/*
* Copyright 2002-2016 the original author or 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 org.springframework.security.core.userdetails.cache;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.cache.Cache;
import org.springframework.security.core.userdetails.UserCache;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.util.Assert;
/**
* Caches {@link UserDetails} instances in a Spring defined {@link Cache}.
*
* @author Marten Deinum
* @since 3.2
*/
public class SpringCacheBasedUserCache implements UserCache {
// ~ Static fields/initializers
// =====================================================================================
private static final Log logger = LogFactory.getLog(SpringCacheBasedUserCache.class);
// ~ Instance fields
// ================================================================================================
private final Cache cache;
// ~ Constructors
// ===================================================================================================
public SpringCacheBasedUserCache(Cache cache) throws Exception {
Assert.notNull(cache, "cache mandatory");
this.cache = cache;
}
// ~ Methods
// ========================================================================================================
public UserDetails getUserFromCache(String username) {
Cache.ValueWrapper element = username != null ? cache.get(username) : null;
if (logger.isDebugEnabled()) {
logger.debug("Cache hit: " + (element != null) + "; username: " + username);
}
if (element == null) {
return null;
}
else {
return (UserDetails) element.get();
}
}
public void putUserInCache(UserDetails user) {
if (logger.isDebugEnabled()) {
logger.debug("Cache put: " + user.getUsername());
}
cache.put(user.getUsername(), user);
}
public void removeUserFromCache(UserDetails user) {
if (logger.isDebugEnabled()) {
logger.debug("Cache remove: " + user.getUsername());
}
this.removeUserFromCache(user.getUsername());
}
public void removeUserFromCache(String username) {
cache.evict(username);
}
}