001package ca.uhn.fhir.sl.cache.caffeine;
002
003/*-
004 * #%L
005 * HAPI FHIR - ServiceLoaders - Caching Caffeine
006 * %%
007 * Copyright (C) 2014 - 2023 Smile CDR, Inc.
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import java.util.concurrent.TimeUnit;
024
025import com.github.benmanes.caffeine.cache.Caffeine;
026import ca.uhn.fhir.sl.cache.Cache;
027import ca.uhn.fhir.sl.cache.CacheLoader;
028import ca.uhn.fhir.sl.cache.LoadingCache;
029
030public class CacheProvider<K,V> implements ca.uhn.fhir.sl.cache.CacheProvider<K,V> {
031
032        public Cache<K,V> create(long timeoutMillis) {
033                return new CacheDelegator<K,V>(
034                        Caffeine.newBuilder()
035                                .expireAfterWrite(timeoutMillis, TimeUnit.MILLISECONDS)
036                                .build()
037                );
038         }
039
040        public LoadingCache<K,V> create(long timeoutMillis, CacheLoader<K,V> loading) {
041                return new LoadingCacheDelegator<K,V>(
042                        Caffeine.newBuilder()
043                                .expireAfterWrite(timeoutMillis, TimeUnit.MILLISECONDS)
044                                .build(loading::load)
045                );
046        }
047
048        public Cache<K,V> create(long timeoutMillis, long maximumSize) {
049                return new CacheDelegator<K,V>(
050                        Caffeine.newBuilder()
051                                .expireAfterWrite(timeoutMillis, TimeUnit.MILLISECONDS)
052                                .maximumSize(maximumSize)
053                                .build()
054                );
055        }
056
057        public LoadingCache<K,V> create(long timeoutMillis, long maximumSize, CacheLoader<K,V> loading) {
058                return new LoadingCacheDelegator<K,V>(
059                        Caffeine.newBuilder()
060                                .expireAfterWrite(timeoutMillis, TimeUnit.MILLISECONDS)
061                                .maximumSize(maximumSize)
062                                .build(loading::load)
063                );
064        }
065
066}