/*
* Copyright 2012-2017 the original author or authors.
*
* 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.
*/
package org.springframework.boot.actuate.cache;
import org.springframework.cache.Cache;
import org.springframework.cache.CacheManager;
/**
* Provide a {@link CacheStatistics} based on a {@link Cache}.
*
* @param <C> The {@link Cache} type
* @author Stephane Nicoll
* @author Phillip Webb
* @since 1.3.0
*/
@FunctionalInterface
public interface CacheStatisticsProvider<C extends Cache> {
/**
* Return the current {@link CacheStatistics} snapshot for the specified {@link Cache}
* or {@code null} if the given cache could not be handled.
* @param cacheManager the {@link CacheManager} handling this cache
* @param cache the cache to handle
* @return the current cache statistics or {@code null}
*/
CacheStatistics getCacheStatistics(CacheManager cacheManager, C cache);
}