io.micronaut.cache.jcache.JCacheManager Maven / Gradle / Ivy
/*
* Copyright 2017-2019 original 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 io.micronaut.cache.jcache;
import io.micronaut.cache.DefaultCacheManager;
import io.micronaut.cache.SyncCache;
import io.micronaut.context.annotation.Primary;
import io.micronaut.context.annotation.Replaces;
import io.micronaut.context.annotation.Requires;
import io.micronaut.context.exceptions.ConfigurationException;
import io.micronaut.core.convert.ConversionService;
import io.micronaut.core.util.CollectionUtils;
import io.micronaut.scheduling.TaskExecutors;
import javax.annotation.Nonnull;
import javax.cache.Cache;
import javax.cache.CacheManager;
import javax.inject.Named;
import java.util.Set;
import java.util.concurrent.ExecutorService;
/**
* Adapter for JCache. Replaces the {@link DefaultCacheManager} if a JCache bean is present.
*
* @author graemerocher
* @since 1.1.0
*/
@Replaces(DefaultCacheManager.class)
@Requires(beans = CacheManager.class)
@Requires(property = JCacheManager.JCACHE_ENABLED, value = "true", defaultValue = "true")
@Primary
public class JCacheManager implements io.micronaut.cache.CacheManager {
/**
* Whether JCache integration is enabled.
*/
public static final String JCACHE_ENABLED = "micronaut.jcache.enabled";
private final CacheManager cacheManager;
private final ConversionService conversionService;
private final ExecutorService executorService;
/**
* Default constructor.
*
* @param cacheManager The cache manager
* @param executorService The executor to execute I/O operations
* @param conversionService The conversion service
*/
protected JCacheManager(
@Nonnull CacheManager cacheManager,
@Nonnull @Named(TaskExecutors.IO) ExecutorService executorService,
@Nonnull ConversionService conversionService) {
this.cacheManager = cacheManager;
this.conversionService = conversionService;
this.executorService = executorService;
}
@Override
@Nonnull
public Set getCacheNames() {
return CollectionUtils.iterableToSet(cacheManager.getCacheNames());
}
@Override
@Nonnull
public SyncCache getCache(String name) {
final Cache cache = cacheManager.getCache(name);
if (cache == null) {
throw new ConfigurationException("No cache configured for name: " + name);
}
return new JCacheSyncCache(cache, conversionService, executorService);
}
/**
* @return The JCache cache manager.
*/
@Nonnull
public CacheManager getCacheManager() {
return cacheManager;
}
}