Improve segmented journal actor metrics

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / persisted / ShardSnapshotState.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/ShardSnapshotState.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/ShardSnapshotState.java
index 5275582f079ba188eb71bf7fcc1c15bd6c082af1..c06c5cf3189d404d38271ef094eccb4204131481 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/ShardSnapshotState.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/ShardSnapshotState.java
@@ -7,13 +7,11 @@
  */
 package org.opendaylight.controller.cluster.datastore.persisted;
 
-import com.google.common.base.Preconditions;
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.annotations.VisibleForTesting;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
-import java.io.Externalizable;
-import java.io.IOException;
-import java.io.ObjectInput;
-import java.io.ObjectOutput;
-import javax.annotation.Nonnull;
+import org.eclipse.jdt.annotation.NonNull;
 import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
 
 /**
@@ -21,55 +19,37 @@ import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
  *
  * @author Thomas Pantelis
  */
-public class ShardSnapshotState implements Snapshot.State {
+public final class ShardSnapshotState implements Snapshot.State {
+    @java.io.Serial
     private static final long serialVersionUID = 1L;
 
-    private static final class Proxy implements Externalizable {
-        private static final long serialVersionUID = 1L;
-
-        private ShardSnapshotState snapshotState;
-
-        // 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
-        }
-
-        Proxy(final ShardSnapshotState snapshotState) {
-            this.snapshotState = snapshotState;
-        }
-
-        @Override
-        public void writeExternal(final ObjectOutput out) throws IOException {
-            snapshotState.snapshot.serialize(out);
-        }
-
-        @Override
-        public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
-            snapshotState = new ShardSnapshotState(ShardDataTreeSnapshot.deserialize(in));
-        }
-
-        private Object readResolve() {
-            return snapshotState;
-        }
-    }
-
     @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 ShardDataTreeSnapshot snapshot;
+    private final @NonNull ShardDataTreeSnapshot snapshot;
+    private final boolean migrated;
+
+    @VisibleForTesting
+    public ShardSnapshotState(final @NonNull ShardDataTreeSnapshot snapshot, final boolean migrated) {
+        this.snapshot = requireNonNull(snapshot);
+        this.migrated = migrated;
+    }
 
-    public ShardSnapshotState(@Nonnull final ShardDataTreeSnapshot snapshot) {
-        this.snapshot = Preconditions.checkNotNull(snapshot);
+    public ShardSnapshotState(final @NonNull ShardDataTreeSnapshot snapshot) {
+        this(snapshot, false);
     }
 
-    @Nonnull
-    public ShardDataTreeSnapshot getSnapshot() {
+    public @NonNull ShardDataTreeSnapshot getSnapshot() {
         return snapshot;
     }
 
+    @Override
+    public boolean needsMigration() {
+        return migrated;
+    }
+
+    @java.io.Serial
     private Object writeReplace() {
-        return new Proxy(this);
+        return new SS(this);
     }
 }