X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fstatistics-manager%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fstatistics%2Fmanager%2FAbstractStatsTracker.java;h=e23ad0acdbe43a2603f458dd3a17b467116acd1b;hp=c29b6a7730ced4f24374d2e4e67a650f3ed69293;hb=1c79202684429691381362a27303514f8d2cb59f;hpb=2395ecb818aa01bbd90821767715b3df67b65de0

diff --git a/opendaylight/md-sal/statistics-manager/src/main/java/org/opendaylight/controller/md/statistics/manager/AbstractStatsTracker.java b/opendaylight/md-sal/statistics-manager/src/main/java/org/opendaylight/controller/md/statistics/manager/AbstractStatsTracker.java
index c29b6a7730..e23ad0acdb 100644
--- a/opendaylight/md-sal/statistics-manager/src/main/java/org/opendaylight/controller/md/statistics/manager/AbstractStatsTracker.java
+++ b/opendaylight/md-sal/statistics-manager/src/main/java/org/opendaylight/controller/md/statistics/manager/AbstractStatsTracker.java
@@ -32,6 +32,9 @@ import com.google.common.util.concurrent.JdkFutureAdapters;
 
 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
@@ -62,15 +65,15 @@ abstract class AbstractStatsTracker<I, K> {
 
     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() {
@@ -89,24 +92,32 @@ abstract class AbstractStatsTracker<I, K> {
         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();
             }