/*
* RHQ Management Platform
* Copyright (C) 2011 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.core.pc.drift.sync;
import static org.rhq.core.util.file.FileUtil.purge;
import java.io.File;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rhq.core.domain.drift.DriftDefinition;
import org.rhq.core.pc.inventory.InventoryManager;
import org.rhq.core.pc.inventory.ResourceContainer;
/**
* As its name implies, this class synchronizes drift definitions at start up or any
* time when the plugin container is not fully initialized. If the plugin container is not
* fully initialized, then that means {@link org.rhq.core.pc.drift.DriftManager DriftManager}
* is not available to call into to schedule or unschedule drift detection.
* StartupSynchronizer therefore deals only with the drift definitions attached to
* {@link ResourceContainer} objects. As part of its initialization DriftManager
* creates or recreates detection schedules from the definitions attached to the
* resource containers.
*/
class StartupSynchronizer implements DriftSynchronizer {
private final Log log = LogFactory.getLog(StartupSynchronizer.class);
private InventoryManager inventoryMgr;
private File snapshotsDir;
public StartupSynchronizer(InventoryManager inventoryManager, File dataDirectory) {
inventoryMgr = inventoryManager;
snapshotsDir = new File(dataDirectory, "changesets");
}
@Override
public List<DriftDefinition> getDeletedDefinitions(int resourceId, Set<DriftDefinition> definitionsFromServer) {
log.debug("Checking for drift definitions that need to be deleted for resource id " + resourceId);
List<DriftDefinition> deleted = new LinkedList<DriftDefinition>();
ResourceContainer container = inventoryMgr.getResourceContainer(resourceId);
for (DriftDefinition c : container.getDriftDefinitions()) {
if (!definitionsFromServer.contains(c)) {
if (log.isDebugEnabled()) {
log.debug("Detected stale drift definition that needs to be purged - " + toString(resourceId, c));
}
deleted.add(c);
}
}
return deleted;
}
@Override
public void purgeFromLocalInventory(int resourceId, List<DriftDefinition> definitions) {
log.debug("Preparing to purge from local inventory drift definitions that have been deleted on the server "
+ "for resource id " + resourceId);
ResourceContainer container = inventoryMgr.getResourceContainer(resourceId);
File resourceSnapshotsDir = new File(snapshotsDir, Integer.toString(resourceId));
for (DriftDefinition c : definitions) {
if (log.isDebugEnabled()) {
log.debug("Purging " + toString(resourceId, c) + " from local inventory");
}
container.removeDriftDefinition(c);
File snapshotDir = new File(resourceSnapshotsDir, c.getName());
if (snapshotDir.exists()) {
if (log.isDebugEnabled()) {
log.debug("Puring snapshot directory " + snapshotDir.getPath());
}
purge(snapshotDir, true);
}
}
}
@Override
public List<DriftDefinition> getAddedDefinitions(int resourceId, Set<DriftDefinition> definitionsFromServer) {
log.debug("Checking for drift definitions that need to be added for resource id " + resourceId);
ResourceContainer container = inventoryMgr.getResourceContainer(resourceId);
List<DriftDefinition> added = new LinkedList<DriftDefinition>();
for (DriftDefinition c : definitionsFromServer) {
if (!container.containsDriftDefinition(c)) {
if (log.isDebugEnabled()) {
log.debug("Detected new drift definition that needs to be added to local inventory - "
+ toString(resourceId, c));
}
added.add(c);
}
}
return added;
}
@Override
public void addToLocalInventory(int resourceId, List<DriftDefinition> definitions) {
log.debug("Adding drift definitions to local inventory for resource id " + resourceId);
ResourceContainer container = inventoryMgr.getResourceContainer(resourceId);
for (DriftDefinition c : definitions) {
if (log.isDebugEnabled()) {
log.debug("Adding " + toString(resourceId, c) + " to local inventory");
}
container.addDriftDefinition(c);
}
}
@Override
public void syncChangeSetContent() {
}
private String toString(int rid, DriftDefinition c) {
return "DriftDefinition[id: " + c.getId() + ", name: " + c.getName() + ", resourceId: " + rid + "]";
}
}