/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, 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.modcluster;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.descriptions.DescriptionProvider;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.Property;
// implements ModelQueryOperationHandler, DescriptionProvider
public class ModClusterRemoveMetric implements OperationStepHandler, DescriptionProvider {
static final ModClusterRemoveMetric INSTANCE = new ModClusterRemoveMetric();
@Override
public ModelNode getModelDescription(Locale locale) {
return ModClusterSubsystemDescriptions.getRemoveMetricDescription(locale);
}
@Override
public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
// Look for the dynamic-load-provider
final ModelNode dynamicLoadProvider = context.readResourceForUpdate(PathAddress.EMPTY_ADDRESS).getModel()
.get(CommonAttributes.DYNAMIC_LOAD_PROVIDER);
String type = null;
if (dynamicLoadProvider.isDefined()) {
List<Property> list = operation.asPropertyList();
Iterator<Property> it = list.iterator();
while (it.hasNext()) {
Property prop = it.next();
if (prop.getName().equals("type")) {
type = prop.getValue().asString();
break;
}
}
if (type != null) {
removeMetric(dynamicLoadProvider, type);
}
if (!dynamicLoadProvider.get(CommonAttributes.LOAD_METRIC).isDefined()
&& !dynamicLoadProvider.get(CommonAttributes.CUSTOM_LOAD_METRIC).isDefined()) {
context.readResourceForUpdate(PathAddress.EMPTY_ADDRESS).getModel()
.remove(CommonAttributes.DYNAMIC_LOAD_PROVIDER);
}
}
if (context.isNormalServer()) {
context.reloadRequired();
}
context.completeStep(new OperationContext.RollbackHandler() {
@Override
public void handleRollback(OperationContext context, ModelNode operation) {
if (context.isNormalServer()) {
context.revertReloadRequired();
}
}
});
}
private void removeMetric(ModelNode dynamicLoadProvider, String type) {
List<ModelNode> list = dynamicLoadProvider.get(CommonAttributes.LOAD_METRIC).asList();
List<ModelNode> newlist = Collections.<ModelNode> emptyList();
dynamicLoadProvider.get(CommonAttributes.LOAD_METRIC).set(newlist);
Iterator<ModelNode> it = list.iterator();
while (it.hasNext()) {
ModelNode node = it.next();
if (!node.get("type").asString().equals(type)) {
dynamicLoadProvider.get(CommonAttributes.LOAD_METRIC).add(node);
}
}
list = dynamicLoadProvider.get(CommonAttributes.LOAD_METRIC).asList();
if (list.isEmpty()) {
dynamicLoadProvider.remove(CommonAttributes.LOAD_METRIC);
}
}
}