/*
* 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.management;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.patching.PatchingException;
import org.jboss.as.patching.installation.InstallationManager;
import org.jboss.as.patching.installation.InstalledIdentity;
import org.jboss.as.patching.installation.Layer;
import org.jboss.as.patching.installation.PatchableTarget;
import org.jboss.as.patching.logging.PatchLogger;
import org.jboss.as.patching.metadata.PatchXml;
import org.jboss.as.patching.tool.PatchingHistory;
import org.jboss.dmr.ModelNode;
/**
* This handler removes the part of the history which is inactive.
*
* @author Alexey Loubyansky
*/
public class LocalAgeoutHistoryHandler extends PatchStreamResourceOperationStepHandler {
public static final LocalAgeoutHistoryHandler INSTANCE = new LocalAgeoutHistoryHandler();
static final FilenameFilter ALL = new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return true;
}
};
static final FilenameFilter HISTORY_FILTER = new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
if (PatchXml.PATCH_XML.equals(name) || PatchXml.ROLLBACK_XML.equals(name)) {
return false;
}
return true;
}
};
@Override
protected void execute(OperationContext context, ModelNode operation, InstallationManager instMgr, String patchStream) throws OperationFailedException {
try {
if (patchStream != null) {
final InstalledIdentity installedIdentity = instMgr.getInstalledIdentity(patchStream, null);
ageOutHistory(installedIdentity);
} else {
for (InstalledIdentity installedIdentity : instMgr.getInstalledIdentities()) {
ageOutHistory(installedIdentity);
}
}
} catch (PatchingException e) {
throw new IllegalStateException(PatchLogger.ROOT_LOGGER.failedToLoadIdentity(), e);
}
context.completeStep(OperationContext.RollbackHandler.NOOP_ROLLBACK_HANDLER);
}
protected void ageOutHistory(final InstalledIdentity installedIdentity) {
final PatchableTarget.TargetInfo info;
try {
info = installedIdentity.getIdentity().loadTargetInfo();
} catch (IOException e) {
throw new IllegalStateException(PatchLogger.ROOT_LOGGER.failedToLoadInfo(installedIdentity.getIdentity().getName()), e);
}
final PatchingHistory.Iterator i = PatchingHistory.Factory.iterator(installedIdentity, info);
if(i.hasNextCP()) {
i.nextCP();
// everything else down to the base is inactive
while(i.hasNext()) {
final PatchingHistory.Entry entry = i.next();
final Map<String, String> layerPatches = entry.getLayerPatches();
final List<DeleteOp> ops = new ArrayList<>();
if (!layerPatches.isEmpty()) {
for (String layerName : layerPatches.keySet()) {
final Layer layer = installedIdentity.getLayer(layerName);
if (layer == null) {
// if an identity is missing a layer that means either it was re-configured and the layer was removed
// or the layer in the patch is optional and may be missing on the disk
// we haven't had this case yet, not sure how critical this is to terminate the process of cleaning up
throw new IllegalStateException(PatchLogger.ROOT_LOGGER.layerNotFound(layerName));
}
final File patchDir = layer.getDirectoryStructure().getModulePatchDirectory(layerPatches.get(layerName));
if (patchDir.exists()) {
ops.add(new DeleteOp(patchDir, ALL));
}
}
}
final File patchHistoryDir = installedIdentity.getInstalledImage().getPatchHistoryDir(entry.getPatchId());
if (patchHistoryDir.exists()) {
ops.add(new DeleteOp(patchHistoryDir, HISTORY_FILTER));
}
try {
DeleteOp.execute(ops);
} catch (IOException e) {
throw new IllegalStateException(e);
}
}
}
}
}