2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2022 Nordix Foundation
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.cps.ncmp.rest.util;
23 import java.util.regex.Pattern;
24 import lombok.AccessLevel;
25 import lombok.NoArgsConstructor;
26 import org.onap.cps.ncmp.rest.exceptions.InvalidTopicException;
28 @NoArgsConstructor(access = AccessLevel.PRIVATE)
29 public class TopicValidator {
31 private static final Pattern TOPIC_NAME_PATTERN = Pattern.compile("^[a-zA-Z0-9]([._-](?![._-])|"
32 + "[a-zA-Z0-9]){0,120}[a-zA-Z0-9]$");
35 * Validate kafka topic name pattern.
37 * @param topicName name of the topic to be validated
39 * @throws InvalidTopicException if the topic is not valid
41 public static void validateTopicName(final String topicName) {
42 if (!TOPIC_NAME_PATTERN.matcher(topicName).matches()) {
43 throw new InvalidTopicException("Topic name " + topicName + " is invalid", "invalid topic");