quarkus-config: Maven-Property conflicts with 'prefix' (Regression since Quarkus 2.12)

[mschorsch]

Describe the bug

Regression Quarkus 2.11 -> Quarkus 2.12

If the prefix in ConfigMapping has the same name as a Maven-Property, you will get the following error on startup (see reproducer):

2022-09-13 06:54:14,561 ERROR [io.qua.run.Application] (Quarkus Main Thread) Failed to start application (with profile dev): io.smallrye.config.ConfigValidationException: Configuration validation failed:
	xyz.version does not map to any root
	at io.smallrye.config.ConfigMappingProvider.mapConfiguration(ConfigMappingProvider.java:967)
	at io.smallrye.config.ConfigMappingProvider.lambda$mapConfiguration$3(ConfigMappingProvider.java:923)
	at io.smallrye.config.SecretKeys.lambda$doUnlocked$0(SecretKeys.java:20)
	at io.smallrye.config.SecretKeys.doUnlocked(SecretKeys.java:29)
	at io.smallrye.config.SecretKeys.doUnlocked(SecretKeys.java:19)
	at io.smallrye.config.ConfigMappingProvider.mapConfiguration(ConfigMappingProvider.java:923)
	at io.smallrye.config.SmallRyeConfigBuilder.build(SmallRyeConfigBuilder.java:450)
	at io.quarkus.runtime.generated.Config.readConfig(Unknown Source)
	at io.quarkus.deployment.steps.RuntimeConfigSetup.deploy(Unknown Source)
	at io.quarkus.runner.ApplicationImpl.doStart(Unknown Source)
	at io.quarkus.runtime.Application.start(Application.java:101)
	at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:110)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:67)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:41)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:120)
	at io.quarkus.runner.GeneratedMain.main(Unknown Source)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at io.quarkus.runner.bootstrap.StartupActionImpl$1.run(StartupActionImpl.java:103)
	at java.base/java.lang.Thread.run(Thread.java:829)

2022-09-13 06:54:14,561 ERROR [io.qua.run.Application] (Quarkus Main Thread) Failed to start application (with profile dev): io.smallrye.config.ConfigValidationException: Configuration validation failed:
	xyz.version does not map to any root
	at io.smallrye.config.ConfigMappingProvider.mapConfiguration(ConfigMappingProvider.java:967)
	at io.smallrye.config.ConfigMappingProvider.lambda$mapConfiguration$3(ConfigMappingProvider.java:923)
	at io.smallrye.config.SecretKeys.lambda$doUnlocked$0(SecretKeys.java:20)
	at io.smallrye.config.SecretKeys.doUnlocked(SecretKeys.java:29)
	at io.smallrye.config.SecretKeys.doUnlocked(SecretKeys.java:19)
	at io.smallrye.config.ConfigMappingProvider.mapConfiguration(ConfigMappingProvider.java:923)
	at io.smallrye.config.SmallRyeConfigBuilder.build(SmallRyeConfigBuilder.java:450)
	at io.quarkus.runtime.generated.Config.readConfig(Unknown Source)
	at io.quarkus.deployment.steps.RuntimeConfigSetup.deploy(Unknown Source)
	at io.quarkus.runner.ApplicationImpl.doStart(Unknown Source)
	at io.quarkus.runtime.Application.start(Application.java:101)
	at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:110)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:67)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:41)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:120)
	at io.quarkus.runner.GeneratedMain.main(Unknown Source)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at io.quarkus.runner.bootstrap.StartupActionImpl$1.run(StartupActionImpl.java:103)
	at java.base/java.lang.Thread.run(Thread.java:829)

2022-09-13 06:54:14,562 INFO  [io.qua.dep.dev.IsolatedDevModeMain] (main) Attempting to start live reload endpoint to recover from previous Quarkus startup failure
2022-09-13 06:54:14,562 INFO  [io.qua.dep.dev.IsolatedDevModeMain] (main) Attempting to start live reload endpoint to recover from previous Quarkus startup failure
Press [space] to restart, [e] to edit command line args (currently ''), [r] to resume testing, [o] Toggle test output, [h] for more options>

Note: At the moment i cannot upgrade my Quarkus projects to Quarkus 2.12.1.Final because the property is defined in a parent pom over which i have no control.

Expected behavior

No response

Actual behavior

No response

How to Reproduce?

reproducer.zip

Output of uname -a or ver

No response

Output of java -version

Java 11

GraalVM version (if different from Java)

No response

Quarkus version or git rev

Quarkus 2.12.1.Final

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

Maven

Additional information

No response

[quarkus-bot]

/cc @quarkusio/devtools

[mschorsch]

cc @radcortez

[radcortez]

As a workaround, you can set smallrye.config.mapping.validate-unknown=false.

[mschorsch]

As a workaround, you can set smallrye.config.mapping.validate-unknown=false.

👍