diff options
Diffstat (limited to 'cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/util/TopicValidator.java')
-rw-r--r-- | cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/util/TopicValidator.java | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/util/TopicValidator.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/util/TopicValidator.java new file mode 100644 index 000000000..313e7bc01 --- /dev/null +++ b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/util/TopicValidator.java @@ -0,0 +1,44 @@ +/* + * ============LICENSE_START======================================================= + * Copyright (C) 2022 Nordix Foundation + * ================================================================================ + * 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. + * + * SPDX-License-Identifier: Apache-2.0 + * ============LICENSE_END========================================================= + */ + +package org.onap.cps.ncmp.rest.util; + +import java.util.regex.Pattern; +import org.onap.cps.ncmp.rest.exceptions.InvalidTopicException; + +public class TopicValidator { + + private static final Pattern TOPIC_NAME_PATTERN = Pattern.compile("^[a-zA-Z0-9]([._-](?![._-])|" + + "[a-zA-Z0-9]){0,120}[a-zA-Z0-9]$"); + + /** + * Validate kafka topic name pattern. + * + * @param topicName name of the topic to be validated + * + * @throws InvalidTopicException if the topic is not valid + */ + public static void validateTopicName(final String topicName) { + if (!TOPIC_NAME_PATTERN.matcher(topicName).matches()) { + throw new InvalidTopicException("Topic name " + topicName + " is invalid", "invalid topic"); + } + } + +} |