package org.apache.archiva.consumers.core;
   
   /*
    * 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.admin.model.beans.ManagedRepository;
  import org.apache.archiva.common.plexusbridge.DigesterUtils;
  import org.apache.archiva.common.plexusbridge.PlexusSisuBridge;
  import org.apache.archiva.common.plexusbridge.PlexusSisuBridgeException;
  import org.apache.archiva.consumers.AbstractMonitoredConsumer;
  import org.apache.archiva.consumers.ConsumerException;
  import org.apache.archiva.consumers.KnownRepositoryContentConsumer;
  import org.codehaus.plexus.digest.ChecksumFile;
  import org.codehaus.plexus.digest.Digester;
  import org.codehaus.plexus.digest.DigesterException;
  import org.springframework.context.annotation.Scope;
  import org.springframework.stereotype.Service;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.annotation.PostConstruct;
  import javax.inject.Inject;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  /**
   * ValidateChecksumConsumer - validate the provided checksum against the file it represents.
   *
   *
   */
  @Service( "knownRepositoryContentConsumer#validate-checksums" )
  @Scope( "prototype" )
  public class ValidateChecksumConsumer
      extends AbstractMonitoredConsumer
      implements KnownRepositoryContentConsumer
  {
      private Logger log = LoggerFactory.getLogger( ValidateChecksumConsumer.class );
  
      private static final String NOT_VALID_CHECKSUM = "checksum-not-valid";
  
      private static final String CHECKSUM_NOT_FOUND = "checksum-not-found";
  
      private static final String CHECKSUM_DIGESTER_FAILURE = "checksum-digester-failure";
  
      private static final String CHECKSUM_IO_ERROR = "checksum-io-error";
  
      private String id = "validate-checksums";
  
      private String description = "Validate checksums against file.";
  
      private ChecksumFile checksum;
  
      private List<Digester> allDigesters;
  
      @Inject
      private PlexusSisuBridge plexusSisuBridge;
  
      @Inject
      private DigesterUtils digesterUtils;
  
      private File repositoryDir;
  
      private List<String> includes;
  
      @Override
      public String getId()
      {
          return this.id;
      }
  
      @Override
      public String getDescription()
      {
          return this.description;
      }
  
      @Override
      public void beginScan( ManagedRepository repository, Date whenGathered )
          throws ConsumerException
     {
         this.repositoryDir = new File( repository.getLocation() );
     }
 
     @Override
     public void beginScan( ManagedRepository repository, Date whenGathered, boolean executeOnEntireRepo )
         throws ConsumerException
     {
         beginScan( repository, whenGathered );
     }
 
     @Override
     public void completeScan()
     {
         /* nothing to do */
     }
 
     @Override
     public void completeScan( boolean executeOnEntireRepo )
     {
         completeScan();
     }
 
     @Override
     public List<String> getExcludes()
     {
         return null;
     }
 
     @Override
     public List<String> getIncludes()
     {
         return this.includes;
     }
 
     @Override
     public void processFile( String path )
         throws ConsumerException
     {
         File checksumFile = new File( this.repositoryDir, path );
         try
         {
             if ( !checksum.isValidChecksum( checksumFile ) )
             {
                 log.warn( "The checksum for {} is invalid.", checksumFile );
                 triggerConsumerWarning( NOT_VALID_CHECKSUM, "The checksum for " + checksumFile + " is invalid." );
             }
         }
         catch ( FileNotFoundException e )
         {
             log.error( "File not found during checksum validation: ", e );
             triggerConsumerError( CHECKSUM_NOT_FOUND, "File not found during checksum validation: " + e.getMessage() );
         }
         catch ( DigesterException e )
         {
             log.error( "Digester failure during checksum validation on {}", checksumFile );
             triggerConsumerError( CHECKSUM_DIGESTER_FAILURE,
                                   "Digester failure during checksum validation on " + checksumFile );
         }
         catch ( IOException e )
         {
             log.error( "Checksum I/O error during validation on {}", checksumFile );
             triggerConsumerError( CHECKSUM_IO_ERROR, "Checksum I/O error during validation on " + checksumFile );
         }
     }
 
     @Override
     public void processFile( String path, boolean executeOnEntireReDpo )
         throws Exception
     {
         processFile( path );
     }
 
     @PostConstruct
     public void initialize()
         throws PlexusSisuBridgeException
     {
         checksum = plexusSisuBridge.lookup( ChecksumFile.class );
         List<Digester> allDigesters = new ArrayList<>( digesterUtils.getAllDigesters() );
         includes = new ArrayList<>( allDigesters.size() );
         for ( Digester digester : allDigesters )
         {
             includes.add( "**/*" + digester.getFilenameExtension() );
         }
     }
 }