  end


end