netconf/mdsal-netconf-notification/src/main/java/org/opendaylight/netconf/mdsal/notification/impl/YangLibraryNotificationProducerRFC8525.java

   1 /*
   2  * Copyright (c) 2020 Pantheon Technologies s.r.o. 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
   9 package org.opendaylight.netconf.mdsal.notification.impl;
  10
  11 import java.util.Collection;
  12 import org.eclipse.jdt.annotation.NonNull;
  13 import org.opendaylight.mdsal.binding.api.DataBroker;
  14 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  15 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  16 import org.opendaylight.netconf.notifications.NetconfNotificationCollector;
  17 import org.opendaylight.netconf.notifications.YangLibraryPublisherRegistration;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibrary;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibraryUpdate;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibraryUpdateBuilder;
  21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23
  24 /**
  25  * Listens on the modules, submodules, datastores, and datastore schemas changes in data store and publishes
  26  * to base netconf notification stream listener a server-specific identifier representing
  27  * the current set of modules, submodules, datastores, and datastore schemas.
  28  */
  29 public final class YangLibraryNotificationProducerRFC8525 extends OperationalDatastoreListener<YangLibrary>
  30         implements AutoCloseable {
  31
  32     private static final InstanceIdentifier<YangLibrary> YANG_LIBRARY_INSTANCE_IDENTIFIER =
  33             InstanceIdentifier.create(YangLibrary.class);
  34
  35     private final ListenerRegistration<?> yangLibraryChangeListenerRegistration;
  36     private final YangLibraryPublisherRegistration yangLibraryPublisherRegistration;
  37
  38     public YangLibraryNotificationProducerRFC8525(final NetconfNotificationCollector netconfNotificationCollector,
  39                                            final DataBroker dataBroker) {
  40         super(YANG_LIBRARY_INSTANCE_IDENTIFIER);
  41         this.yangLibraryPublisherRegistration = netconfNotificationCollector.registerYangLibraryPublisher();
  42         this.yangLibraryChangeListenerRegistration = registerOnChanges(dataBroker);
  43     }
  44
  45     @Override
  46     public void onDataTreeChanged(@NonNull Collection<DataTreeModification<YangLibrary>> changes) {
  47         for (DataTreeModification<YangLibrary> change : changes) {
  48             final DataObjectModification<YangLibrary> rootNode = change.getRootNode();
  49             final YangLibrary dataAfter = rootNode.getDataAfter();
  50             if (dataAfter != null) {
  51                 final YangLibraryUpdate yangLibraryUpdate = new YangLibraryUpdateBuilder()
  52                         .setContentId(dataAfter.getContentId())
  53                         .build();
  54                 yangLibraryPublisherRegistration.onYangLibraryUpdate(yangLibraryUpdate);
  55             }
  56         }
  57     }
  58
  59     /**
  60      * Invoked by blueprint.
  61      */
  62     @Override
  63     public void close() {
  64         if (yangLibraryPublisherRegistration != null) {
  65             yangLibraryPublisherRegistration.close();
  66         }
  67         if (yangLibraryChangeListenerRegistration != null) {
  68             yangLibraryChangeListenerRegistration.close();
  69         }
  70     }
  71 }