org.apache.maven.Maven Java Examples

private void checkSupport() {
  Properties properties = new Properties();

  try (InputStream in = Maven.class.getResourceAsStream("/META-INF/maven/org.apache.maven/maven-core/pom.properties")) {
    if (in != null) {
      properties.load(in);
    }
  } catch (IOException e) {
    log.error("Unable determine maven version, deploy at end might fail", e);
    return;
  }

  String mavenVersion = properties.getProperty("version");
  if (mavenVersion != null) {
    int c = new DefaultArtifactVersion(mavenVersion).compareTo(new DefaultArtifactVersion("3.3.1"));
    if (c < 0) {
      throw new IllegalStateException("Deploy-at-end is not supported on maven versions <3.3.1");
    }
  } else {
    log.error("Unable determine maven version, deploy at end might fail");
  }
}
 

/**
 * replacement for MavenProject.getParent() which has bad long term memory behaviour. We offset it by recalculating/reparsing everything
 * therefore should not be used lightly!
 * pass a MavenProject instance and current configuration and other settings will be applied when loading the parent.
 * @param project
 * @return null or the parent mavenproject
 */

public MavenProject loadParentOf(MavenEmbedder embedder, MavenProject project) throws ProjectBuildingException {

    MavenProject parent = null;
    ProjectBuilder builder = embedder.lookupComponent(ProjectBuilder.class);
    MavenExecutionRequest req = embedder.createMavenExecutionRequest();
    M2Configuration active = configProvider.getActiveConfiguration();
    req.addActiveProfiles(active.getActivatedProfiles());
    req.setNoSnapshotUpdates(true);
    req.setUpdateSnapshots(false);
    req.setInteractiveMode(false);
    req.setRecursive(false);
    req.setOffline(true);
    //#238800 important to merge, not replace
    Properties uprops = req.getUserProperties();
    uprops.putAll(MavenProjectCache.createUserPropsForProjectLoading(active.getProperties()));
    req.setUserProperties(uprops);
    
    ProjectBuildingRequest request = req.getProjectBuildingRequest();
    request.setRemoteRepositories(project.getRemoteArtifactRepositories());
    DefaultMaven maven = (DefaultMaven) embedder.lookupComponent(Maven.class);
    
    request.setRepositorySession(maven.newRepositorySession(req));

    if (project.getParentFile() != null) {
        parent = builder.build(project.getParentFile(), request).getProject();
    } else if (project.getModel().getParent() != null) {
        parent = builder.build(project.getParentArtifact(), request).getProject();
    }
    //clear the project building request, it references multiple Maven Models via the RepositorySession cache
    //is not used in maven itself, most likely used by m2e only..
    if (parent != null) {
        parent.setProjectBuildingRequest(null);
    }
    MavenEmbedder.normalizePaths(parent);
    return parent;
}
 

static List<ModelProblem> runMavenValidationImpl(final File pom) {
    //TODO profiles based on current configuration??
    MavenEmbedder embedder = EmbedderFactory.getProjectEmbedder();
    MavenExecutionRequest meReq = embedder.createMavenExecutionRequest();
    ProjectBuildingRequest req = meReq.getProjectBuildingRequest();
    req.setValidationLevel(ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_3_1); // currently enables just <reporting> warning
    req.setLocalRepository(embedder.getLocalRepository());
    List<ArtifactRepository> remoteRepos = RepositoryPreferences.getInstance().remoteRepositories(embedder);
    req.setRemoteRepositories(remoteRepos);
    req.setRepositorySession(((DefaultMaven) embedder.lookupComponent(Maven.class)).newRepositorySession(meReq));
    List<ModelProblem> problems;
    try {
        problems = embedder.lookupComponent(ProjectBuilder.class).build(pom, req).getProblems();
    } catch (ProjectBuildingException x) {
        problems = new ArrayList<ModelProblem>();
        List<ProjectBuildingResult> results = x.getResults();
        if (results != null) { //one code point throwing ProjectBuildingException contains results,
            for (ProjectBuildingResult result : results) {
                problems.addAll(result.getProblems());
            }
        } else {
            // another code point throwing ProjectBuildingException doesn't contain results..
            Throwable cause = x.getCause();
            if (cause instanceof ModelBuildingException) {
                problems.addAll(((ModelBuildingException) cause).getProblems());
            }
        }
    }
    return problems;
}
 

MavenEmbedder(EmbedderConfiguration configuration) throws ComponentLookupException {
    embedderConfiguration = configuration;
    plexus = configuration.getContainer();
    this.maven = (DefaultMaven) plexus.lookup(Maven.class);
    this.projectBuilder = plexus.lookup(ProjectBuilder.class);
    this.repositorySystem = plexus.lookup(RepositorySystem.class);
    this.settingsBuilder = plexus.lookup(SettingsBuilder.class);
    this.populator = plexus.lookup(MavenExecutionRequestPopulator.class);
    settingsDecrypter = plexus.lookup(SettingsDecrypter.class);
}
 

static List<ModelProblem> runMavenValidationImpl(final File pom) {
    MavenEmbedder embedder = EmbedderFactory.getProjectEmbedder();
    MavenExecutionRequest meReq = embedder.createMavenExecutionRequest();
    ProjectBuildingRequest req = meReq.getProjectBuildingRequest();
    req.setValidationLevel(ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_3_0); // 3.1 currently enables just <reporting> warning, see issue 223562 for details on why it's bad to show.
    req.setLocalRepository(embedder.getLocalRepository());
    List<ArtifactRepository> remoteRepos = RepositoryPreferences.getInstance().remoteRepositories(embedder);
    req.setRemoteRepositories(remoteRepos);
    req.setRepositorySession(((DefaultMaven) embedder.lookupComponent(Maven.class)).newRepositorySession(meReq));
    List<ModelProblem> problems;
    try {
        problems = embedder.lookupComponent(ProjectBuilder.class).build(pom, req).getProblems();
    } catch (ProjectBuildingException x) {
        problems = new ArrayList<ModelProblem>();
        List<ProjectBuildingResult> results = x.getResults();
        if (results != null) { //one code point throwing ProjectBuildingException contains results,
            for (ProjectBuildingResult result : results) {
                problems.addAll(result.getProblems());
            }
        } else {
            // another code point throwing ProjectBuildingException doesn't contain results..
            Throwable cause = x.getCause();
            if (cause instanceof ModelBuildingException) {
                problems.addAll(((ModelBuildingException) cause).getProblems());
            }
        }
    }
    List<ModelProblem> toRet = new LinkedList<ModelProblem>();
    for (ModelProblem problem : problems) {
        if(ModelUtils.checkByCLIMavenValidationLevel(problem)) {
            toRet.add(problem);
        }
    }
    return toRet;
}
 

protected MavenSession newMavenSession() {
    try {
        MavenExecutionRequest request = new DefaultMavenExecutionRequest();
        MavenExecutionResult result = new DefaultMavenExecutionResult();

        // populate sensible defaults, including repository basedir and remote repos
        MavenExecutionRequestPopulator populator;
        populator = getContainer().lookup(MavenExecutionRequestPopulator.class);
        populator.populateDefaults(request);

        // this is needed to allow java profiles to get resolved; i.e. avoid during project builds:
        // [ERROR] Failed to determine Java version for profile java-1.5-detected @ org.apache.commons:commons-parent:22, /Users/alex/.m2/repository/org/apache/commons/commons-parent/22/commons-parent-22.pom, line 909, column 14
        request.setSystemProperties(System.getProperties());

        // and this is needed so that the repo session in the maven session
        // has a repo manager, and it points at the local repo
        // (cf MavenRepositorySystemUtils.newSession() which is what is otherwise done)
        DefaultMaven maven = (DefaultMaven) getContainer().lookup(Maven.class);
        DefaultRepositorySystemSession repoSession =
                (DefaultRepositorySystemSession) maven.newRepositorySession(request);
        repoSession.setLocalRepositoryManager(
                new SimpleLocalRepositoryManagerFactory().newInstance(repoSession,
                        new LocalRepository(request.getLocalRepository().getBasedir())));

        @SuppressWarnings("deprecation")
        MavenSession session = new MavenSession(getContainer(),
                repoSession,
                request, result);
        return session;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}
 

protected MavenSession newMavenSession() {
    try {
        MavenExecutionRequest request = new DefaultMavenExecutionRequest();
        MavenExecutionResult result = new DefaultMavenExecutionResult();

        // populate sensible defaults, including repository basedir and remote repos
        MavenExecutionRequestPopulator populator;
        populator = getContainer().lookup( MavenExecutionRequestPopulator.class );
        populator.populateDefaults( request );

        // this is needed to allow java profiles to get resolved; i.e. avoid during project builds:
        // [ERROR] Failed to determine Java version for profile java-1.5-detected @ org.apache.commons:commons-parent:22, /Users/alex/.m2/repository/org/apache/commons/commons-parent/22/commons-parent-22.pom, line 909, column 14
        request.setSystemProperties( System.getProperties() );
        
        // and this is needed so that the repo session in the maven session 
        // has a repo manager, and it points at the local repo
        // (cf MavenRepositorySystemUtils.newSession() which is what is otherwise done)
        DefaultMaven maven = (DefaultMaven) getContainer().lookup( Maven.class );
        DefaultRepositorySystemSession repoSession =
            (DefaultRepositorySystemSession) maven.newRepositorySession( request );
        repoSession.setLocalRepositoryManager(
            new SimpleLocalRepositoryManagerFactory().newInstance(repoSession, 
                new LocalRepository( request.getLocalRepository().getBasedir() ) ));

        @SuppressWarnings("deprecation")
        MavenSession session = new MavenSession( getContainer(), 
            repoSession,
            request, result );
        return session;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}
 

protected MavenSession newMavenSession() {
    try {
        MavenExecutionRequest request = new DefaultMavenExecutionRequest();
        MavenExecutionResult result = new DefaultMavenExecutionResult();

        // populate sensible defaults, including repository basedir and remote repos
        MavenExecutionRequestPopulator populator;
        populator = getContainer().lookup(MavenExecutionRequestPopulator.class);
        populator.populateDefaults(request);

        // this is needed to allow java profiles to get resolved; i.e. avoid during project builds:
        // [ERROR] Failed to determine Java version for profile java-1.5-detected @ org.apache.commons:commons-parent:22, /Users/alex/.m2/repository/org/apache/commons/commons-parent/22/commons-parent-22.pom, line 909, column 14
        request.setSystemProperties(System.getProperties());

        // and this is needed so that the repo session in the maven session
        // has a repo manager, and it points at the local repo
        // (cf MavenRepositorySystemUtils.newSession() which is what is otherwise done)
        DefaultMaven maven = (DefaultMaven) getContainer().lookup(Maven.class);
        DefaultRepositorySystemSession repoSession =
                (DefaultRepositorySystemSession) maven.newRepositorySession(request);
        repoSession.setLocalRepositoryManager(
                new SimpleLocalRepositoryManagerFactory().newInstance(repoSession,
                        new LocalRepository(request.getLocalRepository().getBasedir())));

        @SuppressWarnings("deprecation")
        MavenSession session = new MavenSession(getContainer(),
                repoSession,
                request, result);
        return session;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}