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
   9 package org.opendaylight.bgpcep.pcep.topology.provider;
  10
  11 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import java.util.Optional;
  15 import java.util.concurrent.ExecutionException;
  16 import org.opendaylight.mdsal.binding.api.DataBroker;
  17 import org.opendaylight.mdsal.binding.api.ReadTransaction;
  18 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.PathComputationClient1;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.Stateful1;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.Tlvs3;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.Tlvs3Builder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.lsp.db.version.tlv.LspDbVersion;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.speaker.entity.id.tlv.SpeakerEntityIdBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.Tlvs1;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.open.TlvsBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev181109.Node1;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev181109.pcep.client.attributes.PathComputationClient;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  31 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  32 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 final class PCEPStatefulPeerProposal {
  38
  39     private static final Logger LOG = LoggerFactory.getLogger(PCEPStatefulPeerProposal.class);
  40
  41     private final DataBroker dataBroker;
  42     private final InstanceIdentifier<Topology> topologyId;
  43
  44     private PCEPStatefulPeerProposal(final DataBroker dataBroker, final InstanceIdentifier<Topology> topologyId) {
  45         this.dataBroker = requireNonNull(dataBroker);
  46         this.topologyId = requireNonNull(topologyId);
  47     }
  48
  49     public static PCEPStatefulPeerProposal createStatefulPeerProposal(final DataBroker dataBroker,
  50             final InstanceIdentifier<Topology> topologyId) {
  51         return new PCEPStatefulPeerProposal(dataBroker, topologyId);
  52     }
  53
  54     void setPeerProposal(final NodeId nodeId, final TlvsBuilder openTlvsBuilder, final byte[] speakerId) {
  55         if (isSynOptimizationEnabled(openTlvsBuilder)) {
  56             Optional<LspDbVersion> result = Optional.empty();
  57             try (ReadTransaction rTx = this.dataBroker.newReadOnlyTransaction()) {
  58                 final ListenableFuture<Optional<LspDbVersion>> future = rTx.read(
  59                         LogicalDatastoreType.OPERATIONAL,
  60                         this.topologyId.child(Node.class, new NodeKey(nodeId)).augmentation(Node1.class)
  61                                 .child(PathComputationClient.class).augmentation(PathComputationClient1.class)
  62                                 .child(LspDbVersion.class));
  63                 try {
  64                     result = future.get();
  65                 } catch (final InterruptedException | ExecutionException e) {
  66                     LOG.warn("Failed to read toplogy {}.", InstanceIdentifier.keyOf(
  67                             PCEPStatefulPeerProposal.this.topologyId), e);
  68
  69                 }
  70             }
  71             if (speakerId == null && !result.isPresent()) {
  72                 return;
  73             }
  74             final Tlvs3Builder syncBuilder = new Tlvs3Builder();
  75
  76             if (result.isPresent()) {
  77                 syncBuilder.setLspDbVersion(result.get());
  78             }
  79             if (speakerId != null) {
  80                 syncBuilder.setSpeakerEntityId(new SpeakerEntityIdBuilder().setSpeakerEntityIdValue(speakerId).build());
  81             }
  82             openTlvsBuilder.addAugmentation(Tlvs3.class, syncBuilder.build()).build();
  83         }
  84     }
  85
  86     private static boolean isSynOptimizationEnabled(final TlvsBuilder openTlvsBuilder) {
  87         final Tlvs1 statefulTlv = openTlvsBuilder.augmentation(Tlvs1.class);
  88         if (statefulTlv != null && statefulTlv.getStateful() != null) {
  89             return statefulTlv.getStateful().augmentation(Stateful1.class) != null;
  90         }
  91         return false;
  92     }
  93 }