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19 package org.apache.maven.resolver.examples.resolver;
20
21 import java.io.ByteArrayOutputStream;
22 import java.io.PrintStream;
23
24 import org.apache.maven.resolver.examples.util.Booter;
25 import org.apache.maven.resolver.examples.util.ConsoleDependencyGraphDumper;
26 import org.eclipse.aether.DefaultRepositorySystemSession;
27 import org.eclipse.aether.RepositorySystem;
28 import org.eclipse.aether.RepositorySystemSession;
29 import org.eclipse.aether.artifact.Artifact;
30 import org.eclipse.aether.artifact.DefaultArtifact;
31 import org.eclipse.aether.collection.CollectRequest;
32 import org.eclipse.aether.deployment.DeployRequest;
33 import org.eclipse.aether.deployment.DeploymentException;
34 import org.eclipse.aether.graph.Dependency;
35 import org.eclipse.aether.graph.DependencyNode;
36 import org.eclipse.aether.installation.InstallRequest;
37 import org.eclipse.aether.installation.InstallationException;
38 import org.eclipse.aether.repository.Authentication;
39 import org.eclipse.aether.repository.LocalRepository;
40 import org.eclipse.aether.repository.RemoteRepository;
41 import org.eclipse.aether.resolution.DependencyRequest;
42 import org.eclipse.aether.resolution.DependencyResolutionException;
43 import org.eclipse.aether.util.graph.visitor.PreorderNodeListGenerator;
44 import org.eclipse.aether.util.repository.AuthenticationBuilder;
45
46
47
48 public class Resolver {
49 private final String remoteRepository;
50
51 private final RepositorySystem repositorySystem;
52
53 private final LocalRepository localRepository;
54
55 public Resolver(String factory, String remoteRepository, String localRepository) {
56 this.remoteRepository = remoteRepository;
57 this.repositorySystem = Booter.newRepositorySystem(factory);
58 this.localRepository = new LocalRepository(localRepository);
59 }
60
61 private RepositorySystemSession newSession() {
62 DefaultRepositorySystemSession session = Booter.newRepositorySystemSession(repositorySystem);
63 session.setLocalRepositoryManager(repositorySystem.newLocalRepositoryManager(session, localRepository));
64 session.setTransferListener(null);
65 session.setRepositoryListener(null);
66 return session;
67 }
68
69 public ResolverResult resolve(String groupId, String artifactId, String version)
70 throws DependencyResolutionException {
71 RepositorySystemSession session = newSession();
72 Dependency dependency = new Dependency(new DefaultArtifact(groupId, artifactId, "", "jar", version), "runtime");
73 RemoteRepository central = new RemoteRepository.Builder("central", "default", remoteRepository).build();
74
75 CollectRequest collectRequest = new CollectRequest();
76 collectRequest.setRoot(dependency);
77 collectRequest.addRepository(central);
78
79 DependencyRequest dependencyRequest = new DependencyRequest();
80 dependencyRequest.setCollectRequest(collectRequest);
81
82 DependencyNode rootNode =
83 repositorySystem.resolveDependencies(session, dependencyRequest).getRoot();
84
85 StringBuilder dump = new StringBuilder();
86 displayTree(rootNode, dump);
87 System.out.println("Tree:");
88 System.out.println(dump);
89
90 PreorderNodeListGenerator nlg = new PreorderNodeListGenerator();
91 rootNode.accept(nlg);
92
93 return new ResolverResult(rootNode, nlg.getFiles(), nlg.getClassPath());
94 }
95
96 public void install(Artifact artifact, Artifact pom) throws InstallationException {
97 RepositorySystemSession session = newSession();
98
99 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 }