package org.opendaylight.controller.cluster.raft;
+import com.google.common.base.Stopwatch;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
public class FollowerLogInformationImpl implements FollowerLogInformation{
private final AtomicLong matchIndex;
+ private final Stopwatch stopwatch;
+
+ private final long followerTimeoutMillis;
+
public FollowerLogInformationImpl(String id, AtomicLong nextIndex,
- AtomicLong matchIndex) {
+ AtomicLong matchIndex, FiniteDuration followerTimeoutDuration) {
this.id = id;
this.nextIndex = nextIndex;
this.matchIndex = matchIndex;
+ this.stopwatch = new Stopwatch();
+ this.followerTimeoutMillis = followerTimeoutDuration.toMillis();
}
public long incrNextIndex(){
return nextIndex.incrementAndGet();
}
+ @Override public long decrNextIndex() {
+ return nextIndex.decrementAndGet();
+ }
+
+ @Override public void setNextIndex(long nextIndex) {
+ this.nextIndex.set(nextIndex);
+ }
+
public long incrMatchIndex(){
return matchIndex.incrementAndGet();
}
+ @Override public void setMatchIndex(long matchIndex) {
+ this.matchIndex.set(matchIndex);
+ }
+
public String getId() {
return id;
}
return matchIndex;
}
+ @Override
+ public boolean isFollowerActive() {
+ long elapsed = stopwatch.elapsed(TimeUnit.MILLISECONDS);
+ return (stopwatch.isRunning()) && (elapsed <= followerTimeoutMillis);
+ }
+
+ @Override
+ public void markFollowerActive() {
+ if (stopwatch.isRunning()) {
+ stopwatch.reset();
+ }
+ stopwatch.start();
+ }
}