Class: Slanger::Handler

Inherits:
Object
  • Object
show all
Defined in:
lib/slanger/handler.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(socket, handshake) ⇒ Handler

Returns a new instance of Handler.



16
17
18
19
20
21
22
 
# File 'lib/slanger/handler.rb', line 16

def initialize(socket, handshake)
  @socket = socket
  @handshake = handshake
  @connection = Connection.new(@socket)
  @subscriptions = {}
  authenticate
end

Instance Attribute Details

#connection ⇒ Object

Returns the value of attribute connection.



13
14
15
 
# File 'lib/slanger/handler.rb', line 13

def connection
  @connection
end

Instance Method Details

#authenticate ⇒ Object 



54
55
56
57
58
59
60
61
62
63
64
 
# File 'lib/slanger/handler.rb', line 54

def authenticate
  if !valid_app_key? app_key
    error({ code: 4001, message: "Could not find app by key #{app_key}" })
    @socket.close_websocket
  elsif !valid_protocol_version?
    error({ code: 4007, message: "Unsupported protocol version" })
    @socket.close_websocket
  else
    connection.establish
  end
end

#onclose ⇒ Object 



45
46
47
48
49
50
51
52
 
# File 'lib/slanger/handler.rb', line 45

def onclose
  subscriptions = @subscriptions.select { |k, v| k && v }

  subscriptions.each_key do |channel_id|
    subscription_id = subscriptions[channel_id]
    Channel.unsubscribe channel_id, subscription_id
  end
end

#onmessage(msg) ⇒ Object

Dispatches message handling to method with same name as the event name



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/slanger/handler.rb', line 26

def onmessage(msg)
  msg = Oj.strict_load(msg)

  msg["data"] = Oj.strict_load(msg["data"]) if msg["data"].is_a? String

  event = msg["event"].gsub(/\Apusher:/, "pusher_")

  if event =~ /\Aclient-/
    msg["socket_id"] = connection.socket_id
    Channel.send_client_message msg
  elsif respond_to? event, true
    send event, msg
  end
rescue JSON::ParserError
  error({ code: 5001, message: "Invalid JSON" })
rescue Exception => e
  error({ code: 500, message: "#{e.message}\n #{e.backtrace.join "\n"}" })
end

#pusher_ping(msg) ⇒ Object 



70
71
72
 
# File 'lib/slanger/handler.rb', line 70

def pusher_ping(msg)
  send_payload nil, "pusher:pong"
end

#pusher_pong(msg) ⇒ Object 



74
 
# File 'lib/slanger/handler.rb', line 74

def pusher_pong(msg); end

#pusher_subscribe(msg) ⇒ Object 



76
77
78
79
80
81
82
83
84
85
 
# File 'lib/slanger/handler.rb', line 76

def pusher_subscribe(msg)
  channel_id = msg["data"]["channel"]
  klass = subscription_klass channel_id

  if @subscriptions[channel_id]
    error({ code: nil, message: "Existing subscription to #{channel_id}" })
  else
    @subscriptions[channel_id] = klass.new(connection.socket, connection.socket_id, msg).subscribe
  end
end

#pusher_unsubscribe(msg) ⇒ Object 



87
88
89
90
91
92
 
# File 'lib/slanger/handler.rb', line 87

def pusher_unsubscribe(msg)
  channel_id = msg["data"]["channel"]
  subscription_id = @subscriptions.delete(channel_id)

  Channel.unsubscribe channel_id, subscription_id
end

#valid_protocol_version? ⇒ Boolean

Returns:

  • (Boolean) 


66
67
68
 
# File 'lib/slanger/handler.rb', line 66

def valid_protocol_version?
  protocol_version.between?(3, 7)
end