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diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/shardmanager/RegisterForShardAvailabilityChanges.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/shardmanager/RegisterForShardAvailabilityChanges.java
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index 0000000000..de58667dad
--- /dev/null
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/shardmanager/RegisterForShardAvailabilityChanges.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2018 Red Hat, 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.controller.cluster.datastore.shardmanager;
+
+import static java.util.Objects.requireNonNull;
+
+import java.util.function.Consumer;
+
+/**
+ * Local ShardManager message to register a callback to be notified of shard availability changes. The reply to
+ * this message is a {@link org.opendaylight.yangtools.concepts.Registration} instance wrapped in a
+ * {@link akka.actor.Status.Success}.
+ *
+ * @author Thomas Pantelis
+ */
+public class RegisterForShardAvailabilityChanges {
+    private final Consumer<String> callback;
+
+    public RegisterForShardAvailabilityChanges(Consumer<String> callback) {
+        this.callback = requireNonNull(callback);
+    }
+
+    public Consumer<String> getCallback() {
+        return callback;
+    }
+}