Class: Baykit::BayServer::Docker::Ajp::AjpPacketUnPacker

Inherits:
Protocol::PacketUnPacker
  • Object
show all
Includes:
Agent, Util
Defined in:
lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb

Constant Summary collapse

STATE_READ_PREAMBLE = 
1
STATE_READ_BODY = 
2
STATE_END = 
3

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(pkt_store, cmd_unpacker) ⇒ AjpPacketUnPacker

Returns a new instance of AjpPacketUnPacker.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 35

def initialize(pkt_store, cmd_unpacker)
  @pkt_store = pkt_store
  @cmd_unpacker = cmd_unpacker
  @preamble_buf = SimpleBuffer.new
  @body_buf = SimpleBuffer.new
  reset
end

Instance Attribute Details

#body_buf ⇒ Object (readonly)

Returns the value of attribute body_buf.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 19

def body_buf
  @body_buf
end

#body_len ⇒ Object (readonly)

Returns the value of attribute body_len.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 29

def body_len
  @body_len
end

#cmd_unpacker ⇒ Object (readonly)

Returns the value of attribute cmd_unpacker.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 28

def cmd_unpacker
  @cmd_unpacker
end

#need_data ⇒ Object (readonly)

Returns the value of attribute need_data.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 33

def need_data
  @need_data
end

#pkt_store ⇒ Object (readonly)

Returns the value of attribute pkt_store.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 27

def pkt_store
  @pkt_store
end

#preamble_buf ⇒ Object (readonly)

Returns the value of attribute preamble_buf.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 18

def preamble_buf
  @preamble_buf
end

#read_bytes ⇒ Object (readonly)

Returns the value of attribute read_bytes.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 30

def read_bytes
  @read_bytes
end

#state ⇒ Object (readonly)

Returns the value of attribute state.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 25

def state
  @state
end

#to_server ⇒ Object (readonly)

Returns the value of attribute to_server.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 32

def to_server
  @to_server
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 31

def type
  @type
end

Instance Method Details

#body_read ⇒ Object 



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 137

def body_read()
  if @need_data
     @type = AjpType::DATA
  else
     @type =@body_buf.buf[0].codepoints[0] & 0xff
  end
end

#bytes_received(buf) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 52

def bytes_received(buf)
  suspend = false
  pos = 0

  while pos < buf.length
    if @state == STATE_READ_PREAMBLE
      len = AjpPacket::PREAMBLE_SIZE - @preamble_buf.length
      if buf.length - pos < len
        len = buf.length - pos
      end
      @preamble_buf.put(buf, pos, len)
      pos += len

      if @preamble_buf.length == AjpPacket::PREAMBLE_SIZE
        preamble_read()
        change_state(STATE_READ_BODY)
      end
    end

    if @state == STATE_READ_BODY
      len = @body_len - @body_buf.length
      if len > buf.length - pos
        len = buf.length - pos
      end

      @body_buf.put(buf, pos, len)
      pos += len

      if @body_buf.length == @body_len
        body_read()
        change_state(STATE_END)
      end
    end

    if @state == STATE_END
      #BayLog.debug "AJP PacketUnpacker parse end: preamblelen=#{@preamble_buf.length} bodyLen=#{@body_buf.length}"

      pkt = @pkt_store.rent(@type)
      pkt.to_server = @to_server
      pkt.new_ajp_header_accessor.put_bytes(@preamble_buf.buf, 0, @preamble_buf.length)
      pkt.new_ajp_data_accessor.put_bytes(@body_buf.buf, 0, @body_buf.length)

      begin
        next_action = @cmd_unpacker.packet_received(pkt)
      ensure
        @pkt_store.Return(pkt)
      end
      reset
      @need_data = @cmd_unpacker.need_data

      if next_action == NextSocketAction::SUSPEND
        suspend = true
      elsif next_action != NextSocketAction::CONTINUE
        return next_action
      end
    end
  end

  #BayLog.debug("ajp: next action=read")
  if suspend
    return NextSocketAction::SUSPEND
  else
    return NextSocketAction::CONTINUE
  end
end

#change_state(new_state) ⇒ Object 



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 118

def change_state(new_state)
  @state = new_state
end

#preamble_read ⇒ Object 



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 122

def preamble_read
  data = @preamble_buf.buf

  if data[0].codepoints[0] == 0x12 && data[1].codepoints[0] == 0x34
    @to_server = true
  elsif data[0] == 'A' && data[1] == 'B'
    @to_server = false
  else
    raise RuntimeError.new("Must be start with 0x1234 or 'AB'")
  end

  @body_len =  ((data[2].codepoints[0] << 8) | (data[3].codepoints[0] & 0xff)) & 0xffff
  BayLog.trace("ajp: read packet preamble: bodyLen=%d", @body_len)
end

#reset ⇒ Object 



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# File 'lib/baykit/bayserver/docker/ajp/ajp_packet_unpacker.rb', line 43

def reset
  @state = STATE_READ_PREAMBLE
  @body_len = 0
  @read_bytes = 0
  @need_data = false
  @preamble_buf.reset
  @body_buf.reset
end