shibboleth - uncaught runtime exception on request

[Rod Widdowson]

> I suspect, it might have something to do with my script attribute resolver attribute Definition?

Yup.

> java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0

I'll guess is because

>         pubCreds = subjects[0].getPrincipals().toArray();

subjects isn't an array/hasn’t been initialized.  Given that you are running 3.3 I'd next guess that this is your problem (from the
doc)

>[...] subjects [...].  Note that these will only be present if the attribute resolution has been associated with an act of 
> authentication (and so this will not work for back channel requests). [1]


[1] https://wiki.shibboleth.net/confluence/display/IDP30/ScriptedAttributeDefinition