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
8 package org.opendaylight.controller.cluster.raft;
10 import java.util.concurrent.TimeUnit;
11 import scala.concurrent.duration.FiniteDuration;
14 * Default implementation of the ConfigParams
16 * If no implementation is provided for ConfigParams, then this will be used.
18 public class DefaultConfigParamsImpl implements ConfigParams {
20 private static final int SNAPSHOT_BATCH_COUNT = 20000;
22 private static final int JOURNAL_RECOVERY_LOG_BATCH_SIZE = 1000;
25 * The maximum election time variance
27 private static final int ELECTION_TIME_MAX_VARIANCE = 100;
29 private static final int SNAPSHOT_CHUNK_SIZE = 2048 * 1000; //2MB
33 * The interval at which a heart beat message will be sent to the remote
36 * Since this is set to 100 milliseconds the Election timeout should be
37 * at least 200 milliseconds
39 public static final FiniteDuration HEART_BEAT_INTERVAL =
40 new FiniteDuration(100, TimeUnit.MILLISECONDS);
43 private FiniteDuration heartBeatInterval = HEART_BEAT_INTERVAL;
44 private long snapshotBatchCount = SNAPSHOT_BATCH_COUNT;
45 private int journalRecoveryLogBatchSize = JOURNAL_RECOVERY_LOG_BATCH_SIZE;
46 private FiniteDuration isolatedLeaderCheckInterval =
47 new FiniteDuration(HEART_BEAT_INTERVAL.length() * 1000, HEART_BEAT_INTERVAL.unit());
49 // 12 is just an arbitrary percentage. This is the amount of the total memory that a raft actor's
50 // in-memory journal can use before it needs to snapshot
51 private int snapshotDataThresholdPercentage = 12;
53 public void setHeartBeatInterval(FiniteDuration heartBeatInterval) {
54 this.heartBeatInterval = heartBeatInterval;
57 public void setSnapshotBatchCount(long snapshotBatchCount) {
58 this.snapshotBatchCount = snapshotBatchCount;
61 public void setSnapshotDataThresholdPercentage(int snapshotDataThresholdPercentage){
62 this.snapshotDataThresholdPercentage = snapshotDataThresholdPercentage;
65 public void setJournalRecoveryLogBatchSize(int journalRecoveryLogBatchSize) {
66 this.journalRecoveryLogBatchSize = journalRecoveryLogBatchSize;
69 public void setIsolatedLeaderCheckInterval(FiniteDuration isolatedLeaderCheckInterval) {
70 this.isolatedLeaderCheckInterval = isolatedLeaderCheckInterval;
74 public long getSnapshotBatchCount() {
75 return snapshotBatchCount;
79 public int getSnapshotDataThresholdPercentage() {
80 return snapshotDataThresholdPercentage;
85 public FiniteDuration getHeartBeatInterval() {
86 return heartBeatInterval;
90 public FiniteDuration getElectionTimeOutInterval() {
91 // returns 2 times the heart beat interval
92 return getHeartBeatInterval().$times(2);
96 public int getElectionTimeVariance() {
97 return ELECTION_TIME_MAX_VARIANCE;
101 public int getSnapshotChunkSize() {
102 return SNAPSHOT_CHUNK_SIZE;
106 public int getJournalRecoveryLogBatchSize() {
107 return journalRecoveryLogBatchSize;
111 public FiniteDuration getIsolatedCheckInterval() {
112 return isolatedLeaderCheckInterval;