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;
023
024import org.apache.maven.resolver.examples.util.Booter;
025import org.apache.maven.resolver.examples.util.ConsoleDependencyGraphDumper;
026import org.eclipse.aether.DefaultRepositorySystemSession;
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.PreorderNodeListGenerator;
044import org.eclipse.aether.util.repository.AuthenticationBuilder;
045
046/**
047 */
048public class Resolver {
049    private final String remoteRepository;
050
051    private final RepositorySystem repositorySystem;
052
053    private final LocalRepository localRepository;
054
055    public Resolver(String factory, String remoteRepository, String localRepository) {
056        this.remoteRepository = remoteRepository;
057        this.repositorySystem = Booter.newRepositorySystem(factory);
058        this.localRepository = new LocalRepository(localRepository);
059    }
060
061    private RepositorySystemSession newSession() {
062        DefaultRepositorySystemSession session = Booter.newRepositorySystemSession(repositorySystem);
063        session.setLocalRepositoryManager(repositorySystem.newLocalRepositoryManager(session, localRepository));
064        session.setTransferListener(null);
065        session.setRepositoryListener(null);
066        return session;
067    }
068
069    public ResolverResult resolve(String groupId, String artifactId, String version)
070            throws DependencyResolutionException {
071        RepositorySystemSession session = newSession();
072        Dependency dependency = new Dependency(new DefaultArtifact(groupId, artifactId, "", "jar", version), "runtime");
073        RemoteRepository central = new RemoteRepository.Builder("central", "default", remoteRepository).build();
074
075        CollectRequest collectRequest = new CollectRequest();
076        collectRequest.setRoot(dependency);
077        collectRequest.addRepository(central);
078
079        DependencyRequest dependencyRequest = new DependencyRequest();
080        dependencyRequest.setCollectRequest(collectRequest);
081
082        DependencyNode rootNode =
083                repositorySystem.resolveDependencies(session, dependencyRequest).getRoot();
084
085        StringBuilder dump = new StringBuilder();
086        displayTree(rootNode, dump);
087        System.out.println("Tree:");
088        System.out.println(dump);
089
090        PreorderNodeListGenerator nlg = new PreorderNodeListGenerator();
091        rootNode.accept(nlg);
092
093        return new ResolverResult(rootNode, nlg.getFiles(), nlg.getClassPath());
094    }
095
096    public void install(Artifact artifact, Artifact pom) throws InstallationException {
097        RepositorySystemSession session = newSession();
098
099        InstallRequest installRequest = new InstallRequest();
100        installRequest.addArtifact(artifact).addArtifact(pom);
101
102        repositorySystem.install(session, installRequest);
103    }
104
105    public void deploy(Artifact artifact, Artifact pom, String remoteRepository) throws DeploymentException {
106        RepositorySystemSession session = newSession();
107
108        Authentication auth = new AuthenticationBuilder()
109                .addUsername("admin")
110                .addPassword("admin123")
111                .build();
112        RemoteRepository nexus = new RemoteRepository.Builder("nexus", "default", remoteRepository)
113                .setAuthentication(auth)
114                .build();
115
116        DeployRequest deployRequest = new DeployRequest();
117        deployRequest.addArtifact(artifact).addArtifact(pom);
118        deployRequest.setRepository(nexus);
119
120        repositorySystem.deploy(session, deployRequest);
121    }
122
123    private void displayTree(DependencyNode node, StringBuilder sb) {
124        ByteArrayOutputStream os = new ByteArrayOutputStream(1024);
125        node.accept(new ConsoleDependencyGraphDumper(new PrintStream(os)));
126        sb.append(os.toString());
127    }
128}