org.apache.wss4j.common.cache.EHCacheExpiry Maven / Gradle / Ivy
/**
* 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 {
/**
* 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 supplier) {
return null;
}
@Override
public Duration getExpiryForUpdate(String s, Supplier supplier, EHCacheValue ehCacheValue) {
return null;
}
}