restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/rests/services/impl/RestconfDataServiceImpl.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.restconf.nb.rfc8040.rests.services.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfDataServiceConstant.PostPutQueryParameters.INSERT;
  12 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfDataServiceConstant.PostPutQueryParameters.POINT;
  13 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.NOTIFICATION_STREAM;
  14 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAMS_PATH;
  15 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAM_ACCESS_PATH_PART;
  16 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAM_LOCATION_PATH_PART;
  17 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAM_PATH;
  18 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAM_PATH_PART;
  19
  20 import java.net.URI;
  21 import java.time.Clock;
  22 import java.time.LocalDateTime;
  23 import java.time.format.DateTimeFormatter;
  24 import java.util.List;
  25 import java.util.Map.Entry;
  26 import java.util.Optional;
  27 import java.util.concurrent.ExecutionException;
  28 import javax.ws.rs.Path;
  29 import javax.ws.rs.WebApplicationException;
  30 import javax.ws.rs.core.Response;
  31 import javax.ws.rs.core.UriInfo;
  32 import org.eclipse.jdt.annotation.NonNull;
  33 import org.eclipse.jdt.annotation.Nullable;
  34 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  35 import org.opendaylight.mdsal.dom.api.DOMActionResult;
  36 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  37 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
  38 import org.opendaylight.netconf.dom.api.NetconfDataTreeService;
  39 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
  40 import org.opendaylight.restconf.common.context.NormalizedNodeContext;
  41 import org.opendaylight.restconf.common.context.WriterParameters;
  42 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
  43 import org.opendaylight.restconf.common.errors.RestconfError;
  44 import org.opendaylight.restconf.common.errors.RestconfError.ErrorTag;
  45 import org.opendaylight.restconf.common.errors.RestconfError.ErrorType;
  46 import org.opendaylight.restconf.common.patch.PatchContext;
  47 import org.opendaylight.restconf.common.patch.PatchStatusContext;
  48 import org.opendaylight.restconf.nb.rfc8040.Rfc8040;
  49 import org.opendaylight.restconf.nb.rfc8040.handlers.ActionServiceHandler;
  50 import org.opendaylight.restconf.nb.rfc8040.handlers.DOMMountPointServiceHandler;
  51 import org.opendaylight.restconf.nb.rfc8040.handlers.SchemaContextHandler;
  52 import org.opendaylight.restconf.nb.rfc8040.handlers.TransactionChainHandler;
  53 import org.opendaylight.restconf.nb.rfc8040.rests.services.api.RestconfDataService;
  54 import org.opendaylight.restconf.nb.rfc8040.rests.services.api.RestconfStreamsSubscriptionService;
  55 import org.opendaylight.restconf.nb.rfc8040.rests.transactions.MdsalRestconfStrategy;
  56 import org.opendaylight.restconf.nb.rfc8040.rests.transactions.NetconfRestconfStrategy;
  57 import org.opendaylight.restconf.nb.rfc8040.rests.transactions.RestconfStrategy;
  58 import org.opendaylight.restconf.nb.rfc8040.rests.utils.DeleteDataTransactionUtil;
  59 import org.opendaylight.restconf.nb.rfc8040.rests.utils.PatchDataTransactionUtil;
  60 import org.opendaylight.restconf.nb.rfc8040.rests.utils.PlainPatchDataTransactionUtil;
  61 import org.opendaylight.restconf.nb.rfc8040.rests.utils.PostDataTransactionUtil;
  62 import org.opendaylight.restconf.nb.rfc8040.rests.utils.PutDataTransactionUtil;
  63 import org.opendaylight.restconf.nb.rfc8040.rests.utils.ReadDataTransactionUtil;
  64 import org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfDataServiceConstant;
  65 import org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfInvokeOperationsUtil;
  66 import org.opendaylight.restconf.nb.rfc8040.streams.listeners.NotificationListenerAdapter;
  67 import org.opendaylight.restconf.nb.rfc8040.utils.mapping.RestconfMappingNodeUtil;
  68 import org.opendaylight.restconf.nb.rfc8040.utils.parser.IdentifierCodec;
  69 import org.opendaylight.restconf.nb.rfc8040.utils.parser.ParserIdentifier;
  70 import org.opendaylight.yang.gen.v1.urn.sal.restconf.event.subscription.rev140708.NotificationOutputTypeGrouping.NotificationOutputType;
  71 import org.opendaylight.yangtools.concepts.Immutable;
  72 import org.opendaylight.yangtools.yang.common.QName;
  73 import org.opendaylight.yangtools.yang.common.Revision;
  74 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  75 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  76 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  77 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
  78 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  79 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
  80 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
  81 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  82 import org.slf4j.Logger;
  83 import org.slf4j.LoggerFactory;
  84
  85 /**
  86  * Implementation of {@link RestconfDataService}.
  87  */
  88 @Path("/")
  89 public class RestconfDataServiceImpl implements RestconfDataService {
  90     private static final class QueryParams implements Immutable {
  91         final @Nullable String point;
  92         final @Nullable String insert;
  93
  94         QueryParams(final @Nullable String insert, final @Nullable String point) {
  95             this.insert = insert;
  96             this.point = point;
  97         }
  98     }
  99
 100     private static final Logger LOG = LoggerFactory.getLogger(RestconfDataServiceImpl.class);
 101     private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyy-MMM-dd HH:mm:ss");
 102
 103     private final RestconfStreamsSubscriptionService delegRestconfSubscrService;
 104
 105     // FIXME: evaluate thread-safety of updates (synchronized) vs. access (mostly unsynchronized) here
 106     private SchemaContextHandler schemaContextHandler;
 107     private TransactionChainHandler transactionChainHandler;
 108     private DOMMountPointServiceHandler mountPointServiceHandler;
 109     private volatile ActionServiceHandler actionServiceHandler;
 110
 111     public RestconfDataServiceImpl(final SchemaContextHandler schemaContextHandler,
 112             final TransactionChainHandler transactionChainHandler,
 113             final DOMMountPointServiceHandler mountPointServiceHandler,
 114             final RestconfStreamsSubscriptionService delegRestconfSubscrService,
 115             final ActionServiceHandler actionServiceHandler) {
 116         this.actionServiceHandler = requireNonNull(actionServiceHandler);
 117         this.schemaContextHandler = requireNonNull(schemaContextHandler);
 118         this.transactionChainHandler = requireNonNull(transactionChainHandler);
 119         this.mountPointServiceHandler = requireNonNull(mountPointServiceHandler);
 120         this.delegRestconfSubscrService = requireNonNull(delegRestconfSubscrService);
 121     }
 122
 123     @Override
 124     public synchronized void updateHandlers(final Object... handlers) {
 125         for (final Object object : handlers) {
 126             if (object instanceof SchemaContextHandler) {
 127                 schemaContextHandler = (SchemaContextHandler) object;
 128             } else if (object instanceof ActionServiceHandler) {
 129                 actionServiceHandler = (ActionServiceHandler) object;
 130             } else if (object instanceof DOMMountPointServiceHandler) {
 131                 mountPointServiceHandler = (DOMMountPointServiceHandler) object;
 132             } else if (object instanceof TransactionChainHandler) {
 133                 transactionChainHandler = (TransactionChainHandler) object;
 134             }
 135         }
 136     }
 137
 138     @Override
 139     public Response readData(final UriInfo uriInfo) {
 140         return readData(null, uriInfo);
 141     }
 142
 143     @Override
 144     public Response readData(final String identifier, final UriInfo uriInfo) {
 145         final EffectiveModelContext schemaContextRef = this.schemaContextHandler.get();
 146         final InstanceIdentifierContext<?> instanceIdentifier = ParserIdentifier.toInstanceIdentifier(
 147                 identifier, schemaContextRef, Optional.of(this.mountPointServiceHandler.get()));
 148         final WriterParameters parameters = ReadDataTransactionUtil.parseUriParameters(instanceIdentifier, uriInfo);
 149
 150         final DOMMountPoint mountPoint = instanceIdentifier.getMountPoint();
 151         final RestconfStrategy strategy = getRestconfStrategy(instanceIdentifier, mountPoint);
 152         final NormalizedNode<?, ?> node = readData(identifier, parameters.getContent(),
 153                 strategy, parameters.getWithDefault(), schemaContextRef, uriInfo);
 154         if (identifier != null && identifier.contains(STREAM_PATH) && identifier.contains(STREAM_ACCESS_PATH_PART)
 155                 && identifier.contains(STREAM_LOCATION_PATH_PART)) {
 156             final String value = (String) node.getValue();
 157             final String streamName = value.substring(value.indexOf(NOTIFICATION_STREAM + '/'));
 158             this.delegRestconfSubscrService.subscribeToStream(streamName, uriInfo);
 159         }
 160         if (node == null) {
 161             throw new RestconfDocumentedException(
 162                     "Request could not be completed because the relevant data model content does not exist",
 163                     RestconfError.ErrorType.PROTOCOL,
 164                     RestconfError.ErrorTag.DATA_MISSING);
 165         }
 166
 167         if (parameters.getContent().equals(RestconfDataServiceConstant.ReadData.ALL)
 168                     || parameters.getContent().equals(RestconfDataServiceConstant.ReadData.CONFIG)) {
 169             final QName type = node.getNodeType();
 170             return Response.status(200)
 171                     .entity(new NormalizedNodeContext(instanceIdentifier, node, parameters))
 172                     .header("ETag", '"' + type.getModule().getRevision().map(Revision::toString).orElse(null)
 173                         + "-" + type.getLocalName() + '"')
 174                     .header("Last-Modified", FORMATTER.format(LocalDateTime.now(Clock.systemUTC())))
 175                     .build();
 176         }
 177
 178         return Response.status(200).entity(new NormalizedNodeContext(instanceIdentifier, node, parameters)).build();
 179     }
 180
 181     /**
 182      * Read specific type of data from data store via transaction and if identifier read data from
 183      * streams then put streams from actual schema context to datastore.
 184      *
 185      * @param identifier    identifier of data to read
 186      * @param content       type of data to read (config, state, all)
 187      * @param strategy      {@link RestconfStrategy} - object that perform the actual DS operations
 188      * @param withDefa      vaule of with-defaults parameter
 189      * @param schemaContext schema context
 190      * @param uriInfo       uri info
 191      * @return {@link NormalizedNode}
 192      */
 193     public static NormalizedNode<?, ?> readData(final String identifier, final String content,
 194                                                 final RestconfStrategy strategy, final String withDefa,
 195                                                 final EffectiveModelContext schemaContext, final UriInfo uriInfo) {
 196         if (identifier != null && identifier.contains(STREAMS_PATH) && !identifier.contains(STREAM_PATH_PART)) {
 197             createAllYangNotificationStreams(strategy, schemaContext, uriInfo);
 198         }
 199         return ReadDataTransactionUtil.readData(content, strategy, withDefa, schemaContext);
 200     }
 201
 202     private static void createAllYangNotificationStreams(final RestconfStrategy strategy,
 203                                                          final EffectiveModelContext schemaContext,
 204                                                          final UriInfo uriInfo) {
 205         strategy.prepareReadWriteExecution();
 206         final boolean exist = checkExist(schemaContext, strategy);
 207
 208         for (final NotificationDefinition notificationDefinition : schemaContext.getNotifications()) {
 209             final NotificationListenerAdapter notifiStreamXML =
 210                 CreateStreamUtil.createYangNotifiStream(notificationDefinition, schemaContext,
 211                     NotificationOutputType.XML);
 212             final NotificationListenerAdapter notifiStreamJSON =
 213                 CreateStreamUtil.createYangNotifiStream(notificationDefinition, schemaContext,
 214                     NotificationOutputType.JSON);
 215             writeNotificationStreamToDatastore(schemaContext, uriInfo, strategy, exist, notifiStreamXML);
 216             writeNotificationStreamToDatastore(schemaContext, uriInfo, strategy, exist, notifiStreamJSON);
 217         }
 218         try {
 219             strategy.commit().get();
 220         } catch (final InterruptedException | ExecutionException e) {
 221             throw new RestconfDocumentedException("Problem while putting data to DS.", e);
 222         }
 223     }
 224
 225     private static void writeNotificationStreamToDatastore(final EffectiveModelContext schemaContext,
 226                                                            final UriInfo uriInfo, final RestconfStrategy strategy,
 227                                                            final boolean exist,
 228                                                            final NotificationListenerAdapter listener) {
 229         final URI uri = SubscribeToStreamUtil.prepareUriByStreamName(uriInfo, listener.getStreamName());
 230         final NormalizedNode<?, ?> mapToStreams =
 231             RestconfMappingNodeUtil.mapYangNotificationStreamByIetfRestconfMonitoring(
 232                 listener.getSchemaPath().getLastComponent(), schemaContext.getNotifications(), null,
 233                 listener.getOutputType(), uri, SubscribeToStreamUtil.getMonitoringModule(schemaContext), exist);
 234         writeDataToDS(schemaContext,
 235             listener.getSchemaPath().getLastComponent().getLocalName(), strategy, exist, mapToStreams);
 236     }
 237
 238     private static boolean checkExist(final EffectiveModelContext schemaContext, final RestconfStrategy strategy) {
 239         try {
 240             return strategy.exists(LogicalDatastoreType.OPERATIONAL,
 241                 IdentifierCodec.deserialize(Rfc8040.MonitoringModule.PATH_TO_STREAMS, schemaContext)).get();
 242         } catch (final InterruptedException | ExecutionException exception) {
 243             throw new RestconfDocumentedException("Problem while checking data if exists", exception);
 244         }
 245     }
 246
 247     private static void writeDataToDS(final EffectiveModelContext schemaContext, final String name,
 248                                       final RestconfStrategy strategy, final boolean exist,
 249                                       final NormalizedNode mapToStreams) {
 250         String pathId;
 251         if (exist) {
 252             pathId = Rfc8040.MonitoringModule.PATH_TO_STREAM_WITHOUT_KEY + name;
 253         } else {
 254             pathId = Rfc8040.MonitoringModule.PATH_TO_STREAMS;
 255         }
 256         strategy.merge(LogicalDatastoreType.OPERATIONAL,
 257             IdentifierCodec.deserialize(pathId, schemaContext), mapToStreams);
 258     }
 259
 260     @Override
 261     public Response putData(final String identifier, final NormalizedNodeContext payload, final UriInfo uriInfo) {
 262         requireNonNull(payload);
 263
 264         final QueryParams checkedParms = checkQueryParameters(uriInfo);
 265
 266         final InstanceIdentifierContext<? extends SchemaNode> iid = payload
 267                 .getInstanceIdentifierContext();
 268
 269         PutDataTransactionUtil.validInputData(iid.getSchemaNode(), payload);
 270         PutDataTransactionUtil.validTopLevelNodeName(iid.getInstanceIdentifier(), payload);
 271         PutDataTransactionUtil.validateListKeysEqualityInPayloadAndUri(payload);
 272
 273         final DOMMountPoint mountPoint = payload.getInstanceIdentifierContext().getMountPoint();
 274         final EffectiveModelContext ref = mountPoint == null
 275                 ? this.schemaContextHandler.get()
 276                 : mountPoint.getEffectiveModelContext();
 277
 278         final RestconfStrategy strategy = getRestconfStrategy(payload.getInstanceIdentifierContext(), mountPoint);
 279         return PutDataTransactionUtil.putData(payload, ref, strategy, checkedParms.insert, checkedParms.point);
 280     }
 281
 282     private static QueryParams checkQueryParameters(final UriInfo uriInfo) {
 283         boolean insertUsed = false;
 284         boolean pointUsed = false;
 285         String insert = null;
 286         String point = null;
 287
 288         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
 289             switch (entry.getKey()) {
 290                 case INSERT:
 291                     if (!insertUsed) {
 292                         insertUsed = true;
 293                         insert = entry.getValue().get(0);
 294                     } else {
 295                         throw new RestconfDocumentedException("Insert parameter can be used only once.",
 296                                 RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 297                     }
 298                     break;
 299                 case POINT:
 300                     if (!pointUsed) {
 301                         pointUsed = true;
 302                         point = entry.getValue().get(0);
 303                     } else {
 304                         throw new RestconfDocumentedException("Point parameter can be used only once.",
 305                                 RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 306                     }
 307                     break;
 308                 default:
 309                     throw new RestconfDocumentedException("Bad parameter for post: " + entry.getKey(),
 310                             RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 311             }
 312         }
 313
 314         checkQueryParams(insertUsed, pointUsed, insert);
 315         return new QueryParams(insert, point);
 316     }
 317
 318     private static void checkQueryParams(final boolean insertUsed, final boolean pointUsed, final String insert) {
 319         if (pointUsed && !insertUsed) {
 320             throw new RestconfDocumentedException("Point parameter can't be used without Insert parameter.",
 321                     RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 322         }
 323         if (pointUsed && (insert.equals("first") || insert.equals("last"))) {
 324             throw new RestconfDocumentedException(
 325                     "Point parameter can be used only with 'after' or 'before' values of Insert parameter.",
 326                     RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 327         }
 328     }
 329
 330     @Override
 331     public Response postData(final String identifier, final NormalizedNodeContext payload, final UriInfo uriInfo) {
 332         return postData(payload, uriInfo);
 333     }
 334
 335     @Override
 336     public Response postData(final NormalizedNodeContext payload, final UriInfo uriInfo) {
 337         requireNonNull(payload);
 338         if (payload.getInstanceIdentifierContext().getSchemaNode() instanceof ActionDefinition) {
 339             return invokeAction(payload);
 340         }
 341
 342         final QueryParams checkedParms = checkQueryParameters(uriInfo);
 343         final DOMMountPoint mountPoint = payload.getInstanceIdentifierContext().getMountPoint();
 344         final RestconfStrategy strategy = getRestconfStrategy(payload.getInstanceIdentifierContext(),
 345                 payload.getInstanceIdentifierContext().getMountPoint());
 346         return PostDataTransactionUtil.postData(uriInfo, payload, strategy,
 347                 getSchemaContext(mountPoint), checkedParms.insert, checkedParms.point);
 348     }
 349
 350     @Override
 351     public Response deleteData(final String identifier) {
 352         final InstanceIdentifierContext<?> instanceIdentifier = ParserIdentifier.toInstanceIdentifier(
 353                 identifier, this.schemaContextHandler.get(), Optional.of(this.mountPointServiceHandler.get()));
 354
 355         final DOMMountPoint mountPoint = instanceIdentifier.getMountPoint();
 356         final RestconfStrategy strategy = getRestconfStrategy(instanceIdentifier, mountPoint);
 357         return DeleteDataTransactionUtil.deleteData(strategy);
 358     }
 359
 360     @Override
 361     public PatchStatusContext patchData(final String identifier, final PatchContext context, final UriInfo uriInfo) {
 362         return patchData(context, uriInfo);
 363     }
 364
 365     @Override
 366     public PatchStatusContext patchData(final PatchContext context, final UriInfo uriInfo) {
 367         final DOMMountPoint mountPoint = requireNonNull(context).getInstanceIdentifierContext().getMountPoint();
 368         final RestconfStrategy strategy = getRestconfStrategy(context.getInstanceIdentifierContext(), mountPoint);
 369         return PatchDataTransactionUtil.patchData(context, strategy, getSchemaContext(mountPoint));
 370     }
 371
 372     @Override
 373     public Response patchData(final String identifier, final NormalizedNodeContext payload, final UriInfo uriInfo) {
 374         requireNonNull(payload);
 375
 376         final InstanceIdentifierContext<? extends SchemaNode> iid = payload
 377                 .getInstanceIdentifierContext();
 378
 379         PutDataTransactionUtil.validInputData(iid.getSchemaNode(), payload);
 380         PutDataTransactionUtil.validTopLevelNodeName(iid.getInstanceIdentifier(), payload);
 381         PutDataTransactionUtil.validateListKeysEqualityInPayloadAndUri(payload);
 382
 383         final DOMMountPoint mountPoint = payload.getInstanceIdentifierContext().getMountPoint();
 384         final EffectiveModelContext ref = mountPoint == null
 385                 ? this.schemaContextHandler.get()
 386                 : mountPoint.getEffectiveModelContext();
 387         final RestconfStrategy strategy = getRestconfStrategy(payload.getInstanceIdentifierContext(), mountPoint);
 388
 389         return PlainPatchDataTransactionUtil.patchData(payload, strategy, ref);
 390     }
 391
 392     private EffectiveModelContext getSchemaContext(final DOMMountPoint mountPoint) {
 393         return mountPoint == null ? schemaContextHandler.get() : mountPoint.getEffectiveModelContext();
 394     }
 395
 396     public synchronized RestconfStrategy getRestconfStrategy(final InstanceIdentifierContext<?> instanceIdentifier,
 397                                                 final DOMMountPoint mountPoint) {
 398         if (mountPoint != null) {
 399             final Optional<NetconfDataTreeService> service = mountPoint.getService(NetconfDataTreeService.class);
 400             if (service.isPresent()) {
 401                 return new NetconfRestconfStrategy(service.get(), instanceIdentifier);
 402             }
 403         }
 404         final TransactionChainHandler transactionChain = mountPoint == null
 405                 ? transactionChainHandler : transactionChainOfMountPoint(mountPoint);
 406         return new MdsalRestconfStrategy(instanceIdentifier, transactionChain);
 407     }
 408
 409     /**
 410      * Prepare transaction chain to access data of mount point.
 411      *
 412      * @param mountPoint mount point reference
 413      * @return {@link TransactionChainHandler}
 414      */
 415     private static TransactionChainHandler transactionChainOfMountPoint(final @NonNull DOMMountPoint mountPoint) {
 416         final Optional<DOMDataBroker> domDataBrokerService = mountPoint.getService(DOMDataBroker.class);
 417         if (domDataBrokerService.isPresent()) {
 418             return new TransactionChainHandler(domDataBrokerService.get());
 419         }
 420
 421         final String errMsg = "DOM data broker service isn't available for mount point " + mountPoint.getIdentifier();
 422         LOG.warn(errMsg);
 423         throw new RestconfDocumentedException(errMsg);
 424     }
 425
 426     /**
 427      * Invoke Action operation.
 428      *
 429      * @param payload {@link NormalizedNodeContext} - the body of the operation
 430      * @return {@link NormalizedNodeContext} wrapped in {@link Response}
 431      */
 432     public Response invokeAction(final NormalizedNodeContext payload) {
 433         final InstanceIdentifierContext<?> context = payload.getInstanceIdentifierContext();
 434         final DOMMountPoint mountPoint = context.getMountPoint();
 435         final SchemaPath schemaPath = context.getSchemaNode().getPath();
 436         final YangInstanceIdentifier yangIIdContext = context.getInstanceIdentifier();
 437         final NormalizedNode<?, ?> data = payload.getData();
 438
 439         if (yangIIdContext.isEmpty() && !RestconfDataServiceConstant.NETCONF_BASE_QNAME.equals(data.getNodeType())) {
 440             throw new RestconfDocumentedException("Instance identifier need to contain at least one path argument",
 441                 ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
 442         }
 443
 444         final DOMActionResult response;
 445         final EffectiveModelContext schemaContextRef;
 446         if (mountPoint != null) {
 447             response = RestconfInvokeOperationsUtil.invokeActionViaMountPoint(mountPoint, (ContainerNode) data,
 448                 schemaPath, yangIIdContext);
 449             schemaContextRef = mountPoint.getEffectiveModelContext();
 450         } else {
 451             response = RestconfInvokeOperationsUtil.invokeAction((ContainerNode) data, schemaPath,
 452                 this.actionServiceHandler, yangIIdContext);
 453             schemaContextRef = this.schemaContextHandler.get();
 454         }
 455         final DOMActionResult result = RestconfInvokeOperationsUtil.checkActionResponse(response);
 456
 457         ActionDefinition resultNodeSchema = null;
 458         ContainerNode resultData = null;
 459         if (result != null) {
 460             final Optional<ContainerNode> optOutput = result.getOutput();
 461             if (optOutput.isPresent()) {
 462                 resultData = optOutput.get();
 463                 resultNodeSchema = (ActionDefinition) context.getSchemaNode();
 464             }
 465         }
 466
 467         if (resultData != null && resultData.getValue().isEmpty()) {
 468             throw new WebApplicationException(Response.Status.NO_CONTENT);
 469         }
 470
 471         return Response.status(200).entity(new NormalizedNodeContext(new InstanceIdentifierContext<>(yangIIdContext,
 472                 resultNodeSchema, mountPoint, schemaContextRef), resultData)).build();
 473     }
 474 }