gResponse.py

#!/usr/local/bin/python
#
#                               Copyright 2004
#                                     by
#                        The Board of Trustees of the
#                     Leland Stanford Junior University.
#                            All rights reserved.
#


__facility__ = "Online"
__abstract__ = "Response class"
__author__   = "Amedeo Perazzo <perazzo@slac.stanford.edu> SLAC - GLAST I&T/Online"
__date__     = ("$Date: 2005/07/11 17:08:14 $").split(' ')[1]
__version__  = "$Revision: 2.6 $"
__release__  = "$Name: R04-12-00 $"
__credits__  = "SLAC"

import LATTE.copyright_SLAC
import struct
import gException

class Response:
  def __init__(self, command, result):
    self.__timestamp = 0x0L
    self.__status    = 0
    self.__payloads  = []
    self.__formats  = command.payloadfmts()

    fmt = '!IQI'
    for payloadfmt in self.__formats:
      fmt += payloadfmt
    if len(result) != struct.calcsize(fmt):
      print "*** gResponse: received %d bytes but expected %d bytes" \
            %(len(result), struct.calcsize(fmt))
      self.__status = gException.LATInterfaceStatus.status('OCS_BDRESP')
    else:
      rsp = struct.unpack(fmt, result)
      self.__timestamp = rsp[1]
      self.__status    = rsp[2]
      self.__payloads  = rsp[3:]

  def timestamp(self):
    return self.__timestamp

  def status(self):
    return self.__status & 0x7fffffff

  def rvalue(self):
    return self.__status

  def value(self):
    return self.__payloads[0]

  def payloads(self):
    return self.__payloads

---