How to write a ConfigMapping that takes values from the root?

[bulldog98]

I wrote a class like this:

@ConfigMapping
public interface RabbitMqConfig {
    @WithName("rabbitmq-host")
    String host();

    @WithDefault("5672")
    @WithName("rabbitmq-port")
    int port();

    @WithName("rabbitmq-password")
    String password();

    @WithName("rabbitmq-username")
    String username();
}

Now I have the problem that the app will not startup, since I have other variables set, how can I get around that?

Stacktrace:

2023-05-17 08:42:54,085 ERROR [io.qua.run.Application] (Quarkus Main Thread) Failed to start application (with profile [dev]): io.smallrye.config.ConfigValidationException: Configuration validation failed:
	PATH does not map to any root
	... (omitted lots of environment variables)
	at io.smallrye.config.ConfigMappingProvider.mapConfigurationInternal(ConfigMappingProvider.java:979)
	at io.smallrye.config.ConfigMappingProvider.lambda$mapConfiguration$3(ConfigMappingProvider.java:935)
	at io.smallrye.config.SecretKeys.doUnlocked(SecretKeys.java:28)
	at io.smallrye.config.ConfigMappingProvider.mapConfiguration(ConfigMappingProvider.java:935)
	at io.smallrye.config.ConfigMappings.mapConfiguration(ConfigMappings.java:91)
	at io.smallrye.config.SmallRyeConfigBuilder.build(SmallRyeConfigBuilder.java:624)
	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:111)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:71)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:44)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:124)
	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:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at io.quarkus.runner.bootstrap.StartupActionImpl$1.run(StartupActionImpl.java:104)
	at java.base/java.lang.Thread.run(Thread.java:833)

[luca-bassoricci]

If error is not due to missing mandatory values (eg host or password) add a stacktrace

[bulldog98]

I added a stacktrace to the question, also I checked via debugger that all values of the config are set.

[luca-bassoricci]

#21088

[bulldog98]

Hm I wanted to mimic use the smallrye-reactive-messaging-rabbitmq way of configuring stuff, so I can go back to it. Not sure if I should use @ConfigProperty instead.

[bulldog98]

I made a workaround using a custom ConfigSourceInterceptor implementation that maps "rabbitmq.something" to "rabbitmq-something"