/*
 * 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
 *
 *   https://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.accumulo.core.file.blockfile.cache;

import org.apache.accumulo.core.logging.LoggingBlockCache;
import org.apache.accumulo.core.spi.cache.BlockCache;
import org.apache.accumulo.core.spi.cache.CacheType;

public class BlockCacheUtil {
  public static BlockCache instrument(CacheType type, BlockCache cache) {
    if (cache == null) {
      return null;
    }

    if (cache instanceof InstrumentedBlockCache || cache instanceof LoggingBlockCache) {
      // its already instrumented
      return cache;
    }

    return LoggingBlockCache.wrap(type, InstrumentedBlockCache.wrap(type, cache));
  }
}
