Class: Baykit::BayServer::Docker::Http::H2::H2InboundHandler

Inherits:
Object
  • Object
show all
Includes:
Agent, Common::InboundHandler, Command, H2Handler, Protocol, Tours, Util
Defined in:
lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb

Defined Under Namespace

Classes: InboundProtocolHandlerFactory

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ H2InboundHandler

Returns a new instance of H2InboundHandler.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 64

def initialize
  @window_size = BayServer.harbor.tour_buffer_size
  @settings = H2Settings.new
  @analyzer = HeaderBlockAnalyzer.new
  @req_header_tbl = HeaderTable.create_dynamic_table()
  @res_header_tbl = HeaderTable.create_dynamic_table()
  @header_buffer = SimpleBuffer.new
end

Instance Attribute Details

#analyzer ⇒ Object (readonly)

Returns the value of attribute analyzer.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 58

def analyzer
  @analyzer
end

#header_buffer ⇒ Object (readonly)

Returns the value of attribute header_buffer.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 62

def header_buffer
  @header_buffer
end

#header_read ⇒ Object (readonly)

Returns the value of attribute header_read.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 55

def header_read
  @header_read
end

#http_protocol ⇒ Object (readonly)

Returns the value of attribute http_protocol.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 59

def http_protocol
  @http_protocol
end

#protocol_handler ⇒ Object (readonly)

Returns the value of attribute protocol_handler.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 52

def protocol_handler
  @protocol_handler
end

#req_cont_len ⇒ Object (readonly)

Returns the value of attribute req_cont_len.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 53

def req_cont_len
  @req_cont_len
end

#req_cont_read ⇒ Object (readonly)

Returns the value of attribute req_cont_read.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 54

def req_cont_read
  @req_cont_read
end

#req_header_tbl ⇒ Object (readonly)

Returns the value of attribute req_header_tbl.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 60

def req_header_tbl
  @req_header_tbl
end

#res_header_tbl ⇒ Object (readonly)

Returns the value of attribute res_header_tbl.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 61

def res_header_tbl
  @res_header_tbl
end

#settings ⇒ Object (readonly)

Returns the value of attribute settings.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 57

def settings
  @settings
end

#window_size ⇒ Object (readonly)

Returns the value of attribute window_size.



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 56

def window_size
  @window_size
end

Instance Method Details

#handle_continuation(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 373

def handle_continuation(cmd)
  BayLog.debug("%s handle_continuation: stm=%d", ship, cmd.stream_id)
  tur = get_tour(cmd.stream_id)
  if tur == nil
    raise ArgumentError("Invalid stream id: " + cmd.stream_id)
  end

  @header_buffer.put(cmd.data, cmd.start, cmd.length)
  if cmd.flags.end_headers?
    return on_end_header(tur, @header_buffer.bytes, 0, @header_buffer.length)
  end

  return NextSocketAction::CONTINUE
end

#handle_data(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 231

def handle_data(cmd)
  BayLog.debug("%s handle_data: stm=%d len=%d", ship, cmd.stream_id, cmd.length)

  tur = get_tour(cmd.stream_id)
  if tur == nil
    raise RuntimeError.new("Invalid stream id: #{cmd.stream_id}")
  end
  if !tur.reading?
    raise ProtocolException.new("%s Tour is not reading.", tur)
  end

  begin
    success = false
    if cmd.length > 0
      tid = tur.tour_id

      success = tur.req.post_req_content(Tour::TOUR_ID_NOCHECK, cmd.data, cmd.start, cmd.length) do |len, resume|
        tur.check_tour_id(tid)
        if len > 0
          upd = CmdWindowUpdate.new(cmd.stream_id)
          upd.window_size_increment = len
          upd2 = CmdWindowUpdate.new( 0)
          upd2.window_size_increment = len
          begin
            @protocol_handler.post(upd)
            @protocol_handler.post(upd2)
          rescue IOError => e
            BayLog.error_e(e)
          end
        end

        if resume
          tur.ship.resume_read(Ship::SHIP_ID_NOCHECK)
        end
      end

      if tur.req.bytes_posted >= tur.req.headers.content_length
        if tur.error != nil
          # Error has occurred on header completed
          BayLog.debug("%s Delay report error", tur)
          raise tur.error
        else
          end_req_content(tur.id(), tur)
        end
      end
    end

    if !success
      return NextSocketAction::SUSPEND
    else
      return NextSocketAction::CONTINUE
    end

  rescue HttpException => e
    tur.req.abort
    tur.res.send_http_exception(Tour::TOUR_ID_NOCHECK, e)
    return NextSocketAction::CONTINUE
  end

end

#handle_go_away(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 353

def handle_go_away(cmd)
  BayLog.debug("%s received GoAway: lastStm=%d code=%d desc=%s debug=%s",
               ship, cmd.last_stream_id, cmd.error_code, H2ErrorCode.msg.get(cmd.error_code.to_s.to_sym), cmd.debug_data);
  return NextSocketAction::CLOSE
end

#handle_headers(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 208

def handle_headers(cmd)
  BayLog.debug("%s handle_headers: stm=%d dep=%d weight=%d", ship, cmd.stream_id, cmd.stream_dependency, cmd.weight)

  tur = get_tour(cmd.stream_id)
  if tur == nil
    BayLog.error(BayMessage.get(:INT_NO_MORE_TOURS))
    tur = ship.get_tour(cmd.stream_id, true)
    tur.res.send_error(Tour::TOUR_ID_NOCHECK, HttpStatus::SERVICE_UNAVAILABLE, "No available tours")
    return NextSocketAction::CONTINUE
  end
  if !tur.preparing?
    raise ProtocolException.new("%s Tour is not preparing.", tur)
  end

  if cmd.flags.end_headers?
    return on_end_header(tur, cmd.data, cmd.start, cmd.length)
  else
    @header_buffer.put(cmd.data, cmd.start, cmd.length)
  end

  NextSocketAction::CONTINUE
end

#handle_ping(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 359

def handle_ping(cmd)
  BayLog.debug("%s handle_ping: stm=%d", ship, cmd.stream_id)

  res = CmdPing.new(cmd.stream_id, H2Flags.new(H2Flags::FLAGS_ACK), cmd.opaque_data)
  @protocol_handler.post(res)
  return NextSocketAction::CONTINUE
end

#handle_preface(cmd) ⇒ Object

implements H2CommandHandler



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 189

def handle_preface(cmd)
  BayLog.debug("%s h2: handle_preface: proto=%s", ship, cmd.protocol)

  @http_protocol = cmd.protocol

  set = CmdSettings.new(H2ProtocolHandler::CTL_STREAM_ID)
  set.stream_id = 0
  set.items.append(CmdSettings::Item.new(CmdSettings::MAX_CONCURRENT_STREAMS, TourStore::MAX_TOURS))
  set.items.append(CmdSettings::Item.new(CmdSettings::INITIAL_WINDOW_SIZE, @window_size))
  @protocol_handler.post(set)

  set = CmdSettings.new(H2ProtocolHandler::CTL_STREAM_ID)
  set.stream_id = 0
  set.flags.set_ack(true)

  return NextSocketAction::CONTINUE
end

#handle_priority(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 292

def handle_priority(cmd)
  if cmd.stream_id == 0
    raise ProtocolException.new("Invalid stream id")
  end

  BayLog.debug("%s handlePriority: stmid=%d dep=%d, wgt=%d",
               ship, cmd.stream_id, cmd.stream_dependency, cmd.weight);

  return NextSocketAction::CONTINUE
end

#handle_rst_stream(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 367

def handle_rst_stream(cmd)
  BayLog.warn("%s received RstStream: stmid=%d code=%d desc=%s",
               ship, cmd.stream_id, cmd.error_code, H2ErrorCode.msg.get(cmd.error_code.to_s.to_sym))
  return NextSocketAction::CONTINUE
end

#handle_settings(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 303

def handle_settings(cmd)
  BayLog.debug("%s handleSettings: stmid=%d", ship, cmd.stream_id);

  if cmd.flags.ack?
    return NextSocketAction::CONTINUE
  end

  cmd.items.each do |item|
    BayLog.debug("%s handle: Setting id=%d, value=%d", ship, item.id, item.value);
    case item.id
    when CmdSettings::HEADER_TABLE_SIZE
      @settings.header_table_size = item.value

    when CmdSettings::ENABLE_PUSH
      @settings.enable_push = (item.value != 0)

    when CmdSettings::MAX_CONCURRENT_STREAMS
      @settings.max_concurrent_streams = item.value

    when CmdSettings::INITIAL_WINDOW_SIZE
      @settings.initial_window_size = item.value

    when CmdSettings::MAX_FRAME_SIZE
      @settings.max_frame_size = item.value

    when CmdSettings::MAX_HEADER_LIST_SIZE
      @settings.max_header_list_size = item.value

    else
      BayLog.debug("Invalid settings id (Ignore): %d", item.id)

    end
  end

  res = CmdSettings.new(0, H2Flags.new(H2Flags::FLAGS_ACK))
  @protocol_handler.post(res)
  return NextSocketAction::CONTINUE
end

#handle_window_update(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 342

def handle_window_update(cmd)
  BayLog.debug("%s handleWindowUpdate: stmid=%d siz=%d", ship,  cmd.stream_id, cmd.window_size_increment);

  if cmd.window_size_increment == 0
    raise ProtocolException.new("Invalid increment value")
  end

  window_size = cmd.window_size_increment
  return NextSocketAction::CONTINUE
end

#init(proto_handler) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 84

def init(proto_handler)
  @protocol_handler = proto_handler
end

#on_protocol_error(err) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 168

def on_protocol_error(err)
  BayLog.error_e err
  cmd = CmdGoAway.new(H2ProtocolHandler::CTL_STREAM_ID)
  cmd.stream_id = H2ProtocolHandler::CTL_STREAM_ID
  cmd.last_stream_id = H2ProtocolHandler::CTL_STREAM_ID
  cmd.error_code = H2ErrorCode::PROTOCOL_ERROR
  cmd.debug_data = "Thank you!"
  begin
    @protocol_handler.post(cmd)
    @protocol_handler.ship.post_close()
  rescue IOError => e
    BayLog.error_e(e)
  end
  return false
end

#reset ⇒ Object

implements Reusable



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 77

def reset()
  @header_read = false
  @req_cont_len = 0
  @req_cont_read = 0
  @header_buffer.reset
end

#send_end_tour(tur, &callback) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 161

def send_end_tour(tur, &callback)
  BayLog.debug("%s send_end_tour. tur=%s", self, tur)
  cmd = CmdData.new(tur.req.key, nil, [], 0, 0)
  cmd.flags.set_end_stream(true)
  @protocol_handler.post(cmd, &callback)
end

#send_res_content(tur, bytes, ofs, len, &callback) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 155

def send_res_content(tur, bytes, ofs, len, &callback)
  BayLog.debug("%s send_res_content len=%d", self, len)
  cmd = CmdData.new(tur.req.key, nil, bytes, ofs, len);
  @protocol_handler.post(cmd, &callback)
end

#send_res_headers(tur) ⇒ Object

implements InboundHandler



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# File 'lib/baykit/bayserver/docker/http/h2/h2_inbound_handler.rb', line 92

def send_res_headers(tur)
  bld = HeaderBlockBuilder.new()

  header_blocks = []

  blk = bld.build_header_block(":status", tur.res.headers.status.to_s, @res_header_tbl)
  header_blocks << blk

  # headers
  if BayServer.harbor.trace_header
    BayLog.info("%s res status: %d", tur, tur.res.headers.status)
  end
  tur.res.headers.names.each do |name|
    if name.casecmp?("connection")
      BayLog.trace("%s Connection header is discarded", tur)
    else
      tur.res.headers.values(name).each do |value|
        if BayServer.harbor.trace_header
          BayLog.info("%s H2 res header: %s=%s", tur, name, value)
        end
        blk = bld.build_header_block(name, value, @res_header_tbl)
        header_blocks.append(blk)
      end
    end
  end

  buf = SimpleBuffer.new
  HeaderBlockRenderer.new(buf).render_header_blocks(header_blocks)

  pos = 0
  len = buf.length
  while len > 0
    chunk_len = [len, H2Packet::DEFAULT_PAYLOAD_MAXLEN].min

    if pos == 0
      hcmd = CmdHeaders.new(tur.req.key)
      hcmd.excluded = false
      hcmd.data = buf.bytes
      hcmd.start = pos
      hcmd.length = len
      cmd = hcmd

    else
      ccmd = CmdContinuation.new(tur.req.key)
      ccmd.data = buf.bytes
      ccmd.start = pos
      ccmd.length = len
      cmd = ccmd

    end

    cmd.flags.set_padded(false)

    pos += chunk_len
    len -= chunk_len
    if len == 0
        cmd.flags.set_end_headers(true)
    end

    @protocol_handler.post(cmd)
  end
end