Module: Tinker::Reactor

Includes:
Evented
Included in:
Application
Defined in:
lib/tinker/reactor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Evented

#dispatch, #every, #on

Instance Attribute Details

#event_queue ⇒ Object (readonly)

Returns the value of attribute event_queue.



4
5
6
 
# File 'lib/tinker/reactor.rb', line 4

def event_queue
  @event_queue
end

#message_queue ⇒ Object (readonly)

Returns the value of attribute message_queue.



4
5
6
 
# File 'lib/tinker/reactor.rb', line 4

def message_queue
  @message_queue
end

Instance Method Details

#clients ⇒ Object 



15
16
17
 
# File 'lib/tinker/reactor.rb', line 15

def clients
  @clients ||= {}
end

#run ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
 
# File 'lib/tinker/reactor.rb', line 19

def run
  return if @event_queue

  trap_sigint

  @event_queue = Queue.new
  @message_queue = Queue.new

  @event_thread = Thread.new do
    Thread.current.abort_on_exception = true
    loop do
      event = @event_queue.pop
      # puts "Processing event: #{event.inspect}"
      event.env.context.dispatch event
    end
  end

  @message_thread = Thread.new do
    Thread.current.abort_on_exception = true
    loop do
      message = @message_queue.pop
      # puts "Sending message: #{message.inspect}"
      message.socket.send(message.body)
    end
  end

  EventMachine.run do
    Backro::Application.instance.send(:initialize)

    puts "Starting EventMachine on port #{self.config.port}"

    @websocket_server = EventMachine::start_server(self.config.host, self.config.port, EventMachine::WebSocket::Connection, {}) do |ws|
      websocket = Tinker::WebSocket.new(ws)

      client = Tinker::Client.new(websocket)
      clients[ws] = client
      port, ip = Socket.unpack_sockaddr_in(ws.get_peername)

      ws.onopen do
        puts "WebSocket Connection open (#{ip}:#{port})"

        env = Tinker::Event::Environment.new(client, Tinker.application)
        @event_queue.push(Tinker::Event.new("meta.client.join", env))
      end

      ws.onmessage do |message|
        begin
          # puts "Incoming message (#{ip}:#{port}): #{message}"
          json = JSON(message)

          env = Tinker::Event::Environment.new(client, (Tinker::Context.contexts[json['context']] || Tinker.application))
          event = Tinker::Event.new("client.message.#{json['action']}", env, json['params'])

          @event_queue.push(event)
        rescue JSON::ParserError
          # puts "Invalid message (#{ip}:#{port})"
          ws.send({:type => :error, :action => :message, :errors => ["Invalid message format"]}.to_json)
        end
      end

      ws.onclose do
        puts "WebSocket Connection closed (#{ip}:#{port})"

        env = Tinker::Event::Environment.new(client, Tinker.application)
        @event_queue.push(Tinker::Event.new("meta.client.leave", env))

        clients.delete ws
      end
    end
  end

  @event_thread.terminate
  @message_thread.terminate

end

#stop ⇒ Object 



10
11
12
13
 
# File 'lib/tinker/reactor.rb', line 10

def stop
  EventMachine.stop_server @websocket_server
  EventMachine.add_periodic_timer(1){ wait_for_connections_and_stop  }
end

#trap_sigint ⇒ Object 



6
7
8
 
# File 'lib/tinker/reactor.rb', line 6

def trap_sigint
  Signal.trap("INT"){ stop }
end