package org.apache.archiva.consumers.lucene;
   
   /*
    * 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 org.apache.archiva.common.utils.PathUtil;
  import org.apache.archiva.configuration.ArchivaConfiguration;
  import org.apache.archiva.configuration.ConfigurationNames;
  import org.apache.archiva.configuration.FileTypes;
  import org.apache.archiva.consumers.AbstractMonitoredConsumer;
  import org.apache.archiva.consumers.ConsumerException;
  import org.apache.archiva.consumers.KnownRepositoryContentConsumer;
  import org.apache.archiva.indexer.UnsupportedBaseContextException;
  import org.apache.archiva.components.registry.Registry;
  import org.apache.archiva.components.registry.RegistryListener;
  import org.apache.archiva.components.taskqueue.TaskQueueException;
  import org.apache.archiva.repository.ManagedRepository;
  import org.apache.archiva.repository.RepositoryType;
  import org.apache.archiva.scheduler.ArchivaTaskScheduler;
  import org.apache.archiva.scheduler.indexing.ArtifactIndexingTask;
  import org.apache.maven.index.context.IndexingContext;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.context.annotation.Scope;
  import org.springframework.stereotype.Service;
  
  import javax.annotation.PostConstruct;
  import javax.inject.Inject;
  import javax.inject.Named;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.Date;
  import java.util.List;
  
  /**
   * Consumer for indexing the repository to provide search and IDE integration features.
   */
  @Service( "knownRepositoryContentConsumer#index-content" )
  @Scope( "prototype" )
  public class NexusIndexerConsumer
      extends AbstractMonitoredConsumer
      implements KnownRepositoryContentConsumer, RegistryListener
  {
  
  
      private Logger log = LoggerFactory.getLogger( getClass() );
  
      private ArchivaConfiguration configuration;
  
      private FileTypes filetypes;
  
      private Path managedRepository;
  
      private ArchivaTaskScheduler<ArtifactIndexingTask> scheduler;
  
      private IndexingContext indexingContext;
  
      private List<String> includes = new ArrayList<>( 0 );
  
      private ManagedRepository repository;
  
      @Inject
      public NexusIndexerConsumer(
          @Named( value = "archivaTaskScheduler#indexing" ) ArchivaTaskScheduler<ArtifactIndexingTask> scheduler,
          @Named( value = "archivaConfiguration" ) ArchivaConfiguration configuration, FileTypes filetypes)
      {
          this.configuration = configuration;
          this.filetypes = filetypes;
          this.scheduler = scheduler;
      }
  
      @Override
      public String getDescription()
      {
          return "Indexes the repository to provide search and IDE integration features";
      }
  
      @Override
      public String getId()
      {
          return "index-content";
     }
 
     @Override
     public void beginScan( ManagedRepository repository, Date whenGathered )
         throws ConsumerException
     {
         this.repository = repository;
         managedRepository = PathUtil.getPathFromUri( repository.getLocation() );
 
         try
         {
             log.info( "Creating indexing context for repo : {}", repository.getId() );
             if (repository.getType()== RepositoryType.MAVEN) {
                 indexingContext = repository.getIndexingContext().getBaseContext(IndexingContext.class);
             } else  {
                 indexingContext= null;
             }
         } catch (UnsupportedBaseContextException e) {
             log.error("Bad repository type. Not nexus indexer compatible.");
             throw new ConsumerException("Bad repository type "+repository.getType());
         }
     }
 
     @Override
     public void beginScan( ManagedRepository repository, Date whenGathered, boolean executeOnEntireRepo )
         throws ConsumerException
     {
         if ( executeOnEntireRepo )
         {
             beginScan( repository, whenGathered );
         }
         else
         {
             this.repository = repository;
             managedRepository = Paths.get( repository.getLocation() );
         }
     }
 
     @Override
     public void processFile( String path )
         throws ConsumerException
     {
         Path artifactFile = managedRepository.resolve(path);
 
         ArtifactIndexingTask task =
             new ArtifactIndexingTask( repository, artifactFile, ArtifactIndexingTask.Action.ADD, repository.getIndexingContext() );
         try
         {
             log.debug( "Queueing indexing task '{}' to add or update the artifact in the index.", task );
             scheduler.queueTask( task );
         }
         catch ( TaskQueueException e )
         {
             throw new ConsumerException( e.getMessage(), e );
         }
     }
 
     @Override
     public void processFile( String path, boolean executeOnEntireRepo )
         throws Exception
     {
         if ( executeOnEntireRepo )
         {
             processFile( path );
         }
         else
         {
             Path artifactFile = managedRepository.resolve(path);
 
             // specify in indexing task that this is not a repo scan request!
             ArtifactIndexingTask task =
                 new ArtifactIndexingTask( repository, artifactFile, ArtifactIndexingTask.Action.ADD,
                                           repository.getIndexingContext(), false );
             // only update index we don't need to scan the full repo here
             task.setOnlyUpdate( true );
             try
             {
                 log.debug( "Queueing indexing task '{}' to add or update the artifact in the index.", task );
                 scheduler.queueTask( task );
             }
             catch ( TaskQueueException e )
             {
                 throw new ConsumerException( e.getMessage(), e );
             }
         }
     }
 
     @Override
     public void completeScan()
     {
         ArtifactIndexingTask task =
             new ArtifactIndexingTask( repository, null, ArtifactIndexingTask.Action.FINISH, repository.getIndexingContext());
         try
         {
             log.debug( "Queueing indexing task '{}' to finish indexing.", task );
             scheduler.queueTask( task );
         }
         catch ( TaskQueueException e )
         {
             log.error( "Error queueing task: {}: {}", task, e.getMessage(), e );
         }
     }
 
     @Override
     public void completeScan( boolean executeOnEntireRepo )
     {
         if ( executeOnEntireRepo )
         {
             completeScan();
         }
 
         // else, do nothing as the context will be closed when indexing task is executed if not a repo scan request!
     }
 
     @Override
     public List<String> getExcludes()
     {
         return Collections.emptyList();
     }
 
     @Override
     public void afterConfigurationChange( Registry registry, String propertyName, Object propertyValue )
     {
         if ( ConfigurationNames.isRepositoryScanning( propertyName ) )
         {
             initIncludes();
         }
     }
 
     @Override
     public void beforeConfigurationChange( Registry registry, String propertyName, Object propertyValue )
     {
         /* do nothing */
     }
 
     private void initIncludes()
     {
         List<String> indexable = filetypes.getFileTypePatterns( FileTypes.INDEXABLE_CONTENT );
         List<String> artifacts = filetypes.getFileTypePatterns( FileTypes.ARTIFACTS );
 
         includes = new ArrayList<>( indexable.size() + artifacts.size() );
 
         includes.addAll( indexable );
 
         includes.addAll( artifacts );
     }
 
     @PostConstruct
     public void initialize()
     {
         configuration.addChangeListener( this );
 
         initIncludes();
     }
 
     @Override
     public List<String> getIncludes()
     {
         return includes;
     }
 
 
     private IndexingContext getIndexingContext()
         throws ConsumerException
     {
 
         if ( this.indexingContext == null )
         {
             try
             {
                 indexingContext = repository.getIndexingContext().getBaseContext(IndexingContext.class);
             } catch (UnsupportedBaseContextException e) {
                 log.error("Bad repository type. Not nexus indexer compatible. "+repository.getType());
                 throw new ConsumerException("Bad repository type "+repository.getType());
             }
         }
         return indexingContext;
     }
 }