/**
* Copyright (C) 2008 Progress Software, Inc. All rights reserved.
* http://fusesource.com
*
* The software in this package is published under the terms of the AGPL license
* a copy of which has been included with this distribution in the license.txt file.
*/
package org.fusesource.cloudmix.common.controller.constraints.agent;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.fusesource.cloudmix.common.controller.AgentController;
import org.fusesource.cloudmix.common.controller.FeatureController;
/**
* checks that no "owning" feature is already installed on a given agents
*/
public class AgentOwnedByFeatureChecker implements IAgentConstraintChecker {
private static final transient Log LOG = LogFactory.getLog(AgentOwnedByFeatureChecker.class);
public Collection<AgentController> applyConstraint(String profileId,
FeatureController fc,
Collection<AgentController> someCandidates) {
if(LOG.isDebugEnabled())
LOG.debug("filtering on owned by: " + fc.getDetails().getId() + someCandidates);
List<AgentController> acceptedCandidates = null;
if (someCandidates == null) {
acceptedCandidates = new ArrayList<AgentController>(0);
}
else if (profileId == null || fc == null || someCandidates.size() == 0) {
acceptedCandidates = new ArrayList<AgentController>(someCandidates);
}
else
{
acceptedCandidates = new ArrayList<AgentController>();
for (AgentController ac : someCandidates) {
if (!ac.isLockedByOwningFeature()) {
acceptedCandidates.add(ac);
}
}
}
if(LOG.isDebugEnabled())
LOG.debug("filtering on owned by: " + fc.getDetails().getId() + acceptedCandidates);
return acceptedCandidates;
}
}