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;
+import java.util.concurrent.atomic.AtomicLongFieldUpdater;
+import scala.concurrent.duration.FiniteDuration;
public class FollowerLogInformationImpl implements FollowerLogInformation {
+ private static final AtomicLongFieldUpdater<FollowerLogInformationImpl> NEXT_INDEX_UPDATER = AtomicLongFieldUpdater.newUpdater(FollowerLogInformationImpl.class, "nextIndex");
+ private static final AtomicLongFieldUpdater<FollowerLogInformationImpl> MATCH_INDEX_UPDATER = AtomicLongFieldUpdater.newUpdater(FollowerLogInformationImpl.class, "matchIndex");
private final String id;
- private final AtomicLong nextIndex;
+ private final Stopwatch stopwatch = Stopwatch.createUnstarted();
- private final AtomicLong matchIndex;
+ private final long followerTimeoutMillis;
- private final Stopwatch stopwatch;
+ private volatile long nextIndex;
- private final long followerTimeoutMillis;
+ private volatile long matchIndex;
public FollowerLogInformationImpl(String id, long nextIndex,
long matchIndex, FiniteDuration followerTimeoutDuration) {
this.id = id;
- this.nextIndex = new AtomicLong(nextIndex);
- this.matchIndex = new AtomicLong(matchIndex);
- this.stopwatch = new Stopwatch();
+ this.nextIndex = nextIndex;
+ this.matchIndex = matchIndex;
this.followerTimeoutMillis = followerTimeoutDuration.toMillis();
}
+ @Override
public long incrNextIndex(){
- return nextIndex.incrementAndGet();
+ return NEXT_INDEX_UPDATER.incrementAndGet(this);
}
@Override
public long decrNextIndex() {
- return nextIndex.decrementAndGet();
+ return NEXT_INDEX_UPDATER.decrementAndGet(this);
}
@Override
public void setNextIndex(long nextIndex) {
- this.nextIndex.set(nextIndex);
+ this.nextIndex = nextIndex;
}
+ @Override
public long incrMatchIndex(){
- return matchIndex.incrementAndGet();
+ return MATCH_INDEX_UPDATER.incrementAndGet(this);
}
@Override
public void setMatchIndex(long matchIndex) {
- this.matchIndex.set(matchIndex);
+ this.matchIndex = matchIndex;
}
+ @Override
public String getId() {
return id;
}
- public AtomicLong getNextIndex() {
+ @Override
+ public long getNextIndex() {
return nextIndex;
}
- public AtomicLong getMatchIndex() {
+ @Override
+ public long getMatchIndex() {
return matchIndex;
}
stopwatch.stop();
}
}
+
+ @Override
+ public long timeSinceLastActivity() {
+ return stopwatch.elapsed(TimeUnit.MILLISECONDS);
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder builder = new StringBuilder();
+ builder.append("FollowerLogInformationImpl [id=").append(id).append(", nextIndex=").append(nextIndex)
+ .append(", matchIndex=").append(matchIndex).append(", stopwatch=")
+ .append(stopwatch.elapsed(TimeUnit.MILLISECONDS))
+ .append(", followerTimeoutMillis=").append(followerTimeoutMillis).append("]");
+ return builder.toString();
+ }
+
+
}