"no graph registered with the routerId"

Stephan Lehmler

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Jun 12, 2018, 5:23:18 AM6/12/18

to OpenTripPlanner Users

Hello,

I am a first time user of OTP and want to use it to get travel times for a set of centroids.

As I cannot use the scripting API (it seems to depend on Jython, which only supports Python2 & my code is using Python3), my current plan is to run otp on localhost and use the web API for queries.

I managed to build the graph.obj for my area of interest:

'java -jar otp/otp-1.2.0-shaded.jar --build otp/graphs/strasbourg'

And started the Grizzly server :

java -Xmx8G -jar otp-1.2.0-shaded.jar --router strasbourg --server --port 8813 --securePort 8814

But as soon as I try to enter any query, f.e. the one given in the intermediate tutorial, I land on a site saying:

"java.lang.NullPointerException null".

During the start-up of the server, I got some warnings regarding the routerID :

10:59:23.144 INFO (GraphService.java:189) Registering new router 'strasbourg'
10:59:23.144 WARN (InputStreamGraphSource.java:218) Graph file not found or not openable for routerId 'strasbourg': java.io.FileNotFoundException: \var\otp\graphs\strasbourg\Graph.obj (Das System kann die angegebene Datei nicht finden)
10:59:23.144 WARN (InputStreamGraphSource.java:144) Unable to load data for router 'strasbourg'.
10:59:23.144 WARN (GraphService.java:198) Can't register router ID 'strasbourg', no graph.

This obviously is the cause of the error.

What I want to ask is how to enable otp to register the routerID? Why can't otp find my Graph file?

My folder is structured like this:

.../otp/

- otp-1.2.0-shaded.jar

-graphs/

-strasbourg/

-Graph.obj

-strasbourg.osm.pbf

-gtfs.zip

Benhlima Ouidad

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Feb 17, 2022, 12:31:31 PM2/17/22

to OpenTripPlanner Users

Hi, did u manage to resolve it ? I am facing the same issue

Andrew Byrd

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Feb 21, 2022, 3:03:51 AM2/21/22

to Benhlima Ouidad, OpenTripPlanner Users

Hello,

The key error here is:

10:59:23.144 WARN (InputStreamGraphSource.java:218) Graph file not found or not openable for routerId 'strasbourg': java.io.FileNotFoundException: \var\otp\graphs\strasbourg\Graph.obj (Das System kann die angegebene Datei nicht finden)

Note the file path where OTP is looking for the graph. To quote from the documentation: "The OTP base directory defaults to /var/otp. Unless you tell OTP otherwise, all other configuration, input files and storage directories will be sought immediately beneath this one.” You will need to add a --basePath switch to your command to set your own base directory. The relevant documentation is at: http://docs.opentripplanner.org/en/v1.5.0/Configuration/#base-directory

The tricky bit here is that the --build option can take any relative or absolute path as an argument independent of the basePath, but the --router option's parameter resolves to the directory [basePath]/graphs/[routerId].

Also note that this information is specific to OTP 1.x which allows multiple routers per instance, and does not apply to OTP2 which supports only a single router per instance.

-Andrew

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Benhlima Ouidad

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Feb 21, 2022, 7:20:24 PM2/21/22

to Andrew Byrd, OpenTripPlanner Users

Yes, Thank you !