2 * Copyright (c) 2014 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.raft;
11 import com.google.common.base.Stopwatch;
12 import java.util.concurrent.TimeUnit;
13 import java.util.concurrent.atomic.AtomicLongFieldUpdater;
14 import scala.concurrent.duration.FiniteDuration;
16 public class FollowerLogInformationImpl implements FollowerLogInformation {
17 private static final AtomicLongFieldUpdater<FollowerLogInformationImpl> NEXT_INDEX_UPDATER = AtomicLongFieldUpdater.newUpdater(FollowerLogInformationImpl.class, "nextIndex");
18 private static final AtomicLongFieldUpdater<FollowerLogInformationImpl> MATCH_INDEX_UPDATER = AtomicLongFieldUpdater.newUpdater(FollowerLogInformationImpl.class, "matchIndex");
20 private final String id;
22 private final Stopwatch stopwatch = new Stopwatch();
24 private final long followerTimeoutMillis;
26 private volatile long nextIndex;
28 private volatile long matchIndex;
30 public FollowerLogInformationImpl(String id, long nextIndex,
31 long matchIndex, FiniteDuration followerTimeoutDuration) {
33 this.nextIndex = nextIndex;
34 this.matchIndex = matchIndex;
35 this.followerTimeoutMillis = followerTimeoutDuration.toMillis();
39 public long incrNextIndex(){
40 return NEXT_INDEX_UPDATER.incrementAndGet(this);
44 public long decrNextIndex() {
45 return NEXT_INDEX_UPDATER.decrementAndGet(this);
49 public void setNextIndex(long nextIndex) {
50 this.nextIndex = nextIndex;
54 public long incrMatchIndex(){
55 return MATCH_INDEX_UPDATER.incrementAndGet(this);
59 public void setMatchIndex(long matchIndex) {
60 this.matchIndex = matchIndex;
64 public String getId() {
69 public long getNextIndex() {
74 public long getMatchIndex() {
79 public boolean isFollowerActive() {
80 long elapsed = stopwatch.elapsed(TimeUnit.MILLISECONDS);
81 return (stopwatch.isRunning()) && (elapsed <= followerTimeoutMillis);
85 public void markFollowerActive() {
86 if (stopwatch.isRunning()) {
93 public void markFollowerInActive() {
94 if (stopwatch.isRunning()) {