Error in interpreting a config mapping

[dcotfr]

Describe the bug

Misinterpreted configuration mapping

Expected behavior

core.tyre.form=round and core.tyre.color=black variables correctly loaded at startup

Actual behavior

2023-05-01 11:29:46,660 ERROR [io.qua.run.Application] (Quarkus Main Thread) Failed to start application (with profile [dev]): io.smallrye.config.ConfigValidationException: Configuration validation failed:
java.util.NoSuchElementException: SRCFG00014: The config property core.tyre.size.form is required but it could not be found in any config source
java.util.NoSuchElementException: SRCFG00014: The config property core.tyre.size.color is required but it could not be found in any config source
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)

How to Reproduce?

1. Create a sample project with

• application.properties

core.name=Name
core.kafka.bootstrap.servers=http://localhost:9092
core.tyre.form=round
core.tyre.color=black
core.tyre.size.width=12.3

• org.acme.CoreConfig

package org.acme;

import io.smallrye.config.ConfigMapping;

import java.util.Optional;

@ConfigMapping(prefix = "core")
public interface CoreConfig {
    String name();

    KafkaConfig kafka();

    Optional<TyreConfig> tyre();
}

• org.acme.KafkaConfig

package org.acme;

import io.smallrye.config.WithName;

public interface KafkaConfig {
    @WithName("bootstrap.servers")
    String[] bootstrapServers();
}

• org.acme.TyreConfig

package org.acme;

import io.smallrye.config.WithName;

import java.util.Optional;

public interface TyreConfig {
    String form();

    String color();

    @WithName("size.width")
    Optional<Double> width();
}

• org.acme.ExampleResource

package org.acme;

import jakarta.enterprise.event.Observes;
import jakarta.enterprise.event.Startup;
import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.core.MediaType;

@Path("/hello")
public class ExampleResource {
    @Inject
    private CoreConfig config;

    public void init(@Observes Startup pStart) {
        System.err.println(config.name());
        System.err.println(config.kafka().bootstrapServers());
    }

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String hello() {
        return "Hello from RESTEasy Reactive";
    }
}

Output of uname -a or ver

OS name: "windows 11", version: "10.0", arch: "amd64", family: "windows"

Output of java -version

java version "17.0.5" 2022-10-18 LTS Java(TM) SE Runtime Environment (build 17.0.5+9-LTS-191) Java HotSpot(TM) 64-Bit Server VM (build 17.0.5+9-LTS-191, mixed mode, sharing)

GraalVM version (if different from Java)

No response

Quarkus version or git rev

3.0.1.Final

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

Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d)

Additional information

No response

[gsmet]

@radcortez could you have a look?

[radcortez]

This is the same issue as smallrye/smallrye-config#929.

Please, don't use a @WithName with a dotted name until this is fixed.