Merge pull request #4903 from eddumelendez/gh-4899
* pr/4903: Polish contribution Add Caffeine cache supportpull/5289/head
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1f8b780333
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/*
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* Copyright 2012-2016 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.actuate.cache;
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import com.github.benmanes.caffeine.cache.stats.CacheStats;
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import org.springframework.cache.CacheManager;
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import org.springframework.cache.caffeine.CaffeineCache;
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/**
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* {@link CacheStatisticsProvider} implementation for Caffeine.
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*
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* @author Eddú Meléndez
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* @since 1.4.0
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*/
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public class CaffeineCacheStatisticsProvider
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implements CacheStatisticsProvider<CaffeineCache> {
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@Override
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public CacheStatistics getCacheStatistics(CacheManager cacheManager,
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CaffeineCache cache) {
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DefaultCacheStatistics statistics = new DefaultCacheStatistics();
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statistics.setSize(cache.getNativeCache().estimatedSize());
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CacheStats caffeineStatistics = cache.getNativeCache().stats();
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if (caffeineStatistics.requestCount() > 0) {
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statistics.setHitRatio(caffeineStatistics.hitRate());
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statistics.setMissRatio(caffeineStatistics.missRate());
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}
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return statistics;
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}
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}
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/*
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* Copyright 2012-2016 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.autoconfigure.cache;
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import java.util.List;
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import com.github.benmanes.caffeine.cache.CacheLoader;
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import com.github.benmanes.caffeine.cache.Caffeine;
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import com.github.benmanes.caffeine.cache.CaffeineSpec;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
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import org.springframework.cache.CacheManager;
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import org.springframework.cache.caffeine.CaffeineCacheManager;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Conditional;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.util.CollectionUtils;
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import org.springframework.util.StringUtils;
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/**
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* Caffeine cache configuration.
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*
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* @author Eddú Meléndez
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* @since 1.4.0
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*/
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@Configuration
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@ConditionalOnClass({ Caffeine.class, CaffeineCacheManager.class })
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@ConditionalOnMissingBean(CacheManager.class)
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@Conditional({ CacheCondition.class })
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class CaffeineCacheConfiguration {
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@Autowired
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private CacheProperties cacheProperties;
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@Autowired
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private CacheManagerCustomizers customizers;
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@Autowired(required = false)
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private Caffeine<Object, Object> caffeine;
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@Autowired(required = false)
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private CaffeineSpec caffeineSpec;
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@Autowired(required = false)
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private CacheLoader<Object, Object> cacheLoader;
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@Bean
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public CaffeineCacheManager caffeineCacheManager() {
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CaffeineCacheManager cacheManager = createCacheManager();
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List<String> cacheNames = this.cacheProperties.getCacheNames();
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if (!CollectionUtils.isEmpty(cacheNames)) {
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cacheManager.setCacheNames(cacheNames);
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}
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return this.customizers.customize(cacheManager);
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}
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private CaffeineCacheManager createCacheManager() {
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CaffeineCacheManager cacheManager = new CaffeineCacheManager();
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setCacheBuilder(cacheManager);
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if (this.cacheLoader != null) {
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cacheManager.setCacheLoader(this.cacheLoader);
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}
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return cacheManager;
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}
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private void setCacheBuilder(CaffeineCacheManager cacheManager) {
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String specification = this.cacheProperties.getCaffeine().getSpec();
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if (StringUtils.hasText(specification)) {
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cacheManager.setCacheSpecification(specification);
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}
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else if (this.caffeineSpec != null) {
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cacheManager.setCaffeineSpec(this.caffeineSpec);
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}
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else if (this.caffeine != null) {
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cacheManager.setCaffeine(this.caffeine);
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}
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}
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}
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