netconf/mdsal-netconf-notification/src/main/java/org/opendaylight/netconf/mdsal/notification/impl/ops/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.mdsal.notification.impl.ops;
   9
  10 import static com.google.common.base.Verify.verify;
  11
  12 import java.io.IOException;
  13 import java.util.Date;
  14 import java.util.Optional;
  15 import javax.inject.Singleton;
  16 import javax.xml.stream.XMLStreamException;
  17 import javax.xml.transform.dom.DOMResult;
  18 import org.opendaylight.binding.runtime.api.BindingRuntimeContext;
  19 import org.opendaylight.binding.runtime.api.BindingRuntimeGenerator;
  20 import org.opendaylight.binding.runtime.spi.BindingRuntimeHelpers;
  21 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  22 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecFactory;
  23 import org.opendaylight.netconf.api.xml.XmlUtil;
  24 import org.opendaylight.netconf.notifications.NetconfNotification;
  25 import org.opendaylight.netconf.util.NetconfUtil;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netmod.notification.rev080714.Netconf;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfConfigChange;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev160621.YangLibraryChange;
  29 import org.opendaylight.yangtools.yang.binding.Notification;
  30 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  31 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  32 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  33 import org.opendaylight.yangtools.yang.model.parser.api.YangParserFactory;
  34 import org.w3c.dom.Document;
  35
  36 @Singleton
  37 public final class NotificationsTransformUtil {
  38     private final SchemaContext schemaContext;
  39     private final BindingNormalizedNodeSerializer serializer;
  40
  41     public NotificationsTransformUtil(final YangParserFactory parserFactory, final BindingRuntimeGenerator generator,
  42             final BindingDOMCodecFactory codecFactory) {
  43         final BindingRuntimeContext ctx = BindingRuntimeHelpers.createRuntimeContext(parserFactory, generator,
  44             Netconf.class, NetconfConfigChange.class, YangLibraryChange.class);
  45         schemaContext = ctx.getSchemaContext();
  46         verify(schemaContext.getOperations().stream()
  47                 .filter(input -> input.getQName().getLocalName().equals(CreateSubscription.CREATE_SUBSCRIPTION))
  48                 .findFirst()
  49                 .isPresent());
  50         serializer = codecFactory.createBindingDOMCodec(ctx);
  51     }
  52
  53     /**
  54      * Transform base notification for capabilities into NetconfNotification.
  55      */
  56     public NetconfNotification transform(final Notification notification, final SchemaPath path) {
  57         return transform(notification, Optional.empty(), path);
  58     }
  59
  60     public NetconfNotification transform(final Notification notification, final Date eventTime, final SchemaPath path) {
  61         return transform(notification, Optional.ofNullable(eventTime), path);
  62     }
  63
  64     private NetconfNotification transform(final Notification notification, final Optional<Date> eventTime,
  65             final SchemaPath path) {
  66         final ContainerNode containerNode = serializer.toNormalizedNodeNotification(notification);
  67         final DOMResult result = new DOMResult(XmlUtil.newDocument());
  68         try {
  69             NetconfUtil.writeNormalizedNode(containerNode, result, path, schemaContext);
  70         } catch (final XMLStreamException | IOException e) {
  71             throw new IllegalStateException("Unable to serialize " + notification, e);
  72         }
  73         final Document node = (Document) result.getNode();
  74         return eventTime.isPresent() ? new NetconfNotification(node, eventTime.get()) : new NetconfNotification(node);
  75     }
  76 }