plugins/netconf-server-mdsal/src/main/java/org/opendaylight/netconf/server/mdsal/notifications/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.mdsal.notifications;
   9
  10 import java.util.Collection;
  11 import org.opendaylight.mdsal.binding.api.DataBroker;
  12 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
  13 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  14 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  15 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  16 import org.opendaylight.netconf.server.api.notifications.NetconfNotificationCollector;
  17 import org.opendaylight.netconf.server.api.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.YangLibraryUpdateBuilder;
  20 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.osgi.service.component.annotations.Activate;
  23 import org.osgi.service.component.annotations.Component;
  24 import org.osgi.service.component.annotations.Deactivate;
  25 import org.osgi.service.component.annotations.Reference;
  26
  27 /**
  28  * Listens on the modules, submodules, datastores, and datastore schemas changes in data store and publishes to base
  29  * NETCONF notification stream listener a server-specific identifier representing the current set of modules,
  30  * submodules, datastores, and datastore schemas.
  31  */
  32 @Component(service = { })
  33 public final class YangLibraryNotificationProducerRFC8525
  34         implements DataTreeChangeListener<YangLibrary>, AutoCloseable {
  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         yangLibraryPublisherRegistration = notifManager.registerYangLibraryPublisher();
  43         yangLibraryChangeListenerRegistration = dataBroker.registerDataTreeChangeListener(
  44             DataTreeIdentifier.create(LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(YangLibrary.class)),
  45             this);
  46     }
  47
  48     @Deactivate
  49     @Override
  50     public void close() {
  51         if (yangLibraryPublisherRegistration != null) {
  52             yangLibraryPublisherRegistration.close();
  53         }
  54         if (yangLibraryChangeListenerRegistration != null) {
  55             yangLibraryChangeListenerRegistration.close();
  56         }
  57     }
  58
  59     @Override
  60     public void onDataTreeChanged(final Collection<DataTreeModification<YangLibrary>> changes) {
  61         for (DataTreeModification<YangLibrary> change : changes) {
  62             final YangLibrary dataAfter = change.getRootNode().getDataAfter();
  63             if (dataAfter != null) {
  64                 yangLibraryPublisherRegistration.onYangLibraryUpdate(new YangLibraryUpdateBuilder()
  65                     .setContentId(dataAfter.getContentId())
  66                     .build());
  67             }
  68         }
  69     }
  70 }