+/*
+ * Copyright (c) 2016 Cisco 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.access.concepts;
+
+import com.google.common.annotations.Beta;
+import com.google.common.base.MoreObjects;
+import com.google.common.base.Preconditions;
+import com.google.common.base.Strings;
+import com.google.common.base.Verify;
+import java.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.nio.charset.StandardCharsets;
+import org.opendaylight.yangtools.concepts.Identifier;
+
+/**
+ * Type-safe encapsulation of a cluster member name.
+ *
+ * @author Robert Varga
+ */
+@Beta
+public final class MemberName implements Comparable<MemberName>, Identifier {
+ private static final class Proxy implements Externalizable {
+ private static final long serialVersionUID = 1L;
+ private byte[] serialized;
+
+ public Proxy() {
+ // For Externalizable
+ }
+
+ Proxy(final String name) {
+ serialized = name.getBytes(StandardCharsets.UTF_8);
+ }
+
+ @Override
+ public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(serialized.length);
+ out.write(serialized);
+ }
+
+ @Override
+ public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ serialized = new byte[in.readInt()];
+ in.readFully(serialized);
+ }
+
+ private Object readResolve() {
+ // TODO: consider caching instances here
+ return new MemberName(new String(serialized, StandardCharsets.UTF_8), this);
+ }
+ }
+
+ private static final long serialVersionUID = 1L;
+ private final String name;
+ private volatile Proxy proxy;
+
+ MemberName(final String name) {
+ this.name = Preconditions.checkNotNull(name);
+ }
+
+ MemberName(final String name, final Proxy proxy) {
+ this.name = Preconditions.checkNotNull(name);
+ this.proxy = Verify.verifyNotNull(proxy);
+ }
+
+ public static MemberName forName(final String name) {
+ Preconditions.checkArgument(!Strings.isNullOrEmpty(name));
+ // TODO: consider caching instances here
+ return new MemberName(name);
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ @Override
+ public int hashCode() {
+ return name.hashCode();
+ }
+
+ @Override
+ public boolean equals(final Object o) {
+ return this == o || (o instanceof MemberName && name.equals(((MemberName)o).name));
+ }
+
+ @Override
+ public int compareTo(final MemberName o) {
+ return this == o ? 0 : name.compareTo(o.name);
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(MemberName.class).add("name", name).toString();
+ }
+
+ Object writeReplace() {
+ Proxy ret = proxy;
+ if (ret == null) {
+ // We do not really care if multiple threads race here
+ ret = new Proxy(name);
+ proxy = ret;
+ }
+
+ return ret;
+ }
+}