+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dmaap
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.dmaap.dbcapi.util;
+
+import java.util.regex.Pattern;
+
+import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
+
+public class Fqdn extends BaseLoggingClass {
+ // regexp value sourced from https://www.regextester.com/23
+ 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])$";
+
+
+ public static boolean isValid( String s ) {
+ appLogger.info( "Fqdn testing: " + s );
+ boolean b = false;
+ if ( s != null ) {
+ b = Pattern.matches( regexp, s);
+ }
+ appLogger.info( "Fqdn isValid=" + b );
+ return b;
+ }
+
+}