Class: Gaku::RealtimeController

Inherits:
ApplicationController
  • Object
show all
Includes:
ActionController::Live
Defined in:
app/controllers/gaku/realtime_controller.rb

Instance Method Summary collapse

Instance Method Details

#exam_portion_scores ⇒ Object

change SSE.new with rails SSE object when is released github.com/rails/rails/blob/master/actionpack/lib/action_controller/metal/live.rb



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# File 'app/controllers/gaku/realtime_controller.rb', line 8

def exam_portion_scores
  response.headers['Content-Type'] = 'text/event-stream'
  conn = ActiveRecord::Base.connection
  sse = Streamer::SSE.new(response.stream)
  begin
    loop do
      conn.execute 'LISTEN update_exam_portion_score'
      conn.raw_connection.wait_for_notify do |_event, _pid, score|
        sse.write(score, event: 'update.examPortionScore')
      end
    end
  rescue IOError
    sse.close
    conn.execute 'UNLISTEN update_exam_portion_score'
  ensure
    sse.close
    conn.execute 'UNLISTEN update_exam_portion_score'
  end
end