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/*
* Copyright 2014 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.store.trivial;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Service;
import org.onosproject.common.DefaultTopology;
import org.onosproject.event.Event;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DeviceId;
import org.onosproject.net.DisjointPath;
import org.onosproject.net.Link;
import org.onosproject.net.Path;
import org.onosproject.net.provider.ProviderId;
import org.onosproject.net.topology.ClusterId;
import org.onosproject.net.topology.GraphDescription;
import org.onosproject.net.topology.LinkWeight;
import org.onosproject.net.topology.Topology;
import org.onosproject.net.topology.TopologyCluster;
import org.onosproject.net.topology.TopologyEvent;
import org.onosproject.net.topology.TopologyGraph;
import org.onosproject.net.topology.TopologyStore;
import org.onosproject.net.topology.TopologyStoreDelegate;
import org.onosproject.store.AbstractStore;
import org.slf4j.Logger;
import java.util.List;
import java.util.Map;
import java.util.Set;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Manages inventory of topology snapshots using trivial in-memory
* structures implementation.
*/
@Component(immediate = true)
@Service
public class SimpleTopologyStore
extends AbstractStore<TopologyEvent, TopologyStoreDelegate>
implements TopologyStore {
private final Logger log = getLogger(getClass());
private volatile DefaultTopology current;
@Activate
public void activate() {
log.info("Started");
}
@Deactivate
public void deactivate() {
log.info("Stopped");
}
@Override
public Topology currentTopology() {
return current;
}
@Override
public boolean isLatest(Topology topology) {
// Topology is current only if it is the same as our current topology
return topology == current;
}
@Override
public TopologyGraph getGraph(Topology topology) {
return defaultTopology(topology).getGraph();
}
@Override
public Set<TopologyCluster> getClusters(Topology topology) {
return defaultTopology(topology).getClusters();
}
@Override
public TopologyCluster getCluster(Topology topology, ClusterId clusterId) {
return defaultTopology(topology).getCluster(clusterId);
}
@Override
public Set<DeviceId> getClusterDevices(Topology topology, TopologyCluster cluster) {
return defaultTopology(topology).getClusterDevices(cluster);
}
@Override
public Set<Link> getClusterLinks(Topology topology, TopologyCluster cluster) {
return defaultTopology(topology).getClusterLinks(cluster);
}
@Override
public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst) {
return defaultTopology(topology).getPaths(src, dst);
}
@Override
public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst,
LinkWeight weight) {
return defaultTopology(topology).getPaths(src, dst, weight);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst) {
return defaultTopology(topology).getDisjointPaths(src, dst);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst,
LinkWeight weight) {
return defaultTopology(topology).getDisjointPaths(src, dst, weight);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst,
Map<Link, Object> riskProfile) {
return defaultTopology(topology).getDisjointPaths(src, dst, riskProfile);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst,
LinkWeight weight, Map<Link, Object> riskProfile) {
return defaultTopology(topology).getDisjointPaths(src, dst, weight, riskProfile);
}
@Override
public boolean isInfrastructure(Topology topology, ConnectPoint connectPoint) {
return defaultTopology(topology).isInfrastructure(connectPoint);
}
@Override
public boolean isBroadcastPoint(Topology topology, ConnectPoint connectPoint) {
return defaultTopology(topology).isBroadcastPoint(connectPoint);
}
@Override
public TopologyEvent updateTopology(ProviderId providerId,
GraphDescription graphDescription,
List<Event> reasons) {
// First off, make sure that what we're given is indeed newer than
// what we already have.
if (current != null && graphDescription.timestamp() < current.time()) {
return null;
}
// Have the default topology construct self from the description data.
DefaultTopology newTopology =
new DefaultTopology(providerId, graphDescription);
// Promote the new topology to current and return a ready-to-send event.
synchronized (this) {
current = newTopology;
return new TopologyEvent(TopologyEvent.Type.TOPOLOGY_CHANGED,
current, reasons);
}
}
// Validates the specified topology and returns it as a default
private DefaultTopology defaultTopology(Topology topology) {
if (topology instanceof DefaultTopology) {
return (DefaultTopology) topology;
}
throw new IllegalArgumentException("Topology class " + topology.getClass() +
" not supported");
}
}
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