org.eclipse.aether.RepositorySystem Java Examples

@Test
public void testProxyNoRepo() throws Exception {
    RepositorySystem system = Util.newRepositorySystem();
    MavenConfig config = new MavenConfig();
    InputStream stream = MvnSettingsTestCase.class.getClassLoader().
            getResourceAsStream("settings_cli_test_proxy_no_repo.xml");
    File tmp = File.createTempFile("cli_mvn_test", null);
    tmp.deleteOnExit();
    Files.copy(stream, tmp.toPath(), StandardCopyOption.REPLACE_EXISTING);
    config.setSettings(tmp.toPath());
    MavenMvnSettings settings = new MavenMvnSettings(config, system, null);
    assertEquals(3, settings.getRepositories().size());
    for (RemoteRepository remote : settings.getRepositories()) {
        assertNotNull(remote.getProxy());
    }
}
 

/**
 * Calculates the set of transitive dependencies of the passed artifacts.
 * 
 * @param repositoryParameters
 * @param artifacts
 * @param artifactScope
 * @return a list of File locations where the JARs of the dependencies are located in the local file system
 * @throws DependencyResolutionException
 */
public static List<File> getDependencies(final IRepositoryParameters repositoryParameters,
                                         final List<ArtifactItem> artifacts, final ArtifactScope artifactScope)
        throws DependencyResolutionException {
    final RepositorySystem system = repositoryParameters.getRepositorySystem();
    final RepositorySystemSession session = repositoryParameters.getRepositorySystemSession();
    final DependencyFilter classpathFlter = DependencyFilterUtils.classpathFilter(artifactScope.getScopeValue());
    final Set<File> artifactFiles = new HashSet<>();
    for (final ArtifactItem artifactItem : artifacts) {
        Artifact artifact = createDefaultArtifact(artifactItem);
        final CollectRequest collectRequest = new CollectRequest();
        collectRequest.setRoot(new Dependency(artifact, artifactScope.getScopeValue()));
        collectRequest.setRepositories(repositoryParameters.getRemoteRepositories());
        final DependencyRequest dependencyRequest = new DependencyRequest(collectRequest, classpathFlter);
        final DependencyResult dependencyResult = system.resolveDependencies(session, dependencyRequest);
        final List<ArtifactResult> artifactResults = dependencyResult.getArtifactResults();
        for (final ArtifactResult artifactResult : artifactResults) {
            artifactFiles.add(artifactResult.getArtifact().getFile());
        }
    }
    return new ArrayList<>(artifactFiles);
}
 

public static RepositorySystem newRepositorySystem() {
	/*
	 * Aether's components implement org.eclipse.aether.spi.locator.Service
	 * to ease manual wiring and using the prepopulated
	 * DefaultServiceLocator, we only need to register the repository
	 * connector and transporter factories.
	 */
	DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
	locator.addService(RepositoryConnectorFactory.class, BasicRepositoryConnectorFactory.class);
	locator.addService(TransporterFactory.class, FileTransporterFactory.class);
	locator.addService(TransporterFactory.class, HttpTransporterFactory.class);

	locator.setErrorHandler(new DefaultServiceLocator.ErrorHandler() {
		@Override
		public void serviceCreationFailed(Class<?> type, Class<?> impl, Throwable exception) {
			exception.printStackTrace();
		}
	});

	return locator.getService(RepositorySystem.class);
}
 

private static String determineNewestVersion(RepositorySystem repoSystem, RepositorySystemSession repoSession, List<RemoteRepository>[] repos) throws MojoExecutionException {
  String version;VersionRangeRequest rangeRequest = new VersionRangeRequest();
  rangeRequest.setArtifact(new DefaultArtifact(SDK_GROUP_ID + ":" + SDK_ARTIFACT_ID + ":[0,)"));
  for(List<RemoteRepository> repoList : repos) {
    for(RemoteRepository repo : repoList) {
      rangeRequest.addRepository(repo);
    }
  }

  VersionRangeResult rangeResult;
  try {
    rangeResult = repoSystem.resolveVersionRange(repoSession, rangeRequest);
  } catch (VersionRangeResolutionException e) {
    throw new MojoExecutionException("Could not resolve latest version of the App Engine Java SDK", e);
  }

  List<Version> versions = rangeResult.getVersions();

  Collections.sort(versions);

  Version newest = Iterables.getLast(versions);

  version = newest.toString();
  return version;
}
 

public static Set<Artifact> transitiveDependencies(Artifact artifact) {

    RepositorySystem system = newRepositorySystem();

    RepositorySystemSession session = newRepositorySystemSession(system);

    CollectRequest collectRequest = new CollectRequest();
    collectRequest.setRoot(new Dependency(artifact, ""));
    collectRequest.setRepositories(repositories());

    CollectResult collectResult = null;
    try {
      collectResult = system.collectDependencies(session, collectRequest);
    } catch (DependencyCollectionException e) {
      throw new RuntimeException(e);
    }

    PreorderNodeListGenerator visitor = new PreorderNodeListGenerator();
    collectResult.getRoot().accept(visitor);

    return ImmutableSet.copyOf(
      visitor.getNodes().stream()
        .filter(d -> !d.getDependency().isOptional())
        .map(DependencyNode::getArtifact)
        .collect(Collectors.toList()));
  }
 

public List<Version> getAllVersions(String groupId, String artifactId) {
    String repositoryUrl = "http://maven.repo/nexus/content/groups/public";
    RepositorySystem repoSystem = newRepositorySystem();

    RepositorySystemSession session = newSession(repoSystem);
    RemoteRepository central = null;
    central = new RemoteRepository.Builder("central", "default", repositoryUrl).build();

    Artifact artifact = new DefaultArtifact(groupId + ":" + artifactId + ":[0,)");
    VersionRangeRequest rangeRequest = new VersionRangeRequest();
    rangeRequest.setArtifact(artifact);
    rangeRequest.addRepository(central);
    VersionRangeResult rangeResult;
    try {
        rangeResult = repoSystem.resolveVersionRange(session, rangeRequest);
    } catch (VersionRangeResolutionException e) {
        throw new RuntimeException(e);
    }
    List<Version> versions = rangeResult.getVersions().stream()
            .filter(v -> !v.toString().toLowerCase().endsWith("-snapshot"))
            .filter(v -> !groupId.contains("org.springframework") || v.toString().equals("2.0.0.RELEASE"))
            .collect(Collectors.toList());
    logger.info("artifact: {}, Available versions: {}", artifact, versions);
    return versions;
}
 

DependencyResolver() {
	try {
		ServiceLocator serviceLocator = createServiceLocator();
		DefaultRepositorySystemSession session = MavenRepositorySystemUtils.newSession();
		session.setArtifactDescriptorPolicy(new SimpleArtifactDescriptorPolicy(false, false));
		this.localRepositoryLocation = Files.createTempDirectory("metadata-validation-m2");
		LocalRepository localRepository = new LocalRepository(this.localRepositoryLocation.toFile());
		this.repositorySystem = serviceLocator.getService(RepositorySystem.class);
		session.setLocalRepositoryManager(
				this.repositorySystem.newLocalRepositoryManager(session, localRepository));
		session.setReadOnly();
		this.repositorySystemSession = session;
	}
	catch (Exception ex) {
		throw new RuntimeException(ex);
	}
}
 

private RepositorySystem newRepositorySystem() {
	DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
	locator.addService(RepositoryConnectorFactory.class, BasicRepositoryConnectorFactory.class);
	locator.addService(TransporterFactory.class, FileTransporterFactory.class);

	if (properties.isUseWagon()) {
		locator.addService(WagonProvider.class, StaticWagonProvider.class);
		locator.addService(WagonConfigurator.class, StaticWagonConfigurator.class);
		locator.addService(TransporterFactory.class, WagonTransporterFactory.class);
	} else {
		locator.addService(TransporterFactory.class, HttpTransporterFactory.class);
	}

	locator.setErrorHandler(new DefaultServiceLocator.ErrorHandler() {
		@Override
		public void serviceCreationFailed(Class<?> type, Class<?> impl, Throwable exception) {
			throw new RuntimeException(exception);
		}
	});
	return locator.getService(RepositorySystem.class);
}
 

private String getLatestLibertyRuntimeVersion() {
    String libertyVersion = null;

    RemoteRepository central = new RemoteRepository.Builder("central", "default", "http://repo1.maven.org/maven2/")
            .build();
    RepositorySystem repoSystem = newRepositorySystem();
    RepositorySystemSession session = newSession(repoSystem);
    String version = "[19.0.0.6,)";
    Artifact artifact = new DefaultArtifact("io.openliberty:openliberty-runtime:" + version);
    VersionRangeRequest request = new VersionRangeRequest(artifact, Arrays.asList(central), null);
    try {
        VersionRangeResult versionResult = repoSystem.resolveVersionRange(session, request);
        libertyVersion = versionResult.getHighestVersion().toString();
    } catch (VersionRangeResolutionException e) {
        e.printStackTrace();
    }

    return libertyVersion;

}
 

public static File getSdk(MavenProject project, RepositorySystem repoSystem, RepositorySystemSession repoSession, List<RemoteRepository>... repos)
        throws MojoExecutionException {
  Artifact artifact = (Artifact) find(project.getPluginArtifacts(), new Predicate<Artifact>() {
    @Override
    public boolean apply(Artifact artifact1) {
      return (artifact1.getArtifactId().equals("appengine-maven-plugin")
              && artifact1.getGroupId().equals("com.google.appengine"));
    }
  });

  String version = artifact.getVersion();
  
  if(version.endsWith("-SNAPSHOT")) {
    String newestVersion = determineNewestVersion(repoSystem, repoSession, repos);
    return getSdk(newestVersion, repoSystem, repoSession, repos);
  }

  return getSdk(version, repoSystem, repoSession, repos);
}
 

private static VersionRangeResult findVersionRange(
    RepositorySystem repositorySystem,
    RepositorySystemSession session,
    String groupId,
    String artifactId)
    throws MavenRepositoryException {

  Artifact artifactWithVersionRange = new DefaultArtifact(groupId, artifactId, null, "(0,]");
  VersionRangeRequest request =
      new VersionRangeRequest(
          artifactWithVersionRange, ImmutableList.of(RepositoryUtility.CENTRAL), null);

  try {
    return repositorySystem.resolveVersionRange(session, request);
  } catch (VersionRangeResolutionException ex) {
    throw new MavenRepositoryException(ex);
  }
}
 

private static DefaultRepositorySystemSession newSession(
    RepositorySystem system, DependencySelector dependencySelector) {
  DefaultRepositorySystemSession session = createDefaultRepositorySystemSession(system);
  session.setDependencySelector(dependencySelector);

  // By default, Maven's MavenRepositorySystemUtils.newSession() returns a session with
  // ChainedDependencyGraphTransformer(ConflictResolver(...), JavaDependencyContextRefiner()).
  // Because the full dependency graph does not resolve conflicts of versions, this session does
  // not use ConflictResolver.
  session.setDependencyGraphTransformer(
      new ChainedDependencyGraphTransformer(
          new CycleBreakerGraphTransformer(), // Avoids StackOverflowError
          new JavaDependencyContextRefiner()));

  // No dependency management in the full dependency graph
  session.setDependencyManager(null);

  return session;
}
 

@SuppressWarnings("unchecked")
public static File getSdk(MavenProject project, RepositorySystem repoSystem, RepositorySystemSession repoSession,
                          List<RemoteRepository>... repos) throws MojoExecutionException {
    Artifact artifact = find(project.getPluginArtifacts(), new Predicate<Artifact>() {
        @Override
        public boolean apply(Artifact artifact1) {
            return artifact1.getArtifactId().equals("appengine-maven-plugin");
        }
    });

    String version = artifact.getVersion();

    if (version.endsWith("-SNAPSHOT")) {
        String newestVersion = determineNewestVersion(repoSystem, repoSession, repos);
        return getSdk(newestVersion, repoSystem, repoSession, repos);
    }

    return getSdk(version, repoSystem, repoSession, repos);
}
 

public static Bom readBom(Path pomFile) throws MavenRepositoryException {
  RepositorySystem system = RepositoryUtility.newRepositorySystem();
  RepositorySystemSession session = RepositoryUtility.newSession(system);

  MavenProject mavenProject = RepositoryUtility.createMavenProject(pomFile, session);
  String coordinates = mavenProject.getGroupId() + ":" + mavenProject.getArtifactId() 
      + ":" + mavenProject.getVersion();
  DependencyManagement dependencyManagement = mavenProject.getDependencyManagement();
  List<org.apache.maven.model.Dependency> dependencies = dependencyManagement.getDependencies();

  ArtifactTypeRegistry registry = session.getArtifactTypeRegistry();
  ImmutableList<Artifact> artifacts = dependencies.stream()
      .map(dependency -> RepositoryUtils.toDependency(dependency, registry))
      .map(Dependency::getArtifact)
      .filter(artifact -> !shouldSkipBomMember(artifact))
      .collect(ImmutableList.toImmutableList());
  
  Bom bom = new Bom(coordinates, artifacts);
  return bom;
}
 

private List<String> getMavenParentDependencies(String parent)
		throws DependencyResolutionException, ArtifactDescriptorException {
	List<String> dependencies = new ArrayList<>();
	DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
	RepositorySystem system = newRepositorySystem(locator);
	RepositorySystemSession session = newSession(system);

	RemoteRepository central = new RemoteRepository.Builder("central", "default", "http://repo1.maven.org/maven2/")
			.build();

	org.eclipse.aether.artifact.Artifact artifact = new DefaultArtifact(parent);
	ArtifactDescriptorRequest request = new ArtifactDescriptorRequest(artifact, Arrays.asList(central), null);
	try {
		ArtifactDescriptorResult result = system.readArtifactDescriptor(session, request);
		for (org.eclipse.aether.graph.Dependency dependency : result.getManagedDependencies()) {
			dependencies.add(dependency.getArtifact().getGroupId() + ":" + dependency.getArtifact().getGroupId());
		}
	} catch (Exception e) {
		logger.error(e.getMessage());
	}
	return dependencies;

}
 

/**
 * Used by the Maven Plugin.
 * @param repositorySystem Maven repository system
 * @param remoteRepositories remote artifact repositories
 * @param session repository system session
 */
public AetherStubDownloader(RepositorySystem repositorySystem,
		List<RemoteRepository> remoteRepositories, RepositorySystemSession session,
		Settings settings) {
	this.deleteStubsAfterTest = true;
	this.remoteRepos = remoteRepositories;
	this.settings = settings;
	this.repositorySystem = repositorySystem;
	this.session = session;
	if (remoteReposMissing()) {
		log.error(
				"Remote repositories for stubs are not specified and work offline flag wasn't passed");
	}
	this.workOffline = false;
	registerShutdownHook();
}
 

public static RepositorySystem newRepositorySystem ()
{
    final DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator ();
    locator.addService ( RepositoryConnectorFactory.class, BasicRepositoryConnectorFactory.class );
    locator.addService ( TransporterFactory.class, FileTransporterFactory.class );
    locator.addService ( TransporterFactory.class, HttpTransporterFactory.class );

    locator.setErrorHandler ( new DefaultServiceLocator.ErrorHandler () {
        @Override
        public void serviceCreationFailed ( final Class<?> type, final Class<?> impl, final Throwable exception )
        {
            exception.printStackTrace ();
        }
    } );

    return locator.getService ( RepositorySystem.class );
}
 

public MavenArtifactResolvingHelper(ArtifactResolver resolver,
                                    RepositorySystem system,
                                    RepositorySystemSession session,
                                    Proxy proxy) {
    this.resolver = resolver;
    this.system = system;
    this.session = session;
    this.proxy = proxy;
    this.remoteRepositories.add(buildRemoteRepository("jboss-public-repository-group",
                                                      "http://repository.jboss.org/nexus/content/groups/public/",
                                                      null,
                                                      this.proxy));
}
 

MavenResolverDependencyManagementVersionResolver(Path cacheLocation) {
	ServiceLocator serviceLocator = createServiceLocator();
	DefaultRepositorySystemSession session = MavenRepositorySystemUtils.newSession();
	session.setArtifactDescriptorPolicy(new SimpleArtifactDescriptorPolicy(false, false));
	LocalRepository localRepository = new LocalRepository(cacheLocation.toFile());
	this.repositorySystem = serviceLocator.getService(RepositorySystem.class);
	session.setLocalRepositoryManager(this.repositorySystem.newLocalRepositoryManager(session, localRepository));
	session.setReadOnly();
	this.repositorySystemSession = session;
}
 

private RepositorySystemSession newSession(RepositorySystem system) {
        DefaultRepositorySystemSession session = MavenRepositorySystemUtils.newSession();
        LocalRepository localRepo = new LocalRepository("target/local-repo");
        session.setLocalRepositoryManager(system.newLocalRepositoryManager(session, localRepo));
        // set possible proxies and mirrors
//        session.setProxySelector(new DefaultProxySelector().add(new Proxy(Proxy.TYPE_HTTP, "host", 3625), Arrays.asList("localhost", "127.0.0.1")));
//        session.setMirrorSelector(new DefaultMirrorSelector().add("my-mirror", "http://mirror", "default", false, "external:*", null));
        return session;
    }
 

private static String determineNewestVersion(RepositorySystem repoSystem, RepositorySystemSession repoSession,
                                             List<RemoteRepository>[] repos) throws MojoExecutionException {
    String version;
    VersionRangeRequest rangeRequest = new VersionRangeRequest();
    rangeRequest.setArtifact(new DefaultArtifact(SDK_GROUP_ID + ":" + SDK_ARTIFACT_ID + ":[0,)"));
    for (List<RemoteRepository> repoList : repos) {
        for (RemoteRepository repo : repoList) {
            rangeRequest.addRepository(repo);
        }
    }

    VersionRangeResult rangeResult;
    try {
        rangeResult = repoSystem.resolveVersionRange(repoSession, rangeRequest);
    } catch (VersionRangeResolutionException e) {
        throw new MojoExecutionException("Could not resolve latest version of the App Engine Java SDK", e);
    }

    List<Version> versions = rangeResult.getVersions();

    Collections.sort(versions);

    Version newest = Iterables.getLast(versions);

    version = newest.toString();
    return version;
}
 

public static RepositorySystem newRepositorySystem() {
    DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
    locator.addService(RepositoryConnectorFactory.class, BasicRepositoryConnectorFactory.class);
    locator.addService(TransporterFactory.class, FileTransporterFactory.class);
    locator.addService(TransporterFactory.class, HttpTransporterFactory.class);

    locator.setErrorHandler(new DefaultServiceLocator.ErrorHandler() {
        @Override
        public void serviceCreationFailed(Class<?> type, Class<?> impl, Throwable exception) {
            exception.printStackTrace();
        }
    });

    return locator.getService(RepositorySystem.class);
}
 

/**
 * Open a new Maven repository session for full dependency graph resolution.
 *
 * @see {@link DependencyGraphBuilder}
 */
static DefaultRepositorySystemSession newSessionForFullDependency(RepositorySystem system) {
  // This combination of DependencySelector comes from the default specified in
  // `MavenRepositorySystemUtils.newSession`.
  // LinkageChecker needs to include 'provided'-scope and optional dependencies.
  DependencySelector dependencySelector =
      new AndDependencySelector(
          // ScopeDependencySelector takes exclusions. 'Provided' scope is not here to avoid
          // false positive in LinkageChecker.
          new ScopeDependencySelector("test"),
          new ExclusionDependencySelector(),
          new FilteringZipDependencySelector());
  
  return newSession(system, dependencySelector);
}
 

@VisibleForTesting
static DefaultRepositorySystemSession createDefaultRepositorySystemSession(
    RepositorySystem system) {
  DefaultRepositorySystemSession session = MavenRepositorySystemUtils.newSession();
  LocalRepository localRepository = new LocalRepository(findLocalRepository());
  session.setLocalRepositoryManager(system.newLocalRepositoryManager(session, localRepository));
  return session;
}
 

private void resolve( ResolveRequest resolveRequest )
{

    RepositorySystem system = mavenSystemManager.getRepositorySystem();
    RepositorySystemSession session = MavenSystemManager.newRepositorySystemSession( resolveRequest.localRepoDir );

    org.eclipse.aether.artifact.Artifact artifact = new DefaultArtifact(
        resolveRequest.groupId + ":" + resolveRequest.artifactId + ":" + resolveRequest.version );

    CollectRequest collectRequest = new CollectRequest();
    collectRequest.setRoot( new Dependency( artifact, "" ) );

    // add remote repositories
    for ( RemoteRepository remoteRepository : resolveRequest.remoteRepositories )
    {
        org.eclipse.aether.repository.RemoteRepository repo = new org.eclipse.aether.repository.RemoteRepository.Builder( remoteRepository.getId( ), "default", remoteRepository.getLocation( ).toString() ).build( );
        collectRequest.addRepository(repo);
    }
    collectRequest.setRequestContext( "project" );

    //collectRequest.addRepository( repo );

    try
    {
        CollectResult collectResult = system.collectDependencies( session, collectRequest );
        collectResult.getRoot().accept( resolveRequest.dependencyVisitor );
        log.debug("Collected dependency results for resolve");
    }
    catch ( DependencyCollectionException e )
    {
        log.error( "Error while collecting dependencies (resolve): {}", e.getMessage(), e );
    }



}
 

private static RepositorySystem newRepositorySystem() {
	DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
	locator.addService(RepositoryConnectorFactory.class, BasicRepositoryConnectorFactory.class);
	locator.addService(TransporterFactory.class, FileTransporterFactory.class);
	locator.addService(TransporterFactory.class, HttpTransporterFactory.class);
	return locator.getService(RepositorySystem.class);

}
 

@Test
public void testRepositorySystemDirect() {
    DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
    locator.setErrorHandler(new MavenUtil.MyErrorHandler());

    RepositorySystem repoSys = locator.getService(RepositorySystem.class);
    Assert.assertNotNull(repoSys);
}
 

/**
 * This method fetches the artifact from the remote server using aether library
 * 
 * @param groupId group ID of the artifact
 * @param artifactId artifact ID of the artifact
 * @param version artifact version to be downloaded
 * @param classifier classifier of the artifact
 * @param packaging packaging of the artifact
 * @param localRepository destination path
 * @return location of the downloaded artifact in the local system
 * @throws IOException
 */
public static File getArtifactByAether(String groupId, String artifactId, String version, String classifier, String packaging, File localRepository) throws IOException {
	RepositorySystem repositorySystem = newRepositorySystem();
	RepositorySystemSession session = newSession(repositorySystem, localRepository);

	Artifact artifact = new DefaultArtifact(groupId, artifactId, classifier, packaging, version);
	ArtifactRequest artifactRequest = new ArtifactRequest();
	artifactRequest.setArtifact(artifact);

	List<RemoteRepository> repositories = new ArrayList<>();
	Section ini = Utils.getConfig().get(Constants.INI_URL_HEADER);

	RemoteRepository remoteRepository = new RemoteRepository.Builder("public", "default", ini.get(Constants.INI_NEXUS_SOOT_RELEASE)).build();

	repositories.add(remoteRepository);

	artifactRequest.setRepositories(repositories);
	File result = null;

	try {
		ArtifactResult artifactResult = repositorySystem.resolveArtifact(session, artifactRequest);
		artifact = artifactResult.getArtifact();
		if (artifact != null) {
			result = artifact.getFile();
		}
	}
	catch (ArtifactResolutionException e) {
		throw new IOException("Artifact " + groupId + ":" + artifactId + ":" + version + " could not be downloaded due to " + e.getMessage());
	}

	return result;

}
 

public void cacheArtifact(Artifact artifact)
    throws IOException, SettingsBuildingException,
    DependencyCollectionException, DependencyResolutionException,
    ArtifactResolutionException, ModelBuildingException {

  // setup a maven resolution hierarchy that uses the main local repo as
  // a remote repo and then cache into a new local repo
  List<RemoteRepository> repos = Utils.getRepositoryList();
  RepositorySystem repoSystem = Utils.getRepositorySystem();
  DefaultRepositorySystemSession repoSession =
      Utils.getRepositorySession(repoSystem, null);

  // treat the usual local repository as if it were a remote, ignoring checksum
  // failures as the local repo doesn't have checksums as a rule
  RemoteRepository localAsRemote =
      new RemoteRepository.Builder("localAsRemote", "default",
          repoSession.getLocalRepository().getBasedir().toURI().toString())
              .setPolicy(new RepositoryPolicy(true,
                      RepositoryPolicy.UPDATE_POLICY_NEVER,
                      RepositoryPolicy.CHECKSUM_POLICY_IGNORE))
              .build();

  repos.add(0, localAsRemote);

  repoSession.setLocalRepositoryManager(repoSystem.newLocalRepositoryManager(
      repoSession, new LocalRepository(head.getAbsolutePath())));

  Dependency dependency = new Dependency(artifact, "runtime");

  CollectRequest collectRequest = new CollectRequest(dependency, repos);

  DependencyNode node =
      repoSystem.collectDependencies(repoSession, collectRequest).getRoot();

  DependencyRequest dependencyRequest = new DependencyRequest();
  dependencyRequest.setRoot(node);

  repoSystem.resolveDependencies(repoSession, dependencyRequest);

}
 

static DefaultRepositorySystemSession newSessionForVerboseDependency(RepositorySystem system) {
  DependencySelector dependencySelector =
      new AndDependencySelector(
          // ScopeDependencySelector takes exclusions. 'Provided' scope is not here to avoid
          // false positive in LinkageChecker.
          new ScopeDependencySelector("test"),
          new OptionalDependencySelector(),
          new ExclusionDependencySelector(),
          new FilteringZipDependencySelector());
  
  return newSession(system, dependencySelector);
}