001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.maven.resolver.examples;
020
021import org.apache.maven.resolver.examples.util.Booter;
022import org.apache.maven.resolver.examples.util.ReverseTreeRepositoryListener;
023import org.eclipse.aether.RepositorySystem;
024import org.eclipse.aether.RepositorySystemSession.CloseableSession;
025import org.eclipse.aether.RepositorySystemSession.SessionBuilder;
026import org.eclipse.aether.artifact.Artifact;
027import org.eclipse.aether.artifact.DefaultArtifact;
028import org.eclipse.aether.collection.CollectRequest;
029import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
030import org.eclipse.aether.resolution.ArtifactDescriptorResult;
031import org.eclipse.aether.util.graph.manager.DependencyManagerUtils;
032import org.eclipse.aether.util.graph.transformer.ConflictResolver;
033import org.eclipse.aether.util.listener.ChainedRepositoryListener;
034
035/**
036 * Example of building reverse dependency tree using custom {@link ReverseTreeRepositoryListener}.
037 */
038public class ReverseDependencyTree {
039
040    /**
041     * Main.
042     * @param args
043     * @throws Exception
044     */
045    public static void main(String[] args) throws Exception {
046        System.out.println("------------------------------------------------------------");
047        System.out.println(ReverseDependencyTree.class.getSimpleName());
048
049        try (RepositorySystem system = Booter.newRepositorySystem(Booter.selectFactory(args))) {
050            SessionBuilder sessionBuilder = Booter.newRepositorySystemSession(system);
051            try (CloseableSession session = sessionBuilder.build()) {
052                sessionBuilder.setRepositoryListener(new ChainedRepositoryListener(
053                        session.getRepositoryListener(), new ReverseTreeRepositoryListener()));
054            }
055            sessionBuilder.setConfigProperty(ConflictResolver.CONFIG_PROP_VERBOSE, true);
056            sessionBuilder.setConfigProperty(DependencyManagerUtils.CONFIG_PROP_VERBOSE, true);
057            try (CloseableSession session = sessionBuilder.build()) {
058                Artifact artifact = new DefaultArtifact("org.apache.maven:maven-resolver-provider:3.6.1");
059
060                ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest();
061                descriptorRequest.setArtifact(artifact);
062                descriptorRequest.setRepositories(Booter.newRepositories(system, session));
063                ArtifactDescriptorResult descriptorResult = system.readArtifactDescriptor(session, descriptorRequest);
064
065                CollectRequest collectRequest = new CollectRequest();
066                collectRequest.setRequestContext("demo");
067                collectRequest.setRootArtifact(descriptorResult.getArtifact());
068                collectRequest.setDependencies(descriptorResult.getDependencies());
069                collectRequest.setManagedDependencies(descriptorResult.getManagedDependencies());
070                collectRequest.setRepositories(descriptorRequest.getRepositories());
071
072                system.collectDependencies(session, collectRequest);
073
074                // in this demo we are not interested in collect result,
075                // as all the "demo work" is done by installed ReverseTreeRepositoryListener
076            }
077        }
078    }
079}