DiagTelemetryHandler.py

Go to the documentation of this file.

#!/usr/local/bin/python
#
#                               Copyright 2005
#                                     by
#                        The Board of Trustees of the
#                     Leland Stanford Junior University.
#                            All rights reserved.
#

__facility__ = "Online"
__abstract__ = "Diagnostics telemetry handler class"
__author__   = "S. Tuvi <stuvi@SLAC.Stanford.edu> SLAC - GLAST LAT I&T/Online"
__date__     = "2005/09/19 10:00:00"
__updated__  = "$Date: 2005/09/22 00:29:31 $"
__version__  = "$Revision: 1.2 $"
__release__  = "$Name: HEAD $"
__credits__  = "SLAC"

import LICOS.copyright_SLAC

from VSC import VscHandling

class DiagTelemetryHandler(VscHandling.TelemetryHandler):
  """!\brief Diagnostic telemetry handler class.

  """
  def __init__(self, apidRangeList):
    """!\brief DiagTelemetryHandler constructor.

    \param apidRangeList List containing from and to apids
    """
    VscHandling.TelemetryHandler.__init__(self)
    for (fromApId, toApId) in apidRangeList:
      self.handle(fromApId, toApId)
    self.callbacks = {}

  def process(self, telemetry):
    """!\brief Callback method for the telemetry handler.

    \param telemetry Raw telemetry packet
    """
    if telemetry.apid() in self.callbacks:
      for callback in self.callbacks[telemetry.apid()]:
        callback(telemetry)

  def register(self, apids, callback):
    """!\brief Register a callback for a given telemetry apid.

    \param apids    Telemetry apids
    \param callback Callback method
    """
    for apid in apids:
      if apid not in self.callbacks:
        self.callbacks[apid] = [callback]
      else:
        self.callbacks[apid].append(callback)

  def clear(self):
    """!\brief Clear all registered callbacks.

    """
    self.callbacks.clear()

  def unregister(self, apids, callback):
    """!\brief Unregister a registered callback.

    \param apids     Telemetry apids
    \param callback Callback method
    """
    for apid in apids:
      if apid in self.callbacks:
        if callback in self.callbacks[apid]:
          self.callbacks[apid].remove(callback)

---