+/*
+ * Copyright (c) 2017 Brocade Communications Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.cluster.datastore.persisted;
+
+import com.google.common.collect.ImmutableList;
+import java.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+import javax.annotation.Nonnull;
+
+/**
+ * Represents the persisted snapshot state for the ShardManager.
+ *
+ * @author Thomas Pantelis
+ */
+public class ShardManagerSnapshot implements Serializable {
+ private static final long serialVersionUID = 1L;
+
+ private static final class Proxy implements Externalizable {
+ private static final long serialVersionUID = 1L;
+
+ private ShardManagerSnapshot snapshot;
+
+ // 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 ShardManagerSnapshot snapshot) {
+ this.snapshot = snapshot;
+ }
+
+ @Override
+ public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(snapshot.shardList.size());
+ for (String shard: snapshot.shardList) {
+ out.writeObject(shard);
+ }
+ }
+
+ @Override
+ public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ int size = in.readInt();
+ List<String> shardList = new ArrayList<>(size);
+ for (int i = 0; i < size; i++) {
+ shardList.add((String) in.readObject());
+ }
+
+ snapshot = new ShardManagerSnapshot(shardList);
+ }
+
+ private Object readResolve() {
+ return snapshot;
+ }
+ }
+
+ private final List<String> shardList;
+
+ public ShardManagerSnapshot(@Nonnull final List<String> shardList) {
+ this.shardList = ImmutableList.copyOf(shardList);
+ }
+
+ public List<String> getShardList() {
+ return this.shardList;
+ }
+
+ @SuppressWarnings("static-method")
+ private Object writeReplace() {
+ return new Proxy(this);
+ }
+
+ @Override
+ public String toString() {
+ return "ShardManagerSnapshot [ShardList = " + shardList + " ]";
+ }
+}
Code Review / controller.git / commitdiff