How to integrate Terracota clustering with JCache Provider

[Alexandre Alberti Buendia]

1. What version of Ehcache you are currently using:  -> 3.4
2. Paste the configuration for the Cache/CacheManager you have an issue with;
3. Add any name and version of other library or framework you use Ehcache with (e.g. Hibernate);
4. Providing JDK and OS versions maybe useful as well.
   

I'm using ehcache 3.4.0 and I'm very lost at the point to "transform" cacheManager from org.ehcache.CacheManager to a org.springframework.cache.CacheManager valid One.

This code is currently working (as http://www.ehcache.org/documentation/3.4/clustered-cache.html suggests):

@Bean(name = "cacheManager")

public CacheManager cacheManager() throws URISyntaxException {

CacheManagerBuilder<PersistentCacheManager> clusteredCacheManagerBuilder = CacheManagerBuilder.newCacheManagerBuilder().with(cluster(URI.create(props.readCacheLocation())).autoCreate()).withCache("listAllCache", newCacheConfigurationBuilder(String.class, List.class, heap(100)).withExpiry(timeToLiveExpiration(of(60, TimeUnit.SECONDS))));

PersistentCacheManager cacheManager = clusteredCacheManagerBuilder.build(true);

return cacheManager; 

}

But I'm so lost when it turns to use a JCacheCacheManager and @EnableCaching/@Cacheable Annotations. I tried something like:

@Bean(name = "cacheManager")

public org.springframework.cache.CacheManager cacheManager() throws URISyntaxException {

ServerSideConfigurationBuilder serverSideConfigurationBuilder = cluster(URI.create(props.readCacheLocation())).autoCreate();

CachingProvider cachingProvider = Caching.getCachingProvider();

EhcacheCachingProvider ehcacheProvider = (EhcacheCachingProvider) cachingProvider;

DefaultConfiguration configuration = new DefaultConfiguration(ehcacheProvider.getDefaultClassLoader(), serverSideConfigurationBuilder.build());

javax.cache.CacheManager cacheManager = ehcacheProvider.getCacheManager(ehcacheProvider.getDefaultURI(), configuration);

MutableConfiguration<String, List> configuration2 = new MutableConfiguration<String, List>().setTypes(String.class, List.class).setStoreByValue(false)

.setExpiryPolicyFactory(CreatedExpiryPolicy.factoryOf(Duration.ONE_MINUTE));

cacheManager.createCache("listAllCache", configuration2);

return new JCacheCacheManager(cacheManager);

}

but when using @EnableCaching it starts using a MalformedParametrizedTypeException that I can't understand why.

methon in Service class:

@Service

public class CountryManager {

public static final String KEY = "countryAllCache";

......

@Override

@Cacheable(value = "listAllCache", key = "#root.target.KEY")

public List<CountryRes> findAll(User user) {

return findAllTemplate(user);

}

......

}

Any help would be very nice.

Thanks in advance, Alex.

[Alexandre Alberti Buendia]

Jdk is 1.8 and OS is Windows 7.

Using JpaRepository.

El dimecres, 20 desembre de 2017 18:01:27 UTC+1, Alexandre Alberti Buendia va escriure:

[Henri Tremblay]

Hi,

You have a full working example here:

https://github.com/ehcache/ehcache3-samples/blob/master/fullstack/src/main/java/org/terracotta/demo/config/CacheConfiguration.java

Here is an extract:

@Bean
@Override
public org.springframework.cache.CacheManager cacheManager() {
    cacheManager = createClusteredCacheManager();
    return new JCacheCacheManager(cacheManager);
}

@PreDestroy
public void destroy() {
    log.info("Close Cache Manager");
    cacheManager.close();
}

private CacheManager createClusteredCacheManager() {
    JHipsterProperties.Cache.Ehcache.Cluster clusterProperties = properties.getCache().getEhcache().getCluster();
    URI clusterUri = clusterProperties.getUri();
    boolean autoCreate = clusterProperties.isAutoCreate();
    long clusteredCacheSize = clusterProperties.getSizeInMb();
    Consistency consistency = clusterProperties.getConsistency();

    long heapCacheSize = properties.getCache().getEhcache().getSize();
    long ttl = properties.getCache().getEhcache().getTimeToLiveSeconds();

    ClusteringServiceConfigurationBuilder clusteringServiceConfigurationBuilder = ClusteringServiceConfigurationBuilder.cluster(clusterUri);
    ServerSideConfigurationBuilder serverSideConfigurationBuilder = (autoCreate ? clusteringServiceConfigurationBuilder.autoCreate() : clusteringServiceConfigurationBuilder.expecting())
        .defaultServerResource("primary-server-resource");

    org.ehcache.config.CacheConfiguration<Object, Object> cacheConfiguration = CacheConfigurationBuilder
        .newCacheConfigurationBuilder(Object.class, Object.class, ResourcePoolsBuilder
            .newResourcePoolsBuilder()
            .heap(heapCacheSize)
            .with(ClusteredResourcePoolBuilder.clusteredDedicated(clusteredCacheSize, MemoryUnit.MB)))
        .withExpiry(Expirations.timeToLiveExpiration(new org.ehcache.expiry.Duration(ttl, TimeUnit.SECONDS)))
        .add(new ClusteredStoreConfiguration(consistency)).build();

    Map<String, org.ehcache.config.CacheConfiguration<?, ?>> caches = createCacheConfigurations(cacheConfiguration);

    EhcacheCachingProvider provider = getCachingProvider();
    DefaultConfiguration configuration = new DefaultConfiguration(caches, provider.getDefaultClassLoader(), serverSideConfigurationBuilder.build());
    return provider.getCacheManager(provider.getDefaultURI(), configuration);
}

private Map<String, org.ehcache.config.CacheConfiguration<?, ?>> createCacheConfigurations(org.ehcache.config.CacheConfiguration<Object, Object> cacheConfiguration) {
    Map<String, org.ehcache.config.CacheConfiguration<?, ?>> caches = new HashMap<>();
    //...
    caches.put("weatherReports", cacheConfiguration);
    return caches;
}

private EhcacheCachingProvider getCachingProvider() {
    return (EhcacheCachingProvider) Caching.getCachingProvider();
}

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