+/*
+ * 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.datastore.entityownership.selectionstrategy;
+
+import com.google.common.base.Preconditions;
+import java.util.Collection;
+
+/**
+ * The FirstCandidateSelectionStrategy always selects the first viable candidate from the list of candidates
+ */
+public class FirstCandidateSelectionStrategy implements EntityOwnerSelectionStrategy {
+
+ public static final FirstCandidateSelectionStrategy INSTANCE = new FirstCandidateSelectionStrategy();
+
+ @Override
+ public long selectionDelayInMillis() {
+ return 0;
+ }
+
+ @Override
+ public String newOwner(Collection<String> viableCandidates) {
+ Preconditions.checkArgument(viableCandidates.size() > 0, "No viable candidates provided");
+ return viableCandidates.iterator().next();
+ }
+}