* KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.eventspy;

import java.util.Map;

/**
 * A core extension to monitor Maven's execution. Typically, such an extension gets loaded into Maven by specifying the

            return;
        }
        for (EventSpy eventSpy : eventSpies) {
            try {
                eventSpy.onEvent(event);
            } catch (Exception | LinkageError e) {
                logError("notify", e, eventSpy);
            }
        }
    }

    public void close() {
        if (eventSpies.isEmpty()) {
            return;
        }
        for (EventSpy eventSpy : eventSpies) {
            try {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.eventspy;

/**
 * A skeleton eventspy that does nothing other than helping implementors.
 * @since 3.0.2
 */
public abstract class AbstractEventSpy implements EventSpy {

    public void init(Context context) throws Exception {}

    public void onEvent(Object event) throws Exception {}

import java.util.Collection;

import org.apache.maven.api.Event;
import org.apache.maven.api.Listener;
import org.apache.maven.eventspy.EventSpy;
import org.apache.maven.execution.ExecutionEvent;

@Named
@Singleton
public class EventSpyImpl implements EventSpy {

    private DefaultSessionFactory sessionFactory;

    @Inject
    EventSpyImpl(DefaultSessionFactory sessionFactory) {

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * A listener for session events.
 * 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);

import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.apache.maven.api.model.Model;
import org.apache.maven.api.services.Lookup;
import org.apache.maven.eventspy.EventSpy;
import org.apache.maven.execution.ExecutionEvent;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.internal.impl.resolver.MavenWorkspaceReader;
import org.apache.maven.project.MavenProject;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.eventspy.internal;

import org.apache.maven.execution.AbstractExecutionListener;
import org.apache.maven.execution.ExecutionEvent;
import org.apache.maven.execution.ExecutionListener;

/**

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.artifact.handler.ArtifactHandler;
import org.apache.maven.artifact.handler.DefaultArtifactHandler;
import org.apache.maven.eventspy.AbstractEventSpy;
import org.apache.maven.execution.ExecutionEvent;

import static java.util.Objects.requireNonNull;

/**
 */
@Named
@Singleton

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.eventspy.internal;

import org.eclipse.aether.AbstractRepositoryListener;
import org.eclipse.aether.RepositoryEvent;
import org.eclipse.aether.RepositoryListener;

/**
 * Forwards repository events to EventSpies.

import org.apache.maven.api.spi.TypeProvider;
import org.apache.maven.artifact.handler.ArtifactHandler;
import org.apache.maven.artifact.handler.manager.LegacyArtifactHandlerManager;
import org.apache.maven.eventspy.AbstractEventSpy;
import org.apache.maven.execution.ExecutionEvent;
import org.apache.maven.internal.impl.resolver.type.DefaultType;

import static java.util.function.Function.identity;