Split out sal-distributed-eos

[controller.git] / opendaylight / md-sal / sal-distributed-eos / src / main / java / org / opendaylight / controller / cluster / entityownership / AbstractEntityOwnerChangeListener.java

diff --git a/opendaylight/md-sal/sal-distributed-eos/src/main/java/org/opendaylight/controller/cluster/entityownership/AbstractEntityOwnerChangeListener.java b/opendaylight/md-sal/sal-distributed-eos/src/main/java/org/opendaylight/controller/cluster/entityownership/AbstractEntityOwnerChangeListener.java
new file mode 100644 (file)
index 0000000..f7d1da7
--- /dev/null
+++ b/opendaylight/md-sal/sal-distributed-eos/src/main/java/org/opendaylight/controller/cluster/entityownership/AbstractEntityOwnerChangeListener.java
@@ -0,0 +1,34 @@
+/*
+ * 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.controller.cluster.entityownership;
+
+import static org.opendaylight.controller.cluster.entityownership.EntityOwnersModel.ENTITY_OWNERS_PATH;
+import static org.opendaylight.controller.cluster.entityownership.EntityOwnersModel.ENTITY_OWNER_QNAME;
+import static org.opendaylight.controller.cluster.entityownership.EntityOwnersModel.ENTITY_QNAME;
+
+import java.util.Optional;
+import org.opendaylight.controller.cluster.datastore.ShardDataTree;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.clustering.entity.owners.rev150804.entity.owners.EntityType;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
+
+public abstract class AbstractEntityOwnerChangeListener implements DOMDataTreeChangeListener {
+    private static final YangInstanceIdentifier EOS_PATH = YangInstanceIdentifier.builder(ENTITY_OWNERS_PATH)
+            .node(EntityType.QNAME).node(EntityType.QNAME).node(ENTITY_QNAME).node(ENTITY_QNAME)
+            .node(ENTITY_OWNER_QNAME).build();
+
+    void init(final ShardDataTree shardDataTree) {
+        shardDataTree.registerTreeChangeListener(EOS_PATH, this, Optional.empty(), noop -> { /* NOOP */ });
+    }
+
+    protected static String extractOwner(final LeafNode<?> ownerLeaf) {
+        return ownerLeaf.getValue().toString();
+    }
+
+}