Add InstanceNotification(Publish)ServiceAdapter

[mdsal.git] / binding / mdsal-binding-dom-adapter / src / main / java / org / opendaylight / mdsal / binding / dom / adapter / AbstractInstanceNotificationListenerAdapter.java

diff --git a/binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/AbstractInstanceNotificationListenerAdapter.java b/binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/AbstractInstanceNotificationListenerAdapter.java
new file mode 100644 (file)
index 0000000..ddd7aae
--- /dev/null
+++ b/binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/AbstractInstanceNotificationListenerAdapter.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.mdsal.binding.dom.adapter;
+
+import static java.util.Objects.requireNonNull;
+
+import java.util.concurrent.Executor;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
+import org.opendaylight.mdsal.dom.api.DOMEvent;
+import org.opendaylight.mdsal.dom.api.DOMInstanceNotificationListener;
+import org.opendaylight.mdsal.dom.api.DOMNotification;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.binding.InstanceNotification;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+abstract class AbstractInstanceNotificationListenerAdapter<P extends DataObject, N extends InstanceNotification<N, P>,
+        L> implements DOMInstanceNotificationListener {
+    private static final Logger LOG = LoggerFactory.getLogger(AbstractInstanceNotificationListenerAdapter.class);
+
+    private final @NonNull AdapterContext adapterContext;
+    private final @NonNull Class<N> notificationClass;
+    private final @NonNull Executor executor;
+    private final @NonNull L delegate;
+
+    AbstractInstanceNotificationListenerAdapter(final AdapterContext adapterContext, final Class<N> nofiticationClass,
+            final L delegate, final Executor executor) {
+        this.adapterContext = requireNonNull(adapterContext);
+        this.notificationClass = requireNonNull(nofiticationClass);
+        this.delegate = requireNonNull(delegate);
+        this.executor = requireNonNull(executor);
+    }
+
+    @Override
+    public final void onNotification(final DOMDataTreeIdentifier path, final DOMNotification notification) {
+        final var serializer = adapterContext.currentSerializer();
+        final var bindingNotification = notification instanceof DOMEvent
+            ? serializer.fromNormalizedNodeNotification(notification.getType(), notification.getBody(),
+                ((DOMEvent) notification).getEventInstant())
+                : serializer.fromNormalizedNodeNotification(notification.getType(), notification.getBody());
+
+        final N castNotification;
+        try {
+            castNotification = notificationClass.cast(bindingNotification);
+        } catch (ClassCastException e) {
+            LOG.warn("Mismatched notification type {}, not notifying listener", notification.getType(), e);
+            return;
+        }
+
+        final var bindingPath = serializer.fromYangInstanceIdentifier(path.getRootIdentifier());
+        executor.execute(() -> onNotification(delegate, bindingPath, castNotification));
+    }
+
+    abstract void onNotification(@NonNull L delegate, @NonNull InstanceIdentifier<?> path, @NonNull N notification);
+}