Class: Baykit::BayServer::Docker::Terminal::TerminalTrain

Inherits:
Train::Train
  • Object
show all
Includes:
Agent, Agent::Multiplexer, Rudders, Tours, Tours::ReqContentHandler, Train, Util
Defined in:
lib/baykit/bayserver/docker/terminal/terminal_train.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(terminal_docker, tur, app, env) ⇒ TerminalTrain

Returns a new instance of TerminalTrain.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 40

def initialize(terminal_docker, tur, app, env)
  BayLog.debug "%s New Rack Train", tur
  @terminal_docker = terminal_docker
  @tour = tur
  @tour_id = tur.tour_id
  @app = app
  @env = env
  @available = false
  @tmpfile = nil
  @req_cont = nil

  @lock = Mutex.new
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 32

def app
  @app
end

#env ⇒ Object (readonly)

Returns the value of attribute env.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 33

def env
  @env
end

#lock ⇒ Object (readonly)

Returns the value of attribute lock.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 36

def lock
  @lock
end

#req_available ⇒ Object (readonly)

Returns the value of attribute req_available.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 35

def req_available
  @req_available
end

#req_cont ⇒ Object (readonly)

Returns the value of attribute req_cont.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 38

def req_cont
  @req_cont
end

#terminal_docker ⇒ Object (readonly)

Returns the value of attribute terminal_docker.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 29

def terminal_docker
  @terminal_docker
end

#tmpfile ⇒ Object (readonly)

Returns the value of attribute tmpfile.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 37

def tmpfile
  @tmpfile
end

#tour ⇒ Object (readonly)

Returns the value of attribute tour.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 30

def tour
  @tour
end

#tour_id ⇒ Object (readonly)

Returns the value of attribute tour_id.



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 31

def tour_id
  @tour_id
end

Instance Method Details

#depart ⇒ Object 



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 75

def depart

  begin
    if @tour.req.method.casecmp?("post")
      BayLog.debug("%s Terminal: posted: content-length: %s", @tour, @env["CONTENT_LENGTH"])
    end


    if BayServer.harbor.trace_header
      @env.keys.each do |key|
        value = @env[key]
        BayLog.info("%s Terminal: env:%s=%s", @tour, key, value)
      end
    end

    status, headers, body = @app.call(@env)

    # Hijack check
    pip = @env[TerminalDocker::RACK_TERMINAL_PIPE]

    if pip != nil
      # Fully hijacked (Do nothing)
      BayLog.debug("%s Tour is fully hijacked", @tour)

    else
      @tour.res.headers.status = status

      hijack = nil
      headers.each do | key, value |
        if key == Rack::RACK_HIJACK
          hijack = value
        else
          @tour.res.headers.add key, value
        end
      end

      # Send headers
      @tour.res.send_headers @tour_id

      if hijack != nil
        # Partially hijacked
        BayLog.debug("%s Tour is partially hijacked", @tour)
        agt = GrandAgent.get(@tour.ship.agent_id)
        mpx = agt.net_multiplexer
        pip = IO.pipe
        rd_read = IORudder.new(pip[0])
        sip = HijackersShip.new()
        bufsize = @tour.ship.protocol_handler.max_res_packet_data_size()
        tp = PlainTransporter.new(mpx, sip, false, bufsize, false)

        sip.init(@tour, rd_read, tp)
        sid = sip.ship_id

        @tour.res.set_consume_listener do |len, resume|
          if resume
            sip.resume_read(sid)
          end
        end

        mpx.add_rudder_state(rd_read, RudderState.new(rd_read, tp))
        mpx.req_read(rd_read)

        hijack.call pip[1]

      else
        # Not hijacked

        # Setup consume listener
        @tour.res.set_consume_listener() do |len, resume|
          if(resume)
            @available = true
          end
        end

        # Send contents
        body.each do | str |
          bstr = StringUtil.to_bytes(str)
          BayLog.trace("%s TerminalTask: read body: len=%d", @tour, bstr.length)
          @available = @tour.res.send_res_content(@tour_id, bstr, 0, bstr.length)
          while !@available
            sleep 0.1
          end
        end

        @tour.res.end_res_content(@tour_id)

      end
    end
  rescue HttpException => e
    raise e
  rescue => e
    BayLog.error_e e
    raise HttpException.new HttpStatus::INTERNAL_SERVER_ERROR, "Terminal error"
  ensure
    if @tmpfile
      @tmpfile.close()
    end
  end
end

#inspect ⇒ Object 



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 221

def inspect
  "TerminalTask #{@tour}"
end

#on_abort_req(tur) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 208

def on_abort_req(tur)
  BayLog.trace("%s TerminalTask:abort", @tour)
  if @tmpfile
    @tmpfile.close()
    @tmpfile = nil
  end
  return false
end

#on_end_req_content(tur) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 190

def on_end_req_content(tur)
  BayLog.trace("%s TerminalTask:endContent", @tour)

  if @req_cont != nil
    # Cache content in memory
    rack_input = StringIO.new(@req_cont)
  else
    # Content save on disk
    @tmpfile.rewind()
    rack_input = @tmpfile
  end
  env[Rack::RACK_INPUT] = rack_input

  if !TrainRunner.post(tur.ship.agent_id, self)
    raise HttpException.new(HttpStatus::SERVICE_UNAVAILABLE, "TrainRunner is busy")
  end
end

#on_read_req_content(tur, buf, start, len, &lis) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 175

def on_read_req_content(tur, buf, start, len, &lis)
  BayLog.trace("%s TerminalTask:onReadContent: len=%d", @tour, len)

  if @req_cont != nil
    # Cache content in memory
    @req_cont << buf[start, len]
  else
    # Content save on disk
    @tmpfile.write(buf[start, len])
  end

  tur.req.consumed(Tour::TOUR_ID_NOCHECK, len, &lis)
  true
end

#on_timer ⇒ Object 



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 217

def on_timer
  BayLog.debug("%s TerminalTask:timer", @tour)
end

#start_tour ⇒ Object 



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# File 'lib/baykit/bayserver/docker/terminal/terminal_train.rb', line 54

def start_tour()
  @tour.req.set_content_handler(self)
  @tmpfile = nil

  if @env["CONTENT_LENGTH"]
    req_cont_len = @env["CONTENT_LENGTH"].to_i
  else
    req_cont_len = 0
  end

  if req_cont_len <= @terminal_docker.post_cache_threshold
    # Cache content in memory
    @req_cont = StringUtil.alloc(0)
  else
    # Content save on disk
    @tmpfile = Tempfile.new("terminal_upload")
    @tmpfile.binmode
  end

end