tapi/src/main/java/org/opendaylight/transportpce/tapi/listeners/TapiNetworkModelNotificationHandler.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.Set;
  23 import java.util.UUID;
  24 import java.util.concurrent.ExecutionException;
  25 import java.util.stream.Collectors;
  26 import org.opendaylight.mdsal.binding.api.NotificationPublishService;
  27 import org.opendaylight.mdsal.binding.api.NotificationService.CompositeListener;
  28 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  29 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
  30 import org.opendaylight.transportpce.tapi.TapiStringConstants;
  31 import org.opendaylight.yang.gen.v1.http.org.openroadm.common.state.types.rev191129.State;
  32 import org.opendaylight.yang.gen.v1.nbi.notifications.rev230728.PublishTapiNotificationService;
  33 import org.opendaylight.yang.gen.v1.nbi.notifications.rev230728.PublishTapiNotificationServiceBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.AdministrativeState;
  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.DateAndTime;
  37 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.LayerProtocolName;
  38 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.OperationalState;
  39 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.Uuid;
  40 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.global._class.Name;
  41 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev221121.global._class.NameKey;
  42 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.CONNECTIVITYOBJECTTYPECONNECTIVITYSERVICE;
  43 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.OwnedNodeEdgePoint1;
  44 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.connection.LowerConnection;
  45 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.connectivity.context.Connection;
  46 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.connectivity.context.ConnectionBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.connectivity.context.ConnectionKey;
  48 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.connectivity.context.ConnectivityService;
  49 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.connectivity.context.ConnectivityServiceBuilder;
  50 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.connectivity.context.ConnectivityServiceKey;
  51 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.context.ConnectivityContext;
  52 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.NOTIFICATIONTYPEATTRIBUTEVALUECHANGE;
  53 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.NameAndValueChange;
  54 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.Notification;
  55 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.notification.ChangedAttributes;
  56 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.notification.ChangedAttributesBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.notification.ChangedAttributesKey;
  58 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.notification.TargetObjectName;
  59 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.notification.TargetObjectNameBuilder;
  60 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.notification.rev221121.notification.TargetObjectNameKey;
  61 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.Context1;
  62 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.NodeEdgePointRef;
  63 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.TOPOLOGYOBJECTTYPENODEEDGEPOINT;
  64 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.context.TopologyContext;
  65 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.node.OwnedNodeEdgePoint;
  66 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.node.OwnedNodeEdgePointKey;
  67 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.Node;
  68 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.NodeKey;
  69 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.context.Topology;
  70 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev221121.topology.context.TopologyKey;
  71 import org.opendaylight.yangtools.yang.binding.EnumTypeObject;
  72 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  73 import org.osgi.service.component.annotations.Activate;
  74 import org.osgi.service.component.annotations.Component;
  75 import org.osgi.service.component.annotations.Reference;
  76 import org.slf4j.Logger;
  77 import org.slf4j.LoggerFactory;
  78
  79 @Component(service = TapiNetworkModelNotificationHandler.class)
  80 public class TapiNetworkModelNotificationHandler {
  81
  82     private static final Logger LOG = LoggerFactory.getLogger(TapiNetworkModelNotificationHandler.class);
  83     private final NetworkTransactionService networkTransactionService;
  84     private final NotificationPublishService notificationPublishService;
  85     private final List<ConnectivityService> connectivityServiceChanges = new ArrayList<>();
  86     private final Uuid tapiTopoUuid = new Uuid(UUID.nameUUIDFromBytes(TapiStringConstants.T0_FULL_MULTILAYER
  87             .getBytes(StandardCharsets.UTF_8)).toString());
  88     private final List<LayerProtocolName> orderedServiceLayerList;
  89
  90     @Activate
  91     public TapiNetworkModelNotificationHandler(@Reference NetworkTransactionService networkTransactionService,
  92             @Reference NotificationPublishService notificationPublishService) {
  93         this.networkTransactionService = networkTransactionService;
  94         this.notificationPublishService = notificationPublishService;
  95         this.orderedServiceLayerList = List.of(LayerProtocolName.PHOTONICMEDIA, LayerProtocolName.ODU,
  96             LayerProtocolName.DSR, LayerProtocolName.ETH);
  97         LOG.debug("TapiNetworkModelListenerImpl instantiated");
  98     }
  99
 100     public CompositeListener getCompositeListener() {
 101         return new CompositeListener(Set.of(
 102             new CompositeListener.Component<>(Notification.class, this::onNotification)));
 103     }
 104
 105     private void onNotification(Notification notification) {
 106         LOG.info("Received network model notification {}", notification);
 107         if (notification.getNotificationType().equals(NOTIFICATIONTYPEATTRIBUTEVALUECHANGE.VALUE)
 108                 && notification.getTargetObjectType().equals(TOPOLOGYOBJECTTYPENODEEDGEPOINT.VALUE)) {
 109             if (notification.getChangedAttributes() == null) {
 110                 return;
 111             }
 112             // TODO: need to re-think this to update first the connections from roadm to roadm and then the others
 113             updateConnections(notification.getChangedAttributes().keySet().stream()
 114                     .map(changedAttributesKey -> new Uuid(changedAttributesKey.getValueName()))
 115                     .collect(Collectors.toList()), notification.getChangedAttributes().values().stream()
 116                     .map(NameAndValueChange::getNewValue)
 117                     .collect(Collectors.toList()));
 118             updateConnectivityServices();
 119             // todo set attributes
 120             for (ConnectivityService connService : this.connectivityServiceChanges) {
 121                 sendNbiNotification(createNbiNotification(connService));
 122             }
 123         }
 124     }
 125
 126 //    @Override
 127 //    public void onEventNotification(EventNotification notification) {
 128 //        LOG.info("Received network model notification {}", notification);
 129 //        //TODO: see if implementation needed and if in TAPI2.4, something supersedes this method
 130 //    }
 131
 132     private PublishTapiNotificationService createNbiNotification(ConnectivityService connService) {
 133         if (connService == null) {
 134             LOG.error("ConnService is null");
 135             return null;
 136         }
 137         Map<ChangedAttributesKey, ChangedAttributes> changedStates = new HashMap<>();
 138         changedStates.put(new ChangedAttributesKey("administrativeState"),
 139             new ChangedAttributesBuilder()
 140                 .setNewValue(connService.getAdministrativeState().getName())
 141                 .setOldValue(connService.getAdministrativeState().equals(AdministrativeState.UNLOCKED)
 142                     ? AdministrativeState.LOCKED.getName() : AdministrativeState.UNLOCKED.getName())
 143                 .setValueName("administrativeState").build());
 144         changedStates.put(new ChangedAttributesKey("operationalState"),
 145             new ChangedAttributesBuilder()
 146                 .setNewValue(connService.getOperationalState().getName())
 147                 .setOldValue(connService.getOperationalState().equals(OperationalState.ENABLED)
 148                     ? OperationalState.DISABLED.getName() : OperationalState.ENABLED.getName())
 149                 .setValueName("operationalState").build());
 150         DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ssxxx");
 151         OffsetDateTime offsetDateTime = OffsetDateTime.now(ZoneOffset.UTC);
 152         DateAndTime datetime = new DateAndTime(dtf.format(offsetDateTime));
 153         Map<TargetObjectNameKey, TargetObjectName> targetObjectNames = new HashMap<>();
 154         if (connService.getName() != null) {
 155             for (Map.Entry<NameKey, Name> entry : connService.getName().entrySet()) {
 156                 targetObjectNames.put(new TargetObjectNameKey(entry.getKey().getValueName()),
 157                     new TargetObjectNameBuilder()
 158                         .setValueName(entry.getValue().getValueName())
 159                         .setValue(entry.getValue().getValue())
 160                         .build());
 161             }
 162         }
 163
 164         return new PublishTapiNotificationServiceBuilder()
 165             .setUuid(new Uuid(UUID.randomUUID().toString()))
 166             .setTopic(connService.getUuid().getValue())
 167             .setTargetObjectIdentifier(connService.getUuid())
 168             .setNotificationType(NOTIFICATIONTYPEATTRIBUTEVALUECHANGE.VALUE)
 169             .setChangedAttributes(changedStates)
 170             .setEventTimeStamp(datetime)
 171             .setTargetObjectName(targetObjectNames)
 172             .setTargetObjectType(CONNECTIVITYOBJECTTYPECONNECTIVITYSERVICE.VALUE)
 173             .setLayerProtocolName(connService.getLayerProtocolName())
 174             .build();
 175     }
 176
 177     private void sendNbiNotification(PublishTapiNotificationService service) {
 178         try {
 179             this.notificationPublishService.putNotification(service);
 180         } catch (InterruptedException e) {
 181             LOG.warn("Cannot send notification to nbi", e);
 182             Thread.currentThread().interrupt();
 183         }
 184     }
 185
 186     private void updateConnectivityServices() {
 187         try {
 188             this.connectivityServiceChanges.clear();
 189             InstanceIdentifier<ConnectivityContext> connectivityContextIID =
 190                 InstanceIdentifier.builder(Context.class).augmentation(
 191                         org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 192                     .child(ConnectivityContext.class)
 193                     .build();
 194             Optional<ConnectivityContext> optConnContext =
 195                 this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connectivityContextIID).get();
 196             if (optConnContext.isEmpty()) {
 197                 LOG.error("Could not update TAPI connectivity services");
 198                 return;
 199             }
 200             ConnectivityContext connContext = optConnContext.orElseThrow();
 201             Map<Uuid, EnumTypeObject[]> states = new HashMap<>();
 202             if (connContext.getConnectivityService() == null) {
 203                 return;
 204             }
 205             for (ConnectivityService connService : connContext.getConnectivityService().values()) {
 206                 LOG.info("Connectivity service = {}", connService);
 207                 // TODO: maybe we need to check lower connections if my new code doesnt work
 208                 states.put(connService.getUuid(), getStates(connService));
 209                 AdministrativeState adminState = (AdministrativeState) states.get(connService.getUuid())[0];
 210                 OperationalState operState = (OperationalState) states.get(connService.getUuid())[1];
 211
 212                 InstanceIdentifier<ConnectivityService> connServIID = InstanceIdentifier
 213                     .builder(Context.class).augmentation(org.opendaylight.yang.gen.v1
 214                                 .urn.onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 215                     .child(ConnectivityContext.class)
 216                     .child(ConnectivityService.class, new ConnectivityServiceKey(connService.getUuid()))
 217                     .build();
 218                 ConnectivityService changedConnServ = new ConnectivityServiceBuilder()
 219                     .setUuid(connService.getUuid())
 220                     .setAdministrativeState(adminState)
 221                     .setOperationalState(operState)
 222                     .build();
 223                 this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, connServIID,
 224                     changedConnServ);
 225                 this.networkTransactionService.commit().get();
 226
 227                 if (connService.getAdministrativeState() != adminState
 228                     || connService.getOperationalState() != operState) {
 229                     this.connectivityServiceChanges.add(changedConnServ);
 230                 }
 231             }
 232             // TODO: this last function may need some refactoring... if the PHOT_MEDIA goes down,
 233             //  then ODU goes down and then DSR should also go down
 234             for (ConnectivityService connService : connContext.getConnectivityService().values()) {
 235                 AdministrativeState adminState = (AdministrativeState) states.get(connService.getUuid())[0];
 236                 OperationalState operState = (OperationalState) states.get(connService.getUuid())[1];
 237                 this.connectivityServiceChanges.addAll(updateSupportedConnectivityServices(
 238                     connContext.getConnectivityService().values(), connService.getUuid(), adminState, operState,
 239                     LayerProtocolName.ODU));
 240             }
 241         } catch (InterruptedException | ExecutionException e) {
 242             LOG.error("Could not update TAPI connectivity services");
 243         }
 244     }
 245
 246     private EnumTypeObject[] getStates(ConnectivityService connService)
 247             throws InterruptedException, ExecutionException {
 248         OperationalState operState = OperationalState.ENABLED;
 249         AdministrativeState adminState = AdministrativeState.UNLOCKED;
 250         if (connService.getConnection() == null) {
 251             LOG.info("No connections on service = {}", connService);
 252             return new EnumTypeObject[]{null, null};
 253         }
 254         for (org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121
 255                 .connectivity.service.Connection connection : connService.getConnection().values()) {
 256             InstanceIdentifier<Connection> connIID =
 257                 InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 258                         .onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 259                     .child(ConnectivityContext.class)
 260                     .child(Connection.class, new ConnectionKey(connection.getConnectionUuid()))
 261                     .build();
 262             Optional<Connection> optConn = this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL,
 263                 connIID).get();
 264             if (optConn.isEmpty()) {
 265                 LOG.error("Could not get state for a TAPI connection");
 266                 continue;
 267             }
 268             LOG.info("State of connection {} of connectivity service {} = {}", optConn.orElseThrow().getUuid()
 269                 .getValue(), connService.getUuid().getValue(), optConn.orElseThrow().getOperationalState().getName());
 270             if (optConn.orElseThrow().getOperationalState() == OperationalState.DISABLED) {
 271                 adminState = AdministrativeState.LOCKED;
 272                 operState = OperationalState.DISABLED;
 273             }
 274         }
 275         return new EnumTypeObject[]{adminState, operState};
 276     }
 277
 278     private void updateConnections(List<Uuid> changedOneps, List<String> onepStates) {
 279         LOG.info("Updating TAPI connections");
 280         LOG.info("Change in oneps = {}, new states = {}", changedOneps, onepStates);
 281         try {
 282             //should it return a list of connections?
 283             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn
 284                     .onf.otcc.yang.tapi.connectivity.rev221121.context.ConnectivityContext> connectivityContextIID =
 285                 InstanceIdentifier.builder(Context.class).augmentation(
 286                             org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 287                         .child(org.opendaylight.yang.gen.v1.urn
 288                                 .onf.otcc.yang.tapi.connectivity.rev221121.context.ConnectivityContext.class)
 289                         .build();
 290             Optional<org.opendaylight.yang.gen.v1.urn
 291                     .onf.otcc.yang.tapi.connectivity.rev221121.context.ConnectivityContext> optConnContext =
 292                 this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connectivityContextIID).get();
 293             if (optConnContext.isEmpty()) {
 294                 LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 295                 return;
 296             }
 297             if (optConnContext.orElseThrow().getConnectivityService() == null) {
 298                 LOG.info("No TAPI connectivity service to update");
 299                 return;
 300             }
 301             // TODO: order services from lower layer to upper layer
 302             Map<ConnectivityServiceKey, ConnectivityService> connServMap
 303                     = optConnContext.orElseThrow().getConnectivityService();
 304             if (connServMap == null) {
 305                 LOG.info("No connections to update");
 306                 return;
 307             }
 308             connServMap = orderConnServiceMap(connServMap);
 309             for (ConnectivityService connService : connServMap.values()) {
 310                 LOG.info("Looping through connectivity service = {}", connService.getUuid().getValue());
 311                 if (connService.getConnection() == null) {
 312                     continue;
 313                 }
 314                 for (org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.connectivity.rev221121
 315                         .connectivity.service.Connection connection : connService.getConnection().values()) {
 316                     InstanceIdentifier<Connection> connIID =
 317                         InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 318                             .onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 319                                 .child(org.opendaylight.yang.gen.v1.urn
 320                                         .onf.otcc.yang.tapi.connectivity.rev221121.context.ConnectivityContext.class)
 321                                 .child(Connection.class, new ConnectionKey(connection.getConnectionUuid()))
 322                                 .build();
 323                     Optional<Connection> optConn =
 324                         this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connIID).get();
 325                     if (optConn.isEmpty()) {
 326                         LOG.error(TapiStringConstants.TAPI_CONNECTION_READ_ERROR);
 327                         continue;
 328                     }
 329                     Connection newConn = optConn.orElseThrow();
 330                     // Check LowerConnection states and if any of the lower connection is disabled then we can put
 331                     // the connection out of service. And based on the connection previous state we decide
 332                     // the update necessary
 333                     OperationalState newConnState = newConn.getOperationalState();
 334                     if (newConn.getLowerConnection() != null) {
 335                         newConnState = updateLowerConnections(changedOneps, onepStates,
 336                                 newConn.getLowerConnection().values(), newConn.getOperationalState());
 337                     }
 338                     if (newConnState.equals(newConn.getOperationalState())) {
 339                         // To check if the oneps are from the original Top connection
 340                         newConnState = getConnectionState(changedOneps, onepStates, newConn);
 341                     }
 342                     LOG.debug("Analysing connection = {} ", newConn.getName().toString());
 343                     LOG.info("Previous connection state = {} & New connection state = {}",
 344                             newConn.getOperationalState().getName(), newConnState.getName());
 345                     Connection changedConn = new ConnectionBuilder(newConn).setOperationalState(newConnState).build();
 346                     // TODO: the changed NEP is a DEG port which is not in any connection,
 347                     //  therefore we also need to change the cross connections,
 348                     //  the lower connections uuid and check the states.
 349                     //  If any of the lower connections of a connection is DISABLED then the top connection is DISABLED
 350                     this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, connIID, changedConn);
 351                     this.networkTransactionService.commit().get();
 352                 }
 353             }
 354         } catch (InterruptedException | ExecutionException e) {
 355             LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 356         }
 357     }
 358
 359     private Map<ConnectivityServiceKey, ConnectivityService> orderConnServiceMap(
 360             Map<ConnectivityServiceKey, ConnectivityService> connServMap) {
 361         Map<ConnectivityServiceKey, ConnectivityService> orderedServiceMap = new HashMap<>();
 362         for (LayerProtocolName lpn:this.orderedServiceLayerList) {
 363             for (ConnectivityService connServ:connServMap.values()) {
 364                 if (connServ.getLayerProtocolName().equals(lpn)) {
 365                     LOG.info("Layer of service is equal to entry of lpn = {}", lpn);
 366                     orderedServiceMap.put(connServ.key(), connServ);
 367                 }
 368             }
 369         }
 370         LOG.info("Ordered map of services = {}", orderedServiceMap);
 371         return orderedServiceMap;
 372     }
 373
 374     private OperationalState updateLowerConnections(List<Uuid> changedOneps, List<String> onepStates,
 375                                                     Collection<LowerConnection> lowerConnections,
 376                                                     OperationalState uppConnState) {
 377         LOG.info("Updating lower connections");
 378         OperationalState topConnectionState = uppConnState;
 379         Boolean allLowerConnEna = true;
 380         try {
 381             for (LowerConnection lowerConn:lowerConnections) {
 382                 InstanceIdentifier<Connection> connIID =
 383                     InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 384                         .onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 385                             .child(org.opendaylight.yang.gen.v1.urn
 386                                     .onf.otcc.yang.tapi.connectivity.rev221121.context.ConnectivityContext.class)
 387                             .child(Connection.class, new ConnectionKey(lowerConn.getConnectionUuid()))
 388                             .build();
 389                 Optional<Connection> optConn =
 390                         this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connIID).get();
 391                 if (optConn.isEmpty()) {
 392                     LOG.error(TapiStringConstants.TAPI_CONNECTION_READ_ERROR);
 393                     continue;
 394                 }
 395                 Connection newConn = optConn.orElseThrow(); // Current state of connection
 396                 if (newConn.getLowerConnection() != null) {
 397                     // TODO: we can receive disable here because the lower connection haven been yet looped through and
 398                     //  therefore it is disabled but it has to be changed to enable before returning disable.
 399                     //  We need to recall the update Lower Connections with the lower connection we are checking now
 400                     //  and all its lower connections, until no lower connections are found in the connection
 401                     updateLowerConnections(changedOneps, onepStates, newConn.getLowerConnection().values(),
 402                             newConn.getOperationalState());
 403                 }
 404                 OperationalState newConnState = getConnectionState(changedOneps, onepStates, newConn);
 405                 // updated connection state if it contains a nep that has changed
 406                 if (!newConn.getOperationalState().equals(newConnState)) {
 407                     Connection changedConn = new ConnectionBuilder(newConn).setOperationalState(newConnState).build();
 408                     this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, connIID, changedConn);
 409                     this.networkTransactionService.commit().get();
 410                 }
 411                 if (newConnState.equals(OperationalState.DISABLED)) {
 412                     LOG.info("LowerConnection state is disable");
 413                     allLowerConnEna = false;
 414                     topConnectionState = OperationalState.DISABLED;
 415                 }
 416             }
 417             if (allLowerConnEna) {
 418                 return OperationalState.ENABLED;
 419             }
 420             return OperationalState.DISABLED;
 421         } catch (InterruptedException | ExecutionException e) {
 422             LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 423             return topConnectionState;
 424         }
 425     }
 426
 427     private OperationalState getConnectionState(List<Uuid> changedOneps, List<String> operState, Connection conn)
 428             throws InterruptedException, ExecutionException {
 429         LOG.info("Getting TAPI connectionState");
 430         List<Uuid> connectionNeps = Objects.requireNonNull(conn.getConnectionEndPoint()).values().stream()
 431             .map(NodeEdgePointRef::getNodeEdgePointUuid).collect(Collectors.toList());
 432         LOG.info("Changed neps = {}", changedOneps);
 433         LOG.info("Connection NEPs = {}", connectionNeps);
 434         if (!Collections.disjoint(changedOneps, connectionNeps)) {
 435             LOG.info("Connection neps {} are included in changed oneps {}", connectionNeps, changedOneps);
 436             if ((changedOneps.contains(connectionNeps.get(0)) ? transformOperState(operState.get(
 437                     changedOneps.indexOf(connectionNeps.get(0)))) : null) == OperationalState.DISABLED
 438                         || (changedOneps.contains(connectionNeps.get(1)) ? transformOperState(operState.get(
 439                                 changedOneps.indexOf(connectionNeps.get(1)))) : null) == OperationalState.DISABLED) {
 440                 return OperationalState.DISABLED;
 441             }
 442             LOG.info("Didnt transform correctly the states");
 443             for (Uuid connectionNep : connectionNeps) {
 444                 Optional<org.opendaylight.yang.gen.v1.urn
 445                         .onf.otcc.yang.tapi.connectivity.rev221121.connection.ConnectionEndPoint> ocep
 446                     = conn.getConnectionEndPoint().values().stream()
 447                         .filter(connectionEndPoint -> connectionEndPoint.getNodeEdgePointUuid() == connectionNep)
 448                         .findFirst();
 449                 if (ocep.isEmpty()) {
 450                     continue;
 451                 }
 452                 InstanceIdentifier<OwnedNodeEdgePoint> onepIID = InstanceIdentifier.builder(Context.class)
 453                     .augmentation(Context1.class).child(TopologyContext.class)
 454                     .child(Topology.class, new TopologyKey(tapiTopoUuid))
 455                     .child(Node.class, new NodeKey(ocep.orElseThrow().getNodeUuid()))
 456                     .child(OwnedNodeEdgePoint.class, new OwnedNodeEdgePointKey(connectionNep))
 457                     .build();
 458                 Optional<OwnedNodeEdgePoint> onep =
 459                     this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, onepIID).get();
 460                 if (onep.isEmpty() || onep.orElseThrow().augmentation(OwnedNodeEdgePoint1.class) == null
 461                         || onep.orElseThrow().augmentation(OwnedNodeEdgePoint1.class).getCepList() == null) {
 462                     continue;
 463                 }
 464                 if (onep.orElseThrow().getOperationalState() == OperationalState.DISABLED
 465                         && !changedOneps.contains(onep.orElseThrow().getUuid())) {
 466                     return OperationalState.DISABLED;
 467                 }
 468             }
 469             return OperationalState.ENABLED;
 470         }
 471         LOG.info("Connection state = {}. Going to check lower connections", conn.getOperationalState());
 472         // TODO --> check all lower connections state and if all of them are enabled we return enable, otherwise disable
 473         if (conn.getLowerConnection() != null && allLowerConEnabled(conn.getLowerConnection().values())) {
 474             return OperationalState.ENABLED;
 475         }
 476         return conn.getOperationalState();
 477     }
 478
 479     private boolean allLowerConEnabled(Collection<LowerConnection> lowerConnections) {
 480         try {
 481             for (LowerConnection lowerConn:lowerConnections) {
 482                 InstanceIdentifier<Connection> connIID =
 483                     InstanceIdentifier.builder(Context.class).augmentation(org.opendaylight.yang.gen.v1.urn
 484                             .onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 485                         .child(org.opendaylight.yang.gen.v1.urn
 486                             .onf.otcc.yang.tapi.connectivity.rev221121.context
 487                             .ConnectivityContext.class)
 488                         .child(Connection.class, new ConnectionKey(lowerConn.getConnectionUuid()))
 489                         .build();
 490                 Optional<Connection> optConn =
 491                     this.networkTransactionService.read(LogicalDatastoreType.OPERATIONAL, connIID).get();
 492                 if (optConn.isEmpty()) {
 493                     LOG.error(TapiStringConstants.TAPI_CONNECTION_READ_ERROR);
 494                     continue;
 495                 }
 496                 Connection newConn = optConn.orElseThrow(); // Current state of connection
 497                 // updated connection state if it contains a nep that has changed
 498                 if (newConn.getOperationalState().equals(OperationalState.DISABLED)) {
 499                     LOG.info("LowerConnection state is disable");
 500                     return false;
 501                 }
 502             }
 503             return true;
 504         } catch (InterruptedException | ExecutionException e) {
 505             LOG.error(TapiStringConstants.TAPI_CONNECTION_UPDATE_ERROR);
 506             return false;
 507         }
 508     }
 509
 510     private List<ConnectivityService> updateSupportedConnectivityServices(Collection<ConnectivityService> connServices,
 511                                                                           Uuid supportingConnService,
 512                                                                           AdministrativeState adminState,
 513                                                                           OperationalState operState,
 514                                                                           LayerProtocolName layer) {
 515         // TODO we need to check this function
 516         List<ConnectivityService> changedServices = new ArrayList<>();
 517         if (adminState != AdministrativeState.LOCKED && operState != OperationalState.DISABLED) {
 518             return changedServices;
 519         }
 520         try {
 521             for (ConnectivityService supportedConnService : connServices) {
 522                 // TODO currently supporting service uuid is saved in service layer, replace with name as soon
 523                 // as name is implemented
 524                 if (supportedConnService.getLayerProtocolName() != layer) {
 525                     continue;
 526                 }
 527                 InstanceIdentifier<ConnectivityService> supportedConnServIID = InstanceIdentifier
 528                     .builder(Context.class).augmentation(org.opendaylight.yang.gen.v1
 529                         .urn.onf.otcc.yang.tapi.connectivity.rev221121.Context1.class)
 530                     .child(org.opendaylight.yang.gen.v1
 531                         .urn.onf.otcc.yang.tapi.connectivity.rev221121.context.ConnectivityContext.class)
 532                     .child(ConnectivityService.class, new ConnectivityServiceKey(supportedConnService.getUuid()))
 533                     .build();
 534                 Optional<ConnectivityService> optNewConnService = this.networkTransactionService.read(
 535                     LogicalDatastoreType.OPERATIONAL, supportedConnServIID).get();
 536                 if (optNewConnService.isEmpty()) {
 537                     LOG.error("Could not update TAPI connectivity service");
 538                     continue;
 539                 }
 540                 ConnectivityService newConnService = optNewConnService.orElseThrow();
 541                 if (supportedConnService.getConnectivityConstraint().getServiceLevel() != null
 542                         && supportedConnService.getConnectivityConstraint().getServiceLevel()
 543                             .equals(supportingConnService.getValue())
 544                         && newConnService.getAdministrativeState() != AdministrativeState.LOCKED
 545                         && newConnService.getOperationalState() != OperationalState.DISABLED) {
 546
 547                     ConnectivityService changedSupportedConnServ = new ConnectivityServiceBuilder()
 548                         .setUuid(supportedConnService.getUuid())
 549                         .setAdministrativeState(adminState)
 550                         .setOperationalState(operState)
 551                         .build();
 552                     // TODO: may need to update connections...
 553                     this.networkTransactionService.merge(LogicalDatastoreType.OPERATIONAL, supportedConnServIID,
 554                         changedSupportedConnServ);
 555                     this.networkTransactionService.commit().get();
 556                     changedServices.add(changedSupportedConnServ);
 557                     if (layer == LayerProtocolName.ODU) {
 558                         changedServices.addAll(updateSupportedConnectivityServices(connServices,
 559                             supportedConnService.getUuid(), adminState, operState, LayerProtocolName.DSR));
 560                     }
 561                 }
 562             }
 563         } catch (InterruptedException | ExecutionException e) {
 564             LOG.error("Could not update TAPI connectivity service");
 565         }
 566         return changedServices;
 567     }
 568
 569     private OperationalState transformOperState(String operString) {
 570         LOG.debug("Operstring to be converted = {}", operString);
 571         State operState = org.opendaylight.transportpce.networkmodel.util.TopologyUtils.setNetworkOperState(operString);
 572         LOG.debug("State received from topologyutils = {}", operState);
 573         return operState.equals(State.InService) ? OperationalState.ENABLED : OperationalState.DISABLED;
 574     }
 575
 576 }