pcep/topology/topology-provider/src/main/java/org/opendaylight/bgpcep/pcep/topology/provider/PCEPStatefulPeerProposal.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.bgpcep.pcep.topology.provider;
   9
  10 import static com.google.common.base.Verify.verifyNotNull;
  11
  12 import com.google.common.annotations.VisibleForTesting;
  13 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  14 import java.net.InetSocketAddress;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.concurrent.ConcurrentHashMap;
  18 import org.eclipse.jdt.annotation.NonNull;
  19 import org.opendaylight.mdsal.binding.api.DataBroker;
  20 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
  21 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  22 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  23 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  24 import org.opendaylight.protocol.pcep.PCEPPeerProposal;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.PathComputationClient1;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.Stateful1;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.Tlvs3Builder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.lsp.db.version.tlv.LspDbVersion;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.speaker.entity.id.tlv.SpeakerEntityIdBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.config.rev230112.pcep.node.config.SessionConfig;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.Tlvs1;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.open.TlvsBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev220730.Node1;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev220730.pcep.client.attributes.PathComputationClient;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.sync.optimizations.config.rev181109.PcepNodeSyncConfig;
  36 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  37 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  38 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  39 import org.opendaylight.yangtools.concepts.AbstractRegistration;
  40 import org.opendaylight.yangtools.concepts.Registration;
  41 import org.opendaylight.yangtools.yang.binding.DataObject;
  42 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  43
  44 final class PCEPStatefulPeerProposal extends AbstractRegistration implements PCEPPeerProposal {
  45     private abstract static class AbstractListener<D extends DataObject, V> implements DataTreeChangeListener<D> {
  46         final Map<NodeId, V> map = new ConcurrentHashMap<>();
  47         final Registration reg;
  48
  49         @SuppressFBWarnings(value = "MC_OVERRIDABLE_METHOD_CALL_IN_CONSTRUCTOR",
  50             justification = "Stateless specializations in this nest")
  51         AbstractListener(final DataBroker dataBroker, final @NonNull LogicalDatastoreType datastore,
  52                 final @NonNull InstanceIdentifier<D> wildcard) {
  53             reg = dataBroker.registerTreeChangeListener(DataTreeIdentifier.of(datastore, wildcard), this);
  54         }
  55
  56         final void remove(final DataTreeModification<?> modification) {
  57             map.remove(extractNodeId(modification));
  58         }
  59
  60         final void update(final DataTreeModification<?> modification, final V value) {
  61             final var nodeId = extractNodeId(modification);
  62             if (value != null) {
  63                 map.put(nodeId, value);
  64             } else {
  65                 map.remove(nodeId);
  66             }
  67         }
  68
  69         private static @NonNull NodeId extractNodeId(final DataTreeModification<?> modification) {
  70             return verifyNotNull(modification.getRootPath().path().firstKeyOf(Node.class)).getNodeId();
  71         }
  72     }
  73
  74     @VisibleForTesting
  75     static final class SpeakerIdListener extends AbstractListener<PcepNodeSyncConfig, byte[]> {
  76         SpeakerIdListener(final DataBroker dataBroker, final InstanceIdentifier<Topology> topologyId) {
  77             super(dataBroker, LogicalDatastoreType.CONFIGURATION, topologyId.child(Node.class)
  78                 .augmentation(Node1.class).child(SessionConfig.class)
  79                 .augmentation(PcepNodeSyncConfig.class));
  80         }
  81
  82         @Override
  83         public void onDataTreeChanged(final List<DataTreeModification<PcepNodeSyncConfig>> changes) {
  84             for (var change : changes) {
  85                 final var config = change.getRootNode().dataAfter();
  86                 if (config != null) {
  87                     update(change, config.getSpeakerEntityIdValue());
  88                 } else {
  89                     remove(change);
  90                 }
  91             }
  92         }
  93     }
  94
  95     @VisibleForTesting
  96     static final class LspDbVersionListener extends AbstractListener<LspDbVersion, LspDbVersion> {
  97         LspDbVersionListener(final DataBroker dataBroker, final InstanceIdentifier<Topology> topologyId) {
  98             super(dataBroker, LogicalDatastoreType.OPERATIONAL, topologyId.child(Node.class)
  99                 .augmentation(Node1.class).child(PathComputationClient.class)
 100                 .augmentation(PathComputationClient1.class).child(LspDbVersion.class));
 101         }
 102
 103         @Override
 104         public void onDataTreeChanged(final List<DataTreeModification<LspDbVersion>> changes) {
 105             for (var change : changes) {
 106                 update(change, change.getRootNode().dataAfter());
 107             }
 108         }
 109     }
 110
 111     private final LspDbVersionListener lspDbVersions;
 112     private final SpeakerIdListener speakerIds;
 113
 114     PCEPStatefulPeerProposal(final DataBroker dataBroker, final InstanceIdentifier<Topology> topologyId) {
 115         lspDbVersions = new LspDbVersionListener(dataBroker, topologyId);
 116         speakerIds = new SpeakerIdListener(dataBroker, topologyId);
 117     }
 118
 119     @Override
 120     public void setPeerSpecificProposal(final InetSocketAddress address, final TlvsBuilder openBuilder) {
 121         // Check if we are dealing with synchronization optimization
 122         final var statefulTlv = openBuilder.augmentation(Tlvs1.class);
 123         if (statefulTlv == null) {
 124             return;
 125         }
 126         final var stateful = statefulTlv.getStateful();
 127         if (stateful == null || stateful.augmentation(Stateful1.class) == null) {
 128             return;
 129         }
 130
 131         final var nodeId = ServerSessionManager.createNodeId(address.getAddress());
 132         final var dbVersion = lspDbVersions.map.get(nodeId);
 133         final var speakerId = speakerIds.map.get(nodeId);
 134         if (speakerId == null && dbVersion == null) {
 135             // Nothing to add
 136             return;
 137         }
 138
 139         final Tlvs3Builder syncBuilder = new Tlvs3Builder();
 140         if (dbVersion != null) {
 141             syncBuilder.setLspDbVersion(dbVersion);
 142         }
 143         if (speakerId != null) {
 144             syncBuilder.setSpeakerEntityId(new SpeakerEntityIdBuilder().setSpeakerEntityIdValue(speakerId).build());
 145         }
 146         openBuilder.addAugmentation(syncBuilder.build()).build();
 147     }
 148
 149     @Override
 150     protected void removeRegistration() {
 151         lspDbVersions.reg.close();
 152         speakerIds.reg.close();
 153     }
 154 }