introduced RepositorySessionDecorator

Signed-off-by: Igor Fedorenko <ifedorenko@apache.org>

maven-core/src/main/java/org/apache/maven/project/DefaultProjectDependenciesResolver.java

@@ -21,6 +21,7 @@ package org.apache.maven.project;
 
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import org.apache.maven.RepositoryUtils;
@@ -66,15 +67,21 @@ public class DefaultProjectDependenciesResolver
     @Requirement
     private RepositorySystem repoSystem;
 
+    @Requirement
+    private List<RepositorySessionDecorator> decorators;
+
     public DependencyResolutionResult resolve( DependencyResolutionRequest request )
         throws DependencyResolutionException
     {
-        RequestTrace trace = RequestTrace.newChild( null, request );
+        final RequestTrace trace = RequestTrace.newChild( null, request );
 
-        DefaultDependencyResolutionResult result = new DefaultDependencyResolutionResult();
+        final DefaultDependencyResolutionResult result = new DefaultDependencyResolutionResult();
 
-        MavenProject project = request.getMavenProject();
+        final MavenProject project = request.getMavenProject();
+        final DependencyFilter filter = request.getResolutionFilter();
         RepositorySystemSession session = request.getRepositorySession();
+        ArtifactTypeRegistry stereotypes = session.getArtifactTypeRegistry();
+
         if ( logger.isDebugEnabled()
             && session.getConfigProperties().get( DependencyManagerUtils.CONFIG_PROP_VERBOSE ) == null )
         {
@@ -82,9 +89,15 @@ public class DefaultProjectDependenciesResolver
             verbose.setConfigProperty( DependencyManagerUtils.CONFIG_PROP_VERBOSE, Boolean.TRUE );
             session = verbose;
         }
-        DependencyFilter filter = request.getResolutionFilter();
 
-        ArtifactTypeRegistry stereotypes = session.getArtifactTypeRegistry();
+        for ( RepositorySessionDecorator decorator : decorators )
+        {
+            RepositorySystemSession decorated = decorator.decorate( project, session );
+            if ( decorated != null )
+            {
+                session = decorated;
+            }
+        }
 
         CollectRequest collect = new CollectRequest();
         collect.setRootArtifact( RepositoryUtils.toArtifact( project.getArtifact() ) );

maven-core/src/main/java/org/apache/maven/project/RepositorySessionDecorator.java

@@ -0,0 +1,36 @@
+package org.apache.maven.project;
+
+/*
+ * 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.
+ */
+
+import org.eclipse.aether.RepositorySystemSession;
+
+/**
+ * Component interface that allows per-project customization of Aether repository system sessions.
+ * 
+ * @since 3.2.4
+ * @provisional This interface is part of work in progress and can be changed or removed without notice.
+ */
+public interface RepositorySessionDecorator
+{
+    /**
+     * Returns possibly {@code null} Aether repository system session to be used to resolve project dependencies.
+     */
+    RepositorySystemSession decorate( MavenProject project, RepositorySystemSession session );
+}