/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.apache.oodt.cas.resource.monitor;

//OODT imports
import org.apache.oodt.cas.resource.noderepo.XmlNodeRepositoryFactory;
import org.apache.oodt.cas.resource.util.GenericResourceManagerObjectFactory;

//JDK imports
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * @author woollard
 * @author bfoster
 * @version $Revision$
 * 
 * <p>
 * Creates implementations of {@link AssignmentMonitor}s.
 * </p>
 * 
 */
public class AssignmentMonitorFactory implements MonitorFactory {

    private static final Logger LOG = Logger
            .getLogger(AssignmentMonitorFactory.class.getName());

    /*
     * (non-Javadoc)
     * 
     * @see
     * gov.nasa.jpl.oodt.cas.resource.monitor.MonitorFactory#createMonitor()
     */
    public AssignmentMonitor createMonitor() {
        try {
            String nodeRepoFactoryStr = System.getProperty(
                    "gov.nasa.jpl.oodt.cas.resource.nodes.repo.factory",
                    XmlNodeRepositoryFactory.class.getCanonicalName());
            return new AssignmentMonitor(GenericResourceManagerObjectFactory
                    .getNodeRepositoryFromFactory(nodeRepoFactoryStr)
                    .loadNodes());
        } catch (Exception e) {
            LOG.log(Level.SEVERE, "Failed to create Assignment Monitor : "
                    + e.getMessage(), e);
            return null;
        }
    }

}