/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, 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.host.controller.ignored;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.SimpleResourceDefinition;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.controller.registry.Resource;
import org.jboss.as.domain.controller.LocalHostControllerInfo;
import org.jboss.as.host.controller.descriptions.HostRootDescription;
/**
* Registry for excluded domain-level resources. To be used by slave Host Controllers to ignore requests
* for particular resources that the host cannot understand. This is a mechanism to allow hosts running earlier
* AS releases to function as slaves in domains whose master is in a later release.
*
* @author Brian Stansberry (c) 2011 Red Hat Inc.
*/
public class IgnoredDomainResourceRegistry {
private final LocalHostControllerInfo localHostControllerInfo;
private volatile IgnoredDomainResourceRoot rootResource;
public IgnoredDomainResourceRegistry(LocalHostControllerInfo localHostControllerInfo) {
this.localHostControllerInfo = localHostControllerInfo;
}
/**
* Returns whether this host should ignore operations from the master domain controller that target
* the given address.
*
* @param address the resource address. Cannot be {@code null}
*
* @return {@code true} if the operation should be ignored; {@code false} otherwise
*/
public boolean isResourceExcluded(final PathAddress address) {
boolean result = false;
if (!localHostControllerInfo.isMasterDomainController() && address.size() > 0) {
IgnoredDomainResourceRoot root = this.rootResource;
PathElement firstElement = address.getElement(0);
IgnoreDomainResourceTypeResource typeResource = root == null ? null : root.getChildInternal(firstElement.getKey());
if (typeResource != null) {
result = typeResource.hasName(firstElement.getValue());
}
}
return result;
}
public void registerResources(final ManagementResourceRegistration parentRegistration) {
parentRegistration.registerSubModel(new ResourceDefinition());
}
public Resource.ResourceEntry getRootResource() {
IgnoredDomainResourceRoot root = new IgnoredDomainResourceRoot(this);
this.rootResource = root;
return root;
}
void publish(IgnoredDomainResourceRoot root) {
this.rootResource = root;
}
boolean isMaster() {
return localHostControllerInfo.isMasterDomainController();
}
private class ResourceDefinition extends SimpleResourceDefinition {
public ResourceDefinition() {
super(IgnoredDomainResourceRoot.PATH_ELEMENT, HostRootDescription.getResourceDescriptionResolver(ModelDescriptionConstants.IGNORED_RESOURCES));
}
@Override
public void registerChildren(ManagementResourceRegistration resourceRegistration) {
resourceRegistration.registerSubModel(new IgnoredDomainTypeResourceDefinition());
}
}
}