2 * Copyright © 2021 Nokia. 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.transportpce.tapi.topology;
10 import java.nio.charset.Charset;
11 import java.util.List;
13 import java.util.Optional;
15 import java.util.UUID;
16 import java.util.concurrent.ExecutionException;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
19 import org.opendaylight.mdsal.binding.api.DataTreeModification;
20 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
21 import org.opendaylight.transportpce.common.NetworkUtils;
22 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
23 import org.opendaylight.transportpce.tapi.TapiStringConstants;
24 import org.opendaylight.transportpce.tapi.utils.TapiLink;
25 import org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev230526.Link1;
26 import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev230526.OpenroadmLinkType;
27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.NetworkId;
28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.Networks;
29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.networks.Network;
30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.networks.NetworkKey;
31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.LinkId;
32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.Network1;
33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.networks.network.Link;
34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.networks.network.LinkKey;
35 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.Context;
36 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.LayerProtocolName;
37 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.Uuid;
38 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.Context1;
39 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.context.TopologyContext;
40 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.context.Topology;
41 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.context.TopologyBuilder;
42 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.context.TopologyKey;
43 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
44 import org.slf4j.Logger;
45 import org.slf4j.LoggerFactory;
47 public class TapiOrLinkListener implements DataTreeChangeListener<Link> {
49 private static final Logger LOG = LoggerFactory.getLogger(TapiOrLinkListener.class);
50 private final TapiLink tapiLink;
51 private final NetworkTransactionService networkTransactionService;
52 private final Uuid tapiTopoUuid = new Uuid(UUID.nameUUIDFromBytes(
53 TapiStringConstants.T0_FULL_MULTILAYER.getBytes(Charset.forName("UTF-8")))
56 public TapiOrLinkListener(final TapiLink tapiLink, final NetworkTransactionService networkTransactionService) {
57 this.tapiLink = tapiLink;
58 this.networkTransactionService = networkTransactionService;
62 public void onDataTreeChanged(@NonNull List<DataTreeModification<Link>> changes) {
63 LOG.info("onDataTreeChanged - {}", this.getClass().getSimpleName());
64 for (DataTreeModification<Link> change : changes) {
66 Link link = change.getRootNode().dataAfter();
70 LOG.info("New link in openroadm topology");
71 // Todo: XPDR links are unidirectional, therefore we need to check for the current one and
72 // the opposite one. But first check the type
73 Link1 link1 = link.augmentation(Link1.class);
75 LOG.error("No type in link. We cannot trigger the TAPI link creation");
79 if (!(link1.getLinkType().equals(OpenroadmLinkType.XPONDERINPUT)
80 || link1.getLinkType().equals(OpenroadmLinkType.XPONDEROUTPUT))
81 || link1.getLinkType().equals(OpenroadmLinkType.ROADMTOROADM)) {
82 // No creation of link for ADD/DROP/EXPRESS links
83 LOG.warn("Not triggering creation of link for type = {}", link1.getLinkType().getName());
87 if (!oppositeLinkExists(link1.getOppositeLink())) {
88 LOG.warn("Opposite link doest exist. Not creating TAPI link");
91 LOG.info("Opposite link already in datastore. Creating TAPI bidirectional link");
93 String srcNode = getRoadmOrXpdr(link.getSource().getSourceNode().getValue());
94 String srcTp = link.getSource().getSourceTp().getValue();
95 String destNode = getRoadmOrXpdr(link.getDestination().getDestNode().getValue());
96 String destTp = link.getDestination().getDestTp().getValue();
97 //Configuring link type to default OMS_XPDR-RDM
98 String linkType = TapiStringConstants.OMS_XPDR_RDM_LINK;
100 if (link1.getLinkType().equals(OpenroadmLinkType.ROADMTOROADM)) {
101 // For ROADM to ROADM link, only capture change on existing links to track change in OMS
102 // Avoid creating 2 unidirectional links since these links are bidirectional in TAPI :
103 // Links are created at initialization through a process that guarantees the creation of a unique link
104 // Thus check that the link already exist in Datastore to upgrade it rather than creating an additional
105 // unidirectional link
106 if (!(linkExistInTopology(srcNode, srcTp, destNode, destTp, getQual(srcNode), getQual(destNode),
107 TapiStringConstants.PHTNC_MEDIA_OTS, TapiStringConstants.PHTNC_MEDIA_OTS))) {
110 LOG.warn("Now triggering creation of link for type = {} to account for OMS change",
111 link1.getLinkType().getName());
112 linkType = TapiStringConstants.OMS_RDM_RDM_LINK;
115 // for Xpdr to roadm link, create Link only if it was not before in datastore since links are created
116 // through rpcs and do not contain characteristics subject to potential updates
117 if (change.getRootNode().dataBefore() != null) {
120 putTapiLinkInTopology(this.tapiLink.createTapiLink(srcNode, srcTp, destNode, destTp,
121 linkType, getQual(srcNode), getQual(destNode),
122 TapiStringConstants.PHTNC_MEDIA_OTS, TapiStringConstants.PHTNC_MEDIA_OTS,
123 link1.getAdministrativeState().getName(), link1.getOperationalState().getName(),
124 Set.of(LayerProtocolName.PHOTONICMEDIA), Set.of(LayerProtocolName.PHOTONICMEDIA.getName()),
129 private boolean linkExistInTopology(String srcNodeId, String srcTpId, String dstNodeId, String dstTpId,
130 String srcNodeQual, String dstNodeQual, String srcTpQual, String dstTpQual) {
131 String sourceNepKey = String.join("+", srcNodeId, srcTpQual, srcTpId);
132 String destNepKey = String.join("+", dstNodeId, dstTpQual, dstTpId);
133 String linkKey = String.join("to", sourceNepKey, destNepKey);
134 Uuid linkUuid = new Uuid(
135 UUID.nameUUIDFromBytes(linkKey.getBytes(Charset.forName("UTF-8"))).toString());
136 InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.Link>
137 linkIID = InstanceIdentifier.builder(Context.class)
138 .augmentation(Context1.class).child(TopologyContext.class)
139 .child(Topology.class, new TopologyKey(tapiTopoUuid))
140 .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.Link.class,
141 new org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.LinkKey(linkUuid))
144 Optional<org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.Link> optLink =
145 this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, linkIID).get();
146 if (optLink.isEmpty()) {
149 } catch (InterruptedException | ExecutionException e) {
150 LOG.error("Could not read TAPI link in DataStore checking that rdm2rdm link is present");
155 private void putTapiLinkInTopology(
156 org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.Link tapiXpdrLink) {
157 LOG.info("Creating tapi link in TAPI topology context");
158 // merge in datastore
159 this.networkTransactionService.merge(
160 LogicalDatastoreType.OPERATIONAL,
161 InstanceIdentifier.builder(Context.class)
162 .augmentation(Context1.class).child(TopologyContext.class)
163 .child(Topology.class, new TopologyKey(this.tapiTopoUuid))
165 new TopologyBuilder()
166 .setUuid(this.tapiTopoUuid)
167 .setLink(Map.of(tapiXpdrLink.key(), tapiXpdrLink))
170 this.networkTransactionService.commit().get();
171 } catch (InterruptedException | ExecutionException e) {
172 LOG.error("Error populating TAPI topology: ", e);
174 LOG.info("TAPI Link added succesfully.");
177 private String getQual(String node) {
178 return node.contains("ROADM") ? TapiStringConstants.PHTNC_MEDIA : TapiStringConstants.XPDR;
181 private boolean oppositeLinkExists(LinkId oppositeLink) {
183 if (this.networkTransactionService
185 LogicalDatastoreType.CONFIGURATION,
186 InstanceIdentifier.builder(Networks.class)
187 .child(Network.class, new NetworkKey(new NetworkId(NetworkUtils.OVERLAY_NETWORK_ID)))
188 .augmentation(Network1.class)
189 .child(Link.class, new LinkKey(oppositeLink))
193 LOG.error("Opposite link not found in datastore {}", oppositeLink.getValue());
197 } catch (InterruptedException | ExecutionException e) {
198 LOG.error("Failed to read opposite link", e);
203 private String getRoadmOrXpdr(String node) {
204 return node.contains("ROADM")
205 ? String.join("-", node.split("-")[0], node.split("-")[1])