* TODO: open this to other events like similar to {@code org.apache.maven.eventspy.EventSpy}
 *
 * @since 4.0.0
 */
@Experimental
@FunctionalInterface
@Consumer
public interface Listener {
    void onEvent(@Nonnull Event event);

    @Inject
    public LegacyArtifactHandlerManager(Map<String, ArtifactHandler> artifactHandlers) {
        this.artifactHandlers = requireNonNull(artifactHandlers);
    }

    @Override
    public void onEvent(Object event) {
        if (event instanceof ExecutionEvent) {
            ExecutionEvent executionEvent = (ExecutionEvent) event;
            if (executionEvent.getType() == ExecutionEvent.Type.SessionEnded) {

abstract class BasePromotionBuildType(vcsRootId: String, cleanCheckout: Boolean = true) : BuildType() {
    init {
        vcs {
            root(AbsoluteId(vcsRootId))

            checkoutMode = CheckoutMode.ON_AGENT
            this.cleanCheckout = cleanCheckout
            showDependenciesChanges = true
        }

        requirements {
            requiresOs(Os.LINUX)
            requiresNotEc2Agent()
        }

        this.usedTypes = new ConcurrentHashMap<>();
        this.manager = nonNull(manager, "artifactHandlerManager");
    }

    @Override
    public void onEvent(Object event) {
        if (event instanceof ExecutionEvent) {
            ExecutionEvent executionEvent = (ExecutionEvent) event;
            if (executionEvent.getType() == ExecutionEvent.Type.SessionEnded) {

    name = "GitHub Merge Queue Check Pass"
    type = Type.COMPOSITE

    vcs {
        root(AbsoluteId(VersionedSettingsBranch.fromDslContext().vcsRootId()))
        checkoutMode = CheckoutMode.ON_AGENT
    }

    features {
        enablePullRequestFeature()
        publishBuildStatusToGithub(model)
    }

    if (!VersionedSettingsBranch.fromDslContext().isExperimental) {
        triggers.vcs {

    assertThat(callbacks).isEmpty()
  }

  private fun consumeEvents(source: String) {
    val callback: ServerSentEventReader.Callback =
      object : ServerSentEventReader.Callback {
        override fun onEvent(
          id: String?,
          type: String?,
          data: String,
        ) {
          callbacks.add(Event(id, type, data))
        }

        override fun onRetryChange(timeMs: Long) {

        orderedEventSpyDispatcherMock
                .verify(eventSpyDispatcherMock, times(1))
                .onEvent(any(ToolchainsBuildingRequest.class));
        orderedEventSpyDispatcherMock
                .verify(eventSpyDispatcherMock, times(1))
                .onEvent(any(ToolchainsBuildingResult.class));
    }

    @Test
    void resumeFromSelectorIsSuggestedWithoutGroupId() {

            cliRequest.request.setRepositoryCache(new DefaultRepositoryCache());
        }

        eventSpyDispatcher.onEvent(request);

        MavenExecutionResult result = maven.execute(request);

        eventSpyDispatcher.onEvent(result);

        eventSpyDispatcher.close();

        if (result.hasExceptions()) {
            ExceptionHandler handler = new DefaultExceptionHandler();

        ReactorReaderSpy(Lookup lookup) {
            this.lookup = lookup;
        }

        @Override
        public void init(Context context) throws Exception {}

        @Override
        public void onEvent(Object event) throws Exception {
            if (event instanceof ExecutionEvent) {
                ReactorReader reactorReader = lookup.lookup(ReactorReader.class);

        param("env.BUILD_BRANCH", "%teamcity.build.branch%")
    }

    vcs {
        root(AbsoluteId(VersionedSettingsBranch.fromDslContext().vcsRootId()))
        checkoutMode = CheckoutMode.ON_AGENT
        branchFilter = branchesFilterExcluding()
    }

    features {
        enablePullRequestFeature()
    }

    requirements {
        requiresOs(os)
        requiresArch(os, arch)