binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/AbstractDOMNotificationListenerAdapter.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  * Copyright (c) 2021 PANTHEON.tech, s.r.o.
   4  *
   5  * This program and the accompanying materials are made available under the
   6  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   7  * and is available at http://www.eclipse.org/legal/epl-v10.html
   8  */
   9 package org.opendaylight.mdsal.binding.dom.adapter;
  10
  11 import static com.google.common.base.Verify.verify;
  12 import static com.google.common.base.Verify.verifyNotNull;
  13 import static java.util.Objects.requireNonNull;
  14
  15 import java.util.Set;
  16 import org.eclipse.jdt.annotation.NonNull;
  17 import org.opendaylight.mdsal.dom.api.DOMEvent;
  18 import org.opendaylight.mdsal.dom.api.DOMNotification;
  19 import org.opendaylight.mdsal.dom.api.DOMNotificationListener;
  20 import org.opendaylight.yangtools.yang.binding.Notification;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
  22
  23 abstract class AbstractDOMNotificationListenerAdapter implements DOMNotificationListener {
  24     private final AdapterContext adapterContext;
  25
  26     AbstractDOMNotificationListenerAdapter(final AdapterContext adapterContext) {
  27         this.adapterContext = requireNonNull(adapterContext);
  28     }
  29
  30     @Override
  31     public final void onNotification(final DOMNotification notification) {
  32         onNotification(notification.getType(), verifyNotNull(deserialize(notification)));
  33     }
  34
  35     abstract void onNotification(@NonNull Absolute domType, @NonNull Notification<?> notification);
  36
  37     abstract Set<Absolute> getSupportedNotifications();
  38
  39     private Notification<?> deserialize(final DOMNotification notification) {
  40         if (notification instanceof LazySerializedNotification) {
  41             // TODO: This is a routed-back notification, for which we may end up losing event time here, but that is
  42             //       okay, for now at least.
  43             return ((LazySerializedNotification) notification).getBindingData();
  44         }
  45
  46         final var serializer = adapterContext.currentSerializer();
  47         final var result = notification instanceof DOMEvent
  48             ? serializer.fromNormalizedNodeNotification(notification.getType(), notification.getBody(),
  49                 ((DOMEvent) notification).getEventInstant())
  50                 : serializer.fromNormalizedNodeNotification(notification.getType(), notification.getBody());
  51         verify(result instanceof Notification, "Unexpected codec result %s", result);
  52         return (Notification<?>) result;
  53     }
  54 }