2 * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.controller.sal.connect.util;
11 import java.util.concurrent.atomic.AtomicInteger;
13 import com.google.common.base.Preconditions;
14 import com.google.common.base.Strings;
16 public class MessageCounter {
17 final AtomicInteger messageId = new AtomicInteger(0);
19 private static final String messageIdBlueprint = "%s-%s";
21 public String getNewMessageId(final String prefix) {
22 Preconditions.checkArgument(Strings.isNullOrEmpty(prefix) == false, "Null or empty prefix");
23 return String.format(messageIdBlueprint, prefix, getNewMessageId());
26 public String getNewMessageId() {
27 return Integer.toString(messageId.getAndIncrement());