apps/netconf-events-mdsal/src/main/java/org/opendaylight/netconf/server/events/mdsal/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 package org.opendaylight.netconf.server.events.mdsal;
   9
  10 import java.util.Collection;
  11 import org.opendaylight.mdsal.binding.api.DataBroker;
  12 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  13 import org.opendaylight.netconf.notifications.NetconfNotificationCollector;
  14 import org.opendaylight.netconf.notifications.YangLibraryPublisherRegistration;
  15 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibrary;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibraryUpdateBuilder;
  17 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  18 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  19 import org.osgi.service.component.annotations.Activate;
  20 import org.osgi.service.component.annotations.Component;
  21 import org.osgi.service.component.annotations.Deactivate;
  22 import org.osgi.service.component.annotations.Reference;
  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 @Component(service = { })
  30 public final class YangLibraryNotificationProducerRFC8525 extends OperationalDatastoreListener<YangLibrary>
  31         implements AutoCloseable {
  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     @Activate
  39     public YangLibraryNotificationProducerRFC8525(
  40             @Reference(target = "(type=netconf-notification-manager)") final NetconfNotificationCollector notifManager,
  41             @Reference final DataBroker dataBroker) {
  42         super(YANG_LIBRARY_INSTANCE_IDENTIFIER);
  43         yangLibraryPublisherRegistration = notifManager.registerYangLibraryPublisher();
  44         yangLibraryChangeListenerRegistration = registerOnChanges(dataBroker);
  45     }
  46
  47     @Deactivate
  48     @Override
  49     public void close() {
  50         if (yangLibraryPublisherRegistration != null) {
  51             yangLibraryPublisherRegistration.close();
  52         }
  53         if (yangLibraryChangeListenerRegistration != null) {
  54             yangLibraryChangeListenerRegistration.close();
  55         }
  56     }
  57
  58     @Override
  59     public void onDataTreeChanged(final Collection<DataTreeModification<YangLibrary>> changes) {
  60         for (DataTreeModification<YangLibrary> change : changes) {
  61             final YangLibrary dataAfter = change.getRootNode().getDataAfter();
  62             if (dataAfter != null) {
  63                 yangLibraryPublisherRegistration.onYangLibraryUpdate(new YangLibraryUpdateBuilder()
  64                     .setContentId(dataAfter.getContentId())
  65                     .build());
  66             }
  67         }
  68     }
  69 }