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.opendaylight.mdsal.binding.api.DataBroker;
  13 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  14 import org.opendaylight.netconf.notifications.NetconfNotificationCollector;
  15 import org.opendaylight.netconf.notifications.YangLibraryPublisherRegistration;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibrary;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.library.rev190104.YangLibraryUpdateBuilder;
  18 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  20 import org.osgi.service.component.annotations.Activate;
  21 import org.osgi.service.component.annotations.Component;
  22 import org.osgi.service.component.annotations.Deactivate;
  23 import org.osgi.service.component.annotations.Reference;
  24
  25 /**
  26  * Listens on the modules, submodules, datastores, and datastore schemas changes in data store and publishes
  27  * to base netconf notification stream listener a server-specific identifier representing
  28  * the current set of modules, submodules, datastores, and datastore schemas.
  29  */
  30 @Component(service = { })
  31 public final class YangLibraryNotificationProducerRFC8525 extends OperationalDatastoreListener<YangLibrary>
  32         implements AutoCloseable {
  33     private static final InstanceIdentifier<YangLibrary> YANG_LIBRARY_INSTANCE_IDENTIFIER =
  34             InstanceIdentifier.create(YangLibrary.class);
  35
  36     private final ListenerRegistration<?> yangLibraryChangeListenerRegistration;
  37     private final YangLibraryPublisherRegistration yangLibraryPublisherRegistration;
  38
  39     @Activate
  40     public YangLibraryNotificationProducerRFC8525(
  41             @Reference(target = "(type=netconf-notification-manager)") final NetconfNotificationCollector notifManager,
  42             @Reference final DataBroker dataBroker) {
  43         super(YANG_LIBRARY_INSTANCE_IDENTIFIER);
  44         yangLibraryPublisherRegistration = notifManager.registerYangLibraryPublisher();
  45         yangLibraryChangeListenerRegistration = registerOnChanges(dataBroker);
  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 }