Source code

001package org.apache.archiva.transaction;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.io.File;
023import java.io.IOException;
024import java.util.List;
025
026import org.codehaus.plexus.digest.Digester;
027
028/**
029 * Event for creating a file from a string content.
030 *
031 *
032 */
033public class CreateFileEvent
034    extends AbstractTransactionEvent
035{
036    private final File destination;
037
038    private final String content;
039
040    /**
041     * 
042     * @param content
043     * @param destination
044     * @param digesters {@link List}&lt;{@link Digester}&gt; digesters to use for checksumming 
045     */
046    public CreateFileEvent( String content, File destination, List<? extends Digester> digesters )
047    {
048        super( digesters );
049        this.content = content;
050        this.destination = destination;
051    }
052
053    @Override
054    public void commit()
055        throws IOException
056    {
057        createBackup( destination );
058
059        mkDirs( destination.getParentFile() );
060
061        if ( !destination.exists() && !destination.createNewFile() )
062        {
063            throw new IOException( "Unable to create new file" );
064        }
065
066        writeStringToFile( destination, content );
067
068        createChecksums( destination, true );
069    }
070
071    @Override
072    public void rollback()
073        throws IOException
074    {
075        destination.delete();
076
077        revertFilesCreated();
078
079        revertMkDirs();
080
081        restoreBackups();
082    }
083}