LTI 1.3 Grading Service
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Ole
Jul 15, 2023, 5:32:02 AM7/15/23
to OpenOlat
I am developing an LTI 1.3 tool using LTIJS. The platform is OpenOlat 17.2.7. Connecting from the platform to the tool is working so far. Now I want to submit a grade from the tool to the platform.
LTIJS sends the following request to the platform access token endpoint:
{
grant_type: 'client_credentials',
grant_type: 'client_credentials',
client_assertion_type: 'urn:ietf:params:oauth:client-assertion-type:jwt-bearer',
client_assertion: 'TOKEN',
scope: 'https://purl.imsglobal.org/spec/lti-ags/scope/score'
}
client_assertion: 'TOKEN',
scope: 'https://purl.imsglobal.org/spec/lti-ags/scope/score'
}
where `TOKEN` is what I understand is the LTIKEY.
OpenOlat responds with:
Error: Response code 500 (500)
Response body: <!DOCTYPE html><html><head><title>Unexpected error</title></head><body><h3>An unexpected error occured... Sorry!</h3><p>Error code: 500</p></body></html>
Response body: <!DOCTYPE html><html><head><title>Unexpected error</title></head><body><h3>An unexpected error occured... Sorry!</h3><p>Error code: 500</p></body></html>
Which isn't particularly helpful.
Thus my first question would be: Is this even implemented yet? If it is, can someone point me in the direction of what is going wrong?
Thanks alot!
Ole
Florian Gnaegi
Jul 18, 2023, 9:50:40 AM7/18/23
to open...@googlegroups.com
Hi
Try setting a breakpoint in
org.olat.ims.lti13LTI13PlatformDispatcherDelegate.handleAgs()
to see what is going on in detail.
Do you get any errors in your OpenOlat logfile? Try seeting all the LTI13* classes to loglevel Debug and then look at your OpenOlat logfile (you can do this in the UI Administration -> Systen -> Error -> Log levels
Cheers
Florian
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