Setting Quarkus datasource db-kind configuration property by environment variable results in unrecognized configuration key warning

[mzuber]

Describe the bug

Setting the quarkus.datasource.db-kind configuration property via the environment variable QUARKUS_DATASOURCE_DB_KIND as described in the configuration reference results in the following warning at application start up:

2023-04-27 10:49:40,033 WARN  [io.qua.config] (Quarkus Main Thread) Unrecognized configuration key "quarkus.datasource.db.kind" was provided; it will be ignored; verify that the dependency extension for this configuration is set or that you did not make a typo

Expected behavior

No warning message is shown.

Actual behavior

Quarkus works fine, but the above warning message is shown.

How to Reproduce?

Set the quarkus.datasource.db-kind configuration property via the environment variable QUARKUS_DATASOURCE_DB_KIND.

GraalVM version (if different from Java)

GraalVM CE 22.3.1 (build 17.0.6+10-jvmci-22.3-b13)

Quarkus version or git rev

3.0.1.Final

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

Gradle 8.1.1

[mzuber]

Not sure if this is somehow related to #17818.

[geoand]

When are you setting this property?

I am asking because the property is a build time property, meaning that you cannot change it at runtime.

[mzuber]

When are you setting this property?

I am asking because the property is a build time property, meaning that you cannot change it at runtime.

Good point. I'm setting the property before application startup via a local .env file. Interestingly, I didn't had the warning with Quarkus 2.16.

[geoand]

cc @radcortez

[radcortez]

You cannot set QUARKUS_DATASOURCE_DB_KIND alone, because of the conversion rules for environment variables. This gets mapped to quarkus.datasource.db.kind (notice the dot instead of the dash in db.kind). When you set a single property like that, we cannot know if separators are dots or dashes.

You must set a quarkus.datasource.db-kind in application.properties (or any other source). This will provide us with some extra information to match what is expected. The value can be empty or something else, since env will override it; we need the property name; for more information check:

https://quarkus.io/guides/config-reference#environment-variables