tapi/src/main/java/org/opendaylight/transportpce/tapi/listeners/TapiNetworkModelListenerImpl.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.listeners;
   9
  10 import java.nio.charset.StandardCharsets;
  11 import java.time.OffsetDateTime;
  12 import java.time.ZoneOffset;
  13 import java.time.format.DateTimeFormatter;
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.HashMap;
  18 import java.util.List;
  19 import java.util.Map;
  20 import java.util.Objects;
  21 import java.util.Optional;
  22 import java.util.UUID;
  23 import java.util.concurrent.ExecutionException;
  24 import java.util.stream.Collectors;
  25 import org.opendaylight.mdsal.binding.api.NotificationPublishService;
  26 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  27 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
  28 import org.opendaylight.transportpce.tapi.TapiStringConstants;
  29 import org.opendaylight.yang.gen.v1.http.org.openroadm.common.state.types.rev191129.State;
  30 import org.opendaylight.yang.gen.v1.nbi.notifications.rev211013.PublishTapiNotificationService;
  31 import org.opendaylight.yang.gen.v1.nbi.notifications.rev211013.PublishTapiNotificationServiceBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.AdministrativeState;
  33 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.Context;
  34 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.DateAndTime;
  35 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.LayerProtocolName;
  36 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.OperationalState;
  37 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.Uuid;
  38 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.Name;
  39 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.NameKey;
  40 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.OwnedNodeEdgePoint1;
  41 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connection.LowerConnection;
  42 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.Connection;
  43 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectionBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectionKey;
  45 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectivityService;
  46 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectivityServiceBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.connectivity.context.ConnectivityServiceKey;
  48 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext;
  49 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.NameAndValueChange;
  50 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.Notification;
  51 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.NotificationType;
  52 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.ObjectType;
  53 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.TapiNotificationListener;
  54 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.notification.ChangedAttributes;
  55 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.notification.ChangedAttributesBuilder;
  56 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.notification.ChangedAttributesKey;
  57 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.notification.TargetObjectName;
  58 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.notification.TargetObjectNameBuilder;
  59 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev181210.notification.TargetObjectNameKey;
  60 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.Context1;
  61 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.NodeEdgePointRef;
  62 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.context.TopologyContext;
  63 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.node.OwnedNodeEdgePoint;
  64 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.node.OwnedNodeEdgePointKey;
  65 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Node;
  66 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.NodeKey;
  67 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.context.Topology;
  68 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.context.TopologyKey;
  69 import org.opendaylight.yangtools.yang.binding.Enumeration;
  70 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  71 import org.slf4j.Logger;
  72 import org.slf4j.LoggerFactory;
  73
  74 public class TapiNetworkModelListenerImpl implements TapiNotificationListener {
  75
  76     private static final Logger LOG = LoggerFactory.getLogger(TapiNetworkModelListenerImpl.class);
  77     private final NetworkTransactionService networkTransactionService;
  78     private final List<ConnectivityService> connectivityServiceChanges = new ArrayList<>();
  79     private final Uuid tapiTopoUuid = new Uuid(UUID.nameUUIDFromBytes(TapiStringConstants.T0_FULL_MULTILAYER
  80             .getBytes(StandardCharsets.UTF_8)).toString());
  81     private final List<LayerProtocolName> orderedServiceLayerList;
  82     private final NotificationPublishService notificationPublishService;
  83
  84     public TapiNetworkModelListenerImpl(NetworkTransactionService networkTransactionService,
  85                                         NotificationPublishService notificationPublishService) {
  86         this.networkTransactionService = networkTransactionService;
  87         this.orderedServiceLayerList = List.of(LayerProtocolName.PHOTONICMEDIA, LayerProtocolName.ODU,
  88             LayerProtocolName.DSR, LayerProtocolName.ETH);
  89         this.notificationPublishService = notificationPublishService;
  90     }
  91
  92     @Override
  93     public void onNotification(Notification notification) {
  94         LOG.info("Received network model notification {}", notification);
  95         if (notification.getNotificationType() == NotificationType.ATTRIBUTEVALUECHANGE
  96                 && notification.getTargetObjectType() == ObjectType.NODEEDGEPOINT) {
  97             if (notification.getChangedAttributes() == null) {
  98                 return;
  99             }
 100             // TODO: need to re-think this to update first the connections from roadm to roadm and then the others
 101             updateConnections(notification.getChangedAttributes().keySet().stream()
 102                     .map(changedAttributesKey -> new Uuid(changedAttributesKey.getValueName()))
 103                     .collect(Collectors.toList()),
 104                 notification.getChangedAttributes().values().stream()
 105                     .map(NameAndValueChange::getNewValue)
 106                     .collect(Collectors.toList()));
 107             updateConnectivityServices();
 108             // todo set attributes
 109             for (ConnectivityService connService : this.connectivityServiceChanges) {
 110                 sendNbiNotification(createNbiNotification(connService));
 111             }
 112         }
 113     }
 114
 115     private PublishTapiNotificationService createNbiNotification(ConnectivityService connService) {
 116         if (connService == null) {
 117             LOG.error("ConnService is null");
 118             return null;
 119         }
 120         Map<ChangedAttributesKey, ChangedAttributes> changedStates = new HashMap<>();
 121         changedStates.put(new ChangedAttributesKey("administrativeState"),
 122             new ChangedAttributesBuilder()
 123                 .setNewValue(connService.getAdministrativeState().getName())
 124                 .setOldValue(connService.getAdministrativeState().equals(AdministrativeState.UNLOCKED)
 125                     ? AdministrativeState.LOCKED.getName() : AdministrativeState.UNLOCKED.getName())
 126                 .setValueName("administrativeState").build());
 127         changedStates.put(new ChangedAttributesKey("operationalState"),
 128             new ChangedAttributesBuilder()
 129                 .setNewValue(connService.getOperationalState().getName())
 130                 .setOldValue(connService.getOperationalState().equals(OperationalState.ENABLED)
 131                     ? OperationalState.DISABLED.getName() : OperationalState.ENABLED.getName())
 132                 .setValueName("operationalState").build());
 133         DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ssxxx");
 134         OffsetDateTime offsetDateTime = OffsetDateTime.now(ZoneOffset.UTC);
 135         DateAndTime datetime = new DateAndTime(dtf.format(offsetDateTime));
 136         Map<TargetObjectNameKey, TargetObjectName> targetObjectNames = new HashMap<>();
 137         if (connService.getName() != null) {
 138             for (Map.Entry<NameKey, Name> entry : connService.getName().entrySet()) {
 139                 targetObjectNames.put(new TargetObjectNameKey(entry.getKey().getValueName()),
 140                     new TargetObjectNameBuilder()
 141                         .setValueName(entry.getValue().getValueName())
 142                         .setValue(entry.getValue().getValue())
 143                         .build());
 144             }
 145         }
 146
 147         return new PublishTapiNotificationServiceBuilder()
 148             .setUuid(new Uuid(UUID.randomUUID().toString()))
 149             .setTopic(connService.getUuid().getValue())
 150             .setTargetObjectIdentifier(connService.getUuid())
 151             .setNotificationType(NotificationType.ATTRIBUTEVALUECHANGE)
 152             .setChangedAttributes(changedStates)
 153             .setEventTimeStamp(datetime)
 154             .setTargetObjectName(targetObjectNames)
 155             .setTargetObjectType(ObjectType.CONNECTIVITYSERVICE)
 156             .setLayerProtocolName(connService.getServiceLayer())
 157             .build();
 158     }
 159
 160     private void sendNbiNotification(PublishTapiNotificationService service) {
 161         try {
 162             this.notificationPublishService.putNotification(service);
 163         } catch (InterruptedException e) {
 164             LOG.warn("Cannot send notification to nbi", e);
 165             Thread.currentThread().interrupt();
 166         }
 167     }
 168
 169     private void updateConnectivityServices() {
 170         try {
 171             this.connectivityServiceChanges.clear();
 172             InstanceIdentifier<ConnectivityContext> connectivityContextIID =
 173                 InstanceIdentifier.builder(Context.class).augmentation(
 174                         org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 175                     .child(ConnectivityContext.class)
 176                     .build();
 177             Optional<ConnectivityContext> optConnContext =
 178                 this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connectivityContextIID).get();
 179             if (optConnContext.isEmpty()) {
 180                 LOG.error("Could not update TAPI connectivity services");
 181                 return;
 182             }
 183             ConnectivityContext connContext = optConnContext.get();
 184             Map<Uuid, Enumeration[]> states = new HashMap<>();
 185             if (connContext.getConnectivityService() == null) {
 186                 return;
 187             }
 188             for (ConnectivityService connService : connContext.getConnectivityService().values()) {
 189                 LOG.info("Connectivity service = {}", connService);
 190                 // TODO: maybe we need to check lower connections if my new code doesnt work
 191                 states.put(connService.getUuid(), getStates(connService));
 192                 AdministrativeState adminState = (AdministrativeState) states.get(connService.getUuid())[0];
 193                 OperationalState operState = (OperationalState) states.get(connService.getUuid())[1];
 194
 195                 InstanceIdentifier<ConnectivityService> connServIID = InstanceIdentifier
 196                     .builder(Context.class).augmentation(org.opendaylight.yang.gen.v1
 197                                 .urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 198                     .child(ConnectivityContext.class)
 199                     .child(ConnectivityService.class, new ConnectivityServiceKey(connService.getUuid()))
 200                     .build();
 201                 ConnectivityService changedConnServ = new ConnectivityServiceBuilder()
 202                     .setUuid(connService.getUuid())
 203                     .setAdministrativeState(adminState)
 204                     .setOperationalState(operState)
 205                     .build();
 206                 this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, connServIID,
 207                     changedConnServ);
 208                 this.networkTransactionService.commit().get();
 209
 210                 if (connService.getAdministrativeState() != adminState
 211                     || connService.getOperationalState() != operState) {
 212                     this.connectivityServiceChanges.add(changedConnServ);
 213                 }
 214             }
 215             // TODO: this last function may need some refactoring... if the PHOT_MEDIA goes down,
 216             //  then ODU goes down and then DSR should also go down
 217             for (ConnectivityService connService : connContext.getConnectivityService().values()) {
 218                 AdministrativeState adminState = (AdministrativeState) states.get(connService.getUuid())[0];
 219                 OperationalState operState = (OperationalState) states.get(connService.getUuid())[1];
 220                 this.connectivityServiceChanges.addAll(updateSupportedConnectivityServices(
 221                     connContext.getConnectivityService().values(), connService.getUuid(), adminState, operState,
 222                     LayerProtocolName.ODU));
 223             }
 224         } catch (InterruptedException | ExecutionException e) {
 225             LOG.error("Could not update TAPI connectivity services");
 226         }
 227     }
 228
 229     private Enumeration[] getStates(ConnectivityService connService) throws InterruptedException, ExecutionException {
 230         OperationalState operState = OperationalState.ENABLED;
 231         AdministrativeState adminState = AdministrativeState.UNLOCKED;
 232         if (connService.getConnection() == null) {
 233             LOG.info("No connections on service = {}", connService);
 234             return new Enumeration[]{null, null};
 235         }
 236         for (org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210
 237                 .connectivity.service.Connection connection : connService.getConnection().values()) {
 238             InstanceIdentifier<Connection> connIID =
 239                 InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 240                         .onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 241                     .child(ConnectivityContext.class)
 242                     .child(Connection.class, new ConnectionKey(connection.getConnectionUuid()))
 243                     .build();
 244             Optional<Connection> optConn = this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL,
 245                 connIID).get();
 246             if (optConn.isEmpty()) {
 247                 LOG.error("Could not get state for a TAPI connection");
 248                 continue;
 249             }
 250             LOG.info("State of connection {} of connectivity service {} = {}", optConn.get().getUuid().getValue(),
 251                 connService.getUuid().getValue(), optConn.get().getOperationalState().getName());
 252             if (optConn.get().getOperationalState() == OperationalState.DISABLED) {
 253                 adminState = AdministrativeState.LOCKED;
 254                 operState = OperationalState.DISABLED;
 255             }
 256         }
 257         return new Enumeration[]{adminState, operState};
 258     }
 259
 260     private void updateConnections(List<Uuid> changedOneps, List<String> onepStates) {
 261         LOG.info("Updating TAPI connections");
 262         LOG.info("Change in oneps = {}, new states = {}", changedOneps, onepStates);
 263         try {
 264             //should it return a list of connections?
 265             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn
 266                     .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext> connectivityContextIID =
 267                 InstanceIdentifier.builder(Context.class).augmentation(
 268                             org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 269                         .child(org.opendaylight.yang.gen.v1.urn
 270                                 .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 271                         .build();
 272             Optional<org.opendaylight.yang.gen.v1.urn
 273                     .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext> optConnContext =
 274                 this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connectivityContextIID).get();
 275             if (optConnContext.isEmpty()) {
 276                 LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 277                 return;
 278             }
 279             if (optConnContext.get().getConnectivityService() == null) {
 280                 LOG.info("No TAPI connectivity service to update");
 281                 return;
 282             }
 283             // TODO: order services from lower layer to upper layer
 284             Map<ConnectivityServiceKey, ConnectivityService> connServMap
 285                     = optConnContext.get().getConnectivityService();
 286             if (connServMap == null) {
 287                 LOG.info("No connections to update");
 288                 return;
 289             }
 290             connServMap = orderConnServiceMap(connServMap);
 291             for (ConnectivityService connService : connServMap.values()) {
 292                 LOG.info("Looping through connectivity service = {}", connService.getUuid().getValue());
 293                 if (connService.getConnection() == null) {
 294                     continue;
 295                 }
 296                 for (org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev181210
 297                         .connectivity.service.Connection connection : connService.getConnection().values()) {
 298                     InstanceIdentifier<Connection> connIID =
 299                         InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 300                             .onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 301                                 .child(org.opendaylight.yang.gen.v1.urn
 302                                         .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 303                                 .child(Connection.class, new ConnectionKey(connection.getConnectionUuid()))
 304                                 .build();
 305                     Optional<Connection> optConn =
 306                         this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connIID).get();
 307                     if (optConn.isEmpty()) {
 308                         LOG.error(TapiStringConstants.TAPI_CONNECTION_READ_ERROR);
 309                         continue;
 310                     }
 311                     Connection newConn = optConn.get();
 312                     // Check LowerConnection states and if any of the lower connection is disabled then we can put
 313                     // the connection out of service. And based on the connection previous state we decide
 314                     // the update necessary
 315                     OperationalState newConnState = newConn.getOperationalState();
 316                     if (newConn.getLowerConnection() != null) {
 317                         newConnState = updateLowerConnections(changedOneps, onepStates,
 318                                 newConn.getLowerConnection().values(), newConn.getOperationalState());
 319                     }
 320                     if (newConnState.equals(newConn.getOperationalState())) {
 321                         // To check if the oneps are from the original Top connection
 322                         newConnState = getConnectionState(changedOneps, onepStates, newConn);
 323                     }
 324
 325                     LOG.info("Previous connection state = {} & New connection state = {}",
 326                             newConn.getOperationalState().getName(), newConnState.getName());
 327                     Connection changedConn = new ConnectionBuilder(newConn).setOperationalState(newConnState).build();
 328                     // TODO: the changed NEP is a DEG port which is not in any connection,
 329                     //  therefore we also need to change the cross connections,
 330                     //  the lower connections uuid and check the states.
 331                     //  If any of the lower connections of a connection is DISABLED then the top connection is DISABLED
 332                     this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, connIID, changedConn);
 333                     this.networkTransactionService.commit().get();
 334                 }
 335             }
 336         } catch (InterruptedException | ExecutionException e) {
 337             LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 338         }
 339     }
 340
 341     private Map<ConnectivityServiceKey, ConnectivityService> orderConnServiceMap(
 342             Map<ConnectivityServiceKey, ConnectivityService> connServMap) {
 343         Map<ConnectivityServiceKey, ConnectivityService> orderedServiceMap = new HashMap<>();
 344         for (LayerProtocolName lpn:this.orderedServiceLayerList) {
 345             for (ConnectivityService connServ:connServMap.values()) {
 346                 if (connServ.getServiceLayer().equals(lpn)) {
 347                     LOG.info("Layer of service is equal to entry of lpn = {}", lpn);
 348                     orderedServiceMap.put(connServ.key(), connServ);
 349                 }
 350             }
 351         }
 352         LOG.info("Ordered map of services = {}", orderedServiceMap);
 353         return orderedServiceMap;
 354     }
 355
 356     private OperationalState updateLowerConnections(List<Uuid> changedOneps, List<String> onepStates,
 357                                                     Collection<LowerConnection> lowerConnections,
 358                                                     OperationalState uppConnState) {
 359         LOG.info("Updating lower connections");
 360         OperationalState topConnectionState = uppConnState;
 361         Boolean allLowerConnEna = true;
 362         try {
 363             for (LowerConnection lowerConn:lowerConnections) {
 364                 InstanceIdentifier<Connection> connIID =
 365                     InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 366                         .onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 367                             .child(org.opendaylight.yang.gen.v1.urn
 368                                     .onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 369                             .child(Connection.class, new ConnectionKey(lowerConn.getConnectionUuid()))
 370                             .build();
 371                 Optional<Connection> optConn =
 372                         this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connIID).get();
 373                 if (optConn.isEmpty()) {
 374                     LOG.error(TapiStringConstants.TAPI_CONNECTION_READ_ERROR);
 375                     continue;
 376                 }
 377                 Connection newConn = optConn.get(); // Current state of connection
 378                 if (newConn.getLowerConnection() != null) {
 379                     // TODO: we can receive disable here because the lower connection haven been yet looped through and
 380                     //  therefore it is disabled but it has to be changed to enable before returning disable.
 381                     //  We need to recall the update Lower Connections with the lower connection we are checking now
 382                     //  and all its lower connections, until no lower connections are found in the connection
 383                     updateLowerConnections(changedOneps, onepStates, newConn.getLowerConnection().values(),
 384                             newConn.getOperationalState());
 385                 }
 386                 OperationalState newConnState = getConnectionState(changedOneps, onepStates, newConn);
 387                 // updated connection state if it contains a nep that has changed
 388                 if (!newConn.getOperationalState().equals(newConnState)) {
 389                     Connection changedConn = new ConnectionBuilder(newConn).setOperationalState(newConnState).build();
 390                     this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, connIID, changedConn);
 391                     this.networkTransactionService.commit().get();
 392                 }
 393                 if (newConnState.equals(OperationalState.DISABLED)) {
 394                     LOG.info("LowerConnection state is disable");
 395                     allLowerConnEna = false;
 396                     topConnectionState = OperationalState.DISABLED;
 397                 }
 398             }
 399             if (allLowerConnEna) {
 400                 return OperationalState.ENABLED;
 401             }
 402             return OperationalState.DISABLED;
 403         } catch (InterruptedException | ExecutionException e) {
 404             LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 405             return topConnectionState;
 406         }
 407     }
 408
 409     private OperationalState getConnectionState(List<Uuid> changedOneps, List<String> operState, Connection conn)
 410             throws InterruptedException, ExecutionException {
 411         LOG.info("Getting TAPI connectionState");
 412         List<Uuid> connectionNeps = Objects.requireNonNull(conn.getConnectionEndPoint()).values().stream()
 413             .map(NodeEdgePointRef::getNodeEdgePointUuid).collect(Collectors.toList());
 414         LOG.info("Changed neps = {}", changedOneps);
 415         LOG.info("Connection NEPs = {}", connectionNeps);
 416         if (!Collections.disjoint(changedOneps, connectionNeps)) {
 417             LOG.info("Connection neps {} are included in changed oneps {}", connectionNeps, changedOneps);
 418             if ((changedOneps.contains(connectionNeps.get(0)) ? transformOperState(operState.get(
 419                     changedOneps.indexOf(connectionNeps.get(0)))) : null) == OperationalState.DISABLED
 420                         || (changedOneps.contains(connectionNeps.get(1)) ? transformOperState(operState.get(
 421                                 changedOneps.indexOf(connectionNeps.get(1)))) : null) == OperationalState.DISABLED) {
 422                 return OperationalState.DISABLED;
 423             }
 424             LOG.info("Didnt transform correctly the states");
 425             for (Uuid connectionNep : connectionNeps) {
 426                 Optional<org.opendaylight.yang.gen.v1.urn
 427                         .onf.otcc.yang.tapi.connectivity.rev181210.connection.ConnectionEndPoint> ocep
 428                     = conn.getConnectionEndPoint().values().stream()
 429                         .filter(connectionEndPoint -> connectionEndPoint.getNodeEdgePointUuid() == connectionNep)
 430                         .findFirst();
 431                 if (ocep.isEmpty()) {
 432                     continue;
 433                 }
 434                 InstanceIdentifier<OwnedNodeEdgePoint> onepIID = InstanceIdentifier.builder(Context.class)
 435                     .augmentation(Context1.class).child(TopologyContext.class)
 436                     .child(Topology.class, new TopologyKey(tapiTopoUuid))
 437                     .child(Node.class, new NodeKey(ocep.get().getNodeUuid()))
 438                     .child(OwnedNodeEdgePoint.class, new OwnedNodeEdgePointKey(connectionNep))
 439                     .build();
 440                 Optional<OwnedNodeEdgePoint> onep =
 441                     this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, onepIID).get();
 442                 if (onep.isEmpty() || onep.get().augmentation(OwnedNodeEdgePoint1.class) == null
 443                         || onep.get().augmentation(OwnedNodeEdgePoint1.class).getCepList() == null) {
 444                     continue;
 445                 }
 446                 if (onep.get().getOperationalState() == OperationalState.DISABLED
 447                         && !changedOneps.contains(onep.get().getUuid())) {
 448                     return OperationalState.DISABLED;
 449                 }
 450             }
 451             return OperationalState.ENABLED;
 452         }
 453         LOG.info("Connection state = {}. Going to check lower connections", conn.getOperationalState());
 454         // TODO --> check all lower connections state and if all of them are enabled we return enable, otherwise disable
 455         if (conn.getLowerConnection() != null && allLowerConEnabled(conn.getLowerConnection().values())) {
 456             return OperationalState.ENABLED;
 457         }
 458         return conn.getOperationalState();
 459     }
 460
 461     private boolean allLowerConEnabled(Collection<LowerConnection> lowerConnections) {
 462         try {
 463             for (LowerConnection lowerConn:lowerConnections) {
 464                 InstanceIdentifier<Connection> connIID =
 465                     InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 466                             .onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 467                         .child(org.opendaylight.yang.gen.v1.urn
 468                             .onf.otcc.yang.tapi.connectivity.rev181210.context
 469                             .ConnectivityContext.class)
 470                         .child(Connection.class, new ConnectionKey(lowerConn.getConnectionUuid()))
 471                         .build();
 472                 Optional<Connection> optConn =
 473                     this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connIID).get();
 474                 if (optConn.isEmpty()) {
 475                     LOG.error(TapiStringConstants.TAPI_CONNECTION_READ_ERROR);
 476                     continue;
 477                 }
 478                 Connection newConn = optConn.get(); // Current state of connection
 479                 // updated connection state if it contains a nep that has changed
 480                 if (newConn.getOperationalState().equals(OperationalState.DISABLED)) {
 481                     LOG.info("LowerConnection state is disable");
 482                     return false;
 483                 }
 484             }
 485             return true;
 486         } catch (InterruptedException | ExecutionException e) {
 487             LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 488             return false;
 489         }
 490     }
 491
 492     private List<ConnectivityService> updateSupportedConnectivityServices(Collection<ConnectivityService> connServices,
 493                                                                           Uuid supportingConnService,
 494                                                                           AdministrativeState adminState,
 495                                                                           OperationalState operState,
 496                                                                           LayerProtocolName layer) {
 497         // TODO we need to check this function
 498         List<ConnectivityService> changedServices = new ArrayList<>();
 499         if (adminState != AdministrativeState.LOCKED && operState != OperationalState.DISABLED) {
 500             return changedServices;
 501         }
 502         try {
 503             for (ConnectivityService supportedConnService : connServices) {
 504                 // TODO currently supporting service uuid is saved in service layer, replace with name as soon
 505                 // as name is implemented
 506                 if (supportedConnService.getServiceLayer() != layer) {
 507                     continue;
 508                 }
 509                 InstanceIdentifier<ConnectivityService> supportedConnServIID = InstanceIdentifier
 510                     .builder(Context.class).augmentation(org.opendaylight.yang.gen.v1
 511                         .urn.onf.otcc.yang.tapi.connectivity.rev181210.Context1.class)
 512                     .child(org.opendaylight.yang.gen.v1
 513                         .urn.onf.otcc.yang.tapi.connectivity.rev181210.context.ConnectivityContext.class)
 514                     .child(ConnectivityService.class, new ConnectivityServiceKey(supportedConnService.getUuid()))
 515                     .build();
 516                 Optional<ConnectivityService> optNewConnService = this.networkTransactionService.read(
 517                     LogicalDatastoreType.OPERATIONAL, supportedConnServIID).get();
 518                 if (optNewConnService.isEmpty()) {
 519                     LOG.error("Could not update TAPI connectivity service");
 520                     continue;
 521                 }
 522                 ConnectivityService newConnService = optNewConnService.get();
 523                 if (supportedConnService.getServiceLevel() != null
 524                         && supportedConnService.getServiceLevel().equals(supportingConnService.getValue())
 525                         && newConnService.getAdministrativeState() != AdministrativeState.LOCKED
 526                         && newConnService.getOperationalState() != OperationalState.DISABLED) {
 527
 528                     ConnectivityService changedSupportedConnServ = new ConnectivityServiceBuilder()
 529                         .setUuid(supportedConnService.getUuid())
 530                         .setAdministrativeState(adminState)
 531                         .setOperationalState(operState)
 532                         .build();
 533                     // TODO: may need to update connections...
 534                     this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, supportedConnServIID,
 535                         changedSupportedConnServ);
 536                     this.networkTransactionService.commit().get();
 537                     changedServices.add(changedSupportedConnServ);
 538                     if (layer == LayerProtocolName.ODU) {
 539                         changedServices.addAll(updateSupportedConnectivityServices(connServices,
 540                             supportedConnService.getUuid(), adminState, operState, LayerProtocolName.DSR));
 541                     }
 542                 }
 543             }
 544         } catch (InterruptedException | ExecutionException e) {
 545             LOG.error("Could not update TAPI connectivity service");
 546         }
 547         return changedServices;
 548     }
 549
 550     private OperationalState transformOperState(String operString) {
 551         LOG.debug("Operstring to be converted = {}", operString);
 552         State operState = org.opendaylight.transportpce.networkmodel.util.TopologyUtils.setNetworkOperState(operString);
 553         LOG.debug("State received from topologyutils = {}", operState);
 554         return operState.equals(State.InService) ? OperationalState.ENABLED : OperationalState.DISABLED;
 555     }
 556
 557 }