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 org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.CREATE_NOTIFICATION_STREAM;
  11 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAM_ACCESS_PATH_PART;
  12 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAM_LOCATION_PATH_PART;
  13 import static org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfStreamsConstants.STREAM_PATH;
  14
  15 import com.google.common.base.Preconditions;
  16 import java.time.Clock;
  17 import java.time.LocalDateTime;
  18 import java.time.format.DateTimeFormatter;
  19 import java.util.List;
  20 import java.util.Map.Entry;
  21 import java.util.Objects;
  22 import java.util.Optional;
  23 import javax.annotation.Nonnull;
  24 import javax.ws.rs.Path;
  25 import javax.ws.rs.core.Response;
  26 import javax.ws.rs.core.UriInfo;
  27 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  28 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
  29 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
  30 import org.opendaylight.restconf.common.context.NormalizedNodeContext;
  31 import org.opendaylight.restconf.common.context.WriterParameters;
  32 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
  33 import org.opendaylight.restconf.common.errors.RestconfError;
  34 import org.opendaylight.restconf.common.patch.PatchContext;
  35 import org.opendaylight.restconf.common.patch.PatchStatusContext;
  36 import org.opendaylight.restconf.nb.rfc8040.handlers.DOMMountPointServiceHandler;
  37 import org.opendaylight.restconf.nb.rfc8040.handlers.SchemaContextHandler;
  38 import org.opendaylight.restconf.nb.rfc8040.handlers.TransactionChainHandler;
  39 import org.opendaylight.restconf.nb.rfc8040.references.SchemaContextRef;
  40 import org.opendaylight.restconf.nb.rfc8040.rests.services.api.RestconfDataService;
  41 import org.opendaylight.restconf.nb.rfc8040.rests.services.api.RestconfStreamsSubscriptionService;
  42 import org.opendaylight.restconf.nb.rfc8040.rests.transactions.TransactionVarsWrapper;
  43 import org.opendaylight.restconf.nb.rfc8040.rests.utils.DeleteDataTransactionUtil;
  44 import org.opendaylight.restconf.nb.rfc8040.rests.utils.PatchDataTransactionUtil;
  45 import org.opendaylight.restconf.nb.rfc8040.rests.utils.PostDataTransactionUtil;
  46 import org.opendaylight.restconf.nb.rfc8040.rests.utils.PutDataTransactionUtil;
  47 import org.opendaylight.restconf.nb.rfc8040.rests.utils.ReadDataTransactionUtil;
  48 import org.opendaylight.restconf.nb.rfc8040.rests.utils.RestconfDataServiceConstant;
  49 import org.opendaylight.restconf.nb.rfc8040.utils.RestconfConstants;
  50 import org.opendaylight.restconf.nb.rfc8040.utils.parser.ParserIdentifier;
  51 import org.opendaylight.yangtools.yang.common.QName;
  52 import org.opendaylight.yangtools.yang.common.Revision;
  53 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  54 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
  55 import org.slf4j.Logger;
  56 import org.slf4j.LoggerFactory;
  57
  58 /**
  59  * Implementation of {@link RestconfDataService}.
  60  */
  61 @Path("/")
  62 public class RestconfDataServiceImpl implements RestconfDataService {
  63
  64     private static final Logger LOG = LoggerFactory.getLogger(RestconfDataServiceImpl.class);
  65     private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyy-MMM-dd HH:mm:ss");
  66
  67     private SchemaContextHandler schemaContextHandler;
  68     private TransactionChainHandler transactionChainHandler;
  69     private DOMMountPointServiceHandler mountPointServiceHandler;
  70
  71     private final RestconfStreamsSubscriptionService delegRestconfSubscrService;
  72
  73     public RestconfDataServiceImpl(final SchemaContextHandler schemaContextHandler,
  74                                    final TransactionChainHandler transactionChainHandler,
  75             final DOMMountPointServiceHandler mountPointServiceHandler,
  76             final RestconfStreamsSubscriptionService delegRestconfSubscrService) {
  77         this.schemaContextHandler = Objects.requireNonNull(schemaContextHandler);
  78         this.transactionChainHandler = Objects.requireNonNull(transactionChainHandler);
  79         this.mountPointServiceHandler = Objects.requireNonNull(mountPointServiceHandler);
  80         this.delegRestconfSubscrService = Objects.requireNonNull(delegRestconfSubscrService);
  81     }
  82
  83     @Override
  84     public synchronized void updateHandlers(final Object... handlers) {
  85         for (final Object object : handlers) {
  86             if (object instanceof SchemaContextHandler) {
  87                 schemaContextHandler = (SchemaContextHandler) object;
  88             } else if (object instanceof DOMMountPointServiceHandler) {
  89                 mountPointServiceHandler = (DOMMountPointServiceHandler) object;
  90             } else if (object instanceof TransactionChainHandler) {
  91                 transactionChainHandler = (TransactionChainHandler) object;
  92             }
  93         }
  94     }
  95
  96     @Override
  97     public Response readData(final UriInfo uriInfo) {
  98         return readData(null, uriInfo);
  99     }
 100
 101     @Override
 102     public Response readData(final String identifier, final UriInfo uriInfo) {
 103         final SchemaContextRef schemaContextRef = new SchemaContextRef(this.schemaContextHandler.get());
 104         final InstanceIdentifierContext<?> instanceIdentifier = ParserIdentifier.toInstanceIdentifier(
 105                 identifier, schemaContextRef.get(), Optional.of(this.mountPointServiceHandler.get()));
 106
 107         boolean withDefaUsed = false;
 108         String withDefa = null;
 109
 110         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
 111             switch (entry.getKey()) {
 112                 case "with-defaults":
 113                     if (!withDefaUsed) {
 114                         withDefaUsed = true;
 115                         withDefa = entry.getValue().iterator().next();
 116                     } else {
 117                         throw new RestconfDocumentedException("With-defaults parameter can be used only once.");
 118                     }
 119                     break;
 120                 default:
 121                     LOG.info("Unknown key : {}.", entry.getKey());
 122                     break;
 123             }
 124         }
 125         boolean tagged = false;
 126         if (withDefaUsed) {
 127             if ("report-all-tagged".equals(withDefa)) {
 128                 tagged = true;
 129                 withDefa = null;
 130             }
 131             if ("report-all".equals(withDefa)) {
 132                 withDefa = null;
 133             }
 134         }
 135
 136         final WriterParameters parameters = ReadDataTransactionUtil.parseUriParameters(
 137                 instanceIdentifier, uriInfo, tagged);
 138
 139         final DOMMountPoint mountPoint = instanceIdentifier.getMountPoint();
 140         final TransactionChainHandler localTransactionChainHandler;
 141         if (mountPoint == null) {
 142             localTransactionChainHandler = this.transactionChainHandler;
 143         } else {
 144             localTransactionChainHandler = transactionChainOfMountPoint(mountPoint);
 145         }
 146
 147         final TransactionVarsWrapper transactionNode = new TransactionVarsWrapper(
 148                 instanceIdentifier, mountPoint, localTransactionChainHandler);
 149         final NormalizedNode<?, ?> node =
 150                 ReadDataTransactionUtil.readData(identifier, parameters.getContent(), transactionNode, withDefa,
 151                         schemaContextRef, uriInfo);
 152         if (identifier.contains(STREAM_PATH) && identifier.contains(STREAM_ACCESS_PATH_PART)
 153                 && identifier.contains(STREAM_LOCATION_PATH_PART)) {
 154             final String value = (String) node.getValue();
 155             final String streamName = value.substring(
 156                     value.indexOf(CREATE_NOTIFICATION_STREAM.toString() + RestconfConstants.SLASH),
 157                     value.length());
 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     @Override
 182     public Response putData(final String identifier, final NormalizedNodeContext payload, final UriInfo uriInfo) {
 183         Preconditions.checkNotNull(payload);
 184
 185         boolean insertUsed = false;
 186         boolean pointUsed = false;
 187         String insert = null;
 188         String point = null;
 189
 190         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
 191             switch (entry.getKey()) {
 192                 case "insert":
 193                     if (!insertUsed) {
 194                         insertUsed = true;
 195                         insert = entry.getValue().iterator().next();
 196                     } else {
 197                         throw new RestconfDocumentedException("Insert parameter can be used only once.",
 198                                 RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 199                     }
 200                     break;
 201                 case "point":
 202                     if (!pointUsed) {
 203                         pointUsed = true;
 204                         point = entry.getValue().iterator().next();
 205                     } else {
 206                         throw new RestconfDocumentedException("Point parameter can be used only once.",
 207                                 RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 208                     }
 209                     break;
 210                 default:
 211                     throw new RestconfDocumentedException("Bad parameter for post: " + entry.getKey(),
 212                             RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.BAD_ELEMENT);
 213             }
 214         }
 215
 216         checkQueryParams(insertUsed, pointUsed, insert);
 217
 218         final InstanceIdentifierContext<? extends SchemaNode> iid = payload
 219                 .getInstanceIdentifierContext();
 220
 221         PutDataTransactionUtil.validInputData(iid.getSchemaNode(), payload);
 222         PutDataTransactionUtil.validTopLevelNodeName(iid.getInstanceIdentifier(), payload);
 223         PutDataTransactionUtil.validateListKeysEqualityInPayloadAndUri(payload);
 224
 225         final DOMMountPoint mountPoint = payload.getInstanceIdentifierContext().getMountPoint();
 226         final TransactionChainHandler localTransactionChainHandler;
 227         final SchemaContextRef ref;
 228         if (mountPoint == null) {
 229             localTransactionChainHandler = this.transactionChainHandler;
 230             ref = new SchemaContextRef(this.schemaContextHandler.get());
 231         } else {
 232             localTransactionChainHandler = transactionChainOfMountPoint(mountPoint);
 233             ref = new SchemaContextRef(mountPoint.getSchemaContext());
 234         }
 235
 236         final TransactionVarsWrapper transactionNode = new TransactionVarsWrapper(
 237                 payload.getInstanceIdentifierContext(), mountPoint, localTransactionChainHandler);
 238         return PutDataTransactionUtil.putData(payload, ref, transactionNode, insert, point);
 239     }
 240
 241     private static void checkQueryParams(final boolean insertUsed, final boolean pointUsed, final String insert) {
 242         if (pointUsed && !insertUsed) {
 243             throw new RestconfDocumentedException("Point parameter can't be used without Insert parameter.");
 244         }
 245         if (pointUsed && (insert.equals("first") || insert.equals("last"))) {
 246             throw new RestconfDocumentedException(
 247                     "Point parameter can be used only with 'after' or 'before' values of Insert parameter.");
 248         }
 249     }
 250
 251     @Override
 252     public Response postData(final String identifier, final NormalizedNodeContext payload, final UriInfo uriInfo) {
 253         return postData(payload, uriInfo);
 254     }
 255
 256     @Override
 257     public Response postData(final NormalizedNodeContext payload, final UriInfo uriInfo) {
 258         Preconditions.checkNotNull(payload);
 259
 260         boolean insertUsed = false;
 261         boolean pointUsed = false;
 262         String insert = null;
 263         String point = null;
 264
 265         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
 266             switch (entry.getKey()) {
 267                 case "insert":
 268                     if (!insertUsed) {
 269                         insertUsed = true;
 270                         insert = entry.getValue().iterator().next();
 271                     } else {
 272                         throw new RestconfDocumentedException("Insert parameter can be used only once.");
 273                     }
 274                     break;
 275                 case "point":
 276                     if (!pointUsed) {
 277                         pointUsed = true;
 278                         point = entry.getValue().iterator().next();
 279                     } else {
 280                         throw new RestconfDocumentedException("Point parameter can be used only once.");
 281                     }
 282                     break;
 283                 default:
 284                     throw new RestconfDocumentedException("Bad parameter for post: " + entry.getKey());
 285             }
 286         }
 287
 288         checkQueryParams(insertUsed, pointUsed, insert);
 289
 290         final DOMMountPoint mountPoint = payload.getInstanceIdentifierContext().getMountPoint();
 291         final TransactionChainHandler localTransactionChainHandler;
 292         final SchemaContextRef ref;
 293         if (mountPoint == null) {
 294             localTransactionChainHandler = this.transactionChainHandler;
 295             ref = new SchemaContextRef(this.schemaContextHandler.get());
 296         } else {
 297             localTransactionChainHandler = transactionChainOfMountPoint(mountPoint);
 298             ref = new SchemaContextRef(mountPoint.getSchemaContext());
 299         }
 300         final TransactionVarsWrapper transactionNode = new TransactionVarsWrapper(
 301                 payload.getInstanceIdentifierContext(), mountPoint, localTransactionChainHandler);
 302         return PostDataTransactionUtil.postData(uriInfo, payload, transactionNode, ref, insert, point);
 303     }
 304
 305     @Override
 306     public Response deleteData(final String identifier) {
 307         final SchemaContextRef schemaContextRef = new SchemaContextRef(this.schemaContextHandler.get());
 308         final InstanceIdentifierContext<?> instanceIdentifier = ParserIdentifier.toInstanceIdentifier(
 309                 identifier, schemaContextRef.get(), Optional.of(this.mountPointServiceHandler.get()));
 310
 311         final DOMMountPoint mountPoint = instanceIdentifier.getMountPoint();
 312         final TransactionChainHandler localTransactionChainHandler;
 313         if (mountPoint == null) {
 314             localTransactionChainHandler = this.transactionChainHandler;
 315         } else {
 316             localTransactionChainHandler = transactionChainOfMountPoint(mountPoint);
 317         }
 318
 319         final TransactionVarsWrapper transactionNode = new TransactionVarsWrapper(instanceIdentifier, mountPoint,
 320                 localTransactionChainHandler);
 321         return DeleteDataTransactionUtil.deleteData(transactionNode);
 322     }
 323
 324     @Override
 325     public PatchStatusContext patchData(final String identifier, final PatchContext context, final UriInfo uriInfo) {
 326         return patchData(context, uriInfo);
 327     }
 328
 329     @Override
 330     public PatchStatusContext patchData(final PatchContext context, final UriInfo uriInfo) {
 331         Preconditions.checkNotNull(context);
 332         final DOMMountPoint mountPoint = context.getInstanceIdentifierContext().getMountPoint();
 333
 334         final TransactionChainHandler localTransactionChainHandler;
 335         final SchemaContextRef ref;
 336         if (mountPoint == null) {
 337             localTransactionChainHandler = this.transactionChainHandler;
 338             ref = new SchemaContextRef(this.schemaContextHandler.get());
 339         } else {
 340             localTransactionChainHandler = transactionChainOfMountPoint(mountPoint);
 341             ref = new SchemaContextRef(mountPoint.getSchemaContext());
 342         }
 343
 344         final TransactionVarsWrapper transactionNode = new TransactionVarsWrapper(
 345                 context.getInstanceIdentifierContext(), mountPoint, localTransactionChainHandler);
 346
 347         return PatchDataTransactionUtil.patchData(context, transactionNode, ref);
 348     }
 349
 350     /**
 351      * Prepare transaction chain to access data of mount point.
 352      * @param mountPoint
 353      *            mount point reference
 354      * @return {@link TransactionChainHandler}
 355      */
 356     private static TransactionChainHandler transactionChainOfMountPoint(@Nonnull final DOMMountPoint mountPoint) {
 357         final Optional<DOMDataBroker> domDataBrokerService = mountPoint.getService(DOMDataBroker.class);
 358         if (domDataBrokerService.isPresent()) {
 359             return new TransactionChainHandler(domDataBrokerService.get());
 360         }
 361
 362         final String errMsg = "DOM data broker service isn't available for mount point " + mountPoint.getIdentifier();
 363         LOG.warn(errMsg);
 364         throw new RestconfDocumentedException(errMsg);
 365     }
 366 }