2 * Copyright (c) 2020 Orange. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.bgpcep.pcep.server.provider;
10 import static java.util.Objects.requireNonNull;
12 import java.util.HashMap;
14 import javax.annotation.PreDestroy;
15 import javax.inject.Inject;
16 import javax.inject.Singleton;
17 import org.eclipse.jdt.annotation.Nullable;
18 import org.opendaylight.algo.PathComputationProvider;
19 import org.opendaylight.bgpcep.pcep.server.PathComputation;
20 import org.opendaylight.bgpcep.pcep.server.PceServerProvider;
21 import org.opendaylight.graph.ConnectedGraph;
22 import org.opendaylight.graph.ConnectedGraphProvider;
23 import org.opendaylight.mdsal.binding.api.DataBroker;
24 import org.opendaylight.mdsal.binding.api.RpcService;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.graph.rev220720.graph.topology.GraphKey;
26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
29 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
30 import org.osgi.service.component.annotations.Activate;
31 import org.osgi.service.component.annotations.Component;
32 import org.osgi.service.component.annotations.Deactivate;
33 import org.osgi.service.component.annotations.Reference;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
39 @Component(immediate = true)
40 public final class DefaultPceServerProvider implements PceServerProvider, AutoCloseable {
41 private static final Logger LOG = LoggerFactory.getLogger(DefaultPceServerProvider.class);
43 private final Map<TopologyId, PathManagerProvider> pathManagers = new HashMap<>();
44 private final Map<TopologyId, PathManagerListener> pathListeners = new HashMap<>();
45 private final Map<TopologyId, PcepTopologyListener> pcepListeners = new HashMap<>();
46 private final ConnectedGraphProvider graphProvider;
47 private final PathComputationProvider algoProvider;
48 private final DataBroker dataBroker;
49 private final RpcService rpcService;
51 private volatile ConnectedGraph tedGraph;
52 private volatile GraphKey graphKey;
56 public DefaultPceServerProvider(@Reference final ConnectedGraphProvider graphProvider,
57 @Reference final PathComputationProvider pathComputationProvider, @Reference final DataBroker dataBroker,
58 @Reference final RpcService rpcService) {
59 this.graphProvider = requireNonNull(graphProvider);
60 algoProvider = requireNonNull(pathComputationProvider);
61 this.dataBroker = requireNonNull(dataBroker);
62 this.rpcService = requireNonNull(rpcService);
69 for (PathManagerListener pathListener: pathListeners.values()) {
73 pathListeners.clear();
74 for (PcepTopologyListener pcepListener: pcepListeners.values()) {
78 pcepListeners.clear();
79 for (PathManagerProvider pathManager: pathManagers.values()) {
86 private void closeListenerAndManager(final TopologyId key) {
87 PathManagerListener pathListener = pathListeners.remove(key);
88 if (pathListener != null) {
91 PcepTopologyListener pcepListener = pcepListeners.remove(key);
92 if (pcepListener != null) {
95 PathManagerProvider pathManager = pathManagers.remove(key);
96 if (pathManager != null) {
102 public @Nullable PathComputation getPathComputation() {
103 /* Check that we have a valid graph */
104 final ConnectedGraph graph = getTedGraph();
105 return graph == null ? null : new PathComputationImpl(tedGraph, algoProvider);
108 public ConnectedGraph getTedGraph() {
109 /* Leave a chance to get a valid Graph in case of late fulfillment */
110 if (tedGraph == null) {
117 * Set Traffic Engineering Graph. This method is necessary as the TedGraph could be available
118 * after the PathComputationFactory start e.g. manual insertion of a ted Graph, or late tedGraph fulfillment
119 * from BGP Link State.
121 private void setTedGraph() {
122 tedGraph = graphProvider.getConnectedGraph(graphKey);
126 public void registerPcepTopology(final KeyedInstanceIdentifier<Topology, TopologyKey> topology,
127 final GraphKey key) {
128 TopologyId topoKey = requireNonNull(topology).getKey().getTopologyId();
129 graphKey = requireNonNull(key);
131 LOG.info("Start PCE Server components for Topology {} with TED {}", topoKey.getValue(), graphKey.getName());
133 /* First close current Listener & Manager if there are active */
134 closeListenerAndManager(topoKey);
136 /* Then create Path Manger */
137 PathManagerProvider pathManager = new PathManagerProvider(dataBroker, topology, rpcService, this);
140 PathManagerListener pathListener = new PathManagerListener(dataBroker, topology, pathManager);
141 PcepTopologyListener pcepListener = new PcepTopologyListener(dataBroker, topology, pathManager);
143 /* Finally, register all of them for later deletion */
144 pathManagers.put(topoKey, pathManager);
145 pathListeners.put(topoKey, pathListener);
146 pcepListeners.put(topoKey, pcepListener);
150 public void unRegisterPcepTopology(final KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
151 TopologyId topoKey = requireNonNull(topology).getKey().getTopologyId();
154 LOG.info("Stop PCE Server for Topology {}", topoKey.getValue());
155 closeListenerAndManager(topoKey);