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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* Licensed 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.onosproject.net.topology;
import org.onosproject.net.AnnotationKeys;
/**
* Link weight for measuring link cost using the link metric annotation.
*/
public class MetricLinkWeight implements LinkWeight {
@Override
public double weight(TopologyEdge edge) {
String v = edge.link().annotations().value(AnnotationKeys.METRIC);
try {
return v != null ? Double.parseDouble(v) : 1;
} catch (NumberFormatException e) {
return 1;
}
}
}
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