Moved API classes to their own module.

api/pom.xml

@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+ ~  Copyright 2017 Red Hat, Inc.
+ ~
+ ~  Licensed under the Apache License, Version 2.0 (the "License");
+ ~  you may not use this file except in compliance with the License.
+ ~  You may obtain a copy of the License at
+ ~
+ ~    http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~  Unless required by applicable law or agreed to in writing, software
+ ~  distributed under the License is distributed on an "AS IS" BASIS,
+ ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ~  See the License for the specific language governing permissions and
+ ~  limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>io.smallrye.config</groupId>
+    <artifactId>smallrye-config-parent</artifactId>
+    <version>1.7.1-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>smallrye-config-api</artifactId>
+
+  <name>SmallRye: MicroProfile Config API</name>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.eclipse.microprofile.config</groupId>
+      <artifactId>microprofile-config-api</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>jakarta.enterprise</groupId>
+      <artifactId>jakarta.enterprise.cdi-api</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>jakarta.annotation</groupId>
+      <artifactId>jakarta.annotation-api</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>io.smallrye.common</groupId>
+      <artifactId>smallrye-common-annotation</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+        <configuration>
+          <redirectTestOutputToFile>true</redirectTestOutputToFile>
+          <enableAssertions>true</enableAssertions>
+          <argLine>-Xmx512m</argLine>
+          <forkMode>once</forkMode>
+          <trimStackTrace>false</trimStackTrace>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
+  <profiles>
+    <profile>
+      <id>coverage</id>
+      <properties>
+        <argLine>@{jacocoArgLine}</argLine>
+      </properties>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.jacoco</groupId>
+            <artifactId>jacoco-maven-plugin</artifactId>
+          </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-surefire-plugin</artifactId>
+            <configuration>
+              <argLine>@{jacocoArgLine} -Xmx512m</argLine>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+
+</project>

implementation/src/main/java/io/smallrye/config/ConfigSourceInterceptor.java → api/src/main/java/io/smallrye/config/ConfigSourceInterceptor.java

@@ -4,6 +4,8 @@
 import java.util.Collections;
 import java.util.Iterator;
 
+import io.smallrye.common.annotation.Experimental;
+
 /**
  * The ConfigSourceInterceptor allows to intercept the resolution of a configuration name before the
  * configuration value is resolved by the Config and before any conversion taking place. It can also intercept
@@ -26,6 +28,7 @@
  * of {@code io.smallrye.config.Priorities#APPLICATION} is assumed. If multiple interceptors are registered with the
  * same priority, then their execution order may be non deterministic.
  */
+@Experimental("Interceptor API to intercept resolution of a configuration name")
 public interface ConfigSourceInterceptor extends Serializable {
     /**
      * Intercept the resolution of a configuration name and either return the corresponding {@link ConfigValue} or a

implementation/src/main/java/io/smallrye/config/ConfigSourceInterceptorContext.java → api/src/main/java/io/smallrye/config/ConfigSourceInterceptorContext.java

@@ -3,10 +3,13 @@
 import java.io.Serializable;
 import java.util.Iterator;
 
+import io.smallrye.common.annotation.Experimental;
+
 /**
  * Exposes contextual information about the intercepted invocation of {@link ConfigSourceInterceptor}. This allows
  * implementers to control the behavior of the invocation chain.
  */
+@Experimental("Interceptor API to intercept resolution of a configuration name")
 public interface ConfigSourceInterceptorContext extends Serializable {
     /**
      * Proceeds to the next interceptor in the chain.

implementation/src/main/java/io/smallrye/config/ConfigSourceInterceptorFactory.java → api/src/main/java/io/smallrye/config/ConfigSourceInterceptorFactory.java

@@ -2,6 +2,8 @@
 
 import java.util.OptionalInt;
 
+import io.smallrye.common.annotation.Experimental;
+
 /**
  * This ConfigSourceInterceptorFactory allows to initialize a {@link ConfigSourceInterceptor}, with access to the
  * current {@link ConfigSourceInterceptorContext}.
@@ -12,12 +14,13 @@
  * initialized.
  * <p>
  *
- * Instances of this interface will be {@link SmallRyeConfigBuilder#addDiscoveredInterceptors()} via the
+ * Instances of this interface will be discovered by {@code SmallRyeConfigBuilder#addDiscoveredInterceptors()} via the
  * {@link java.util.ServiceLoader} mechanism and can be registered by providing a
  * {@code META-INF/services/io.smallrye.config.ConfigSourceInterceptorFactory}
  * {@linkplain ClassLoader#getResource(String) resource} which contains the fully qualified class name of the
  * custom {@code ConfigSourceProvider} implementation.
  */
+@Experimental("Interceptor API to intercept resolution of a configuration name")
 public interface ConfigSourceInterceptorFactory {
     /**
      * The default priority value, {@link Priorities#APPLICATION}.

implementation/src/main/java/io/smallrye/config/ConfigValue.java → api/src/main/java/io/smallrye/config/ConfigValue.java

@@ -2,6 +2,8 @@
 
 import java.util.Objects;
 
+import io.smallrye.common.annotation.Experimental;
+
 /**
  * The ConfigValue is a metadata object that holds additional information after the lookup of a configuration.
  * <p>
@@ -14,6 +16,7 @@
  * This is used together with {@link ConfigValueConfigSource} and {@link ConfigSourceInterceptor} to expose the
  * Configuration lookup metadata.
  */
+@Experimental("Extension to the original ConfigSource to allow retrieval of additional metadata on config lookup")
 public class ConfigValue {
     private final String name;
     private final String value;

implementation/src/main/java/io/smallrye/config/ConfigValueConfigSource.java → api/src/main/java/io/smallrye/config/ConfigValueConfigSource.java

@@ -5,6 +5,8 @@
 
 import org.eclipse.microprofile.config.spi.ConfigSource;
 
+import io.smallrye.common.annotation.Experimental;
+
 /**
  * Extends the original {@link ConfigSource} to expose methods that return a {@link ConfigValue}. The
  * {@link ConfigValue} allows to retrieve additional metadata associated with the configuration resolution.
@@ -17,6 +19,7 @@
  *
  * Ideally, this should move the the MicroProfile Config API, once the concept is well-proven.
  */
+@Experimental("Extension to the original ConfigSource to allow retrieval of additional metadata on config lookup")
 public interface ConfigValueConfigSource extends ConfigSource {
     /**
      * Return the {@link ConfigValue} for the specified property in this configuration source.

implementation/src/main/java/io/smallrye/config/ConfigValueMapView.java → api/src/main/java/io/smallrye/config/ConfigValueMapView.java

@@ -9,12 +9,15 @@
 import java.util.Map;
 import java.util.Set;
 
+import io.smallrye.common.annotation.Experimental;
+
 /**
  * The ConfigValueMapView is view over a Map of String configs names and ConfigValue value.
  * <p>
  *
  * Use this to wrap the ConfigValue map and expose it where a Map of String name and String value is required.
  */
+@Experimental("Extension to the original ConfigSource to allow retrieval of additional metadata on config lookup")
 public final class ConfigValueMapView extends AbstractMap<String, String> {
     private final Map<String, ConfigValue> delegate;
 

implementation/src/main/java/io/smallrye/config/Priorities.java → api/src/main/java/io/smallrye/config/Priorities.java

@@ -1,9 +1,12 @@
 package io.smallrye.config;
 
+import io.smallrye.common.annotation.Experimental;
+
 /**
  * A collection of built-in priority constants for {@link ConfigSourceInterceptor} that are supposed to be
  * ordered based on their {@code javax.annotation.Priority} class-level annotation.
  */
+@Experimental("Interceptor API to intercept resolution of a configuration name")
 public final class Priorities {
     /**
      * Range for early interceptors defined by Platform specifications.

implementation/src/test/java/io/smallrye/config/ConfigValueMapViewTest.java → api/src/test/java/io/smallrye/config/ConfigValueMapViewTest.java

@@ -5,7 +5,6 @@
 import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 
-import java.io.IOException;
 import java.util.AbstractMap;
 import java.util.Collection;
 import java.util.HashMap;
@@ -99,20 +98,6 @@ public void values() {
         assertThrows(UnsupportedOperationException.class, () -> values.remove("1234"));
     }
 
-    @Test
-    public void configSourceMap() throws IOException {
-        final ConfigValuePropertiesConfigSource configSource = new ConfigValuePropertiesConfigSource(
-                ConfigValueMapViewTest.class.getResource("/config-values.properties"));
-        final Map<String, String> properties = configSource.getProperties();
-
-        assertEquals("abc", properties.get("my.prop"));
-        assertEquals("abc", properties.get("my.prop"));
-        assertThrows(UnsupportedOperationException.class, () -> properties.remove("x"));
-        assertThrows(UnsupportedOperationException.class, () -> properties.put("x", "x"));
-        assertThrows(UnsupportedOperationException.class, () -> properties.putAll(new HashMap<>()));
-        assertThrows(UnsupportedOperationException.class, properties::clear);
-    }
-
     private ConfigValueMapView sampleMap() {
         final Map<String, ConfigValue> configValueMap = new HashMap<>();
         configValueMap.put("my.prop", ConfigValue.builder().withName("my.prop").withValue("1234").build());

implementation/pom.xml

@@ -45,6 +45,10 @@
       <artifactId>jakarta.annotation-api</artifactId>
       <scope>provided</scope>
     </dependency>
+    <dependency>
+      <groupId>io.smallrye.config</groupId>
+      <artifactId>smallrye-config-api</artifactId>
+    </dependency>
     <dependency>
       <groupId>io.smallrye.config</groupId>
       <artifactId>smallrye-config-common</artifactId>

implementation/src/main/java/io/smallrye/config/SmallRyeConfig.java

@@ -314,7 +314,8 @@ private static class ConfigSources implements Serializable {
         ConfigSources(final List<ConfigSource> sources, final ConfigSources configSources) {
             sources.sort(CONFIG_SOURCE_COMPARATOR);
 
-            SmallRyeConfigSourceInterceptorContext current = new SmallRyeConfigSourceInterceptorContext(EMPTY, null);
+            SmallRyeConfigSourceInterceptorContext current = new SmallRyeConfigSourceInterceptorContext(
+                    EMPTY, null);
 
             for (int i = sources.size() - 1; i >= 0; i--) {
                 current = new SmallRyeConfigSourceInterceptorContext(configSourceInterceptor(sources.get(i)), current);

implementation/src/test/java/io/smallrye/config/ConfigValueMapStringViewTest.java

@@ -21,7 +21,7 @@ public void size() {
 
     @Test
     public void isEmpty() {
-        assertTrue(new ConfigValueMapView(new HashMap<>()).isEmpty());
+        assertTrue(new ConfigValueMapStringView(new HashMap<>(), "test", 1).isEmpty());
     }
 
     @Test

implementation/src/test/java/io/smallrye/config/ConfigValuePropertiesConfigSourceTest.java

@@ -1,5 +1,12 @@
 package io.smallrye.config;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThrows;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
 import org.eclipse.microprofile.config.Config;
 import org.junit.Assert;
 import org.junit.Test;
@@ -13,6 +20,20 @@ public void interceptor() throws Exception {
         Assert.assertEquals("20", config.getValue("my.prop.20", String.class));
     }
 
+    @Test
+    public void configSourceMap() throws IOException {
+        final ConfigValuePropertiesConfigSource configSource = new ConfigValuePropertiesConfigSource(
+                ConfigValuePropertiesConfigSourceTest.class.getResource("/config-values.properties"));
+        final Map<String, String> properties = configSource.getProperties();
+
+        assertEquals("abc", properties.get("my.prop"));
+        assertEquals("abc", properties.get("my.prop"));
+        assertThrows(UnsupportedOperationException.class, () -> properties.remove("x"));
+        assertThrows(UnsupportedOperationException.class, () -> properties.put("x", "x"));
+        assertThrows(UnsupportedOperationException.class, () -> properties.putAll(new HashMap<>()));
+        assertThrows(UnsupportedOperationException.class, properties::clear);
+    }
+
     private static Config buildConfig() throws Exception {
         return new SmallRyeConfigBuilder()
                 .addDefaultSources()

pom.xml

@@ -65,6 +65,7 @@
 
   <modules>
     <module>common</module>
+    <module>api</module>
     <module>implementation</module>
     <module>sources/hocon</module>
     <module>sources/file-system</module>
@@ -115,6 +116,11 @@
       </dependency>
 
       <!-- External SmallRye Dependencies -->
+      <dependency>
+        <groupId>io.smallrye.common</groupId>
+        <artifactId>smallrye-common-annotation</artifactId>
+        <version>${version.smallrye.common}</version>
+      </dependency>
       <dependency>
         <groupId>io.smallrye.common</groupId>
         <artifactId>smallrye-common-expression</artifactId>
@@ -127,6 +133,11 @@
       </dependency>
 
       <!-- Dependencies provided by the project -->
+      <dependency>
+        <groupId>io.smallrye.config</groupId>
+        <artifactId>smallrye-config-api</artifactId>
+        <version>${project.version}</version>
+      </dependency>
       <dependency>
         <groupId>io.smallrye.config</groupId>
         <artifactId>smallrye-config-common</artifactId>