}

        // reactor failure modes
        if (t instanceof RuntimeException || !(t instanceof Exception)) {
            // fail fast on RuntimeExceptions, Errors and "other" Throwables
            // assume these are system errors and further build is meaningless
            buildContext.getReactorBuildStatus().halt();

/**
 * An implementation of a workspace reader that knows how to search the Maven reactor for artifacts, either as packaged
 * jar if it has been built, or only compile output directory if packaging hasn't happened yet.
 *
 */
@Named(ReactorReader.HINT)
@SessionScoped
class ReactorReader implements MavenWorkspaceReader {
    public static final String HINT = "reactor";

    public static final String PROJECT_LOCAL_REPO = "project-local-repo";

                    String msg = str + " aggregator mojo is already being executed "
                            + "in this parallel build, those kind of mojos require exclusive access to "
                            + "reactor to prevent race conditions. This mojo execution will be blocked "
                            + "until the aggregator mojo is done.";
                    warn(msg);
                    acquiredAggregatorLock.lock();

                scenario("Select reactor by specific pom")
                        .requestedPom(MODULE_C)
                        .expectResult(MODULE_C, MODULE_C_1, MODULE_C_2),
                scenario("Select reactor by specific pom with also make dependencies")
                        .requestedPom(MODULE_C)
                        .makeBehavior(REACTOR_MAKE_UPSTREAM)

import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
import org.apache.maven.repository.Proxy;

/**
 * Abstraction of an artifact repository. Artifact repositories can be remote, local, or even build reactor or
 * IDE workspace.
 */
// TODO completely separate local and remote artifact repositories
public class MavenArtifactRepository implements ArtifactRepository {
    private static final String LS = System.lineSeparator();

    /**
     * The full set of projects before any potential constraining by --projects. Useful in the case where you want to
     * build a smaller set of projects but perform other operations in the context of your reactor.
     */
    private List<MavenProject> allProjects;

    private MavenProject topLevelProject;

    private ProjectDependencyGraph projectDependencyGraph;

    private boolean parallel;

    /**

    //
    // 4) Create MavenSession.
    //
    // 5) Execute AbstractLifecycleParticipant.afterSessionStart(session)
    //
    // 6) Get reactor projects looking for general POM errors
    //
    // 7) Create ProjectDependencyGraph using trimming which takes into account --projects and reactor mode.
    // This ensures that the projects passed into the ReactorReader are only those specified.
    //

        projects = new ProjectSorter(projects).getSortedProjects();

        assertEquals(parentProject, projects.get(0));

        // the order of these two is non-deterministic, based on when they're added to the reactor.
        assertThat(projects, hasItem(pluginProject));
        assertThat(projects, hasItem(pluginLevelDepProject));

        // the declaring project MUST be listed after the plugin and its plugin-level dep, though.

                        projectId,
                        conflictingProject.getFile(),
                        project.getFile(),
                        "Project '" + projectId + "' is duplicated in the reactor");
            }

            String projectKey = ArtifactUtils.versionlessKey(project.getGroupId(), project.getArtifactId());

        List<ArtifactRepository> pomRepositories = null;

        Artifact pomArtifact;

        Artifact relocatedArtifact = null;

        // TODO hack: don't rebuild model if it was already loaded during reactor resolution
        RepositorySystemSession repositorySession = legacySupport.getRepositorySession();
        final WorkspaceReader workspace = repositorySession.getWorkspaceReader();
        Model model;