[oauth] Error using tokens outside the UserInfoJson struct format

[stg-0]

What happened:

When the oauth flow returns a profile with an attributes field type that don't match the expected one, Grafana returns the error "Error decoding user info response".

What you expected to happen:

As I've defined the email_attribute_path in the config, I expect Grafana gets it from there without trying to match it with a specific structure, but it seems that never reaches that part of the code.

How to reproduce it (as minimally and precisely as possible):

Using an oauth profile with an attributes field that don't match the expected type: map[string][]string.

For example:
{ "id": "test", "attributes": [ { "roles": [ "roleA", "roleB" ] }, { "mail": "test@example.com" } ] }

One would expect that adding this in the defaults.ini file, things will go ok:
email_attribute_path = (attributes[].mail)[0]

Anything else we need to know?:

I've created this PR that seems to solve my use-case: #35985

Environment:

• Grafana version:
• Data source type & version:
• OS Grafana is installed on:
• User OS & Browser:
• Grafana plugins:
• Others:

[marefr]

As a potential workaround, try to use a different property than attributes and it should work as expected.

[Jguer]

@vtorosyan this might interest you in your JMESPath expansion work