[MNG-8588] Add activated profiles to Project interface

api/maven-api-core/src/main/java/org/apache/maven/api/Project.java

@@ -20,6 +20,7 @@
 
 import java.nio.file.Path;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 
 import org.apache.maven.api.annotations.Experimental;
@@ -237,4 +238,17 @@ default String getId() {
      */
     @Nonnull
     Optional<Project> getParent();
+
+    /**
+     * Gets the identifiers of all profiles that contributed to this project's effective model. This includes active
+     * profiles from the project's POM and all its parent POMs as well as from external sources like the
+     * {@code settings.xml}. The profile identifiers are grouped by the identifier of their source, e.g.
+     * {@code <groupId>:<artifactId>:<version>} for a POM profile or {@code external} for profiles from the
+     * {@code settings.xml}.
+     *
+     * @return The identifiers of all activated profiles, indexed by the source from which the profiles originated, never
+     *         {@code null}.
+     */
+    @Nonnull
+    Map<String, List<String>> getActivatedProfileIdsBySource();
 }

impl/maven-core/src/main/java/org/apache/maven/internal/impl/DefaultProject.java

@@ -23,6 +23,7 @@
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 
 import org.apache.maven.RepositoryUtils;
@@ -165,6 +166,11 @@ public Optional<Project> getParent() {
         return Optional.ofNullable(session.getProject(parent));
     }
 
+    @Override
+    public Map<String, List<String>> getActivatedProfileIdsBySource() {
+        return project.getInjectedProfileIds();
+    }
+
     @Nonnull
     private DependencyCoordinates toDependency(org.apache.maven.api.model.Dependency dependency) {
         return new DependencyCoordinates() {

impl/maven-core/src/test/java/org/apache/maven/project/DefaultMavenProjectBuilderTest.java

@@ -29,6 +29,7 @@
 import org.apache.maven.artifact.repository.ArtifactRepository;
 import org.apache.maven.impl.InternalSession;
 import org.apache.maven.internal.impl.InternalMavenSession;
+import org.apache.maven.model.Profile;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
@@ -345,6 +346,92 @@ void rereadPom_mng7063() throws Exception {
         assertThat(project.getName(), is("PROJECT NAME"));
     }
 
+    @Test
+    void testActivatedProfileBySource() throws Exception {
+        File testPom = getTestFile("src/test/resources/projects/pom-with-profiles/pom.xml");
+
+        ProjectBuildingRequest request = newBuildingRequest();
+        request.setLocalRepository(getLocalRepository());
+        request.setActiveProfileIds(List.of("profile1"));
+
+        MavenProject project = projectBuilder.build(testPom, request).getProject();
+
+        assertTrue(project.getInjectedProfileIds().keySet().containsAll(List.of("external", project.getId())));
+        assertTrue(project.getInjectedProfileIds().get("external").isEmpty());
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().anyMatch("profile1"::equals));
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().noneMatch("profile2"::equals));
+        assertTrue(
+                project.getInjectedProfileIds().get(project.getId()).stream().noneMatch("active-by-default"::equals));
+    }
+
+    @Test
+    void testActivatedDefaultProfileBySource() throws Exception {
+        File testPom = getTestFile("src/test/resources/projects/pom-with-profiles/pom.xml");
+
+        ProjectBuildingRequest request = newBuildingRequest();
+        request.setLocalRepository(getLocalRepository());
+
+        MavenProject project = projectBuilder.build(testPom, request).getProject();
+
+        assertTrue(project.getInjectedProfileIds().keySet().containsAll(List.of("external", project.getId())));
+        assertTrue(project.getInjectedProfileIds().get("external").isEmpty());
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().noneMatch("profile1"::equals));
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().noneMatch("profile2"::equals));
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().anyMatch("active-by-default"::equals));
+    }
+
+    @Test
+    void testActivatedExternalProfileBySource() throws Exception {
+        File testPom = getTestFile("src/test/resources/projects/pom-with-profiles/pom.xml");
+
+        ProjectBuildingRequest request = newBuildingRequest();
+        request.setLocalRepository(getLocalRepository());
+
+        final Profile externalProfile = new Profile();
+        externalProfile.setId("external-profile");
+        request.addProfile(externalProfile);
+        request.setActiveProfileIds(List.of(externalProfile.getId()));
+
+        MavenProject project = projectBuilder.build(testPom, request).getProject();
+
+        assertTrue(project.getInjectedProfileIds().keySet().containsAll(List.of("external", project.getId())));
+        assertTrue(project.getInjectedProfileIds().get("external").stream().anyMatch("external-profile"::equals));
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().noneMatch("profile1"::equals));
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().noneMatch("profile2"::equals));
+        assertTrue(project.getInjectedProfileIds().get(project.getId()).stream().anyMatch("active-by-default"::equals));
+    }
+
+    @Test
+    void testActivatedProfileIsResolved() throws Exception {
+        File testPom = getTestFile("src/test/resources/projects/pom-with-profiles/pom.xml");
+
+        ProjectBuildingRequest request = newBuildingRequest();
+        request.setLocalRepository(getLocalRepository());
+        request.setActiveProfileIds(List.of("profile1"));
+
+        MavenProject project = projectBuilder.build(testPom, request).getProject();
+
+        assertEquals(1, project.getActiveProfiles().size());
+        assertTrue(project.getActiveProfiles().stream().anyMatch(p -> "profile1".equals(p.getId())));
+        assertTrue(project.getActiveProfiles().stream().noneMatch(p -> "profile2".equals(p.getId())));
+        assertTrue(project.getActiveProfiles().stream().noneMatch(p -> "active-by-default".equals(p.getId())));
+    }
+
+    @Test
+    void testActivatedProfileByDefaultIsResolved() throws Exception {
+        File testPom = getTestFile("src/test/resources/projects/pom-with-profiles/pom.xml");
+
+        ProjectBuildingRequest request = newBuildingRequest();
+        request.setLocalRepository(getLocalRepository());
+
+        MavenProject project = projectBuilder.build(testPom, request).getProject();
+
+        assertEquals(1, project.getActiveProfiles().size());
+        assertTrue(project.getActiveProfiles().stream().noneMatch(p -> "profile1".equals(p.getId())));
+        assertTrue(project.getActiveProfiles().stream().noneMatch(p -> "profile2".equals(p.getId())));
+        assertTrue(project.getActiveProfiles().stream().anyMatch(p -> "active-by-default".equals(p.getId())));
+    }
+
     /**
      * Tests whether external version range parent references are build correctly.
      *

impl/maven-core/src/test/resources/projects/pom-with-profiles/pom.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you 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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>maven</groupId>
+    <artifactId>maven-core</artifactId>
+    <version>2.0-SNAPSHOT</version>
+
+    <name>Maven</name>
+
+    <profiles>
+        <profile>
+            <id>active-by-default</id>
+            <activation>
+                <activeByDefault>true</activeByDefault>
+            </activation>
+        </profile>
+        <profile>
+            <id>profile1</id>
+        </profile>
+        <profile>
+            <id>profile2</id>
+        </profile>
+    </profiles>
+</project>