Class: Baykit::BayServer::Docker::SendFile::FileContentHandler

Inherits:
Object
  • Object
show all
Includes:
Agent, Agent::Multiplexer, Common, Rudders, Tours, Tours::ReqContentHandler, Util
Defined in:
lib/baykit/bayserver/docker/send_file/file_content_handler.rb

Constant Summary

Constants included from Tours::ReqContentHandler

Tours::ReqContentHandler::DEV_NULL

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tur, store, path, charset) ⇒ FileContentHandler

Returns a new instance of FileContentHandler.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 31

def initialize(tur, store, path, charset)
  @tour = tur
  @store = store
  @path = path
  @charset = charset
  @abortable = true
  @lock = Mutex.new

  rname = File.basename(path)
  pos = rname.rindex('.')
  if pos
    ext = rname[pos + 1 .. -1].downcase
    @mime_type = Mimes.type(ext)
  end

  if @mime_type == nil
    @mime_type = "application/octet-stream"
  end

  if @mime_type.start_with?("text/") && charset != nil
    @mime_type = @mime_type + "; charset=" + charset
  end
end

Instance Attribute Details

#abortable ⇒ Object (readonly)

Returns the value of attribute abortable.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 26

def abortable
  @abortable
end

#charset ⇒ Object (readonly)

Returns the value of attribute charset.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 24

def charset
  @charset
end

#file_content ⇒ Object (readonly)

Returns the value of attribute file_content.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 28

def file_content
  @file_content
end

#lock ⇒ Object (readonly)

Returns the value of attribute lock.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 29

def lock
  @lock
end

#mime_type ⇒ Object (readonly)

Returns the value of attribute mime_type.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 25

def mime_type
  @mime_type
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 23

def path
  @path
end

#store ⇒ Object (readonly)

Returns the value of attribute store.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 27

def store
  @store
end

#tour ⇒ Object (readonly)

Returns the value of attribute tour.



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 22

def tour
  @tour
end

Instance Method Details

#on_abort_req(tur) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 70

def on_abort_req(tur)
  BayLog.debug("%s onAbortReq aborted=%s", tur, abortable)
  return abortable
end

#on_end_req_content(tur) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 64

def on_end_req_content(tur)
  BayLog.debug("%s endReqContent", tur)
  req_start_tour()
  @abortable = false
end

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

Implements ReqContentHandler



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 59

def on_read_req_content(tur, buf, start, len, &lis)
  BayLog.debug("%s onReadReqContent(Ignore) len=%d", tur, len)
  tur.req.consumed(tur.tour_id, len, &lis)
end

#req_start_tour ⇒ Object

Sending file methods



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 79

def req_start_tour

  @lock.synchronize do
    if @store == nil
      status = FileStore::FileContentStatus.new(nil, FileStore::FileContentStatus::EXCEEDED)
    else
      status = @store.get(path)
    end
    @file_content = status.file_content

    BayLog.debug("%s file content status: %d", @tour, status.status)
    case status.status
    when FileStore::FileContentStatus::STARTED, FileStore::FileContentStatus::EXCEEDED
      send_file_async

    when FileStore::FileContentStatus::READING
      # Wait file loaded
      BayLog.debug("%s Cannot start tour (file reading)", @tour)

      agt = GrandAgent.get(@tour.ship.agent_id)
      wait_file_ship = WaitFileShip.new()
      tp = PlainTransporter.new(
        agt.spider_multiplexer,
        wait_file_ship,
        true,
        8192,
        false)

      begin
        pipe = IO::pipe
        source_rd = IORudder.new(pipe[0])
        source_rd.set_non_blocking()
        wait_rd = IORudder.new(pipe[1])
      rescue IOError => e
        raise Sink.new("Fatal error: %s", e)
      end

      wait_file_ship.init(source_rd, tp, @tour, @file_content, self)
      @tour.res.set_consume_listener(&ContentConsumeListener::DEV_NULL)

      st = RudderStateStore.get_store(agt.agent_id).rent()
      st.init(source_rd, tp)
      agt.spider_multiplexer.add_rudder_state(source_rd, st)
      agt.spider_multiplexer.req_read(source_rd)

      @file_content.add_waiter(wait_rd)

      when FileStore::FileContentStatus::COMPLETED
        send_file_from_cache

    else
      raise Sink.new("Unknown file content status: %d", status.status)
    end
  end
end

#send_file_async ⇒ Object 



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 135

def send_file_async()

  if File.directory?(@path)
    raise HttpException.new(HttpStatus::FORBIDDEN, @path)
  elsif !File.exist?(@path)
    raise HttpException.new(HttpStatus::NOT_FOUND, @path)
  end

  file_len = ::File.size(@path)

  @tour.res.headers.set_content_type(@mime_type)
  @tour.res.headers.set_content_length(File.size(@path))

  begin
    @tour.res.send_headers(Tour::TOUR_ID_NOCHECK)

    bufsize = @tour.ship.protocol_handler.max_res_packet_data_size
    agt = GrandAgent.get(@tour.ship.agent_id)

    f = File.open(@path, "rb")
    rd = IORudder.new(f)

    case(BayServer.harbor.file_multiplexer)

    when Harbor::MULTIPLEXER_TYPE_SPIDER
      mpx = agt.spider_multiplexer

    when Harbor::MULTIPLEXER_TYPE_JOB
      mpx = agt.job_multiplexer

    when Harbor::MULTIPLEXER_TYPE_SPIN
      mpx = agt.spin_multiplexer

    when Harbor::MULTIPLEXER_TYPE_TAXI
      mpx = agt.taxi_multiplexer

    else
      raise Sink.new
    end

    send_file_ship = SendFileShip.new
    tp = PlainTransporter.new(
      mpx,
      send_file_ship,
      true,
      8195,
      false)

    send_file_ship.init(rd, tp, @tour, @file_content)
    sid = send_file_ship.ship_id

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

    st = RudderStateStore.get_store(agt.agent_id).rent()
    st.init(rd, tp)
    mpx.add_rudder_state(rd, st)
    mpx.req_read(rd)

  rescue IOError => e
    BayLog.error_e(e)
    raise HttpException.new(HttpStatus::INTERNAL_SERVER_ERROR, file)
  end

end

#send_file_from_cache ⇒ Object 



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# File 'lib/baykit/bayserver/docker/send_file/file_content_handler.rb', line 204

def send_file_from_cache
  @tour.res.set_consume_listener(&ContentConsumeListener::DEV_NULL)
  @tour.res.headers.set_content_type(@mime_type)
  @tour.res.headers.set_content_length(File.size(@path))
  begin
    @tour.res.send_headers(Tour::TOUR_ID_NOCHECK)
    @tour.res.send_res_content(Tour::TOUR_ID_NOCHECK, @file_content.content, 0, @file_content.content_length)
    @tour.res.end_res_content(Tour::TOUR_ID_NOCHECK)
  rescue IOError => e
    BayLog.error_e(e)
    raise HttpException.new(HttpStatus::INTERNAL_SERVER_ERROR, @file_content.path)
  end
end