package org.apache.maven.archiva.transaction;
/*
* 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.commons.io.FileUtils;
import org.codehaus.plexus.digest.Digester;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
/**
* Event to copy a file.
*
* @author <a href="mailto:brett@apache.org">Brett Porter</a>
* @author <a href="mailto:carlos@apache.org">Carlos Sanchez</a>
* @version $Id: CopyFileEvent.java 636996 2008-03-14 05:34:09Z joakime $
*/
public class CopyFileEvent
extends AbstractTransactionEvent
{
private final File source;
private final File destination;
/**
*
* @param source
* @param destination
* @param digesters {@link List}<{@link Digester}> digesters to use for checksumming
*/
public CopyFileEvent( File source, File destination, List digesters )
{
super( digesters );
this.source = source;
this.destination = destination;
}
public void commit()
throws IOException
{
createBackup( destination );
mkDirs( destination.getParentFile() );
FileUtils.copyFile( source, destination );
createChecksums( destination, true );
copyChecksums();
copyChecksum( "asc" );
}
/**
* Copy checksums of source file with all digesters if exist
*
* @throws IOException
*/
private void copyChecksums()
throws IOException
{
Iterator it = getDigesters().iterator();
while ( it.hasNext() )
{
Digester digester = (Digester) it.next();
copyChecksum( getDigesterFileExtension( digester ) );
}
}
/**
* Copy checksum of source file with extension provided if exists
*
* @param extension
* @return whether the checksum exists or not
* @throws IOException
*/
private boolean copyChecksum( String extension )
throws IOException
{
File checksumSource = new File( source.getAbsolutePath() + "." + extension );
if ( checksumSource.exists() )
{
File checksumDestination = new File( destination.getAbsolutePath() + "." + extension );
FileUtils.copyFile( checksumSource, checksumDestination );
return true;
}
return false;
}
public void rollback()
throws IOException
{
destination.delete();
revertFilesCreated();
revertMkDirs();
restoreBackups();
}
}