plugins/netconf-server-mdsal/src/main/java/org/opendaylight/netconf/server/mdsal/notifications/NotificationsTransformUtil.java

   1 /*
   2  * Copyright (c) 2015 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.server.mdsal.notifications;
   9
  10 import static com.google.common.base.Verify.verify;
  11
  12 import java.io.IOException;
  13 import javax.xml.stream.XMLStreamException;
  14 import javax.xml.transform.dom.DOMResult;
  15 import org.eclipse.jdt.annotation.NonNull;
  16 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  17 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecFactory;
  18 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeGenerator;
  19 import org.opendaylight.mdsal.binding.runtime.spi.BindingRuntimeHelpers;
  20 import org.opendaylight.netconf.api.messages.NotificationMessage;
  21 import org.opendaylight.netconf.api.xml.XmlUtil;
  22 import org.opendaylight.netconf.common.mdsal.NormalizedDataUtil;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netmod.notification.rev080714.Netconf;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfConfigChange;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibraryChange;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibraryUpdate;
  27 import org.opendaylight.yangtools.yang.binding.EventInstantAware;
  28 import org.opendaylight.yangtools.yang.binding.Notification;
  29 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  30 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
  31 import org.opendaylight.yangtools.yang.parser.api.YangParserException;
  32 import org.opendaylight.yangtools.yang.parser.api.YangParserFactory;
  33 import org.w3c.dom.Document;
  34
  35 final class NotificationsTransformUtil {
  36     private final EffectiveModelContext modelContext;
  37     private final BindingNormalizedNodeSerializer serializer;
  38
  39     NotificationsTransformUtil(final YangParserFactory parserFactory, final BindingRuntimeGenerator generator,
  40             final BindingDOMCodecFactory codecFactory) throws YangParserException {
  41         final var ctx = BindingRuntimeHelpers.createRuntimeContext(parserFactory, generator,
  42             Netconf.class, NetconfConfigChange.class, YangLibraryChange.class, YangLibraryUpdate.class);
  43         modelContext = ctx.modelContext();
  44         verify(modelContext.getOperations().stream()
  45                 .filter(input -> input.getQName().getLocalName().equals(CreateSubscription.CREATE_SUBSCRIPTION))
  46                 .findFirst()
  47                 .isPresent());
  48         serializer = codecFactory.createBindingDOMCodec(ctx);
  49     }
  50
  51     /**
  52      * Transform base notification for capabilities into NetconfNotification.
  53      */
  54     public @NonNull NotificationMessage transform(final Notification<?> notification, final Absolute path) {
  55         final var eventTime = notification instanceof EventInstantAware aware ? aware.eventInstant() : null;
  56         final var containerNode = serializer.toNormalizedNodeNotification(notification);
  57         final var result = new DOMResult(XmlUtil.newDocument());
  58         try {
  59             NormalizedDataUtil.writeNormalizedNode(containerNode, result, modelContext, path);
  60         } catch (final XMLStreamException | IOException e) {
  61             throw new IllegalStateException("Unable to serialize " + notification, e);
  62         }
  63
  64         final var node = (Document) result.getNode();
  65         return eventTime != null ? NotificationMessage.ofNotificationContent(node, eventTime) :
  66             NotificationMessage.ofNotificationContent(node);
  67     }
  68 }