emane/events/pathlossevent.py

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#
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from . import Event
from . import pathlossevent_pb2

class PathlossEvent(Event):
    IDENTIFIER = 101

    def __init__(self):
        self._event = pathlossevent_pb2.PathlossEvent()

    def append(self,nemId,**kwargs):
        hasForward = False
        hasReverse = False

        pathloss = self._event.pathlosses.add()

        pathloss.nemId = nemId

        for (name,value) in list(kwargs.items()):

            if name == 'forward':
                if isinstance(value,int) or \
                        isinstance(value,float):
                    hasForward = True
                    pathloss.forwardPathlossdB = value
                else:
                    raise ValueError("forward pathloss must be numeric")

            elif name == 'reverse':
                if isinstance(value,int) or \
                        isinstance(value,float):
                    hasReverse = True
                    pathloss.reversePathlossdB = value
                else:
                    raise ValueError("reverse pathloss must be numeric")

            else:
                raise KeyError("unknown parameter: %s" % name)

        if not hasForward:
            raise KeyError("must specify forward pathloss")
        elif not hasReverse:
            pathloss.reversePathlossdB = pathloss.forwardPathlossdB

    def serialize(self):
        return self._event.SerializeToString()

    def restore(self,data):
        self._event.ParseFromString(data)

    def __iter__(self):
        for pathloss in self._event.pathlosses:
            kwargs = {'forward': pathloss.forwardPathlossdB,
                      'reverse' : pathloss.reversePathlossdB}

            yield (pathloss.nemId,kwargs)