Python Interest.setExclude方法代码示例

# 需要导入模块: from pyndn import Interest [as 别名]
# 或者: from pyndn.Interest import setExclude [as 别名]
 def reissueInterest(self):
     BACKOFF_THRESHOLD = 10
     if self.backoffCounter > BACKOFF_THRESHOLD:
         self.TIMEOUT += 50
         self.backoffCounter = 0
         self.logger.debug('Backing off interval to ' + str(self.TIMEOUT))
     if self.backoffCounter < -BACKOFF_THRESHOLD:
         self.TIMEOUT -= 50
         self.backoffCounter = 0
         self.logger.debug('Reducing backoff interval to ' + str(self.TIMEOUT))
     if self.nextIssue is not None:
         now = time.clock()
         if self.nextIssue > now:
             pass
            # time.sleep(self.nextIssue-now)
     interest = Interest(Name(self.prefix))
     interest.setInterestLifetimeMilliseconds(self.interestLifetime)
     interest.setMustBeFresh(False)
     if self.lastVersion is not None:
         e = Exclude()
         e.appendAny()
         e.appendComponent(self.lastVersion)
         interest.setExclude(e)
     interest.setChildSelector(1) #rightmost == freshest
     self.face.expressInterest(interest, self.onData, self.onTimeout)
     self.nextIssue = time.clock()+self.TIMEOUT/2000

# 需要导入模块: from pyndn import Interest [as 别名]
# 或者: from pyndn.Interest import setExclude [as 别名]
    def consume(self, prefix, onVerified, onVerifyFailed, onTimeout):
        """
        Consume data continuously under a given prefix, each time sending interest with
        the last timestamp excluded

        :param name: prefix to consume data under
        :type name: Name
        :param onData: onData(data) gets called after received data's onVerifyFailed
        :type onData: function object
        :param onVerifyFailed: onVerifyFailed(data) gets called if received data 
          cannot be verified
        :type onVerifyFailed: function object
        :param onTimeout: onTimeout(interest) gets called if a consumer interest times out
        :type onTimeout: function object
        """
        name = Name(prefix)
        interest = Interest(name)
        interest.setInterestLifetimeMilliseconds(self._defaultInterestLifetime)

        if self._currentTimestamp:
            exclude = Exclude()
            exclude.appendAny()
            exclude.appendComponent(Name.Component.fromVersion(self._currentTimestamp))
            interest.setExclude(exclude)

        self._face.expressInterest(interest, 
          lambda i, d : self.onData(i, d, onVerified, onVerifyFailed, onTimeout), 
          lambda i: self.beforeReplyTimeout(i, onVerified, onVerifyFailed, onTimeout))
        return

# 需要导入模块: from pyndn import Interest [as 别名]
# 或者: from pyndn.Interest import setExclude [as 别名]
    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

# 需要导入模块: from pyndn import Interest [as 别名]
# 或者: from pyndn.Interest import setExclude [as 别名]
    def onSchemaVerified(self, data, onUpdateSuccess, onUpdateFailed):
        print "trust schema verified: " + data.getName().toUri()
        version = data.getName().get(-1)
        namespace = data.getName().getPrefix(-2).toUri()
        if not (namespace in self._trustSchemas):
            print "unexpected: received trust schema for application namespace that's not being followed; malformed data name?"
            return

        if version.toVersion() <= self._trustSchemas[namespace]["version"]:
            msg = "Got out-of-date trust schema"
            print msg
            if onUpdateFailed:
                onUpdateFailed(msg)
            return

        self._trustSchemas[namespace]["version"] = version.toVersion()
        
        if "pending-schema" in self._trustSchemas[namespace] and self._trustSchemas[namespace]["pending-schema"].getName().toUri() == data.getName().toUri():
            # we verified a pending trust schema, don't need to keep that any more
            del self._trustSchemas[namespace]["pending-schema"]

        self._trustSchemas[namespace]["trust-schema"] = data.getContent().toRawStr()
        print self._trustSchemas[namespace]["trust-schema"]

        # TODO: what about trust schema for discovery, is discovery its own application?
        newInterest = Interest(Name(data.getName()).getPrefix(-1))
        newInterest.setChildSelector(1)
        exclude = Exclude()
        exclude.appendAny()
        exclude.appendComponent(version)
        newInterest.setExclude(exclude)
        self._face.expressInterest(newInterest, 
          lambda interest, data: self.onTrustSchemaData(interest, data, onUpdateSuccess, onUpdateFailed), 
          lambda interest: self.onTrustSchemaTimeout(interest, onUpdateSuccess, onUpdateFailed))

        # Note: this changes the verification rules for root cert, future trust schemas as well; ideally from the outside this doesn't have an impact, but do we want to avoid this?
        # Per reset function in ConfigPolicyManager; For now we don't call reset as we still want root cert in our certCache, instead of asking for it again (when we want to verify) each time we update the trust schema
        self._policyManager.config = BoostInfoParser()
        self._policyManager.config.read(self._trustSchemas[namespace]["trust-schema"], "updated-schema")
        
        if onUpdateSuccess:
            onUpdateSuccess(data.getContent().toRawStr(), self._trustSchemas[namespace]["is-initial"])
        self._trustSchemas[namespace]["is-initial"] = False
        return

# 需要导入模块: from pyndn import Interest [as 别名]
# 或者: from pyndn.Interest import setExclude [as 别名]
    def expressInterestPirAndRepeat(self):
        self.log.debug("callbackCountUniqueData: " + str(self._callbackCountUniqueData) + ", callbackCountTimeout: " + str(self._callbackCountTimeout))

        # Express interest for each pir we have discovered
        for pir in self.getPirs():
            interest = Interest(Name(pir.id))
            interest.setExclude(pir.status.getExclude())
            interest.setInterestLifetimeMilliseconds(1000.0)
            interest.setChildSelector(1)

            self.face.expressInterest(interest, self.onDataPir, self.onTimeoutPir)
            self._countExpressedInterests += 1
            debugStr = "Sent interest: " + interest.getName().toUri()
            debugStr += "\tExclude: " + interest.getExclude().toUri()
            debugStr += "\tLifetime: " + str(interest.getInterestLifetimeMilliseconds())
 
            self.log.debug(debugStr)
        # Reschedule again in 0.5 sec
        self.loop.call_later(1.0, self.expressInterestPirAndRepeat)

# 需要导入模块: from pyndn import Interest [as 别名]
# 或者: from pyndn.Interest import setExclude [as 别名]
 def onSchemaVerificationFailed(self, data, reason, onUpdateSuccess, onUpdateFailed):
     print "trust schema verification failed: " + reason
     namespace = data.getName().getPrefix(-2).toUri()
     if not (namespace in self._trustSchemas):
         print "unexpected: received trust schema for application namespace that's not being followed; malformed data name?"
         return
     
     newInterest = Interest(Name(data.getName()).getPrefix(-1))
     newInterest.setChildSelector(1)
     exclude = Exclude()
     exclude.appendAny()
     exclude.appendComponent(Name.Component.fromVersion(self._trustSchemas[namespace]["version"]))
     newInterest.setExclude(exclude)
     # Don't immediately ask for potentially the same content again if verification fails
     self._face.callLater(4000, lambda : 
       self._face.expressInterest(newInterest, 
         lambda interest, data: self.onTrustSchemaData(interest, data, onUpdateSuccess, onUpdateFailed), 
         lambda interest: self.onTrustSchemaTimeout(interest, onUpdateSuccess, onUpdateFailed)))
     return