/*
* 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.controller.access;
import java.util.Set;
import org.jboss.as.controller.PathAddress;
/**
* Encapsulates information about the relationship of a resource to hosts in a domain.
*
* @author Brian Stansberry (c) 2013 Red Hat Inc.
*/
public interface HostEffect {
/**
* Gets the address of the resource whose hosts relationships are described
* by this object.
*
* @return the resource address. Will not be {@code null}
*/
PathAddress getResourceAddress();
/**
* Gets whether the resource logically affects all hosts, including hosts that may not presently exist.
* <p>
* Domain level resources (i.e. those that persist configuration to domain.xml) logically affect all hosts
* even if the servers running on some or all of the current set of hosts are not affected by the resource.
* </p>
*
* @return {@code true} if the resource logically affects all hosts; {@code false} if the resource is
* logically limited to a set of hosts.
*/
boolean isHostEffectGlobal();
/**
* Gets whether the resource is related to a specific server (either a server resource or a server-config).
*
* @return {@code true} if the resource relates to a specific server.
*/
boolean isServerEffect();
/**
* Gets the names of the hosts affected by this resource, or {@code null} if
* {@link #isHostEffectGlobal()} returns {@code true}
*
* @return the names of the hosts, or {@code null} if {@link #isHostEffectGlobal()} returns
* {@code true}. Will not return {@code null} if {@link #isHostEffectGlobal()} returns
* {@code false}, although it may return an empty set.
*/
Set<String> getAffectedHosts();
}