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.resolver;
020
021import java.io.ByteArrayOutputStream;
022import java.io.PrintStream;
023import java.nio.charset.StandardCharsets;
024import java.nio.file.Path;
025
026import org.apache.maven.resolver.examples.util.Booter;
027import org.eclipse.aether.RepositorySystem;
028import org.eclipse.aether.RepositorySystemSession;
029import org.eclipse.aether.artifact.Artifact;
030import org.eclipse.aether.artifact.DefaultArtifact;
031import org.eclipse.aether.collection.CollectRequest;
032import org.eclipse.aether.deployment.DeployRequest;
033import org.eclipse.aether.deployment.DeploymentException;
034import org.eclipse.aether.graph.Dependency;
035import org.eclipse.aether.graph.DependencyNode;
036import org.eclipse.aether.installation.InstallRequest;
037import org.eclipse.aether.installation.InstallationException;
038import org.eclipse.aether.repository.Authentication;
039import org.eclipse.aether.repository.LocalRepository;
040import org.eclipse.aether.repository.RemoteRepository;
041import org.eclipse.aether.resolution.DependencyRequest;
042import org.eclipse.aether.resolution.DependencyResolutionException;
043import org.eclipse.aether.util.graph.visitor.DependencyGraphDumper;
044import org.eclipse.aether.util.graph.visitor.NodeListGenerator;
045import org.eclipse.aether.util.graph.visitor.PreorderDependencyNodeConsumerVisitor;
046import org.eclipse.aether.util.repository.AuthenticationBuilder;
047
048/**
049 */
050public class Resolver {
051    private final String[] args;
052
053    private final String remoteRepository;
054
055    private final RepositorySystem repositorySystem;
056
057    private final LocalRepository localRepository;
058
059    public Resolver(String[] args, String remoteRepository, Path localRepository) {
060        this.args = args;
061        this.remoteRepository = remoteRepository;
062        this.repositorySystem = Booter.newRepositorySystem(Booter.selectFactory(args));
063        this.localRepository = new LocalRepository(localRepository);
064    }
065
066    private RepositorySystemSession newSession() {
067        return Booter.newRepositorySystemSession(repositorySystem, Booter.selectFs(args))
068                .withLocalRepositories(localRepository)
069                .setRepositoryListener(null)
070                .setTransferListener(null)
071                .build();
072    }
073
074    public ResolverResult resolve(String groupId, String artifactId, String version)
075            throws DependencyResolutionException {
076        RepositorySystemSession session = newSession();
077        Dependency dependency = new Dependency(new DefaultArtifact(groupId, artifactId, "", "jar", version), "runtime");
078        RemoteRepository central = new RemoteRepository.Builder("central", "default", remoteRepository).build();
079
080        CollectRequest collectRequest = new CollectRequest();
081        collectRequest.setRoot(dependency);
082        collectRequest.addRepository(central);
083
084        DependencyRequest dependencyRequest = new DependencyRequest();
085        dependencyRequest.setCollectRequest(collectRequest);
086
087        DependencyNode rootNode =
088                repositorySystem.resolveDependencies(session, dependencyRequest).getRoot();
089
090        StringBuilder dump = new StringBuilder();
091        displayTree(rootNode, dump);
092        System.out.println("Tree:");
093        System.out.println(dump);
094
095        NodeListGenerator nlg = new NodeListGenerator();
096        rootNode.accept(new PreorderDependencyNodeConsumerVisitor(nlg));
097
098        return new ResolverResult(rootNode, nlg.getFiles(), nlg.getClassPath());
099    }
100
101    public void install(Artifact artifact, Artifact pom) throws InstallationException {
102        RepositorySystemSession session = newSession();
103
104        InstallRequest installRequest = new InstallRequest();
105        installRequest.addArtifact(artifact).addArtifact(pom);
106
107        repositorySystem.install(session, installRequest);
108    }
109
110    public void deploy(Artifact artifact, Artifact pom, String remoteRepository) throws DeploymentException {
111        RepositorySystemSession session = newSession();
112
113        Authentication auth = new AuthenticationBuilder()
114                .addUsername("admin")
115                .addPassword("admin123")
116                .build();
117        RemoteRepository nexus = new RemoteRepository.Builder("nexus", "default", remoteRepository)
118                .setAuthentication(auth)
119                .build();
120
121        DeployRequest deployRequest = new DeployRequest();
122        deployRequest.addArtifact(artifact).addArtifact(pom);
123        deployRequest.setRepository(nexus);
124
125        repositorySystem.deploy(session, deployRequest);
126    }
127
128    private void displayTree(DependencyNode node, StringBuilder sb) {
129        ByteArrayOutputStream os = new ByteArrayOutputStream(1024);
130        PrintStream ps = new PrintStream(os, true, StandardCharsets.UTF_8);
131        node.accept(new DependencyGraphDumper(ps::println));
132        sb.append(os);
133    }
134}