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.DefaultRepositorySystemSession;
024import org.eclipse.aether.RepositorySystem;
025import org.eclipse.aether.artifact.Artifact;
026import org.eclipse.aether.artifact.DefaultArtifact;
027import org.eclipse.aether.collection.CollectRequest;
028import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
029import org.eclipse.aether.resolution.ArtifactDescriptorResult;
030import org.eclipse.aether.util.graph.manager.DependencyManagerUtils;
031import org.eclipse.aether.util.graph.transformer.ConflictResolver;
032import org.eclipse.aether.util.listener.ChainedRepositoryListener;
033
034/**
035 * Example of building reverse dependency tree using custom {@link ReverseTreeRepositoryListener}.
036 */
037public class ReverseDependencyTree {
038
039    /**
040     * Main.
041     * @param args
042     * @throws Exception
043     */
044    public static void main(String[] args) throws Exception {
045        System.out.println("------------------------------------------------------------");
046        System.out.println(ReverseDependencyTree.class.getSimpleName());
047
048        RepositorySystem system = Booter.newRepositorySystem(Booter.selectFactory(args));
049
050        DefaultRepositorySystemSession session = Booter.newRepositorySystemSession(system);
051
052        // install the listener into session
053        session.setRepositoryListener(
054                new ChainedRepositoryListener(session.getRepositoryListener(), new ReverseTreeRepositoryListener()));
055
056        session.setConfigProperty(ConflictResolver.CONFIG_PROP_VERBOSE, true);
057        session.setConfigProperty(DependencyManagerUtils.CONFIG_PROP_VERBOSE, true);
058
059        Artifact artifact = new DefaultArtifact("org.apache.maven:maven-resolver-provider:3.6.1");
060
061        ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest();
062        descriptorRequest.setArtifact(artifact);
063        descriptorRequest.setRepositories(Booter.newRepositories(system, session));
064        ArtifactDescriptorResult descriptorResult = system.readArtifactDescriptor(session, descriptorRequest);
065
066        CollectRequest collectRequest = new CollectRequest();
067        collectRequest.setRequestContext("demo");
068        collectRequest.setRootArtifact(descriptorResult.getArtifact());
069        collectRequest.setDependencies(descriptorResult.getDependencies());
070        collectRequest.setManagedDependencies(descriptorResult.getManagedDependencies());
071        collectRequest.setRepositories(descriptorRequest.getRepositories());
072
073        system.collectDependencies(session, collectRequest);
074
075        // in this demo we are not interested in collect result,
076        // as all the "demo work" is done by installed ReverseTreeRepositoryListener
077    }
078}