An implementation of the Raft Concensus Protocol.
Barge is still a work in progress, two major missing features are:
- Log Compaction (alpha2)
- Dynamic Membership (alpha2)
Barge is currently at 0.1.0-alpha1. I intend to release an alpha2 when the library is feature complete from the standpoint of the paper. Interest and involvement will determine how the library progresses past the alpha stage.
<dependency>
<groupId>org.robotninjas.barge</groupId>
<artifactId>barge-core</artifactId>
<version>0.1.0-alpha1</version>
</dependency>public class Test implements StateMachine {
@Override
public void applyOperation(@Nonnull ByteBuffer entry) {
System.out.println(entry.getLong());
}
public static void main(String... args) throws Exception {
ClusterConfig config = ClusterConfig.from(
Replica.fromString("localhost:10000"), // local
Replica.fromString("localhost:10001"), // remote
Replica.fromString("localhost:10002") // remote
);
File logDir = new File(args[0]);
logDir.mkdir();
// configure the service
RaftService raft =
RaftService.newBuilder(config)
.logDir(logDir)
.timeout(300)
.build(new Test());
// start this replica
raft.startAsync().awaitRunning();
// let's commit some things
for (int i = 0; i < 10; i++) {
raft.commit(new byte[] {'O', '_', 'o'}).get();
}
}
}