| /* |
| * 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 static org.slf4j.LoggerFactory.getLogger; |
| |
| import java.util.Map; |
| |
| import org.onosproject.net.AbstractDescription; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.SparseAnnotations; |
| import org.slf4j.Logger; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Maps; |
| |
| /** |
| * Default implementation of an immutable topology graph data carrier. |
| */ |
| public class DefaultGraphDescription extends AbstractDescription |
| implements GraphDescription { |
| |
| private static final Logger log = getLogger(DefaultGraphDescription.class); |
| |
| private final long nanos; |
| private final long creationTime; |
| private final ImmutableSet<TopologyVertex> vertexes; |
| private final ImmutableSet<TopologyEdge> edges; |
| |
| private final Map<DeviceId, TopologyVertex> vertexesById = Maps |
| .newHashMap(); |
| |
| /** |
| * Creates a minimal topology graph description to allow core to construct |
| * and process the topology graph. |
| * |
| * @param nanos time in nanos of when the topology description was created |
| * |
| * @param devices collection of infrastructure devices |
| * |
| * @param links collection of infrastructure links |
| * |
| * @param annotations optional key/value annotations map |
| * |
| */ |
| @Deprecated |
| public DefaultGraphDescription(long nanos, Iterable<Device> devices, |
| Iterable<Link> links, |
| SparseAnnotations... annotations) { |
| this(nanos, System.currentTimeMillis(), devices, links, annotations); |
| } |
| |
| /** |
| * Creates a minimal topology graph description to allow core to construct |
| * and process the topology graph. |
| * |
| * @param nanos time in nanos of when the topology description was created |
| * |
| * @param millis time in millis of when the topology description was created |
| * |
| * @param devices collection of infrastructure devices |
| * |
| * @param links collection of infrastructure links |
| * |
| * @param annotations optional key/value annotations map |
| * |
| */ |
| public DefaultGraphDescription(long nanos, long millis, |
| Iterable<Device> devices, |
| Iterable<Link> links, |
| SparseAnnotations... annotations) { |
| super(annotations); |
| this.nanos = nanos; |
| this.creationTime = millis; |
| this.vertexes = buildVertexes(devices); |
| this.edges = buildEdges(links); |
| vertexesById.clear(); |
| } |
| |
| @Override |
| public long timestamp() { |
| return nanos; |
| } |
| |
| @Override |
| public long creationTime() { |
| return creationTime; |
| } |
| |
| @Override |
| public ImmutableSet<TopologyVertex> vertexes() { |
| return vertexes; |
| } |
| |
| @Override |
| public ImmutableSet<TopologyEdge> edges() { |
| return edges; |
| } |
| |
| // Builds a set of topology vertexes from the specified list of devices |
| private ImmutableSet<TopologyVertex> |
| buildVertexes(Iterable<Device> devices) { |
| ImmutableSet.Builder<TopologyVertex> vertexes = ImmutableSet.builder(); |
| for (Device device : devices) { |
| TopologyVertex vertex = new DefaultTopologyVertex(device.id()); |
| vertexes.add(vertex); |
| vertexesById.put(vertex.deviceId(), vertex); |
| } |
| return vertexes.build(); |
| } |
| |
| // Builds a set of topology vertexes from the specified list of links |
| private ImmutableSet<TopologyEdge> buildEdges(Iterable<Link> links) { |
| ImmutableSet.Builder<TopologyEdge> edges = ImmutableSet.builder(); |
| for (Link link : links) { |
| try { |
| edges.add(new DefaultTopologyEdge(vertexOf(link.src()), |
| vertexOf(link.dst()), |
| link)); |
| } catch (IllegalArgumentException e) { |
| log.debug("Ignoring {}, missing vertex", link); |
| } |
| } |
| return edges.build(); |
| } |
| |
| // Fetches a vertex corresponding to the given connection point device. |
| private TopologyVertex vertexOf(ConnectPoint connectPoint) { |
| DeviceId id = connectPoint.deviceId(); |
| TopologyVertex vertex = vertexesById.get(id); |
| if (vertex == null) { |
| throw new IllegalArgumentException("Vertex missing for " + id); |
| } |
| return vertex; |
| } |
| |
| } |