GtfsRealtimeTripLibrary exception

[nakkore]

I came across the following issue because of an apparently invalid trip updates feed. If I've understood correctly the real-time feed contained trips where the start_time was different from the departure_time/arrival_time defined in the static gtfs: in my case was 24:35:00 which represents the same time in different format.

trip_update { trip { trip_id: "VJ0d2212ef07777d1d4cf8a0bf518358dd02f84fdf" start_time: "00:35:00" start_date: "20200105" route_id: "104" }

This small inconsistency triggers the attached exception which can easily fixed by wrapping

blockStartTime = getBlockStartTimeForTripStartTime(instance, tripEntry.getId(), tripStartTime);

in a try-catch block. I'd log the error though.

[GtfsRealtimeSource.java:850] : Error updating from GTFS-realtime data sources
java.lang.NullPointerException
        at org.onebusaway.transit_data_federation.impl.realtime.gtfs_realtime.GtfsRealtimeTripLibrary.getBlockStartTimeForTripStartTime(GtfsRealtimeTripLibrary.java:468)
        at org.onebusaway.transit_data_federation.impl.realtime.gtfs_realtime.GtfsRealtimeTripLibrary.getTripDescriptorAsBlockDescriptor(GtfsRealtimeTripLibrary.java:552)
        at org.onebusaway.transit_data_federation.impl.realtime.gtfs_realtime.GtfsRealtimeTripLibrary.groupTripUpdatesAndVehiclePositions(GtfsRealtimeTripLibrary.java:309)
        at org.onebusaway.transit_data_federation.impl.realtime.gtfs_realtime.GtfsRealtimeSource.handeUpdates(GtfsRealtimeSource.java:417)
        at org.onebusaway.transit_data_federation.impl.realtime.gtfs_realtime.GtfsRealtimeSource.refresh(GtfsRealtimeSource.java:396)
        at org.onebusaway.transit_data_federation.impl.realtime.gtfs_realtime.GtfsRealtimeSource$RefreshTask.run(GtfsRealtimeSource.java:847)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

Thank you

[sheldonabrown]

Thanks @nakkore; what version/branch of onebusaway-application-modules are you seeing this in?

[nakkore]

on the master branch I should have mentioned it sorry

On Thu, 9 Jan 2020, 13:22 sheldonabrown, [email protected] wrote:

Thanks @nakkore https://github.com/nakkore; what version/branch of onebusaway-application-modules are you seeing this in?

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[nakkore]

BTW the same issue is happening on https://github.com/camsys/onebusaway-application-modules/releases/tag/onebusaway-application-modules-2.0.38-cs

Thanks

[sheldonabrown]

It looks like the trip isn't being found, perhaps because of how the service date is either determined or provided. Likely needs more investigation, but I've at least prevented the exception in this commit.

https://github.com/camsys/onebusaway-application-modules/commit/70b66ba8d76bd38ed5625b80fba4390f94a9cc2c

[nakkore]

cool, thank you.