FnordMetric data generator

populate.rb

# Copy it to fnordmetric directory and run with
# bundle exec ruby -Ilib populate.rb live

require "securerandom"
require "socket"
require "json"

class User < Struct.new :username, :avatar
  def session_id
    "session_#{username}"
  end
end

users = [
  User.new("Alice", "http://www.avatarsdb.com/avatars/draco_malfoy.jpg"),
  User.new("Jack", "http://www.avatarsdb.com/avatars/draco_malfoy_eyes.gif"),
  User.new("Bob", "http://www.avatarsdb.com/avatars/german_shepherd.jpg"),
  User.new("Tom", "http://www.avatarsdb.com/avatars/funny_elite_machine_gun.gif"),
  User.new("James", "http://www.avatarsdb.com/avatars/ugly_face.gif"),
  User.new("Kate", nil), User.new("Julia", nil) ]

urls = [[0.1, "/family"], [0.3, "/gadgets"], [0.6, "/cars"], [1.0, "/games"]]

@socket = TCPSocket.new 'localhost', 1337

trap "TERM", proc { @socket.close }
trap "INT",  proc { @socket.close }

def send_event event
  @socket.puts event.to_json
end

users.each do |user|
  send_event(_type: :_set_name, name: user.username, _session: user.session_id)
  if user.avatar
    send_event(_type: :_set_picture, url: user.avatar, _session: user.session_id)
  end
end

while true
  user = users.sample
  random_number = rand
  url = "#{urls.detect {|(n, _)| rand <= n }[1]}/#{rand(10)}"

  send_event(_type: :_pageview, url: url, _session: user.session_id)

  sleep rand
end