-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
Heart.java
50 lines (44 loc) · 1.72 KB
/
Heart.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.coreedge.raft.roles;
import java.io.IOException;
import org.neo4j.coreedge.raft.RaftMessages;
import org.neo4j.coreedge.raft.outcome.Outcome;
import org.neo4j.coreedge.raft.state.ReadableRaftState;
import org.neo4j.logging.Log;
class Heart
{
static void beat( ReadableRaftState state, Outcome outcome, RaftMessages.Heartbeat request, Log log ) throws IOException
{
if ( request.leaderTerm() < state.term() )
{
return;
}
outcome.renewElectionTimeout();
outcome.setNextTerm( request.leaderTerm() );
outcome.setLeader( request.from() );
outcome.setLeaderCommit( request.commitIndex() );
if ( !Follower.logHistoryMatches( state, request.commitIndex(), request.commitIndexTerm(), log ) )
{
return;
}
Follower.commitToLogOnUpdate( state, request.commitIndex(), request.commitIndex(), outcome );
}
}