| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.wss4j.common.cache; |
| |
| import java.time.Duration; |
| import java.time.Instant; |
| import java.time.temporal.ChronoUnit; |
| import java.util.function.Supplier; |
| |
| import org.ehcache.expiry.ExpiryPolicy; |
| |
| /** |
| * A custom Expiry implementation for EhCache. It uses the supplied expiry which is part of the cache value. |
| * If it doesn't exist, it falls back to the default value (3600 seconds). |
| */ |
| public class EHCacheExpiry implements ExpiryPolicy<String, EHCacheValue> { |
| |
| /** |
| * The default time to live in seconds (60 minutes) |
| */ |
| public static final long DEFAULT_TTL = 3600L; |
| |
| /** |
| * The max time to live in seconds (12 hours) |
| */ |
| public static final long MAX_TTL = DEFAULT_TTL * 12L; |
| |
| |
| @Override |
| public Duration getExpiryForCreation(String s, EHCacheValue ehCacheValue) { |
| Instant expiry = ehCacheValue.getExpiry(); |
| Instant now = Instant.now(); |
| |
| if (expiry == null || expiry.isBefore(now) || expiry.isAfter(now.plusSeconds(MAX_TTL))) { |
| return Duration.of(DEFAULT_TTL, ChronoUnit.SECONDS); |
| } |
| |
| return Duration.of(expiry.toEpochMilli() - now.toEpochMilli(), ChronoUnit.MILLIS); |
| } |
| |
| @Override |
| public Duration getExpiryForAccess(String s, Supplier<? extends EHCacheValue> supplier) { |
| return null; |
| } |
| |
| @Override |
| public Duration getExpiryForUpdate(String s, Supplier<? extends EHCacheValue> supplier, EHCacheValue ehCacheValue) { |
| return null; |
| } |
| |
| |
| } |