/*
* 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.copy;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import org.jboss.as.patching.logging.PatchLogger;
import org.jboss.as.patching.metadata.ContentModification;
import org.jboss.as.patching.metadata.ModificationType;
import org.jboss.as.patching.metadata.ModuleItem;
/**
* Removing a module will create a module.xml containing a <module-absent /> element, which
* will trigger a {@linkplain org.jboss.modules.ModuleNotFoundException} when the
* {@linkplan org.jboss.modules.ModuleLoader} tries to load the module.
*
* @author Emanuel Muckenhuber
*/
class ModuleRemoveTask extends AbstractModuleTask {
ModuleRemoveTask(PatchingTaskDescription description) {
super(description);
}
@Override
protected boolean failOnContentMismatch(PatchingTaskContext context) {
return false;
}
@Override
byte[] apply(PatchingTaskContext context, PatchContentLoader loader) throws IOException {
final File targetDir = context.getTargetFile(contentItem);
if(!targetDir.exists() && ! targetDir.mkdirs()) {
throw PatchLogger.ROOT_LOGGER.cannotCreateDirectory(targetDir.getAbsolutePath());
}
final File moduleXml = new File(targetDir, MODULE_XML);
try (final ByteArrayInputStream is = new ByteArrayInputStream(PatchUtils.getAbsentModuleContent(contentItem))){
return copy(is, moduleXml);
}
}
@Override
protected ContentModification getOriginalModification(byte[] targetHash, byte[] itemHash) {
final ModuleItem original = getContentItem();
final ModuleItem item = new ModuleItem(original.getName(), original.getSlot(), targetHash);
return new ContentModification(item, description.getModification().getTargetHash(), ModificationType.MODIFY, description.getModification().getCondition());
}
@Override
ContentModification createRollbackEntry(ContentModification original, byte[] targetHash, byte[] itemHash) {
final ModuleItem item = createContentItem(contentItem, itemHash);
return new ContentModification(item, targetHash, ModificationType.MODIFY, original.getCondition());
}
}