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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.Description;
import com.google.common.collect.ImmutableSet;
/**
* Describes attribute(s) of a network graph.
*/
public interface GraphDescription extends Description {
/**
* Returns the creation timestamp of the graph description. This is
* expressed in system nanos to allow proper sequencing.
*
* @return graph description creation timestamp
*/
long timestamp();
/**
* Returns the creation timestamp of the graph description. This is
* expressed in system millis to allow proper date and time formatting.
*
* @return graph description creation timestamp in millis
*/
long creationTime();
/**
* Returns the set of topology graph vertexes.
*
* @return set of graph vertexes
*/
ImmutableSet<TopologyVertex> vertexes();
/**
* Returns the set of topology graph edges.
*
* @return set of graph edges
*/
ImmutableSet<TopologyEdge> edges();
}
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