Class: EventMachine::Breakout::Browser

Inherits:
Connection
  • Object
show all
Defined in:
lib/em-breakout/browser.rb

Instance Attribute Summary collapse

Attributes inherited from Connection

#grid, #grid_name, #is_closing

Instance Method Summary collapse

Methods inherited from Connection

#cid, #close_websocket, #log

Instance Attribute Details

#bid ⇒ Object (readonly)

browser id



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# File 'lib/em-breakout/browser.rb', line 6

def bid
  @bid
end

#message_queue ⇒ Object (readonly)

browser id



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# File 'lib/em-breakout/browser.rb', line 6

def message_queue
  @message_queue
end

#notify ⇒ Object (readonly)

browser id



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# File 'lib/em-breakout/browser.rb', line 6

def notify
  @notify
end

#route ⇒ Object (readonly)

browser id



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# File 'lib/em-breakout/browser.rb', line 6

def route
  @route
end

#wip ⇒ Object

true from when a worker gets sent a message until the worker sends :done_work, false all other times



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# File 'lib/em-breakout/browser.rb', line 5

def wip
  @wip
end

Instance Method Details

#breakout(debug = false) ⇒ Object 



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# File 'lib/em-breakout/browser.rb', line 11

def breakout(debug=false)

  onopen do
    @grid_name = request["path"].split('?').first.gsub('/','')
    @grid = GRIDS[@grid_name]
    @route = request["query"]["route"]
    @bid = request["query"]["bid"]
    @notify = request["query"]["notify"] == "true" ? true : false
    @e = request["query"]["e"].to_i
    @gat = request["query"]["gat"]

    log(%|grid_name: #{@grid_name}\nroute: #{@route}\nbid: #{@bid}\ne: #{@e}\n| +
        %|gat: #{@gat}\nnotify: #{@notify}|) if debug

    catch :break do
      if !@grid
        close_websocket "unknown grid"
        throw :break
      end

      if @grid.browsers.has_key?(@bid) or @grid.disconnected_browsers.has_key?(@bid)
        close_websocket "bid in use"
        throw :break
      end

      if @e < Time.now.to_i
        close_websocket "expired"
        throw :break
      end
      
      unless @gat == ::Breakout.grid_access_token(@route, @bid, @e, @notify, @grid.grid_key)
        close_websocket "invalid url"
        throw :break
      end

      @message_queue = []
      @grid.browsers[@bid] = self
      if @notify
        @message_queue << "/open"
        @grid.work_queue[self] = true
        EventMachine.next_tick { @grid.try_work }
      end
    end
  end

  onmessage do |msg|
    log("msg: #{msg}") if debug

    unless @is_closing

      if @message_queue.empty? && !@wip
        @grid.work_queue[self] = true
        EventMachine.next_tick { @grid.try_work }
      end

      @message_queue << msg
    end
  end 

  onclose do
    log("closing") if debug

    if @message_queue
      @grid.browsers.delete @bid

      if @notify
        @grid.disconnected_browsers[@bid] = self
        @message_queue = ["/close"]
        unless @wip
          @grid.work_queue[self] = true
          EventMachine.next_tick { @grid.try_work }
        end
      else
        @grid.work_queue.delete self
      end
    end
  end

  onerror do |reason|
    log reason.pretty
  end
end