def __init__(self, description, clock):
self.metrics = []
self.setDescription(description)
self.sinkList = []
self.timestamp = None
self.clock = clock
self.jobID = None
self.addClockJob()
self.avgQoIManager = AverageQualityManager(description.updateInterval)
class ReputationSystem(object):
"""docstring for ReputationSystem"""
def __init__(self, description, clock):
self.metrics = []
self.setDescription(description)
self.sinkList = []
self.timestamp = None
self.clock = clock
self.jobID = None
self.addClockJob()
self.avgQoIManager = AverageQualityManager(description.updateInterval)
def setClock(self, clock):
if self.clock is not clock:
self.clock = clock
self.jobID = None # set to none because old jobs are not deleteable anymore
def addClockJob(self, deleteOldJob=False):
L.d2("ReputationSystem: addClockJob for Stream", self.description.fullSensorID, "with", self.validationInterval)
if deleteOldJob and self.jobID:
self.clock.removeJob(self.jobID)
self.jobID = self.clock.addJob(self.validationInterval, self.checkTimeRelevantMetrics, args=(self.timestamp),
reoccurring=False)
def setDescription(self, description):
self.description = description
# update validation interval
self.validationInterval = self.description.updateInterval + self.description.updateInterval * 0.05 # add some extra time to avoid races
def __del__(self):
for m in self.metrics:
del m
for sink in self.sinkList:
del sink
def setSink(self, sink):
sink.reputationsystem = self
self.sink = sink
def addSink(self, sink):
sink.reputationsystem = self
self.sinkList.append(sink)
def addQoIMetric(self, qoiMetric):
if not isinstance(qoiMetric, QoIMetric):
raise Exception("not a QoIMetric")
qoiMetric.repsys = self
self.metrics.append(qoiMetric)
for sink in self.sinkList:
sink.qoiMetricAdded(qoiMetric.name, qoiMetric.initialValue)
self.avgQoIManager.addQoIMetric(qoiMetric)
def update(self, data):
L.d2("ReputationSystem: update called for Stream", self.description.fullSensorID)
self.setTimestamp(data)
returnValues = {}
if data is not None:
for m in self.metrics:
value = m.update(data)
if value:
returnValues[value[0]] = value[1]
for sink in self.sinkList:
sink.update(m)
self.addClockJob(True)
self.avgQoIManager.calculateAvgQualities(returnValues)
return returnValues
def persist(self, observationIdList):
for sink in self.sinkList:
sink.persist(observationIdList)
def checkTimeRelevantMetrics(self, lastUpdate):
L.d("ReputationSystem: checkTimeRelevantMetrics called for Stream", self.description.fullSensorID)
L.d("ReputationSystem:", lastUpdate, self.timestamp)
if (lastUpdate is not None) and (lastUpdate == self.timestamp): # check if there was an update in the meanwhile
L.d("ReputationSystem: There was no update, lets punish!")
qoiValues = {}
for metric in self.metrics:
value = metric.nonValueUpdate()
if value:
qoiValues[value[0]] = value[1]
self.avgQoIManager.calculateAvgQualities(qoiValues)
self.addClockJob()
def setTimestamp(self, data):
if len(data.fields) != 0:
self.timestamp = datetime.datetime.strptime(data[data.fields[0]].observationResultTime, AbstractClock.parserformat)
