/*
 * Copyright 2010-2013 Ning, Inc.
 * Copyright 2014-2017 Groupon, Inc
 * Copyright 2014-2017 The Billing Project, LLC
 *
 * The Billing Project licenses this file to you 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.killbill.billing.util.cache;

// import java.util.LinkedHashMap;
// import java.util.Map;
// import java.util.Set;

// import javax.cache.Cache;
// import javax.cache.CacheManager;
// import javax.inject.Inject;
// import javax.inject.Provider;

// import org.killbill.billing.util.cache.Cachable.CacheType;
// import org.slf4j.Logger;
// import org.slf4j.LoggerFactory;

// import com.google.common.base.Preconditions;

// // Build the abstraction layer between JCache and Kill Bill
// public class CacheControllerDispatcherProvider implements Provider<CacheControllerDispatcher> {

//     private static final Logger logger = LoggerFactory.getLogger(CacheControllerDispatcherProvider.class);

//     private final CacheManager cacheManager;
//     private final Set<BaseCacheLoader> cacheLoaders;

//     @Inject
//     public CacheControllerDispatcherProvider(final CacheManager cacheManager,
//                                              final Set<BaseCacheLoader> cacheLoaders) {
//         this.cacheManager = cacheManager;
//         this.cacheLoaders = cacheLoaders;
//     }

//     @Override
//     public CacheControllerDispatcher get() {
//         final Map<CacheType, CacheController<Object, Object>> cacheControllers = new LinkedHashMap<CacheType, CacheController<Object, Object>>();
//         for (final BaseCacheLoader cacheLoader : cacheLoaders) {
//             final CacheType cacheType = cacheLoader.getCacheType();

//             final Cache cache = cacheManager.getCache(cacheType.getCacheName(), cacheType.getKeyType(), cacheType.getValueType());
//             if (cache == null) {
//                 logger.warn("Cache for cacheName='{}' not configured", cacheLoader.getCacheType().getCacheName());
//                 continue;
//             }
//             Preconditions.checkState(!cache.isClosed(), "Cache '%s' should not be closed", cacheType.getCacheName());

//             final CacheController<Object, Object> killBillCacheController = new KillBillCacheController<Object, Object>(cache, cacheLoader);
//             cacheControllers.put(cacheType, killBillCacheController);
//         }

//         return new CacheControllerDispatcher(cacheControllers);
//     }
// }
