aud claim can be an array

[corbs9]

Proposal

It seems that when trying to provide an array of claims, the extensions fails due to it checking whether the value is either a String, Integer, or Long. According to RFC 7519, the aud in general is an array of StringOrURI but in under a special case can it be a single string.

The issue is here where it checks the reserved list of claims and fails when the value provided is an Array.

Would you mind if I raise a PR to address this issue?

Reproduction steps

• Create response mapping:

{
  "request": {
    "method": "POST",
    "urlPath": "/test/idp/login"
  },
  "response": {
    "status": 200,
    "headers": {
      "Content-Type": "application/json"
    },
    "transformers": [
      "response-template"
    ],
    "jsonBody": {
      "accessToken": "{{{jwt sub='someone@example.com' aud=(claims 'some_audience') reference=af961c9a-365e-4c76-b98a-352e140e51d8 }}}"
    }
  }
}

• Call the endpoint:

curl -X POST  "http://localhost:8081/test/idp/login"

• Returns an error
  1:3: java.lang.ClassCastException: class java.util.ArrayList cannot be cast to class java.lang.String (java.util.ArrayList and java.lang.String are in module java.base of loader 'bootstrap')%

References

No response