Client Metalive - exemple

metalive_client.rb

# Prerequires
#
# $ gem install eventmachine em-websocket-client json
# Building native extensions.  This could take a while...
# Successfully installed eventmachine-1.0.3
# Fetching: em-websocket-client-0.1.2.gem (100%)
# Successfully installed em-websocket-client-0.1.2
# Building native extensions.  This could take a while...
# Successfully installed json-1.8.1
# 3 gems installed
#
# Run
#
# $ ruby metalive_client.rb
# {"description"=>{"title"=>"Test"}, "occurred_at"=>"2014-09-11T13:01:04.590205021Z", "uuid"=>"4223e28d-0e4d-4c13-ae34-6c04093dbd4f"}
# {"description"=>{"album"=>"Afro-Colombian Sound Modernizers", "artist"=>"Son Palenque", "group"=>"MUSIC", "title"=>"Cumbia Africana", "year"=>"YYYY"}, "occurred_at"=>"2014-09-11T13:05:06.071020001Z", "uuid"=>"a514fb08-dfdc-4a64-8fdb-bd323c988367"}
# ...

require 'eventmachine'
require 'em-websocket-client'
require 'json'

EM.run do
  conn = EventMachine::WebSocketClient.connect("ws://metalive.tryphon.eu:8080/api/streams/test/events.ws")

  conn.errback do |e|
    puts "Got error: #{e}"
  end

  conn.disconnect do
    puts "gone"
    EM::stop_event_loop
  end

  conn.stream do |msg|
    event = JSON.parse(msg.data)
    puts event.inspect
  end
end

Pour récupérer le "title" de la description :

event["description"]["title"]

Pour l'utiliser dans un test :

if event["description"]["title"] == "start"
  system 'rmlsend PM\ 3\!'
end