X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fcds-access-client%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Faccess%2Fclient%2FRecoveringClientActorBehavior.java;h=f40deab30d5bed8bbf1a7eed8da3e76653ce27bf;hp=5e2b455abc4f8f88e685d0aff9cea882d6fbb7f3;hb=HEAD;hpb=50664aceae387ef6dc9a952f5a6d4105d0d3b4a7

diff --git a/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/RecoveringClientActorBehavior.java b/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/RecoveringClientActorBehavior.java
index 5e2b455abc..b44d54921d 100644
--- a/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/RecoveringClientActorBehavior.java
+++ b/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/RecoveringClientActorBehavior.java
@@ -7,9 +7,10 @@
  */
 package org.opendaylight.controller.cluster.access.client;
 
+import static java.util.Objects.requireNonNull;
+
 import akka.persistence.RecoveryCompleted;
 import akka.persistence.SnapshotOffer;
-import com.google.common.base.Preconditions;
 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
 import org.opendaylight.controller.cluster.access.concepts.FrontendIdentifier;
 import org.slf4j.Logger;
@@ -22,12 +23,20 @@ import org.slf4j.LoggerFactory;
  */
 final class RecoveringClientActorBehavior extends AbstractClientActorBehavior<InitialClientActorContext> {
     private static final Logger LOG = LoggerFactory.getLogger(RecoveringClientActorBehavior.class);
+
+    /*
+     * Base for the property name which overrides the initial generation when we fail to find anything from persistence.
+     * The actual property name has the frontend type name appended.
+     */
+    private static final String GENERATION_OVERRIDE_PROP_BASE =
+            "org.opendaylight.controller.cluster.access.client.initial.generation.";
+
     private final FrontendIdentifier currentFrontend;
     private ClientIdentifier lastId = null;
 
     RecoveringClientActorBehavior(final InitialClientActorContext context, final FrontendIdentifier frontendId) {
         super(context);
-        currentFrontend = Preconditions.checkNotNull(frontendId);
+        currentFrontend = requireNonNull(frontendId);
     }
 
     @Override
@@ -48,14 +57,14 @@ final class RecoveringClientActorBehavior extends AbstractClientActorBehavior<In
 
                 nextId = ClientIdentifier.create(currentFrontend, lastId.getGeneration() + 1);
             } else {
-                nextId = ClientIdentifier.create(currentFrontend, 0);
+                nextId = ClientIdentifier.create(currentFrontend, initialGeneration());
             }
 
             LOG.debug("{}: persisting new identifier {}", persistenceId(), nextId);
             context().saveSnapshot(nextId);
             return new SavingClientActorBehavior(context(), nextId);
-        } else if (recover instanceof SnapshotOffer) {
-            lastId = (ClientIdentifier) ((SnapshotOffer)recover).snapshot();
+        } else if (recover instanceof SnapshotOffer snapshotOffer) {
+            lastId = (ClientIdentifier) snapshotOffer.snapshot();
             LOG.debug("{}: recovered identifier {}", persistenceId(), lastId);
         } else {
             LOG.warn("{}: ignoring recovery message {}", persistenceId(), recover);
@@ -63,4 +72,25 @@ final class RecoveringClientActorBehavior extends AbstractClientActorBehavior<In
 
         return this;
     }
-}
\ No newline at end of file
+
+    private long initialGeneration() {
+        final String propName = GENERATION_OVERRIDE_PROP_BASE + currentFrontend.getClientType().getName();
+        final String propValue = System.getProperty(propName);
+        if (propValue == null) {
+            LOG.debug("{}: no initial generation override, starting from 0", persistenceId());
+            return 0;
+        }
+
+        final long ret;
+        try {
+            ret = Long.parseUnsignedLong(propValue);
+        } catch (NumberFormatException e) {
+            LOG.warn("{}: failed to parse initial generation override '{}', starting from 0", persistenceId(),
+                propValue, e);
+            return 0;
+        }
+
+        LOG.info("{}: initial generation set to {}", persistenceId(), ret);
+        return ret;
+    }
+}