netconf/sal-netconf-connector/src/main/java/org/opendaylight/netconf/sal/connect/netconf/util/NetconfMessageTransformUtil.java

   1 /*
   2  * Copyright (c) 2014 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.netconf.sal.connect.netconf.util;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.ImmutableList;
  13 import com.google.common.collect.ImmutableMap;
  14 import java.io.IOException;
  15 import java.net.URI;
  16 import java.time.format.DateTimeParseException;
  17 import java.util.AbstractMap;
  18 import java.util.Collection;
  19 import java.util.Collections;
  20 import java.util.Date;
  21 import java.util.List;
  22 import java.util.Map;
  23 import java.util.Map.Entry;
  24 import javax.xml.stream.XMLStreamException;
  25 import javax.xml.stream.XMLStreamWriter;
  26 import javax.xml.transform.dom.DOMResult;
  27 import javax.xml.transform.dom.DOMSource;
  28 import org.opendaylight.controller.config.util.xml.DocumentedException;
  29 import org.opendaylight.controller.config.util.xml.XmlElement;
  30 import org.opendaylight.controller.config.util.xml.XmlUtil;
  31 import org.opendaylight.netconf.api.NetconfDocumentedException;
  32 import org.opendaylight.netconf.api.NetconfMessage;
  33 import org.opendaylight.netconf.notifications.NetconfNotification;
  34 import org.opendaylight.netconf.sal.connect.util.MessageCounter;
  35 import org.opendaylight.netconf.util.NetconfUtil;
  36 import org.opendaylight.netconf.util.messages.NetconfMessageUtil;
  37 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.edit.config.input.EditContent;
  38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.CreateSubscriptionInput;
  39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.NetconfState;
  40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfCapabilityChange;
  41 import org.opendaylight.yangtools.yang.common.QName;
  42 import org.opendaylight.yangtools.yang.common.RpcError;
  43 import org.opendaylight.yangtools.yang.common.RpcError.ErrorSeverity;
  44 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  45 import org.opendaylight.yangtools.yang.data.api.ModifyAction;
  46 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  47 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  48 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  49 import org.opendaylight.yangtools.yang.data.api.schema.AnyXmlNode;
  50 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  51 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  52 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  53 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  54 import org.opendaylight.yangtools.yang.data.impl.codec.xml.XMLStreamNormalizedNodeStreamWriter;
  55 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  56 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  57 import org.opendaylight.yangtools.yang.data.impl.schema.SchemaOrderedNormalizedNodeWriter;
  58 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeAttrBuilder;
  59 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  60 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
  61 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  62 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  63 import org.slf4j.Logger;
  64 import org.slf4j.LoggerFactory;
  65 import org.w3c.dom.Document;
  66 import org.w3c.dom.Element;
  67
  68 public class NetconfMessageTransformUtil {
  69
  70     private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageTransformUtil.class);
  71
  72     public static final String MESSAGE_ID_PREFIX = "m";
  73     public static final String MESSAGE_ID_ATTR = "message-id";
  74
  75     public static final QName CREATE_SUBSCRIPTION_RPC_QNAME =
  76             QName.create(CreateSubscriptionInput.QNAME, "create-subscription").intern();
  77     private static final String SUBTREE = "subtree";
  78
  79     // Blank document used for creation of new DOM nodes
  80     private static final Document BLANK_DOCUMENT = XmlUtil.newDocument();
  81     public static final String EVENT_TIME = "eventTime";
  82
  83     private NetconfMessageTransformUtil() {}
  84
  85     public static final QName IETF_NETCONF_MONITORING =
  86             QName.create(NetconfState.QNAME, "ietf-netconf-monitoring").intern();
  87     public static final QName GET_DATA_QNAME = QName.create(IETF_NETCONF_MONITORING, "data").intern();
  88     public static final QName GET_SCHEMA_QNAME = QName.create(IETF_NETCONF_MONITORING, "get-schema").intern();
  89     public static final QName IETF_NETCONF_MONITORING_SCHEMA_FORMAT =
  90             QName.create(IETF_NETCONF_MONITORING, "format").intern();
  91     public static final QName IETF_NETCONF_MONITORING_SCHEMA_LOCATION =
  92             QName.create(IETF_NETCONF_MONITORING, "location").intern();
  93     public static final QName IETF_NETCONF_MONITORING_SCHEMA_IDENTIFIER =
  94             QName.create(IETF_NETCONF_MONITORING, "identifier").intern();
  95     public static final QName IETF_NETCONF_MONITORING_SCHEMA_VERSION =
  96             QName.create(IETF_NETCONF_MONITORING, "version").intern();
  97     public static final QName IETF_NETCONF_MONITORING_SCHEMA_NAMESPACE =
  98             QName.create(IETF_NETCONF_MONITORING, "namespace").intern();
  99
 100     public static final QName IETF_NETCONF_NOTIFICATIONS =
 101             QName.create(NetconfCapabilityChange.QNAME, "ietf-netconf-notifications").intern();
 102
 103     public static final QName NETCONF_QNAME =
 104             QName.create("urn:ietf:params:xml:ns:netconf:base:1.0", "2011-06-01", "netconf").intern();
 105     public static final URI NETCONF_URI = NETCONF_QNAME.getNamespace();
 106
 107     public static final QName NETCONF_DATA_QNAME = QName.create(NETCONF_QNAME, "data").intern();
 108     public static final QName NETCONF_RPC_REPLY_QNAME = QName.create(NETCONF_QNAME, "rpc-reply").intern();
 109     public static final QName NETCONF_OK_QNAME = QName.create(NETCONF_QNAME, "ok").intern();
 110     public static final QName NETCONF_ERROR_OPTION_QNAME = QName.create(NETCONF_QNAME, "error-option").intern();
 111     public static final QName NETCONF_RUNNING_QNAME = QName.create(NETCONF_QNAME, "running").intern();
 112     public static final QName NETCONF_SOURCE_QNAME = QName.create(NETCONF_QNAME, "source").intern();
 113     public static final QName NETCONF_CANDIDATE_QNAME = QName.create(NETCONF_QNAME, "candidate").intern();
 114     public static final QName NETCONF_TARGET_QNAME = QName.create(NETCONF_QNAME, "target").intern();
 115     public static final QName NETCONF_CONFIG_QNAME = QName.create(NETCONF_QNAME, "config").intern();
 116     public static final QName NETCONF_COMMIT_QNAME = QName.create(NETCONF_QNAME, "commit").intern();
 117     public static final QName NETCONF_VALIDATE_QNAME = QName.create(NETCONF_QNAME, "validate").intern();
 118     public static final QName NETCONF_COPY_CONFIG_QNAME = QName.create(NETCONF_QNAME, "copy-config").intern();
 119     public static final QName NETCONF_OPERATION_QNAME = QName.create(NETCONF_QNAME, "operation").intern();
 120     public static final QName NETCONF_DEFAULT_OPERATION_QNAME =
 121             QName.create(NETCONF_OPERATION_QNAME, "default-operation").intern();
 122     public static final QName NETCONF_EDIT_CONFIG_QNAME = QName.create(NETCONF_QNAME, "edit-config").intern();
 123     public static final QName NETCONF_GET_CONFIG_QNAME = QName.create(NETCONF_QNAME, "get-config");
 124     public static final QName NETCONF_DISCARD_CHANGES_QNAME = QName.create(NETCONF_QNAME, "discard-changes");
 125     public static final QName NETCONF_TYPE_QNAME = QName.create(NETCONF_QNAME, "type").intern();
 126     public static final QName NETCONF_FILTER_QNAME = QName.create(NETCONF_QNAME, "filter").intern();
 127     public static final QName NETCONF_GET_QNAME = QName.create(NETCONF_QNAME, "get").intern();
 128     public static final QName NETCONF_RPC_QNAME = QName.create(NETCONF_QNAME, "rpc").intern();
 129
 130     public static final URI NETCONF_ROLLBACK_ON_ERROR_URI = URI
 131             .create("urn:ietf:params:netconf:capability:rollback-on-error:1.0");
 132     public static final String ROLLBACK_ON_ERROR_OPTION = "rollback-on-error";
 133
 134     public static final URI NETCONF_CANDIDATE_URI = URI
 135             .create("urn:ietf:params:netconf:capability:candidate:1.0");
 136
 137     public static final URI NETCONF_NOTIFICATONS_URI = URI
 138             .create("urn:ietf:params:netconf:capability:notification:1.0");
 139
 140     public static final URI NETCONF_RUNNING_WRITABLE_URI = URI
 141             .create("urn:ietf:params:netconf:capability:writable-running:1.0");
 142
 143     public static final QName NETCONF_LOCK_QNAME = QName.create(NETCONF_QNAME, "lock").intern();
 144     public static final QName NETCONF_UNLOCK_QNAME = QName.create(NETCONF_QNAME, "unlock").intern();
 145
 146     // Discard changes message
 147     public static final ContainerNode DISCARD_CHANGES_RPC_CONTENT =
 148             Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(NETCONF_DISCARD_CHANGES_QNAME)).build();
 149
 150     // Commit changes message
 151     public static final ContainerNode COMMIT_RPC_CONTENT =
 152             Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(NETCONF_COMMIT_QNAME)).build();
 153
 154     // Get message
 155     public static final ContainerNode GET_RPC_CONTENT =
 156             Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(NETCONF_GET_QNAME)).build();
 157
 158     // Create-subscription changes message
 159     public static final ContainerNode CREATE_SUBSCRIPTION_RPC_CONTENT =
 160             Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(CREATE_SUBSCRIPTION_RPC_QNAME)).build();
 161
 162     public static final DataContainerChild<?, ?> EMPTY_FILTER;
 163
 164     static {
 165         final NormalizedNodeAttrBuilder<NodeIdentifier, DOMSource, AnyXmlNode> anyXmlBuilder =
 166                 Builders.anyXmlBuilder().withNodeIdentifier(toId(NETCONF_FILTER_QNAME));
 167         anyXmlBuilder.withAttributes(Collections.singletonMap(NETCONF_TYPE_QNAME, SUBTREE));
 168
 169         final Element element = XmlUtil.createElement(BLANK_DOCUMENT, NETCONF_FILTER_QNAME.getLocalName(),
 170                 Optional.of(NETCONF_FILTER_QNAME.getNamespace().toString()));
 171         element.setAttributeNS(NETCONF_FILTER_QNAME.getNamespace().toString(),
 172                 NETCONF_TYPE_QNAME.getLocalName(), "subtree");
 173
 174         anyXmlBuilder.withValue(new DOMSource(element));
 175
 176         EMPTY_FILTER = anyXmlBuilder.build();
 177     }
 178
 179     public static DataContainerChild<?, ?> toFilterStructure(final YangInstanceIdentifier identifier,
 180                                                              final SchemaContext ctx) {
 181         final NormalizedNodeAttrBuilder<NodeIdentifier, DOMSource, AnyXmlNode> anyXmlBuilder =
 182                 Builders.anyXmlBuilder().withNodeIdentifier(toId(NETCONF_FILTER_QNAME));
 183         anyXmlBuilder.withAttributes(Collections.singletonMap(NETCONF_TYPE_QNAME, SUBTREE));
 184
 185         final NormalizedNode<?, ?> filterContent = ImmutableNodes.fromInstanceId(ctx, identifier);
 186
 187         final Element element = XmlUtil.createElement(BLANK_DOCUMENT, NETCONF_FILTER_QNAME.getLocalName(),
 188                 Optional.of(NETCONF_FILTER_QNAME.getNamespace().toString()));
 189         element.setAttributeNS(NETCONF_FILTER_QNAME.getNamespace().toString(), NETCONF_TYPE_QNAME.getLocalName(),
 190                 "subtree");
 191
 192         try {
 193             NetconfUtil.writeNormalizedNode(filterContent, new DOMResult(element), SchemaPath.ROOT, ctx);
 194         } catch (IOException | XMLStreamException e) {
 195             throw new IllegalStateException("Unable to serialize filter element for path " + identifier, e);
 196         }
 197         anyXmlBuilder.withValue(new DOMSource(element));
 198
 199         return anyXmlBuilder.build();
 200     }
 201
 202     public static void checkValidReply(final NetconfMessage input, final NetconfMessage output)
 203             throws NetconfDocumentedException {
 204         final String inputMsgId = input.getDocument().getDocumentElement().getAttribute(MESSAGE_ID_ATTR);
 205         final String outputMsgId = output.getDocument().getDocumentElement().getAttribute(MESSAGE_ID_ATTR);
 206
 207         if (inputMsgId.equals(outputMsgId) == false) {
 208             final Map<String, String> errorInfo = ImmutableMap.<String, String>builder()
 209                     .put("actual-message-id", outputMsgId)
 210                     .put("expected-message-id", inputMsgId)
 211                     .build();
 212
 213             throw new NetconfDocumentedException("Response message contained unknown \"message-id\"",
 214                     null, NetconfDocumentedException.ErrorType.PROTOCOL,
 215                     NetconfDocumentedException.ErrorTag.BAD_ATTRIBUTE,
 216                     NetconfDocumentedException.ErrorSeverity.ERROR, errorInfo);
 217         }
 218     }
 219
 220     public static void checkSuccessReply(final NetconfMessage output) throws NetconfDocumentedException {
 221         if (NetconfMessageUtil.isErrorMessage(output)) {
 222             throw NetconfDocumentedException.fromXMLDocument(output.getDocument());
 223         }
 224     }
 225
 226     public static RpcError toRpcError(final NetconfDocumentedException ex) {
 227         final StringBuilder infoBuilder = new StringBuilder();
 228         final Map<String, String> errorInfo = ex.getErrorInfo();
 229         if (errorInfo != null) {
 230             for (final Entry<String, String> e : errorInfo.entrySet()) {
 231                 infoBuilder.append('<').append(e.getKey()).append('>').append(e.getValue())
 232                         .append("</").append(e.getKey()).append('>');
 233
 234             }
 235         }
 236
 237         final ErrorSeverity severity = toRpcErrorSeverity(ex.getErrorSeverity());
 238         return severity == ErrorSeverity.ERROR
 239                 ? RpcResultBuilder.newError(toRpcErrorType(ex.getErrorType()), ex.getErrorTag().getTagValue(),
 240                         ex.getLocalizedMessage(), null, infoBuilder.toString(), ex.getCause())
 241                 : RpcResultBuilder.newWarning(
 242                         toRpcErrorType(ex.getErrorType()), ex.getErrorTag().getTagValue(),
 243                         ex.getLocalizedMessage(), null, infoBuilder.toString(), ex.getCause());
 244     }
 245
 246     private static ErrorSeverity toRpcErrorSeverity(final NetconfDocumentedException.ErrorSeverity severity) {
 247         switch (severity) {
 248             case WARNING:
 249                 return RpcError.ErrorSeverity.WARNING;
 250             default:
 251                 return RpcError.ErrorSeverity.ERROR;
 252         }
 253     }
 254
 255     private static RpcError.ErrorType toRpcErrorType(final NetconfDocumentedException.ErrorType type) {
 256         switch (type) {
 257             case PROTOCOL:
 258                 return RpcError.ErrorType.PROTOCOL;
 259             case RPC:
 260                 return RpcError.ErrorType.RPC;
 261             case TRANSPORT:
 262                 return RpcError.ErrorType.TRANSPORT;
 263             default:
 264                 return RpcError.ErrorType.APPLICATION;
 265         }
 266     }
 267
 268     public static NodeIdentifier toId(final PathArgument qname) {
 269         return toId(qname.getNodeType());
 270     }
 271
 272     public static NodeIdentifier toId(final QName nodeType) {
 273         return new NodeIdentifier(nodeType);
 274     }
 275
 276     public static Element getDataSubtree(final Document doc) {
 277         return (Element) doc.getElementsByTagNameNS(NETCONF_URI.toString(), "data").item(0);
 278     }
 279
 280     public static boolean isDataRetrievalOperation(final QName rpc) {
 281         return NETCONF_URI.equals(rpc.getNamespace())
 282                 && (NETCONF_GET_CONFIG_QNAME.getLocalName().equals(rpc.getLocalName())
 283                 || NETCONF_GET_QNAME.getLocalName().equals(rpc.getLocalName()));
 284     }
 285
 286     public static ContainerSchemaNode createSchemaForDataRead(final SchemaContext schemaContext) {
 287         return new NodeContainerProxy(NETCONF_DATA_QNAME, schemaContext.getChildNodes());
 288     }
 289
 290     public static ContainerSchemaNode createSchemaForNotification(final NotificationDefinition next) {
 291         return new NodeContainerProxy(next.getQName(), next.getChildNodes(), next.getAvailableAugmentations());
 292     }
 293
 294     public static ContainerNode wrap(final QName name, final DataContainerChild<?, ?>... node) {
 295         return Builders.containerBuilder().withNodeIdentifier(toId(name)).withValue(ImmutableList.copyOf(node)).build();
 296     }
 297
 298     public static AnyXmlNode createEditConfigAnyxml(
 299             final SchemaContext ctx, final YangInstanceIdentifier dataPath, final Optional<ModifyAction> operation,
 300             final Optional<NormalizedNode<?, ?>> lastChildOverride) {
 301         final NormalizedNode<?, ?> configContent;
 302
 303         if (dataPath.isEmpty()) {
 304             Preconditions.checkArgument(lastChildOverride.isPresent(),
 305                     "Data has to be present when creating structure for top level element");
 306             Preconditions.checkArgument(lastChildOverride.get() instanceof DataContainerChild<?, ?>,
 307                     "Data has to be either container or a list node when creating structure for top level element, "
 308                             + "but was: %s", lastChildOverride.get());
 309             configContent = lastChildOverride.get();
 310         } else {
 311             final Entry<QName, ModifyAction> modifyOperation = operation.isPresent()
 312                     ? new AbstractMap.SimpleEntry<>(NETCONF_OPERATION_QNAME, operation.get()) : null;
 313             configContent = ImmutableNodes
 314                     .fromInstanceId(ctx, dataPath, lastChildOverride, Optional.fromNullable(modifyOperation));
 315         }
 316
 317         final Element element = XmlUtil.createElement(BLANK_DOCUMENT, NETCONF_CONFIG_QNAME.getLocalName(),
 318                 Optional.of(NETCONF_CONFIG_QNAME.getNamespace().toString()));
 319         try {
 320             NetconfUtil.writeNormalizedNode(configContent, new DOMResult(element), SchemaPath.ROOT, ctx);
 321         } catch (IOException | XMLStreamException e) {
 322             throw new IllegalStateException("Unable to serialize edit config content element for path " + dataPath, e);
 323         }
 324         final DOMSource value = new DOMSource(element);
 325
 326         return Builders.anyXmlBuilder().withNodeIdentifier(toId(NETCONF_CONFIG_QNAME)).withValue(value).build();
 327     }
 328
 329     public static DataContainerChild<?, ?> createEditConfigStructure(
 330             final SchemaContext ctx, final YangInstanceIdentifier dataPath, final Optional<ModifyAction> operation,
 331             final Optional<NormalizedNode<?, ?>> lastChildOverride) {
 332         return Builders.choiceBuilder().withNodeIdentifier(toId(EditContent.QNAME))
 333                 .withChild(createEditConfigAnyxml(ctx, dataPath, operation, lastChildOverride)).build();
 334     }
 335
 336     public static SchemaPath toPath(final QName rpc) {
 337         return SchemaPath.create(true, rpc);
 338     }
 339
 340     public static Map.Entry<Date, XmlElement> stripNotification(final NetconfMessage message) {
 341         final XmlElement xmlElement = XmlElement.fromDomDocument(message.getDocument());
 342         final List<XmlElement> childElements = xmlElement.getChildElements();
 343         Preconditions.checkArgument(childElements.size() == 2, "Unable to parse notification %s, unexpected format."
 344                 + "\nExpected 2 childElements, actual childElements size is %s", message, childElements.size());
 345
 346         final XmlElement eventTimeElement;
 347         final XmlElement notificationElement;
 348
 349         if (childElements.get(0).getName().equals(EVENT_TIME)) {
 350             eventTimeElement = childElements.get(0);
 351             notificationElement = childElements.get(1);
 352         } else if (childElements.get(1).getName().equals(EVENT_TIME)) {
 353             eventTimeElement = childElements.get(1);
 354             notificationElement = childElements.get(0);
 355         } else {
 356             throw new IllegalArgumentException("Notification payload does not contain " + EVENT_TIME + " " + message);
 357         }
 358
 359         try {
 360             return new AbstractMap.SimpleEntry<>(
 361                     NetconfNotification.RFC3339_DATE_PARSER.apply(eventTimeElement.getTextContent()),
 362                     notificationElement);
 363         } catch (final DocumentedException e) {
 364             throw new IllegalArgumentException("Notification payload does not contain " + EVENT_TIME + " " + message);
 365         } catch (final DateTimeParseException e) {
 366             LOG.warn("Unable to parse event time from {}. Setting time to {}", eventTimeElement,
 367                     NetconfNotification.UNKNOWN_EVENT_TIME, e);
 368             return new AbstractMap.SimpleEntry<>(NetconfNotification.UNKNOWN_EVENT_TIME, notificationElement);
 369         }
 370     }
 371
 372     public static DOMResult prepareDomResultForRpcRequest(final QName rpcQName, final MessageCounter counter) {
 373         final Document document = XmlUtil.newDocument();
 374         final Element rpcNS =
 375                 document.createElementNS(NETCONF_RPC_QNAME.getNamespace().toString(), NETCONF_RPC_QNAME.getLocalName());
 376         // set msg id
 377         rpcNS.setAttribute(MESSAGE_ID_ATTR, counter.getNewMessageId(MESSAGE_ID_PREFIX));
 378         final Element elementNS = document.createElementNS(rpcQName.getNamespace().toString(), rpcQName.getLocalName());
 379         rpcNS.appendChild(elementNS);
 380         document.appendChild(rpcNS);
 381         return new DOMResult(elementNS);
 382     }
 383
 384     @SuppressWarnings("checkstyle:IllegalCatch")
 385     public static void writeNormalizedRpc(final ContainerNode normalized, final DOMResult result,
 386                                           final SchemaPath schemaPath,
 387                                           final SchemaContext baseNetconfCtx) throws IOException, XMLStreamException {
 388         final XMLStreamWriter writer = NetconfUtil.XML_FACTORY.createXMLStreamWriter(result);
 389         try {
 390             try (NormalizedNodeStreamWriter normalizedNodeStreamWriter =
 391                     XMLStreamNormalizedNodeStreamWriter.create(writer, baseNetconfCtx, schemaPath)) {
 392                 try (SchemaOrderedNormalizedNodeWriter normalizedNodeWriter =
 393                         new SchemaOrderedNormalizedNodeWriter(normalizedNodeStreamWriter, baseNetconfCtx, schemaPath)) {
 394                     final Collection<DataContainerChild<?, ?>> value = normalized.getValue();
 395                     normalizedNodeWriter.write(value);
 396                     normalizedNodeWriter.flush();
 397                 }
 398             }
 399         } finally {
 400             try {
 401                 writer.close();
 402             } catch (final Exception e) {
 403                 LOG.warn("Unable to close resource properly", e);
 404             }
 405         }
 406     }
 407 }