My name is Jose Benitez, and I am working on a FIWARE project for the FINODEX accelerator (FINODEX012).

I am trying to run an example which is essentialy the same as the DoSAttack that is provided with FI-LAB CEP instance.

The differences are only three: The name of the parameter that arrives, which is now temperature instead of volume; The condition of the EPA, which now is only “TR3.temperature > TR2.temperature AND TR2.temperature > TR1.temperature”; And the temporal context, which is now an sliding window of 30 seconds long.

So with that and following the documentation, I started the Proton, which returns me the following answer:

Request:
GET http://localhost:8081/ProtonOnWebServerAdmin/resources/instances/ProtonOnWebServer <http://localhost:8081/ProtonOnWebServerAdmin/resources/instances/ProtonOnWebServer>
Response:

{ "state": "started”, “definitions-url": "/ProtonOnWebServerAdmin/resources/definitions/Temperature” }

I
(Note that I made a tunnel to the 8081 port because my cep instance is in cloud and I am working in local).
I have also restarted the Proton server via PUT queries.
Now I send the following request:
Request:
POST (application/json) http://localhost:8081/ProtonOnWebServer/rest/events <http://localhost:8081/ProtonOnWebServer/rest/events>

{"Name":"TrafficReport", "temperature":"23"}

Response
Could not parse json event java.lang.NullPointerException, reason: null

My Proton.properties located in /opt/tomcat10/webapps/ProtonOnWebServer/ is the following:

metadataFileName=/opt/repositories/tomcat10/samples/Temperature.json
metadataFilePathType=absolute
outputPortNumber=3301
inputPortNumber=3001

And Temperature.json is:

{"epn":{"events":[{"name":"TrafficReport","attributes":[

{"name":"temperature","type":"Integer","dimension":0}

]},{"name":"ExpectedCrash","attributes":[

{"name":"Incendio","type":"Double","dimension":0}

]}],"epas":[{"name":"IncreasingTraffic","epaType":"Sequence","context":"3MinAfterStartUp","inputEvents":[

{"name":"TrafficReport","alias":"TR1","consumptionPolicy":"Consume","instanceSelectionPolicy":"First"}

,

{"name":"TrafficReport","alias":"TR2","consumptionPolicy":"Consume","instanceSelectionPolicy":"First"}

,

{"name":"TrafficReport","alias":"TR3","consumptionPolicy":"Consume","instanceSelectionPolicy":"First"}

],"computedVariables":[],"assertion":"TR3.temperature>TR2.temperature AND TR2.temperature>TR1.temperature","evaluationPolicy":"Immediate","cardinalityPolicy":"Single","internalSegmentation":[],"derivedEvents":[{"name":"ExpectedCrash","reportParticipants":false,"expressions":{}}],"derivedActions":[]}],"contexts":{"temporal":[

{"name":"3MinAfterStartUp","type":"SlidingTimeWindow","atStartup":true,"neverEnding":true,"duration":30,"slidingPeriod":0,"initiators":[],"terminators":[]}

],"segmentation":[],"composite":[]},"consumers":[{"name":"SysTemCrashConsumer","type":"File","properties":[

{"name":"filename","value":"./sample/Temperatura_IndendioPrevisto.txt"}

,

{"name":"formatter","value":"json"}

,

{"name":"delimiter","value":";"}

,

{"name":"tagDataSeparator","value":"="}

,

{"name":"SendingDelay","value":"1000"}

],"events":[

{"name":"ExpectedCrash"}

],"actions":[]},{"name":"DoSAttackTRConsumer","type":"File","properties":[

{"name":"filename","value":"./sample/Temperature_Alert.txt"}

,

{"name":"formatter","value":"json"}

,

{"name":"delimiter","value":";"}

,

{"name":"tagDataSeparator","value":"="}

,

{"name":"SendingDelay","value":"1000"}

],"events":[

{"name":"TrafficReport"}

],"actions":[]}],"producers":[{"name":"TrafficReportFileProducer","type":"File","properties":[

{"name":"filename","value":"./sample/PruebaTemperatura.txt"}

,

{"name":"pollingInterval","value":"1000"}

,

{"name":"sendingDelay","value":"5000"}

,

{"name":"formatter","value":"json"}

,

{"name":"delimiter","value":";"}

,

{"name":"tagDataSeparator","value":"="}

],"events":[]}],"actions":[],"name”:”Temperature”}}

I can see in the tomcat's log the following:

Jul 17, 2015 2:39:28 PM com.ibm.hrl.proton.webapp.providers.EventJSONMessageReader readFrom
INFO: name value: TrafficReport looking for: Name
Jul 17, 2015 2:39:28 PM com.ibm.hrl.proton.webapp.providers.EventJSONMessageReader readFrom
SEVERE: Could not parse json event java.lang.NullPointerException, reason: null

Could you please help me find the error?
Thanks in advance
Jose Benítez
Cofounder Secmotic Innovation S.L.
http://www.secmotic.com <http://www.secmotic.com/>

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