*/
package org.opendaylight.controller.cluster.access.concepts;
+import static java.util.Objects.requireNonNull;
+
import com.google.common.base.MoreObjects;
-import com.google.common.base.Preconditions;
import java.io.DataInput;
import java.io.DataOutput;
-import java.io.Externalizable;
import java.io.IOException;
-import java.io.ObjectInput;
-import java.io.ObjectOutput;
+import org.eclipse.jdt.annotation.NonNull;
import org.opendaylight.yangtools.concepts.WritableIdentifier;
import org.opendaylight.yangtools.concepts.WritableObjects;
* - a {@link ClientIdentifier}, which uniquely identifies a single instantiation of a particular frontend
* - an unsigned long, which uniquely identifies the history on the backend
* - an unsigned long cookie, assigned by the client and meaningless on the backend, which just reflects it back
- *
- * @author Robert Varga
*/
public final class LocalHistoryIdentifier implements WritableIdentifier {
- /*
- * Implementation note: cookie is currently required only for module-based sharding, which is implemented as part
- * of normal DataBroker interfaces. For DOMDataTreeProducer cookie will always be zero, hence
- * we may end up not needing cookie at all.
- *
- * We use WritableObjects.writeLongs() to output historyId and cookie (in that order). If we
- * end up not needing the cookie at all, we can switch to writeLong() and use zero flags for
- * compatibility.
- */
- private static final class Proxy implements Externalizable {
- private static final long serialVersionUID = 1L;
- private ClientIdentifier clientId;
- private long historyId;
- private long cookie;
-
- // checkstyle flags the public modifier as redundant however it is explicitly needed for Java serialization to
- // be able to create instances via reflection.
- @SuppressWarnings("checkstyle:RedundantModifier")
- public Proxy() {
- // For Externalizable
- }
-
- Proxy(final ClientIdentifier frontendId, final long historyId, final long cookie) {
- this.clientId = Preconditions.checkNotNull(frontendId);
- this.historyId = historyId;
- this.cookie = cookie;
- }
-
- @Override
- public void writeExternal(final ObjectOutput out) throws IOException {
- clientId.writeTo(out);
- WritableObjects.writeLongs(out, historyId, cookie);
- }
-
- @Override
- public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
- clientId = ClientIdentifier.readFrom(in);
-
- final byte header = WritableObjects.readLongHeader(in);
- historyId = WritableObjects.readFirstLong(in, header);
- cookie = WritableObjects.readSecondLong(in, header);
- }
-
- private Object readResolve() {
- return new LocalHistoryIdentifier(clientId, historyId, cookie);
- }
- }
-
+ @java.io.Serial
private static final long serialVersionUID = 1L;
- private final ClientIdentifier clientId;
+
+ private final @NonNull ClientIdentifier clientId;
private final long historyId;
private final long cookie;
}
public LocalHistoryIdentifier(final ClientIdentifier frontendId, final long historyId, final long cookie) {
- this.clientId = Preconditions.checkNotNull(frontendId);
+ clientId = requireNonNull(frontendId);
this.historyId = historyId;
this.cookie = cookie;
}
- public static LocalHistoryIdentifier readFrom(final DataInput in) throws IOException {
+ public static @NonNull LocalHistoryIdentifier readFrom(final DataInput in) throws IOException {
final ClientIdentifier clientId = ClientIdentifier.readFrom(in);
final byte header = WritableObjects.readLongHeader(in);
WritableObjects.writeLongs(out, historyId, cookie);
}
- public ClientIdentifier getClientId() {
+ public @NonNull ClientIdentifier getClientId() {
return clientId;
}
if (this == obj) {
return true;
}
- if (!(obj instanceof LocalHistoryIdentifier)) {
+ if (!(obj instanceof LocalHistoryIdentifier other)) {
return false;
}
- final LocalHistoryIdentifier other = (LocalHistoryIdentifier) obj;
return historyId == other.historyId && cookie == other.cookie && clientId.equals(other.clientId);
}
.add("cookie", Long.toUnsignedString(cookie, 16)).toString();
}
+ @java.io.Serial
private Object writeReplace() {
- return new Proxy(clientId, historyId, cookie);
+ return new HI(this);
}
}