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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.net.topology.impl;
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.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.Service;
import org.onosproject.net.DisjointPath;
import org.onosproject.net.provider.AbstractListenerProviderRegistry;
import org.onosproject.event.Event;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DeviceId;
import org.onosproject.net.Link;
import org.onosproject.net.Path;
import org.onosproject.net.provider.AbstractProviderService;
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.TopologyListener;
import org.onosproject.net.topology.TopologyProvider;
import org.onosproject.net.topology.TopologyProviderRegistry;
import org.onosproject.net.topology.TopologyProviderService;
import org.onosproject.net.topology.TopologyService;
import org.onosproject.net.topology.TopologyStore;
import org.onosproject.net.topology.TopologyStoreDelegate;
import org.slf4j.Logger;
import java.util.List;
import java.util.Set;
import java.util.Map;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.onosproject.security.AppGuard.checkPermission;
import static org.slf4j.LoggerFactory.getLogger;
import static org.onosproject.security.AppPermission.Type.*;
/**
* Provides basic implementation of the topology SB & NB APIs.
*/
@Component(immediate = true)
@Service
public class TopologyManager
extends AbstractListenerProviderRegistry<TopologyEvent, TopologyListener,
TopologyProvider, TopologyProviderService>
implements TopologyService, TopologyProviderRegistry {
public static final String TOPOLOGY_NULL = "Topology cannot be null";
private static final String DEVICE_ID_NULL = "Device ID cannot be null";
private static final String CLUSTER_ID_NULL = "Cluster ID cannot be null";
private static final String CLUSTER_NULL = "Topology cluster cannot be null";
public static final String CONNECTION_POINT_NULL = "Connection point cannot be null";
public static final String LINK_WEIGHT_NULL = "Link weight cannot be null";
private final Logger log = getLogger(getClass());
private TopologyStoreDelegate delegate = new InternalStoreDelegate();
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected TopologyStore store;
@Activate
public void activate() {
store.setDelegate(delegate);
eventDispatcher.addSink(TopologyEvent.class, listenerRegistry);
log.info("Started");
}
@Deactivate
public void deactivate() {
store.unsetDelegate(delegate);
eventDispatcher.removeSink(TopologyEvent.class);
log.info("Stopped");
}
@Override
public Topology currentTopology() {
checkPermission(TOPOLOGY_READ);
return store.currentTopology();
}
@Override
public boolean isLatest(Topology topology) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
return store.isLatest(topology);
}
@Override
public Set<TopologyCluster> getClusters(Topology topology) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
return store.getClusters(topology);
}
@Override
public TopologyCluster getCluster(Topology topology, ClusterId clusterId) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(topology, CLUSTER_ID_NULL);
return store.getCluster(topology, clusterId);
}
@Override
public Set<DeviceId> getClusterDevices(Topology topology, TopologyCluster cluster) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(topology, CLUSTER_NULL);
return store.getClusterDevices(topology, cluster);
}
@Override
public Set<Link> getClusterLinks(Topology topology, TopologyCluster cluster) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(topology, CLUSTER_NULL);
return store.getClusterLinks(topology, cluster);
}
@Override
public TopologyGraph getGraph(Topology topology) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
return store.getGraph(topology);
}
@Override
public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(src, DEVICE_ID_NULL);
checkNotNull(dst, DEVICE_ID_NULL);
return store.getPaths(topology, src, dst);
}
@Override
public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst, LinkWeight weight) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(src, DEVICE_ID_NULL);
checkNotNull(dst, DEVICE_ID_NULL);
checkNotNull(weight, "Link weight cannot be null");
return store.getPaths(topology, src, dst, weight);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst) {
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(src, DEVICE_ID_NULL);
checkNotNull(dst, DEVICE_ID_NULL);
return store.getDisjointPaths(topology, src, dst);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
DeviceId dst, LinkWeight weight) {
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(src, DEVICE_ID_NULL);
checkNotNull(dst, DEVICE_ID_NULL);
checkNotNull(weight, LINK_WEIGHT_NULL);
return store.getDisjointPaths(topology, src, dst, weight);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst,
Map<Link, Object> riskProfile) {
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(src, DEVICE_ID_NULL);
checkNotNull(dst, DEVICE_ID_NULL);
return store.getDisjointPaths(topology, src, dst, riskProfile);
}
@Override
public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
DeviceId dst, LinkWeight weight,
Map<Link, Object> riskProfile) {
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(src, DEVICE_ID_NULL);
checkNotNull(dst, DEVICE_ID_NULL);
checkNotNull(weight, LINK_WEIGHT_NULL);
return store.getDisjointPaths(topology, src, dst, weight, riskProfile);
}
@Override
public boolean isInfrastructure(Topology topology, ConnectPoint connectPoint) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(connectPoint, CONNECTION_POINT_NULL);
return store.isInfrastructure(topology, connectPoint);
}
@Override
public boolean isBroadcastPoint(Topology topology, ConnectPoint connectPoint) {
checkPermission(TOPOLOGY_READ);
checkNotNull(topology, TOPOLOGY_NULL);
checkNotNull(connectPoint, CONNECTION_POINT_NULL);
return store.isBroadcastPoint(topology, connectPoint);
}
// Personalized host provider service issued to the supplied provider.
@Override
protected TopologyProviderService createProviderService(TopologyProvider provider) {
return new InternalTopologyProviderService(provider);
}
private class InternalTopologyProviderService
extends AbstractProviderService<TopologyProvider>
implements TopologyProviderService {
InternalTopologyProviderService(TopologyProvider provider) {
super(provider);
}
@Override
public void topologyChanged(GraphDescription topoDescription,
List<Event> reasons) {
checkNotNull(topoDescription, "Topology description cannot be null");
TopologyEvent event = store.updateTopology(provider().id(),
topoDescription, reasons);
if (event != null) {
log.info("Topology {} changed", event.subject());
post(event);
}
}
}
// Store delegate to re-post events emitted from the store.
private class InternalStoreDelegate implements TopologyStoreDelegate {
@Override
public void notify(TopologyEvent event) {
post(event);
}
}
}
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