/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, 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.messaging;
import static org.jboss.as.messaging.MessagingMessages.MESSAGES;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import org.jboss.as.controller.AttributeDefinition;
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.operations.global.WriteAttributeHandlers;
import org.jboss.as.controller.registry.AttributeAccess;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.controller.registry.Resource;
import org.jboss.dmr.ModelNode;
/**
* Write attribute handler for attributes that update a discovery group resource.
*
* @author Brian Stansberry (c) 2011 Red Hat Inc.
*/
public class DiscoveryGroupWriteAttributeHandler extends WriteAttributeHandlers.WriteAttributeOperationHandler {
public static final DiscoveryGroupWriteAttributeHandler INSTANCE = new DiscoveryGroupWriteAttributeHandler();
private final Map<String, AttributeDefinition> attributes = new HashMap<String, AttributeDefinition>();
private DiscoveryGroupWriteAttributeHandler() {
for (AttributeDefinition attr : CommonAttributes.DISCOVERY_GROUP_ATTRIBUTES) {
attributes.put(attr.getName(), attr);
}
}
public void registerAttributes(final ManagementResourceRegistration registry, boolean registerRuntimeOnly) {
final EnumSet<AttributeAccess.Flag> flags = EnumSet.of(AttributeAccess.Flag.RESTART_ALL_SERVICES);
for (AttributeDefinition attr : CommonAttributes.DISCOVERY_GROUP_ATTRIBUTES) {
if (registerRuntimeOnly || !attr.getFlags().contains(AttributeAccess.Flag.STORAGE_RUNTIME)) {
registry.registerReadWriteAttribute(attr.getName(), null, this, flags);
}
}
}
@Override
protected void modelChanged(final OperationContext context, final ModelNode operation, final String attributeName,
final ModelNode newValue, final ModelNode currentValue) throws OperationFailedException {
context.addStep(new OperationStepHandler() {
@Override
public void execute(final OperationContext context, final ModelNode operation) throws OperationFailedException {
final AttributeDefinition attr = attributes.get(attributeName);
final Resource resource = context.readResource(PathAddress.EMPTY_ADDRESS);
if(attr.hasAlternative(resource.getModel())) {
context.setRollbackOnly();
throw new OperationFailedException(new ModelNode().set(MESSAGES.altAttributeAlreadyDefined(attributeName)));
}
}
}, OperationContext.Stage.VERIFY);
context.reloadRequired();
if (context.completeStep() != OperationContext.ResultAction.KEEP) {
context.revertReloadRequired();
}
}
@Override
protected void validateValue(String name, ModelNode value) throws OperationFailedException {
AttributeDefinition attr = attributes.get(name);
attr.getValidator().validateParameter(name, value);
}
}