Named oidc-client configuration from .env file is null

Describe the bug

I’m creating an named oidc-client in my application and the configuration come from a .env file. When quakus starts the config properties are loaded correctly but the injected client is null, same when injecting OidcClients, there’s no client inside. The exact same configuration in application.properties file is working fine. If the client is not a named one, it seem’s to work, but the grant types are not defined, i didn’t dig more on it because that’s what I saw when creating the reproduction.

Expected behavior

The injected OidcClient from .env configurations is not null.

Actual behavior

The injected OidcClient from .env configurations is null.

How to Reproduce?

Steps to reproduce:

1. Create a named oidc-client configuration in .env
2. Inject the OidcClient

Reproducer: https://github.com/Sirz3chs/quarkus-oidc-client-env-issue

Output of uname -a or ver

Linux 5.4.0-131-generic #147-Ubuntu SMP Fri Oct 14 17:07:22 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Output of java -version

OpenJDK Runtime Environment Temurin-17+35 (build 17+35)

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.13.4.Final

Build tool (ie. output of mvnw --version or gradlew --version)

Apache Maven 3.8.4 (9b656c72d54e5bacbed989b64718c159fe39b537)

Additional information

The issue is still reproductible in 2.14.0.Final. I’ve foud two closed issues that may be related #14480 #24078

[sberyozkin]

Hi @radcortez Thanks for the advice, quarkus.oidc-client.env-client.auth-server-url=${QUARKUS_OIDC_CLIENT__ENV_CLIENT__AUTH_SERVER_URL}

Looks OK to me, and @Sirz3chs has confirmed it works. I can work on a doc PR adding a note to the config docs and to OIDC docs to clarify https://github.com/quarkusio/quarkus/issues/29325#issuecomment-1322078347

[radcortez]

Yes, most likely, this is related to the ENV rules: https://quarkus.io/guides/config-reference#environment-variables

Which links to: https://smallrye.io/smallrye-config/2.12.1/config/environment-variables/

The issue is that when you have an ENV var like QUARKUS_OIDC_CLIENT__ENV_CLIENT__CLIENT_ID, without anymore information and where ENV_CLIENT is a name (dynamically generated by the user), we don’t know if the _ should map to a . or a -. It could be:

• quarkus.oidc.client.env.client.client.id
• quarkus.oidc.client.env-client.client.id

To disambiguate the case, we require to place the expected property name quarkus.oidc.client.env-client.client.id in a lower ordinal source. It can be application.properties and it can be empty because the ENV var will override it.