tapi/src/main/java/org/opendaylight/transportpce/tapi/utils/TapiContext.java

   1 /*
   2  * Copyright © 2021 Nokia, 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.transportpce.tapi.utils;
   9
  10 import java.nio.charset.Charset;
  11 import java.util.HashMap;
  12 import java.util.Map;
  13 import java.util.Optional;
  14 import java.util.UUID;
  15 import java.util.concurrent.ExecutionException;
  16 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  17 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
  18 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.Context;
  19 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.ContextBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.LayerProtocolName;
  21 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.Uuid;
  22 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.Name;
  23 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.NameBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.tapi.context.ServiceInterfacePoint;
  25 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.tapi.context.ServiceInterfacePointKey;
  26 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1;
  27 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1Builder;
  28 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.OwnedNodeEdgePoint1;
  29 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.OwnedNodeEdgePoint1Builder;
  30 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.cep.list.ConnectionEndPoint;
  31 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.cep.list.ConnectionEndPointKey;
  32 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connection.LowerConnection;
  33 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connection.LowerConnectionKey;
  34 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.Connection;
  35 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectionKey;
  36 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectivityService;
  37 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectivityServiceKey;
  38 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContextBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.context.topology.context.topology.node.owned.node.edge.point.CepList;
  40 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.context.topology.context.topology.node.owned.node.edge.point.CepListBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContext;
  42 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContextBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.node.OwnedNodeEdgePoint;
  44 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.node.OwnedNodeEdgePointBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.node.OwnedNodeEdgePointKey;
  46 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Link;
  47 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.LinkKey;
  48 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Node;
  49 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.NodeBuilder;
  50 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.NodeKey;
  51 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.context.NwTopologyServiceBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.context.Topology;
  53 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.context.TopologyKey;
  54 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  55 import org.slf4j.Logger;
  56 import org.slf4j.LoggerFactory;
  57
  58 public class TapiContext {
  59
  60     private static final Logger LOG = LoggerFactory.getLogger(TapiContext.class);
  61     public static final String TAPI_CONTEXT = "T-API context";
  62     public static final String NODE_NOT_PRESENT = "Node is not present in datastore";
  63     private final NetworkTransactionService networkTransactionService;
  64
  65     public TapiContext(NetworkTransactionService networkTransactionService) {
  66         this.networkTransactionService = networkTransactionService;
  67         createTapiContext();
  68     }
  69
  70     private void createTapiContext() {
  71         try {
  72             // Augmenting tapi context to include topology and connectivity contexts
  73             Name contextName = new NameBuilder().setValue(TAPI_CONTEXT).setValueName("TAPI Context Name").build();
  74
  75             Context1 connectivityContext =
  76                 new Context1Builder()
  77                     .setConnectivityContext(
  78                         new ConnectivityContextBuilder()
  79                             .setConnection(new HashMap<>())
  80                             .setConnectivityService(new HashMap<>())
  81                             .build())
  82                     .build();
  83
  84             Name nwTopoServiceName =
  85                 new NameBuilder()
  86                     .setValue("Network Topo Service")
  87                     .setValueName("Network Topo Service Name")
  88                     .build();
  89
  90             org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1 topologyContext
  91                 = new org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1Builder()
  92                     .setTopologyContext(new TopologyContextBuilder()
  93                         .setNwTopologyService(new NwTopologyServiceBuilder()
  94                             .setTopology(new HashMap<>())
  95                             .setUuid(
  96                                 new Uuid(
  97                                     UUID.nameUUIDFromBytes("Network Topo Service".getBytes(Charset.forName("UTF-8")))
  98                                         .toString()))
  99                             .setName(Map.of(nwTopoServiceName.key(), nwTopoServiceName))
 100                             .build())
 101                         .setTopology(new HashMap<>())
 102                         .build())
 103                     .build();
 104
 105             ContextBuilder contextBuilder = new ContextBuilder()
 106                     .setName(Map.of(contextName.key(), contextName))
 107                     .setUuid(
 108                         new Uuid(UUID.nameUUIDFromBytes(TAPI_CONTEXT.getBytes(Charset.forName("UTF-8"))).toString()))
 109                     .setServiceInterfacePoint(new HashMap<>())
 110                     .addAugmentation(connectivityContext)
 111                     .addAugmentation(topologyContext);
 112
 113             // todo: add notification context
 114             InstanceIdentifier<Context> contextIID = InstanceIdentifier.builder(Context.class).build();
 115             // put in datastore
 116             this.networkTransactionService.put(LogicalDatastoreType.OPERATIONAL, contextIID, contextBuilder.build());
 117             this.networkTransactionService.commit().get();
 118             LOG.info("TAPI context created successfully.");
 119         } catch (InterruptedException | ExecutionException e) {
 120             LOG.error("Failed to create TAPI context", e);
 121         }
 122     }
 123
 124     public Context getTapiContext() {
 125         // TODO: verify this is correct. Should we identify the context IID with the context UUID??
 126         //  There is no Identifiable in Context model
 127         InstanceIdentifier<Context> contextIID = InstanceIdentifier.builder(Context.class).build();
 128         try {
 129             Optional<Context> optionalContext = this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL,
 130                     contextIID).get();
 131             if (!optionalContext.isPresent()) {
 132                 LOG.error("Tapi context is not present in datastore");
 133                 return null;
 134             }
 135             return optionalContext.get();
 136         } catch (InterruptedException | ExecutionException e) {
 137             LOG.error("Couldnt read tapi context from datastore", e);
 138             return null;
 139         }
 140     }
 141
 142     public void deleteTapiContext() {
 143
 144     }
 145
 146     public void updateTopologyContext(Map<TopologyKey, Topology> topologyMap) {
 147         // TODO: solve error when merging: Topology is not a valid child of topology context?
 148         // TODO: verify this is correct. Should we identify the context IID with the context UUID??
 149         try {
 150             TopologyContext topologyContext = new TopologyContextBuilder()
 151                     //.setNwTopologyService(new NwTopologyServiceBuilder().build())
 152                     .setTopology(topologyMap)
 153                     .build();
 154             InstanceIdentifier<TopologyContext> topologycontextIID =
 155                     InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 156                             .onf.otcc.yang.tapi.topology.rev181210.Context1.class)
 157                             .child(TopologyContext.class)
 158                             .build();
 159             // merge in datastore
 160             this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, topologycontextIID,
 161                     topologyContext);
 162             this.networkTransactionService.commit().get();
 163             LOG.info("TAPI topology merged successfully.");
 164         } catch (InterruptedException | ExecutionException e) {
 165             LOG.error("Failed to merge TAPI topology", e);
 166         }
 167     }
 168
 169     public void updateSIPContext(Map<ServiceInterfacePointKey, ServiceInterfacePoint> sipMap) {
 170         // TODO: verify this is correct. Should we identify the context IID with the context UUID??
 171         try {
 172             ContextBuilder contextBuilder = new ContextBuilder().setServiceInterfacePoint(sipMap);
 173             InstanceIdentifier<Context> contextIID = InstanceIdentifier.builder(Context.class).build();
 174             // merge in datastore
 175             this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, contextIID,
 176                     contextBuilder.build());
 177             this.networkTransactionService.commit().get();
 178             LOG.info("TAPI SIPs merged successfully.");
 179         } catch (InterruptedException | ExecutionException e) {
 180             LOG.error("Failed to merge TAPI SIPs", e);
 181         }
 182     }
 183
 184     public void updateConnectivityContext(Map<ConnectivityServiceKey, ConnectivityService> connServMap,
 185                                           Map<ConnectionKey, Connection> connectionFullMap) {
 186         // TODO: verify this is correct. Should we identify the context IID with the context UUID??
 187         try {
 188             org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext
 189                 connectivityContext = new ConnectivityContextBuilder()
 190                 .setConnectivityService(connServMap)
 191                 .setConnection(connectionFullMap)
 192                 .build();
 193             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn
 194                 .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext> connectivitycontextIID =
 195                     InstanceIdentifier.builder(Context.class).augmentation(Context1.class)
 196                         .child(org.opendaylight.yang.gen.v1.urn
 197                             .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 198                         .build();
 199             // merge in datastore
 200             this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, connectivitycontextIID,
 201                 connectivityContext);
 202             this.networkTransactionService.commit().get();
 203             LOG.info("TAPI connectivity merged successfully.");
 204         } catch (InterruptedException | ExecutionException e) {
 205             LOG.error("Failed to merge TAPI connectivity", e);
 206         }
 207     }
 208
 209     public void updateTopologyWithCep(Uuid topoUuid, Uuid nodeUuid, Uuid nepUuid, ConnectionEndPoint cep) {
 210         // TODO: verify this is correct. Should we identify the context IID with the context UUID??
 211         InstanceIdentifier<OwnedNodeEdgePoint> onepIID = InstanceIdentifier.builder(Context.class)
 212             .augmentation(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1.class)
 213             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContext.class)
 214             .child(Topology.class, new TopologyKey(topoUuid))
 215             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Node.class,
 216                     new NodeKey(nodeUuid))
 217             .child(OwnedNodeEdgePoint.class, new OwnedNodeEdgePointKey(nepUuid))
 218             .build();
 219         try {
 220             Optional<OwnedNodeEdgePoint> optionalOnep = this.networkTransactionService.read(
 221                     LogicalDatastoreType.OPERATIONAL, onepIID).get();
 222             if (!optionalOnep.isPresent()) {
 223                 LOG.error("ONEP is not present in datastore");
 224                 return;
 225             }
 226             OwnedNodeEdgePoint onep = optionalOnep.get();
 227             LOG.info("ONEP found = {}", onep);
 228             // TODO -> If cep exists -> skip merging to datasore
 229             OwnedNodeEdgePoint1 onep1 = onep.augmentation(OwnedNodeEdgePoint1.class);
 230             if (onep1 != null && onep1.getCepList() != null && onep1.getCepList().getConnectionEndPoint() != null
 231                     && onep1.getCepList().getConnectionEndPoint().containsKey(new ConnectionEndPointKey(cep.key()))) {
 232                 LOG.info("CEP already in topology, skipping merge");
 233                 return;
 234             }
 235             // Updated ONEP
 236             CepList cepList = new CepListBuilder().setConnectionEndPoint(Map.of(cep.key(), cep)).build();
 237             OwnedNodeEdgePoint1 onep1Bldr = new OwnedNodeEdgePoint1Builder().setCepList(cepList).build();
 238             OwnedNodeEdgePoint newOnep = new OwnedNodeEdgePointBuilder(onep)
 239                     .addAugmentation(onep1Bldr)
 240                     .build();
 241             LOG.info("New ONEP is {}", newOnep);
 242             // merge in datastore
 243             this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, onepIID,
 244                     newOnep);
 245             this.networkTransactionService.commit().get();
 246             LOG.info("CEP added successfully.");
 247         } catch (InterruptedException | ExecutionException e) {
 248             LOG.error("Couldnt update cep in topology", e);
 249         }
 250     }
 251
 252     public Node getTapiNode(Uuid topoUuid, Uuid nodeUuid) {
 253         InstanceIdentifier<Node> nodeIID = InstanceIdentifier.builder(Context.class)
 254             .augmentation(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1.class)
 255             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContext.class)
 256             .child(Topology.class, new TopologyKey(topoUuid))
 257             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Node.class,
 258                         new NodeKey(nodeUuid)).build();
 259         try {
 260             Optional<Node> optNode = this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, nodeIID)
 261                     .get();
 262             if (!optNode.isPresent()) {
 263                 LOG.error(NODE_NOT_PRESENT);
 264                 return null;
 265             }
 266             // TODO -> Need to remove CEPs from NEPs. If not error from get Topology details output
 267             Node node = optNode.get();
 268             LOG.debug("NEPs of node before creating map to be returned to the getTapiNode function = {}",
 269                 node.getOwnedNodeEdgePoint().size());
 270             Map<OwnedNodeEdgePointKey, OwnedNodeEdgePoint> onepMap = new HashMap<>();
 271             for (OwnedNodeEdgePoint onep: node.getOwnedNodeEdgePoint().values()) {
 272                 if (onep.augmentation(OwnedNodeEdgePoint1.class) == null) {
 273                     onepMap.put(onep.key(), onep);
 274                     continue;
 275                 }
 276                 OwnedNodeEdgePointBuilder newOnepBuilder = new OwnedNodeEdgePointBuilder()
 277                     .setUuid(onep.getUuid())
 278                     .setLayerProtocolName(onep.getLayerProtocolName())
 279                     .setName(onep.getName())
 280                     .setSupportedCepLayerProtocolQualifier(onep.getSupportedCepLayerProtocolQualifier())
 281                     .setAdministrativeState(onep.getAdministrativeState())
 282                     .setOperationalState(onep.getOperationalState())
 283                     .setLifecycleState(onep.getLifecycleState())
 284                     .setTerminationDirection(onep.getTerminationDirection())
 285                     .setTerminationState(onep.getTerminationState())
 286                     .setLinkPortDirection(onep.getLinkPortDirection())
 287                     .setLinkPortRole(onep.getLinkPortRole());
 288                 if (onep.getMappedServiceInterfacePoint() != null) {
 289                     newOnepBuilder.setMappedServiceInterfacePoint(onep.getMappedServiceInterfacePoint());
 290                 }
 291                 OwnedNodeEdgePoint newOnep = newOnepBuilder.build();
 292                 onepMap.put(newOnep.key(), newOnep);
 293             }
 294             LOG.debug("NEPs of node after creating map to be returned to the getTapiNode function = {}",
 295                 onepMap.size());
 296             return new NodeBuilder(node)
 297                 .setOwnedNodeEdgePoint(onepMap)
 298                 .build();
 299         } catch (InterruptedException | ExecutionException e) {
 300             LOG.error("Couldnt read node in topology", e);
 301             return null;
 302         }
 303     }
 304
 305     public OwnedNodeEdgePoint getTapiNEP(Uuid topoUuid, Uuid nodeUuid, Uuid nepUuid) {
 306         InstanceIdentifier<OwnedNodeEdgePoint> nepIID = InstanceIdentifier.builder(Context.class)
 307             .augmentation(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1.class)
 308             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContext.class)
 309             .child(Topology.class, new TopologyKey(topoUuid))
 310             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Node.class,
 311                 new NodeKey(nodeUuid)).child(OwnedNodeEdgePoint.class, new OwnedNodeEdgePointKey(nepUuid)).build();
 312         try {
 313             Optional<OwnedNodeEdgePoint> optNode = this.networkTransactionService
 314                     .read(LogicalDatastoreType.OPERATIONAL, nepIID)
 315                     .get();
 316             if (!optNode.isPresent()) {
 317                 LOG.error(NODE_NOT_PRESENT);
 318                 return null;
 319             }
 320             return optNode.get();
 321         } catch (InterruptedException | ExecutionException e) {
 322             LOG.error("Couldnt read NEP in topology", e);
 323             return null;
 324         }
 325     }
 326
 327     public Link getTapiLink(Uuid topoUuid, Uuid linkUuid) {
 328         InstanceIdentifier<Link> linkIID = InstanceIdentifier.builder(Context.class)
 329             .augmentation(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1.class)
 330             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContext.class)
 331             .child(Topology.class, new TopologyKey(topoUuid))
 332             .child(Link.class, new LinkKey(linkUuid)).build();
 333         try {
 334             Optional<Link> optLink = this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, linkIID)
 335                     .get();
 336             if (!optLink.isPresent()) {
 337                 LOG.error(NODE_NOT_PRESENT);
 338                 return null;
 339             }
 340             return optLink.get();
 341         } catch (InterruptedException | ExecutionException e) {
 342             LOG.error("Couldnt read link in topology", e);
 343             return null;
 344         }
 345     }
 346
 347     public Map<TopologyKey, Topology> getTopologyContext() {
 348         InstanceIdentifier<TopologyContext> topologycontextIID =
 349                 InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 350                         .onf.otcc.yang.tapi.topology.rev181210.Context1.class)
 351                         .child(TopologyContext.class)
 352                         .build();
 353         try {
 354             Optional<TopologyContext> optTopoContext = this.networkTransactionService.read(
 355                     LogicalDatastoreType.OPERATIONAL, topologycontextIID).get();
 356             if (!optTopoContext.isPresent()) {
 357                 LOG.error("Topology context is not present in datastore");
 358                 return null;
 359             }
 360             return optTopoContext.get().getTopology();
 361         } catch (InterruptedException | ExecutionException e) {
 362             LOG.error("Couldnt read topology context", e);
 363             return null;
 364         }
 365     }
 366
 367     public ConnectivityService getConnectivityService(Uuid serviceUuid) {
 368         try {
 369             // First read connectivity service with service uuid and update info
 370             InstanceIdentifier<ConnectivityService> connectivityServIID =
 371                 InstanceIdentifier.builder(Context.class).augmentation(Context1.class)
 372                     .child(org.opendaylight.yang.gen.v1.urn
 373                         .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 374                     .child(ConnectivityService.class, new ConnectivityServiceKey(serviceUuid))
 375                     .build();
 376
 377             Optional<ConnectivityService> optConnServ =
 378                 this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connectivityServIID).get();
 379             if (!optConnServ.isPresent()) {
 380                 LOG.error("Connectivity service not found in tapi context");
 381                 return null;
 382             }
 383             return optConnServ.get();
 384         } catch (InterruptedException | ExecutionException e) {
 385             LOG.error("Connectivity service not found in tapi context. Error:", e);
 386             return null;
 387         }
 388     }
 389
 390     public void deleteConnectivityService(Uuid serviceUuid) {
 391         // TODO: handle case where the infrastructure service is removed before the top level service?
 392         ConnectivityService connectivityService = getConnectivityService(serviceUuid);
 393         if (connectivityService == null) {
 394             LOG.error("Service doesnt exist in tapi context");
 395             return;
 396         }
 397         for (org.opendaylight.yang.gen.v1
 398                 .urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.service.Connection connection:
 399                     connectivityService.getConnection().values()) {
 400             deleteConnection(connection.getConnectionUuid(), serviceUuid, connectivityService.getServiceLayer());
 401         }
 402         InstanceIdentifier<ConnectivityService> connectivityServIID =
 403                 InstanceIdentifier.builder(Context.class).augmentation(Context1.class)
 404                         .child(org.opendaylight.yang.gen.v1.urn
 405                                 .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 406                         .child(ConnectivityService.class, new ConnectivityServiceKey(serviceUuid))
 407                         .build();
 408         try {
 409             this.networkTransactionService.delete(LogicalDatastoreType.OPERATIONAL, connectivityServIID);
 410             this.networkTransactionService.commit().get();
 411             LOG.info("Connectivity service deleted");
 412         } catch (InterruptedException | ExecutionException e) {
 413             LOG.error("Failed to delete Connectivity service", e);
 414         }
 415     }
 416
 417     private void deleteConnection(Uuid connectionUuid, Uuid serviceUuid, LayerProtocolName serviceLayer) {
 418         // First read connectivity service with service uuid and update info
 419         InstanceIdentifier<org.opendaylight.yang.gen.v1
 420             .urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.Connection> connectionIID =
 421             InstanceIdentifier.builder(Context.class).augmentation(Context1.class)
 422                 .child(org.opendaylight.yang.gen.v1.urn
 423                     .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 424                 .child(org.opendaylight.yang.gen.v1.urn
 425                         .onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.Connection.class,
 426                     new org.opendaylight.yang.gen.v1.urn
 427                         .onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectionKey(
 428                         connectionUuid))
 429                 .build();
 430         Connection connection = getConnection(connectionUuid);
 431         if (connection != null && isNotUsedByOtherService(connection, serviceUuid)) {
 432             Map<LowerConnectionKey, LowerConnection> lowerConnectionMap = connection.getLowerConnection();
 433             if (lowerConnectionMap != null) {
 434                 for (LowerConnection lowerConnection:lowerConnectionMap.values()) {
 435                     // check layer of connection, for DSR service we only need to delete DSR layer
 436                     // connection and XC at ODU. For ODU, only need to delete ODU connections and for
 437                     // photonic media services all the photonic media. And when it is ETH we need to delete
 438                     // everything and also without checking the lower connection layer
 439                     Connection conn1 = getConnection(lowerConnection.getConnectionUuid());
 440                     if (conn1 == null) {
 441                         // connection not found in tapi context
 442                         continue;
 443                     }
 444                     LayerProtocolName lowerConnLayer = conn1.getLayerProtocolName();
 445                     switch (serviceLayer.getIntValue()) {
 446                         case 0:
 447                         case 3:
 448                             // PHOTONIC & ODU
 449                             if (lowerConnLayer.equals(serviceLayer)) {
 450                                 deleteConnection(lowerConnection.getConnectionUuid(), serviceUuid, serviceLayer);
 451                             }
 452                             break;
 453                         case 1:
 454                             // ETH
 455                             deleteConnection(lowerConnection.getConnectionUuid(), serviceUuid, serviceLayer);
 456                             break;
 457                         case 2:
 458                             // DSR
 459                             if (lowerConnLayer.equals(serviceLayer) || (lowerConnLayer.equals(LayerProtocolName.ODU)
 460                                     && conn1.getName().values().stream().anyMatch(
 461                                             name -> name.getValue().contains("XC")))) {
 462                                 deleteConnection(lowerConnection.getConnectionUuid(), serviceUuid, serviceLayer);
 463                             }
 464                             break;
 465                         default:
 466                             LOG.info("Unknown service Layer: {}", serviceLayer.getName());
 467                     }
 468                 }
 469             }
 470         }
 471         try {
 472             this.networkTransactionService.delete(LogicalDatastoreType.OPERATIONAL, connectionIID);
 473             this.networkTransactionService.commit().get();
 474         } catch (InterruptedException | ExecutionException e) {
 475             LOG.error("Failed to delete TAPI Connection", e);
 476         }
 477     }
 478
 479     private boolean isNotUsedByOtherService(Connection connection, Uuid serviceUuid) {
 480         Map<ConnectivityServiceKey, ConnectivityService> connServicesMap = getConnectivityServices();
 481         if (connServicesMap == null) {
 482             LOG.info("isNotUsedByOtherService: No service in tapi context!");
 483             return true;
 484         }
 485         for (ConnectivityService connService: connServicesMap.values()) {
 486             if (connService.getConnection() == null || connService.getUuid().equals(serviceUuid)) {
 487                 LOG.info("isNotUsedByOtherService: There are no connections in service {} or service in loop is the "
 488                         + "service to be deleted", connService.getUuid().getValue());
 489                 continue;
 490             }
 491             if (connService.getConnection().containsKey(
 492                     new org.opendaylight.yang.gen.v1
 493                         .urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.service.ConnectionKey(
 494                             connection.getUuid()))) {
 495                 LOG.info("isNotUsedByOtherService: Connection {} is in used by service {}. Cannot remove it from "
 496                         + "context", connection.getUuid().getValue(), connService.getUuid().getValue());
 497                 return false;
 498             }
 499             LOG.info("isNotUsedByOtherService: Going to check lower connections");
 500             for (org.opendaylight.yang.gen.v1.urn
 501                         .onf.otcc.yang.tapi.connectivity.rev181210.connectivity.service.Connection
 502                     conn:connService.getConnection().values()) {
 503                 Connection connection1 = getConnection(conn.getConnectionUuid());
 504                 if (connection1 == null || connection1.getLowerConnection() == null) {
 505                     continue;
 506                 }
 507                 if (connection1.getLowerConnection().containsKey(new LowerConnectionKey(connection.getUuid()))) {
 508                     LOG.info("isNotUsedByOtherService: Lower Connection {} is in used by service {}. Cannot remove it "
 509                             + "from context", connection.getUuid().getValue(), connService.getUuid().getValue());
 510                     return false;
 511                 }
 512             }
 513         }
 514         LOG.info("isNotUsedByOtherService: No other service uses connection {}, therefore it can be safely deleted",
 515                 connection.getUuid());
 516         return true;
 517     }
 518
 519     public Connection getConnection(Uuid connectionUuid) {
 520         try {
 521             // First read connectivity service with service uuid and update info
 522             InstanceIdentifier<Connection> connIID =
 523                 InstanceIdentifier.builder(Context.class).augmentation(Context1.class)
 524                     .child(org.opendaylight.yang.gen.v1.urn
 525                         .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 526                     .child(Connection.class, new ConnectionKey(connectionUuid))
 527                     .build();
 528
 529             Optional<Connection> optConn =
 530                 this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connIID).get();
 531             if (!optConn.isPresent()) {
 532                 LOG.error("Connection not found in tapi context");
 533                 return null;
 534             }
 535             return optConn.get();
 536         } catch (InterruptedException | ExecutionException e) {
 537             LOG.error("Connection not found in tapi context. Error:", e);
 538             return null;
 539         }
 540     }
 541
 542     public Map<ConnectivityServiceKey, ConnectivityService> getConnectivityServices() {
 543         try {
 544             // First read connectivity service with service uuid and update info
 545             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn
 546                 .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext> connectivityContextIID =
 547                 InstanceIdentifier.builder(Context.class).augmentation(Context1.class)
 548                     .child(org.opendaylight.yang.gen.v1.urn
 549                         .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 550                     .build();
 551
 552             Optional<org.opendaylight.yang.gen.v1.urn
 553                 .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext> optConnContext =
 554                     this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connectivityContextIID)
 555                         .get();
 556             if (!optConnContext.isPresent()) {
 557                 LOG.error("Connectivity context not found in tapi context");
 558                 return null;
 559             }
 560             return optConnContext.get().getConnectivityService();
 561         } catch (InterruptedException | ExecutionException e) {
 562             LOG.error("Connectivity context not found in tapi context. Error:", e);
 563             return null;
 564         }
 565     }
 566
 567     public ConnectionEndPoint getTapiCEP(Uuid topoUuid, Uuid nodeUuid, Uuid nepUuid, Uuid cepUuid) {
 568         InstanceIdentifier<OwnedNodeEdgePoint> nepIID = InstanceIdentifier.builder(Context.class)
 569             .augmentation(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1.class)
 570             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContext.class)
 571             .child(Topology.class, new TopologyKey(topoUuid))
 572             .child(org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Node.class,
 573                 new NodeKey(nodeUuid)).child(OwnedNodeEdgePoint.class, new OwnedNodeEdgePointKey(nepUuid)).build();
 574         try {
 575             Optional<OwnedNodeEdgePoint> optNode = this.networkTransactionService
 576                 .read(LogicalDatastoreType.OPERATIONAL, nepIID).get();
 577             if (!optNode.isPresent()) {
 578                 LOG.error(NODE_NOT_PRESENT);
 579                 return null;
 580             }
 581             if (optNode.get().augmentation(OwnedNodeEdgePoint1.class) == null) {
 582                 LOG.error("Node doesnt have ceps");
 583                 return null;
 584             }
 585             return optNode.get().augmentation(OwnedNodeEdgePoint1.class).getCepList().getConnectionEndPoint()
 586                 .get(new ConnectionEndPointKey(cepUuid));
 587         } catch (InterruptedException | ExecutionException e) {
 588             LOG.error("Couldnt read node in topology", e);
 589             return null;
 590         }
 591     }
 592 }