*/
package org.opendaylight.controller.cluster.datastore.persisted;
-import static com.google.common.base.Preconditions.checkArgument;
import static java.util.Objects.requireNonNull;
import com.google.common.annotations.Beta;
import com.google.common.base.MoreObjects;
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.io.StreamCorruptedException;
import java.util.Map;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeDataInput;
-import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeStreamVersion;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
/**
* An {@link AbstractVersionedShardDataTreeSnapshot} which contains additional metadata.
@Beta
public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardDataTreeSnapshot
implements Serializable {
- private static final class Proxy implements Externalizable {
- @java.io.Serial
- private static final long serialVersionUID = 1L;
- private static final Logger LOG = LoggerFactory.getLogger(MetadataShardDataTreeSnapshot.class);
-
- private Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> metadata;
- private NormalizedNodeStreamVersion version;
- 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
- }
-
- @Override
- public void writeExternal(final ObjectOutput out) {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
- final int metaSize = in.readInt();
- 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();
- for (int i = 0; i < metaSize; ++i) {
- final ShardDataTreeSnapshotMetadata<?> m = (ShardDataTreeSnapshotMetadata<?>) in.readObject();
- if (m != null) {
- metaBuilder.put(m.getType(), m);
- } else {
- LOG.warn("Skipping null metadata");
- }
- }
-
- metadata = metaBuilder.build();
- final boolean present = in.readBoolean();
- if (!present) {
- throw new StreamCorruptedException("Unexpected missing root node");
- }
-
- final NormalizedNodeDataInput stream = NormalizedNodeDataInput.newDataInput(in);
- version = stream.getVersion();
- rootNode = stream.readNormalizedNode();
- }
-
- private Object readResolve() {
- return new MetadataShardDataTreeSnapshot(rootNode, metadata);
- }
- }
-
@java.io.Serial
private static final long serialVersionUID = 1L;