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/**
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* Copyright (C) 2017 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.api.config;
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import org.apache.log4j.Logger;
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import org.springframework.beans.factory.DisposableBean;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import eu.etaxonomy.cdm.api.cache.CdmCacherBase;
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import net.sf.ehcache.CacheManager;
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import net.sf.ehcache.config.CacheConfiguration;
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import net.sf.ehcache.config.CacheConfiguration.CacheEventListenerFactoryConfiguration;
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import net.sf.ehcache.config.DiskStoreConfiguration;
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import net.sf.ehcache.store.MemoryStoreEvictionPolicy;
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/**
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*
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* @author a.kohlbecker
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* @since Feb 1, 2017
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*
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*/
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@Configuration
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// @EnableCaching // for future use
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public class EhCacheConfiguration implements DisposableBean {
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public static final Logger logger = Logger.getLogger(EhCacheConfiguration.class);
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@Autowired(required = false)
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public DiskStoreConfiguration diskStoreConfiguration = null;
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/**
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* The DiskStoreConfiguration can either be autowired or set explicite
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* @param diskStoreConfiguration the diskStoreConfiguration to set
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*/
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public void setDiskStoreConfiguration(DiskStoreConfiguration diskStoreConfiguration) {
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this.diskStoreConfiguration = diskStoreConfiguration;
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}
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private CacheManager cacheManager = null;
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@Bean
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public CacheManager cacheManager(){
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net.sf.ehcache.config.Configuration conf = new net.sf.ehcache.config.Configuration();
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if(diskStoreConfiguration != null){
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logger.debug("creating CacheManager with disk store");
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conf.addDiskStore(diskStoreConfiguration);
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}
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conf.addDefaultCache(getDefaultCacheConfiguration());
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// creates a singleton
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cacheManager = CacheManager.create(conf);
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logger.debug("CacheManager created");
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return cacheManager;
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}
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/**
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* Returns the default cache configuration for the cache
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* named {@link CdmCacherBase#DEFAULT_CACHE_NAME "cdmDefaultCache"}
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*
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* @return
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*/
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protected CacheConfiguration getDefaultCacheConfiguration() {
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CacheEventListenerFactoryConfiguration factory;
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// For a better understanding on how to size caches, refer to
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// http://ehcache.org/documentation/configuration/cache-size
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CacheConfiguration cc = new CacheConfiguration(CdmCacherBase.DEFAULT_CACHE_NAME, 500)
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.memoryStoreEvictionPolicy(MemoryStoreEvictionPolicy.LFU)
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.maxEntriesLocalHeap(10) // avoid ehache consuming too much heap
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.eternal(false)
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// default ttl and tti set to 2 hours
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.timeToLiveSeconds(60*60*2)
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.timeToIdleSeconds(60*60*2)
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.statistics(true);
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return cc;
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}
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@Override
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public void destroy() {
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if (cacheManager != null) {
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logger.info("Shutting down EhCache CacheManager");
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this.cacheManager.shutdown();
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}
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}
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}
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