X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FFrontendMetadata.java;h=d5ecbf6ea416c6c283f0e06b5537293bbdef99e8;hp=9f74a8e940898ed317fbb0d2ec9d910396268ec3;hb=c032937639e5bc223deb8ec60fab9315c16edd16;hpb=127042ea7e148d9dc0282acc3780b4754ca69e12

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendMetadata.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendMetadata.java
index 9f74a8e940..d5ecbf6ea4 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendMetadata.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendMetadata.java
@@ -7,12 +7,14 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
-import com.google.common.base.Preconditions;
+import static com.google.common.base.Verify.verify;
+import static java.util.Objects.requireNonNull;
+
 import com.google.common.collect.Collections2;
+import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Maps;
 import java.util.HashMap;
 import java.util.Map;
-import javax.annotation.concurrent.NotThreadSafe;
 import org.eclipse.jdt.annotation.NonNull;
 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
 import org.opendaylight.controller.cluster.access.concepts.FrontendIdentifier;
@@ -26,11 +28,10 @@ import org.slf4j.LoggerFactory;
 /**
  * Frontend state as observed by a shard follower. This class is responsible for maintaining metadata state
  * so that this can be used to seed {@link LeaderFrontendState} with proper state so that the frontend/backend
- * conversation can continue where it left off.
+ * conversation can continue where it left off. This class is NOT thread-safe.
  *
  * @author Robert Varga
  */
-@NotThreadSafe
 final class FrontendMetadata extends ShardDataTreeMetadata<FrontendShardDataTreeSnapshotMetadata> {
     private static final Logger LOG = LoggerFactory.getLogger(FrontendMetadata.class);
 
@@ -38,7 +39,7 @@ final class FrontendMetadata extends ShardDataTreeMetadata<FrontendShardDataTree
     private final String shardName;
 
     FrontendMetadata(final String shardName) {
-        this.shardName = Preconditions.checkNotNull(shardName);
+        this.shardName = requireNonNull(shardName);
     }
 
     @Override
@@ -59,7 +60,7 @@ final class FrontendMetadata extends ShardDataTreeMetadata<FrontendShardDataTree
 
         for (FrontendClientMetadata m : snapshot.getClients()) {
             LOG.debug("{}: applying metadata {}", shardName, m);
-            final FrontendClientMetadataBuilder b = new FrontendClientMetadataBuilder(shardName, m);
+            final FrontendClientMetadataBuilder b = FrontendClientMetadataBuilder.of(shardName, m);
             final FrontendIdentifier client = m.getIdentifier().getFrontendId();
 
             LOG.debug("{}: client {} updated to {}", shardName, client, b);
@@ -79,7 +80,7 @@ final class FrontendMetadata extends ShardDataTreeMetadata<FrontendShardDataTree
             return existing;
         }
 
-        final FrontendClientMetadataBuilder client = new FrontendClientMetadataBuilder(shardName, id);
+        final FrontendClientMetadataBuilder client = new FrontendClientMetadataBuilder.Enabled(shardName, id);
         final FrontendClientMetadataBuilder previous = clients.put(id.getFrontendId(), client);
         if (previous != null) {
             LOG.debug("{}: Replaced client {} with {}", shardName, previous, client);
@@ -127,4 +128,32 @@ final class FrontendMetadata extends ShardDataTreeMetadata<FrontendShardDataTree
     @NonNull Map<FrontendIdentifier, LeaderFrontendState> toLeaderState(final @NonNull Shard shard) {
         return new HashMap<>(Maps.transformValues(clients, meta -> meta.toLeaderState(shard)));
     }
+
+    void disableTracking(final ClientIdentifier clientId) {
+        final FrontendIdentifier frontendId = clientId.getFrontendId();
+        final FrontendClientMetadataBuilder client = clients.get(frontendId);
+        if (client == null) {
+            // When we havent seen the client before, we still need to disable tracking for him since this only gets
+            // triggered once.
+            LOG.debug("{}: disableTracking {} does not match any client, pre-disabling client.", shardName, clientId);
+            clients.put(frontendId, new FrontendClientMetadataBuilder.Disabled(shardName, clientId));
+            return;
+        }
+        if (!clientId.equals(client.getIdentifier())) {
+            LOG.debug("{}: disableTracking {} does not match client {}, ignoring", shardName, clientId, client);
+            return;
+        }
+        if (client instanceof FrontendClientMetadataBuilder.Disabled) {
+            LOG.debug("{}: client {} is has already disabled tracking", shardName, client);
+            return;
+        }
+
+        verify(clients.replace(frontendId, client, new FrontendClientMetadataBuilder.Disabled(shardName, clientId)));
+    }
+
+    ImmutableSet<ClientIdentifier> getClients() {
+        return clients.values().stream()
+                .map(FrontendClientMetadataBuilder::getIdentifier)
+                .collect(ImmutableSet.toImmutableSet());
+    }
 }