gistfile1.rb

class StatsdLoginNotifier
  def initialize(session)
    @session=session
    @statsd = Statsd.new
  end
  
  def authenticate(name, password)
    result = @session.authenticate(name, password)
    @statsd.count result ? 'login.success' : 'login.failure'
    return result
  end
end

class SessionsController < ApplicationController
  def create
    StatsdLoginNotifier.new(Session).authenticate params[:name], params[:password]
  end
end