2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.dmaap.dbcapi.util;
23 import java.util.regex.Pattern;
25 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
27 public class Fqdn extends BaseLoggingClass {
28 // regexp value sourced from https://www.regextester.com/23
29 static String regexp = "^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\-]*[a-zA-Z0-9])\\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\\-]*[A-Za-z0-9])$";
32 public static boolean isValid( String s ) {
33 appLogger.info( "Fqdn testing: " + s );
36 b = Pattern.matches( regexp, s);
38 appLogger.info( "Fqdn isValid=" + b );