/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.patching.runner;
import static org.jboss.as.patching.IoUtils.NO_CONTENT;
import java.io.File;
import java.util.Arrays;
import org.jboss.as.patching.metadata.ContentModification;
import org.jboss.as.patching.metadata.MiscContentItem;
import org.jboss.as.patching.metadata.ModificationType;
/**
* Task modifying an existing file.
*
* @author Emanuel Muckenhuber
*/
final class FileUpdateTask extends AbstractFileTask {
FileUpdateTask(PatchingTaskDescription description, File target, File backup) {
super(description, target, backup);
}
@Override
ContentModification createRollbackEntry(ContentModification original, MiscContentItem item, byte[] targetHash) {
final ModificationType type;
if (Arrays.equals(NO_CONTENT, item.getContentHash()) && !backup.exists()) {
type = ModificationType.REMOVE;
} else {
type = ModificationType.MODIFY;
}
return new ContentModification(item, targetHash, type, original.getCondition());
}
protected ContentModification getOriginalModification(byte[] targetHash, byte[] itemHash) {
final ContentModification original = super.getOriginalModification(targetHash, itemHash);
final ModificationType type;
if (Arrays.equals(NO_CONTENT, itemHash) && !backup.exists()) {
type = ModificationType.ADD;
} else {
type = ModificationType.MODIFY;
}
return new ContentModification(original.getItem(), original.getTargetHash(), type, original.getCondition());
}
}