abstract class AbstractStatsTracker<I, K> {
private static final Logger logger = LoggerFactory.getLogger(AbstractStatsTracker.class);
+
+ private static final int WAIT_FOR_REQUEST_CYCLE = 2;
+
private final FutureCallback<RpcResult<? extends TransactionAware>> callback =
new FutureCallback<RpcResult<? extends TransactionAware>>() {
@Override
private final Map<K, Long> trackedItems = new HashMap<>();
private final FlowCapableContext context;
- private final long lifetimeNanos;
+ private long requestCounter;
- protected AbstractStatsTracker(final FlowCapableContext context, final long lifetimeNanos) {
+ protected AbstractStatsTracker(final FlowCapableContext context) {
this.context = Preconditions.checkNotNull(context);
- this.lifetimeNanos = lifetimeNanos;
+ this.requestCounter = 0;
}
protected final InstanceIdentifierBuilder<Node> getNodeIdentifierBuilder() {
- return InstanceIdentifier.builder(getNodeIdentifier());
+ return getNodeIdentifier().builder();
}
protected final NodeRef getNodeRef() {
return context.startDataModification();
}
+ public final synchronized void increaseRequestCounter(){
+ this.requestCounter++;
+ }
protected abstract void cleanupSingleStat(DataModificationTransaction trans, K item);
protected abstract K updateSingleStat(DataModificationTransaction trans, I item);
+ public abstract void request();
public final synchronized void updateStats(List<I> list) {
- final Long expiryTime = System.nanoTime() + lifetimeNanos;
+
final DataModificationTransaction trans = startTransaction();
for (final I item : list) {
- trackedItems.put(updateSingleStat(trans, item), expiryTime);
+ trackedItems.put(updateSingleStat(trans, item), requestCounter);
}
trans.commit();
}
- public final synchronized void cleanup(final DataModificationTransaction trans, long now) {
+ /**
+ * Statistics will be cleaned up if not update in last two request cycles.
+ * @param trans
+ */
+ public final synchronized void cleanup(final DataModificationTransaction trans) {
for (Iterator<Entry<K, Long>> it = trackedItems.entrySet().iterator();it.hasNext();){
Entry<K, Long> e = it.next();
- if (now > e.getValue()) {
+ if (requestCounter >= e.getValue()+WAIT_FOR_REQUEST_CYCLE) {
cleanupSingleStat(trans, e.getKey());
it.remove();
}