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 com.alibaba.cloudapp.messaging.redis.demo.intercepter;
  
  import com.alibaba.fastjson2.JSON;
  import com.alibaba.cloudapp.api.cache.interceptors.MonitoringInterceptor;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class BigKeyMonitorInterceptor extends MonitoringInterceptor<Object> {
  
      private static final int MAX_KEY_SIZE = 10;
      private static final Logger logger = LoggerFactory.getLogger(BigKeyMonitorInterceptor.class);
  
      @Override
      public boolean needMonitoring(byte[] value) {
          return value != null && value.length > MAX_KEY_SIZE;
      }
  
      @Override
      public Void intercept(Object param) {
          logger.warn("big key found, current key class: {}, value:{}",
                  param.getClass(), JSON.toJSONString(param));
          return null;
      }
  }
  