X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2Fpersisted%2FMetadataShardDataTreeSnapshot.java;h=5cabd7122e5884efd0435887c1fc0dd50d9c41a5;hb=057b787289f7b909d7013c22ac73a1c91c860af8;hp=682c0b73ece07ca534b802a94b0c6da5ba67fc2e;hpb=b70b396725749d3fd6ca761f02f4b630f6f4f1ce;p=controller.git

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/MetadataShardDataTreeSnapshot.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/MetadataShardDataTreeSnapshot.java
index 682c0b73ec..5cabd7122e 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/MetadataShardDataTreeSnapshot.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/MetadataShardDataTreeSnapshot.java
@@ -12,14 +12,17 @@ import com.google.common.base.Preconditions;
 import com.google.common.base.Verify;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableMap.Builder;
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.io.Externalizable;
 import java.io.IOException;
 import java.io.ObjectInput;
 import java.io.ObjectOutput;
 import java.io.Serializable;
 import java.util.Map;
-import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils;
+import org.opendaylight.controller.cluster.datastore.node.utils.stream.SerializationUtils;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * An {@link AbstractVersionedShardDataTreeSnapshot} which contains additional metadata.
@@ -27,13 +30,18 @@ import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  * @author Robert Varga
  */
 @Beta
-public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardDataTreeSnapshot implements Serializable {
+public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardDataTreeSnapshot
+        implements Serializable {
     private static final class Proxy implements Externalizable {
         private static final long serialVersionUID = 1L;
+        private static final Logger LOG = LoggerFactory.getLogger(MetadataShardDataTreeSnapshot.class);
 
-        private Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metadata;
+        private Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> metadata;
         private NormalizedNode<?, ?> rootNode;
 
+        // checkstyle flags the public modifier as redundant which really doesn't make sense since it clearly isn't
+        // redundant. It is explicitly needed for Java serialization to be able to create instances via reflection.
+        @SuppressWarnings("checkstyle:RedundantModifier")
         public Proxy() {
             // For Externalizable
         }
@@ -46,7 +54,7 @@ public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardD
         @Override
         public void writeExternal(final ObjectOutput out) throws IOException {
             out.writeInt(metadata.size());
-            for (ShardDataTreeSnapshotMetadata m : metadata.values()) {
+            for (ShardDataTreeSnapshotMetadata<?> m : metadata.values()) {
                 out.writeObject(m);
             }
 
@@ -59,11 +67,15 @@ public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardD
             Preconditions.checkArgument(metaSize >= 0, "Invalid negative metadata map length %s", metaSize);
 
             // Default pre-allocate is 4, which should be fine
-            final Builder<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metaBuilder =
-                    ImmutableMap.builder();
+            final Builder<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>>
+                    metaBuilder = ImmutableMap.builder();
             for (int i = 0; i < metaSize; ++i) {
-                final ShardDataTreeSnapshotMetadata m = (ShardDataTreeSnapshotMetadata) in.readObject();
-                metaBuilder.put(m.getClass(), m);
+                final ShardDataTreeSnapshotMetadata<?> m = (ShardDataTreeSnapshotMetadata<?>) in.readObject();
+                if (m != null) {
+                    metaBuilder.put(m.getType(), m);
+                } else {
+                    LOG.warn("Skipping null metadata");
+                }
             }
 
             metadata = metaBuilder.build();
@@ -77,7 +89,12 @@ public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardD
 
     private static final long serialVersionUID = 1L;
 
-    private final Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metadata;
+    @SuppressFBWarnings(value = "SE_BAD_FIELD", justification = "This field is not Serializable but this class "
+            + "implements writeReplace to delegate serialization to a Proxy class and thus instances of this class "
+            + "aren't serialized. FindBugs does not recognize this.")
+    private final Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> metadata;
+
+    @SuppressFBWarnings(value = "SE_BAD_FIELD", justification = "See above justification.")
     private final NormalizedNode<?, ?> rootNode;
 
     public MetadataShardDataTreeSnapshot(final NormalizedNode<?, ?> rootNode) {
@@ -85,12 +102,12 @@ public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardD
     }
 
     public MetadataShardDataTreeSnapshot(final NormalizedNode<?, ?> rootNode,
-            final Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metadata) {
+            final Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> metadata) {
         this.rootNode = Preconditions.checkNotNull(rootNode);
         this.metadata = ImmutableMap.copyOf(metadata);
     }
 
-    public Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> getMetadata() {
+    public Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> getMetadata() {
         return metadata;
     }