def onDataNotFound(self, prefix, interest, face, interestFilterId, filter): print "Data not found for interest: " + interest.getName().toUri() if interest.getName().get( -3).toEscapedString() == "bout" or interest.getName().get( -3).toEscapedString() == "genericfunctions": if interest.getName().toUri() in self.remainingTasks: # We are already trying to process this task, so we don't add it to the list of tasks pass else: self.remainingTasks[interest.getName().toUri()] = "in-progress" else: print "Got unexpected interest: " + interest.getName().toUri() # .../SAMPLE/<timestamp> timestamp = interest.getName().get(-1) catalogInterest = Interest(self.catalogPrefix) # Traverse catalogs in range from leftmost child catalogInterest.setChildSelector(0) catalogInterest.setMustBeFresh(True) catalogInterest.setInterestLifetimeMilliseconds(4000) exclude = Exclude() exclude.appendAny() exclude.appendComponent(timestamp) catalogInterest.setExclude(catalogInterest) self.face.expressInterest(catalogInterest, self.onCatalogData, self.onCatalogTimeout) print "Expressed catalog interest " + catalogInterest.getName().toUri() return
def onCatalogData(self, interest, data): # Find the next catalog print "Received catalog data " + data.getName().toUri() catalogTimestamp = data.getName().get(-2) exclude = Exclude() exclude.appendAny() exclude.appendComponent(catalogTimestamp) nextCatalogInterest = Interest(interest.getName()) nextCatalogInterest.setExclude(exclude) nextCatalogInterest.setChildSelector(0) nextCatalogInterest.setMustBeFresh(True) nextCatalogInterest.setInterestLifetimeMilliseconds(2000) self.face.expressInterest(nextCatalogInterest, self.onCatalogData, self.onCatalogTimeout) print "Expressed catalog interest " + nextCatalogInterest.getName( ).toUri() # We ignore the version in the catalog if self.encrypted: self.consumer.consume(contentName, self.onCatalogConsumeComplete, self.onConsumeFailed) else: self.onCatalogConsumeComplete(data, data.getContent())
def onData(self, interest, data): self._keyChain.verifyData(data, self.onVerified, self.onVerifyFailed) dataName = data.getName() dataQueue = None if __debug__: print("Got data: " + dataName.toUri() + "; " + data.getContent().toRawStr()) for i in range(0, len(dataName)): if dataName.get(i).toEscapedString() == AGGREGATION_COMPONENT: dataType = dataName.get(i - 1).toEscapedString() aggregationType = dataName.get(i + 1).toEscapedString() startTime = int(dataName.get(i + 2).toEscapedString()) endTime = int(dataName.get(i + 3).toEscapedString()) childName = dataName.get(i - 3).toEscapedString() dataAndAggregationType = dataType + aggregationType dataDictKey = self.getDataDictKey(startTime, endTime, childName) dataQueue = self._dataQueue[dataAndAggregationType] dataQueue._dataDict[dataDictKey] = data break # TODO: check what if interval/starttime is misconfigured if dataQueue: self.calculateAggregation(dataType, aggregationType, dataQueue._childrenList, startTime, endTime - startTime, dataQueue._publishingPrefix) # Always ask for the next piece of data when we receive this one; assumes interval does not change; this also assumes there are no more components after endTime #newInterestName = dataName.getPrefix(i + 2).append(str(endTime)).append(str(endTime + (endTime - startTime))) # We don't expect aggregated data name to be continuous within our given time window, so we ask with exclusion instead newInterestName = dataName.getPrefix(i + 2) newInterest = Interest(interest) newInterest.setName(newInterestName) newInterest.setChildSelector(0) exclude = Exclude() exclude.appendAny() exclude.appendComponent(dataName.get(i + 2)) newInterest.setExclude(exclude) self._face.expressInterest(newInterest, self.onData, self.onTimeout) if __debug__: print(" issue interest: " + interest.getName().toUri()) return
def test_exclude_matches(self): exclude = Exclude() exclude.appendComponent(Name("%00%02").get(0)) exclude.appendAny() exclude.appendComponent(Name("%00%20").get(0)) component = Name("%00%01").get(0) self.assertFalse(exclude.matches(component), component.toEscapedString() + " should not match " + exclude.toUri()) component = Name("%00%0F").get(0) self.assertTrue(exclude.matches(component), component.toEscapedString() + " should match " + exclude.toUri()) component = Name("%00%21").get(0) self.assertFalse(exclude.matches(component), component.toEscapedString() + " should not match " + exclude.toUri())
def __init__(self): self._data = [] self._exclude = Exclude()