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.kafka.common.cache;
  
  /**
   * Wrapper for caches that adds simple synchronization to provide a thread-safe cache. Note that this simply adds
   * synchronization around each cache method on the underlying unsynchronized cache. It does not add any support for
   * atomically checking for existence of an entry and computing and inserting the value if it is missing.
   */
  public class SynchronizedCache<K, V> implements Cache<K, V> {
      private final Cache<K, V> underlying;
  
      public SynchronizedCache(Cache<K, V> underlying) {
          this.underlying = underlying;
      }
  
      @Override
      public synchronized V get(K key) {
          return underlying.get(key);
      }
  
      @Override
      public synchronized void put(K key, V value) {
          underlying.put(key, value);
      }
  
      @Override
      public synchronized boolean remove(K key) {
          return underlying.remove(key);
      }
  
      @Override
      public synchronized long size() {
          return underlying.size();
      }
  }
  