package org.apache.maven.resolver.examples.util;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   * 
   *  http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.io.PrintStream;
  
  import org.eclipse.aether.AbstractRepositoryListener;
  import org.eclipse.aether.RepositoryEvent;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * A simplistic repository listener that logs events to the console.
   */
  public class ConsoleRepositoryListener
      extends AbstractRepositoryListener
  {
  
      private final PrintStream out;
  
      public ConsoleRepositoryListener()
      {
          this( null );
      }
  
      public ConsoleRepositoryListener( PrintStream out )
      {
          this.out = ( out != null ) ? out : System.out;
      }
  
      public void artifactDeployed( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Deployed " + event.getArtifact() + " to " + event.getRepository() );
      }
  
      public void artifactDeploying( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Deploying " + event.getArtifact() + " to " + event.getRepository() );
      }
  
      public void artifactDescriptorInvalid( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Invalid artifact descriptor for " + event.getArtifact() + ": "
              + event.getException().getMessage() );
      }
  
      public void artifactDescriptorMissing( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Missing artifact descriptor for " + event.getArtifact() );
      }
  
      public void artifactInstalled( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Installed " + event.getArtifact() + " to " + event.getFile() );
      }
  
      public void artifactInstalling( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Installing " + event.getArtifact() + " to " + event.getFile() );
      }
  
      public void artifactResolved( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Resolved artifact " + event.getArtifact() + " from " + event.getRepository() );
      }
  
      public void artifactDownloading( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
          out.println( "Downloading artifact " + event.getArtifact() + " from " + event.getRepository() );
      }
  
      public void artifactDownloaded( RepositoryEvent event )
      {
          requireNonNull( event, "event cannot be null" );
         out.println( "Downloaded artifact " + event.getArtifact() + " from " + event.getRepository() );
     }
 
     public void artifactResolving( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Resolving artifact " + event.getArtifact() );
     }
 
     public void metadataDeployed( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Deployed " + event.getMetadata() + " to " + event.getRepository() );
     }
 
     public void metadataDeploying( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Deploying " + event.getMetadata() + " to " + event.getRepository() );
     }
 
     public void metadataInstalled( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Installed " + event.getMetadata() + " to " + event.getFile() );
     }
 
     public void metadataInstalling( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Installing " + event.getMetadata() + " to " + event.getFile() );
     }
 
     public void metadataInvalid( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Invalid metadata " + event.getMetadata() );
     }
 
     public void metadataResolved( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Resolved metadata " + event.getMetadata() + " from " + event.getRepository() );
     }
 
     public void metadataResolving( RepositoryEvent event )
     {
         requireNonNull( event, "event cannot be null" );
         out.println( "Resolving metadata " + event.getMetadata() + " from " + event.getRepository() );
     }
 
 }