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 java.util.Objects.requireNonNull;
  11
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.util.Optional;
  14 import java.util.concurrent.ExecutionException;
  15 import org.opendaylight.mdsal.binding.api.DataBroker;
  16 import org.opendaylight.mdsal.binding.api.ReadTransaction;
  17 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.PathComputationClient1;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.Stateful1;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.Tlvs3Builder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.lsp.db.version.tlv.LspDbVersion;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev200720.speaker.entity.id.tlv.SpeakerEntityIdBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.Tlvs1;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.open.TlvsBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.Node1;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.PathComputationClient;
  27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 final class PCEPStatefulPeerProposal {
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(PCEPStatefulPeerProposal.class);
  38
  39     private final DataBroker dataBroker;
  40     private final InstanceIdentifier<Topology> topologyId;
  41
  42     private PCEPStatefulPeerProposal(final DataBroker dataBroker, final InstanceIdentifier<Topology> topologyId) {
  43         this.dataBroker = requireNonNull(dataBroker);
  44         this.topologyId = requireNonNull(topologyId);
  45     }
  46
  47     public static PCEPStatefulPeerProposal createStatefulPeerProposal(final DataBroker dataBroker,
  48             final InstanceIdentifier<Topology> topologyId) {
  49         return new PCEPStatefulPeerProposal(dataBroker, topologyId);
  50     }
  51
  52     void setPeerProposal(final NodeId nodeId, final TlvsBuilder openTlvsBuilder, final byte[] speakerId) {
  53         if (isSynOptimizationEnabled(openTlvsBuilder)) {
  54             Optional<LspDbVersion> result = Optional.empty();
  55             try (ReadTransaction rTx = this.dataBroker.newReadOnlyTransaction()) {
  56                 final ListenableFuture<Optional<LspDbVersion>> future = rTx.read(
  57                         LogicalDatastoreType.OPERATIONAL,
  58                         this.topologyId.child(Node.class, new NodeKey(nodeId)).augmentation(Node1.class)
  59                                 .child(PathComputationClient.class).augmentation(PathComputationClient1.class)
  60                                 .child(LspDbVersion.class));
  61                 try {
  62                     result = future.get();
  63                 } catch (final InterruptedException | ExecutionException e) {
  64                     LOG.warn("Failed to read toplogy {}.", InstanceIdentifier.keyOf(
  65                             PCEPStatefulPeerProposal.this.topologyId), e);
  66
  67                 }
  68             }
  69             if (speakerId == null && !result.isPresent()) {
  70                 return;
  71             }
  72             final Tlvs3Builder syncBuilder = new Tlvs3Builder();
  73
  74             if (result.isPresent()) {
  75                 syncBuilder.setLspDbVersion(result.get());
  76             }
  77             if (speakerId != null) {
  78                 syncBuilder.setSpeakerEntityId(new SpeakerEntityIdBuilder().setSpeakerEntityIdValue(speakerId).build());
  79             }
  80             openTlvsBuilder.addAugmentation(syncBuilder.build()).build();
  81         }
  82     }
  83
  84     private static boolean isSynOptimizationEnabled(final TlvsBuilder openTlvsBuilder) {
  85         final Tlvs1 statefulTlv = openTlvsBuilder.augmentation(Tlvs1.class);
  86         if (statefulTlv != null && statefulTlv.getStateful() != null) {
  87             return statefulTlv.getStateful().augmentation(Stateful1.class) != null;
  88         }
  89         return false;
  90     }
  91 }