2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.controller.cluster.datastore.entityownership.selectionstrategy;
11 import com.google.common.base.Preconditions;
12 import java.util.Collection;
13 import java.util.Collections;
17 * The FirstCandidateSelectionStrategy always selects the first viable candidate from the list of candidates
19 public class FirstCandidateSelectionStrategy extends AbstractEntityOwnerSelectionStrategy {
21 public static final FirstCandidateSelectionStrategy INSTANCE = new FirstCandidateSelectionStrategy(0L, Collections.emptyMap());
23 public FirstCandidateSelectionStrategy(long selectionDelayInMillis, Map<String, Long> initialStatistics) {
24 super(selectionDelayInMillis, initialStatistics);
28 public String newOwner(String currentOwner, Collection<String> viableCandidates) {
29 Preconditions.checkArgument(viableCandidates.size() > 0, "No viable candidates provided");
30 return viableCandidates.iterator().next();