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Diffstat (limited to 'framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/MetricLinkWeight.java')
-rw-r--r-- | framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/MetricLinkWeight.java | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/MetricLinkWeight.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/MetricLinkWeight.java new file mode 100644 index 00000000..8463e087 --- /dev/null +++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/MetricLinkWeight.java @@ -0,0 +1,36 @@ +/* + * 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; + } + } +} + |