Custom JWTGenerator [apim.jwt.generator_imp] setting is ignored

[kishiguro]

Description:

Even if we configure Custom JWTGenerator in [apim.jwt.generator_imp], the setting is completely ignored.

Steps to reproduce:

Set generator_impl config at repository/conf/deployment.toml

[apim.jwt]
enable = true
encoding = "base64"
generator_impl = "org.wso2.custom.TokenGenerator.CustomTokenGenerator"
claim_dialect = "http://wso2.org/claimsx"
header = "X-JWT-Assertion"
signing_algorithm = "SHA256withRSA"
enable_user_claims = true
claims_extractor_impl = "org.wso2.carbon.apimgt.impl.token.DefaultClaimsRetriever"

The CustomTokenGenerator https://github.com/Senthuran100/CustomJWTGenerator is used. We believe somewhere between carbon-apimgt v6.5.437 and v6.6.10 this bug is introduced.

Affected Product Version:

WSO2 API Manager 3.1.0-Alpha and after has the issue. WSO2 API Manager 3.1.0-M5 and previous version does not have the issue. In carbon-apimgt, v6.5.437 is ok, but v6.6.10 has the issue.

Environment details (with versions):

• OS: Mac OS 10.15.5 & Ubuntu 18.04
• Client:
• Env (Docker/K8s): Native

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[pttse]

Just curious is there any quick fix or update for this bug?
Our team now faces the same situation. Thanks!