content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.    
   */
  
  package org.apache.bifromq.apiserver.utils;
  
  import static org.apache.bifromq.plugin.settingprovider.Setting.MaxTopicLength;
  import static org.apache.bifromq.plugin.settingprovider.Setting.MaxTopicLevelLength;
  import static org.apache.bifromq.plugin.settingprovider.Setting.MaxTopicLevels;
  import static org.apache.bifromq.util.TopicUtil.isValidTopicFilter;
  
  import org.apache.bifromq.plugin.settingprovider.ISettingProvider;
  import org.apache.bifromq.sysprops.props.SanityCheckMqttUtf8String;
  import org.apache.bifromq.util.UTF8Util;
  
  public class TopicUtil {
      public static boolean checkTopicFilter(String topic, String tenantId, ISettingProvider settingProvider) {
          int maxTopicLevelLength = settingProvider.provide(MaxTopicLevelLength, tenantId);
          int maxTopicLevels = settingProvider.provide(MaxTopicLevels, tenantId);
          int maxTopicLength = settingProvider.provide(MaxTopicLength, tenantId);
          return UTF8Util.isWellFormed(topic, SanityCheckMqttUtf8String.INSTANCE.get())
              && isValidTopicFilter(topic, maxTopicLevelLength, maxTopicLevels, maxTopicLength);
      }
  }
  