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MemcachedCache.java
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137 lines (121 loc) · 3.11 KB
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/*
* Copyright 2015-2018 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 com.yoiojava.cache.impl;
import java.util.LinkedList;
import java.util.concurrent.locks.ReadWriteLock;
import com.yoiojava.cache.Cache;
import com.yoiojava.logging.Log;
import com.yoiojava.logging.LogFactory;
/**
* @author Yoio<Yoio@3cto.net>
*/
public class MemcachedCache implements Cache {
private static Log logger = LogFactory.getLog(MemcachedCache.class);
protected static final CacheService CACHE_SERVICE = createMemcachedService();
private final ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
private String id;
private LinkedList<String> cacheKeys = new LinkedList<String>();
public MemcachedCache(String id) {
this.id = id;
} // 创建缓存服务类，基于java-memcached-client
protected static CacheService createMemcachedService() {
JMemcachedClientAdapter memcachedAdapter;
try {
memcachedAdapter = new JMemcachedClientAdapter();
} catch (Exception e) {
String msg = "Initial the JMmemcachedClientAdapter Error.";
logger.error(msg, e);
throw new RuntimeException(msg);
}
return new MemcachedService(memcachedAdapter);
}
/**
* @return
*
* @author Yoio<Yoio@3cto.net>
*/
@Override
public String getId() {
return this.id;
}
/**
* @param key
* @param value
*
* @author Yoio<Yoio@3cto.net>
*/
@Override
public void putObject(Object key, Object value) {
String cacheKey = String.valueOf(key.hashCode());
if (!cacheKeys.contains(cacheKey)) {
cacheKeys.add(cacheKey);
}
CACHE_SERVICE.put(cacheKey, value);
}
/**
* @param key
* @return
*
* @author Yoio<Yoio@3cto.net>
*/
@Override
public Object getObject(Object key) {
String cacheKey = String.valueOf(key.hashCode());
cacheKeys.remove(cacheKey);
return CACHE_SERVICE.delete(cacheKey);
}
/**
* @param key
* @return
*
* @author Yoio<Yoio@3cto.net>
*/
@Override
public Object removeObject(Object key) {
return null;
}
/**
*
*
* @author Yoio<Yoio@3cto.net>
*/
@Override
public void clear() {
for (int i = 0; i < cacheKeys.size(); i++) {
String cacheKey = cacheKeys.get(i);
CACHE_SERVICE.delete(cacheKey);
}
cacheKeys.clear();
}
/**
* @return
*
* @author Yoio<Yoio@3cto.net>
*/
@Override
public int getSize() {
return cacheKeys.size();
}
/**
* @return
*
* @author Yoio<Yoio@3cto.net>
*/
@Override
public ReadWriteLock getReadWriteLock() {
return this.readWriteLock;
}
}