Convert LocalesBuildTimeConfig to an interface

core/deployment/src/main/java/io/quarkus/deployment/configuration/RunTimeConfigurationGenerator.java

@@ -582,6 +582,22 @@ private Set<String> getRegisteredRoots(ConfigPhase configPhase) {
                     registeredRoots.add(root.getName());
                 }
             }
+
+            if (BUILD_AND_RUN_TIME_FIXED.equals(configPhase)) {
+                for (ConfigClassWithPrefix mapping : buildTimeConfigResult.getBuildTimeRunTimeMappings()) {
+                    registeredRoots.add(mapping.getPrefix());
+                }
+            }
+
+            if (RUN_TIME.equals(configPhase)) {
+                for (ConfigClassWithPrefix mapping : buildTimeConfigResult.getBuildTimeRunTimeMappings()) {
+                    registeredRoots.add(mapping.getPrefix());
+                }
+                for (ConfigClassWithPrefix mapping : buildTimeConfigResult.getRunTimeMappings()) {
+                    registeredRoots.add(mapping.getPrefix());
+                }
+            }
+
             return registeredRoots;
         }
 

core/deployment/src/main/java/io/quarkus/deployment/steps/LocaleProcessor.java

@@ -80,9 +80,9 @@ public boolean getAsBoolean() {
                     (nativeConfig.userCountry().isPresent()
                             && !Locale.getDefault().getCountry().equals(nativeConfig.userCountry().get()))
                     ||
-                    !Locale.getDefault().equals(localesBuildTimeConfig.defaultLocale)
+                    !Locale.getDefault().equals(localesBuildTimeConfig.defaultLocale())
                     ||
-                    localesBuildTimeConfig.locales.stream().anyMatch(l -> !Locale.getDefault().equals(l));
+                    localesBuildTimeConfig.locales().stream().anyMatch(l -> !Locale.getDefault().equals(l));
         }
     }
 
@@ -95,7 +95,7 @@ public boolean getAsBoolean() {
      *         effectively LocalesBuildTimeConfig.DEFAULT_LANGUAGE if none of the aforementioned is set.
      */
     public static String nativeImageUserLanguage(NativeConfig nativeConfig, LocalesBuildTimeConfig localesBuildTimeConfig) {
-        String language = localesBuildTimeConfig.defaultLocale.getLanguage();
+        String language = localesBuildTimeConfig.defaultLocale().getLanguage();
         if (nativeConfig.userLanguage().isPresent()) {
             log.warn(DEPRECATED_USER_LANGUAGE_WARNING);
             // The deprecated option takes precedence for users who are already using it.
@@ -114,7 +114,7 @@ public static String nativeImageUserLanguage(NativeConfig nativeConfig, LocalesB
      *         set.
      */
     public static String nativeImageUserCountry(NativeConfig nativeConfig, LocalesBuildTimeConfig localesBuildTimeConfig) {
-        String country = localesBuildTimeConfig.defaultLocale.getCountry();
+        String country = localesBuildTimeConfig.defaultLocale().getCountry();
         if (nativeConfig.userCountry().isPresent()) {
             log.warn(DEPRECATED_USER_COUNTRY_WARNING);
             // The deprecated option takes precedence for users who are already using it.
@@ -133,15 +133,15 @@ public static String nativeImageUserCountry(NativeConfig nativeConfig, LocalesBu
      */
     public static String nativeImageIncludeLocales(NativeConfig nativeConfig, LocalesBuildTimeConfig localesBuildTimeConfig) {
         // We start with what user sets as needed locales
-        final Set<Locale> additionalLocales = new HashSet<>(localesBuildTimeConfig.locales);
+        final Set<Locale> additionalLocales = new HashSet<>(localesBuildTimeConfig.locales());
 
         if (additionalLocales.contains(Locale.ROOT)) {
             return "all";
         }
 
         // We subtract what we already declare for native-image's user.language or user.country.
         // Note the deprecated options still count.
-        additionalLocales.remove(localesBuildTimeConfig.defaultLocale);
+        additionalLocales.remove(localesBuildTimeConfig.defaultLocale());
         if (nativeConfig.userCountry().isPresent() && nativeConfig.userLanguage().isPresent()) {
             additionalLocales.remove(new Locale(nativeConfig.userLanguage().get(), nativeConfig.userCountry().get()));
         } else if (nativeConfig.userLanguage().isPresent()) {

core/runtime/src/main/java/io/quarkus/runtime/LocalesBuildTimeConfig.java

@@ -3,16 +3,19 @@
 import java.util.Locale;
 import java.util.Set;
 
-import io.quarkus.runtime.annotations.ConfigItem;
+import io.quarkus.runtime.annotations.ConfigDocDefault;
 import io.quarkus.runtime.annotations.ConfigPhase;
 import io.quarkus.runtime.annotations.ConfigRoot;
+import io.smallrye.config.ConfigMapping;
+import io.smallrye.config.WithDefault;
 
-@ConfigRoot(name = ConfigItem.PARENT, phase = ConfigPhase.BUILD_AND_RUN_TIME_FIXED)
-public class LocalesBuildTimeConfig {
+@ConfigRoot(phase = ConfigPhase.BUILD_AND_RUN_TIME_FIXED)
+@ConfigMapping(prefix = "quarkus")
+public interface LocalesBuildTimeConfig {
 
     // We set to en as the default language when all else fails since this is what the JDK does as well
-    public static final String DEFAULT_LANGUAGE = "${user.language:en}";
-    public static final String DEFAULT_COUNTRY = "${user.country:}";
+    String DEFAULT_LANGUAGE = "${user.language:en}";
+    String DEFAULT_COUNTRY = "${user.country:}";
 
     /**
      * The set of supported locales that can be consumed by the extensions.
@@ -27,9 +30,9 @@ public class LocalesBuildTimeConfig {
      * A special string "all" is translated as ROOT Locale and then used in native-image
      * to include all locales. Image size penalty applies.
      */
-    @ConfigItem(defaultValue = DEFAULT_LANGUAGE + "-"
-            + DEFAULT_COUNTRY, defaultValueDocumentation = "Set containing the build system locale")
-    public Set<Locale> locales;
+    @WithDefault(DEFAULT_LANGUAGE + "-" + DEFAULT_COUNTRY)
+    @ConfigDocDefault("Set containing the build system locale")
+    Set<Locale> locales();
 
     /**
      * Default locale that can be consumed by the extensions.
@@ -41,6 +44,7 @@ public class LocalesBuildTimeConfig {
      * Native-image build uses this property to derive {@code user.language} and {@code user.country} for the application's
      * runtime.
      */
-    @ConfigItem(defaultValue = DEFAULT_LANGUAGE + "-" + DEFAULT_COUNTRY, defaultValueDocumentation = "Build system locale")
-    public Locale defaultLocale;
+    @WithDefault(DEFAULT_LANGUAGE + "-" + DEFAULT_COUNTRY)
+    @ConfigDocDefault("Build system locale")
+    Locale defaultLocale();
 }

extensions/hibernate-validator/runtime/src/main/java/io/quarkus/hibernate/validator/runtime/HibernateValidatorRecorder.java

@@ -83,9 +83,9 @@ public void created(BeanContainer container) {
                 configuration.builtinConstraints(detectedBuiltinConstraints)
                         .initializeBeanMetaData(classesToBeValidated)
                         // Locales, Locale ROOT means all locales in this setting.
-                        .locales(localesBuildTimeConfig.locales.contains(Locale.ROOT) ? Set.of(Locale.getAvailableLocales())
-                                : localesBuildTimeConfig.locales)
-                        .defaultLocale(localesBuildTimeConfig.defaultLocale)
+                        .locales(localesBuildTimeConfig.locales().contains(Locale.ROOT) ? Set.of(Locale.getAvailableLocales())
+                                : localesBuildTimeConfig.locales())
+                        .defaultLocale(localesBuildTimeConfig.defaultLocale())
                         .beanMetaDataClassNormalizer(new ArcProxyBeanMetaDataClassNormalizer());
 
                 if (hibernateValidatorBuildTimeConfig.expressionLanguage().constraintExpressionFeatureLevel().isPresent()) {

extensions/qute/deployment/src/main/java/io/quarkus/qute/deployment/MessageBundleProcessor.java

@@ -1408,7 +1408,7 @@ private String getDefaultLocale(AnnotationInstance bundleAnnotation, LocalesBuil
         AnnotationValue localeValue = bundleAnnotation.value(BUNDLE_LOCALE);
         String defaultLocale;
         if (localeValue == null || localeValue.asString().equals(MessageBundle.DEFAULT_LOCALE)) {
-            defaultLocale = locales.defaultLocale.toLanguageTag();
+            defaultLocale = locales.defaultLocale().toLanguageTag();
         } else {
             defaultLocale = localeValue.asString();
         }

extensions/qute/runtime/src/main/java/io/quarkus/qute/runtime/EngineProducer.java

@@ -93,7 +93,7 @@ public EngineProducer(QuteContext context, QuteConfig config, QuteRuntimeConfig
         this.templateRoots = context.getTemplateRoots();
         this.tags = context.getTags();
         this.templatePathExclude = config.templatePathExclude;
-        this.defaultLocale = locales.defaultLocale;
+        this.defaultLocale = locales.defaultLocale();
         this.defaultCharset = config.defaultCharset;
         this.container = Arc.container();