test_loadshed.py

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#
#                               Copyright 2005
#                                     by
#                        The Board of Trustees of the
#                     Leland Stanford Junior University.
#                            All rights reserved.
#

__facility__ = "Online"
__abstract__ = "Test script that issues a loadshed command"
__author__   = "Selim Tuvi <stuvi@slac.stanford.edu> SLAC - GLAST I&T/Online"
__date__     = "2006/04/27 00:00:00"
__updated__  = "$Date: 2006/04/27 22:54:58 $"
__version__  = "$Revision: 1.2 $"
__release__  = "$Name: HEAD $"
__credits__  = "SLAC"

import LICOS.copyright_SLAC

import sys
import time

from LICOS.util.gOptions             import Options

from LICOS.tools.proxy.VscProxyPorts import VscProxyPorts
from LICOS.scriptEngine.ScriptEngineConnector import ScriptEngineConnector
from LCAT_encoder import LCAT_CmdPacketFactory

def usage():
  return """

test_loadshed usage:

Mandatory options:
--vscip    Specify the VSC crate ip address

Optional options:
--portbase Specify portbase

Example:
$ test_loadshed --vscip lat-elf21 --portbase 3000

"""

if __name__ == "__main__":
  options = Options(['vscip'],['portbase'])
  try:
    options.parse()
  except Exception, msg:
    options.usage(usage())
    raise Exception, msg
    
  if options.portbase is None:
    portbase = 3000
  else:
    portbase = int(options.portbase)
  ports = VscProxyPorts(portbase)
    
  answer = raw_input("Do you really want to perform a loadshed (confirm by entering 'YES')? ")
  if answer != "YES":
    print "Loadshed aborted."
    sys.exit(1)
  print "Performing loadshed..."
  p = ScriptEngineConnector(options.vscip,None,None)
  p.start()
  # Issue lookatme in case we are in backdoor mode.
  cmd = LCAT_CmdPacketFactory('LIMLOOKATME')
  p.execute(cmd)
  time.sleep(1)
  p.ssr(0)
  cmd = LCAT_CmdPacketFactory('LIMLOADSHED')
  p.execute(cmd)
  print "Loadshed command issued. LAT shutdown expected in 15 seconds."
  print "End of run."
  sys.exit(0)

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