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com.base4j.j2cache.CacheManager Maven / Gradle / Ivy
package com.base4j.j2cache;
import java.util.Enumeration;
import java.util.List;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.base4j.j2cache.ehcache.EhCacheProvider;
import com.base4j.j2cache.redis.RedisCacheProvider;
/**
* 缓存管理器
* @author Winter Lau
*/
public class CacheManager {
private final static Logger log = LoggerFactory.getLogger(CacheManager.class);
private static CacheProvider l1_provider;
private static CacheProvider l2_provider;
private static CacheExpiredListener listener;
private static String serializer ;
/**
* Initialize Cache Provider
* @param listener cache listener
*/
public static void initCacheProvider(CacheExpiredListener listener){
CacheManager.listener = listener;
try{
Properties props = J2Cache.getConfig();
CacheManager.l1_provider = getProviderInstance(props.getProperty("cache.L1.provider_class"));
CacheManager.l1_provider.start(getProviderProperties(props, CacheManager.l1_provider));
log.info("Using L1 CacheProvider : " + l1_provider.getClass().getName());
CacheManager.l2_provider = getProviderInstance(props.getProperty("cache.L2.provider_class"));
CacheManager.l2_provider.start(getProviderProperties(props, CacheManager.l2_provider));
log.info("Using L2 CacheProvider : " + l2_provider.getClass().getName());
CacheManager.serializer = props.getProperty("cache.serialization");
}catch(Exception e){
throw new CacheException("Unabled to initialize cache providers", e);
}
}
public final static String getSerializer() {
return serializer;
}
private final static CacheProvider getProviderInstance(String value) throws Exception {
if("ehcache".equalsIgnoreCase(value))
return new EhCacheProvider();
if("redis".equalsIgnoreCase(value))
return new RedisCacheProvider();
if("none".equalsIgnoreCase(value))
return new NullCacheProvider();
return (CacheProvider)Class.forName(value).newInstance();
}
private final static Properties getProviderProperties(Properties props, CacheProvider provider) {
Properties new_props = new Properties();
Enumeration keys = props.keys();
String prefix = provider.name() + '.';
while(keys.hasMoreElements()){
String key = (String)keys.nextElement();
if(key.startsWith(prefix))
new_props.setProperty(key.substring(prefix.length()), props.getProperty(key));
}
return new_props;
}
private final static Cache _GetCache(int level, String cache_name, boolean autoCreate) {
return ((level==1)?l1_provider:l2_provider).buildCache(cache_name, autoCreate, listener);
}
public final static void shutdown(int level) {
((level==1)?l1_provider:l2_provider).stop();
}
/**
* 获取缓存中的数据
* @param level Cache Level: L1 and L2
* @param name Cache region name
* @param key Cache key
* @return Cache object
*/
public final static Object get(int level, String name, Object key){
//System.out.println("GET1 => " + name+":"+key);
if(name!=null && key != null) {
Cache cache = _GetCache(level, name, false);
if (cache != null)
return cache.get(key);
}
return null;
}
/**
* 获取缓存中的数据
* @param level Cache Level -> L1 and L2
* @param resultClass Cache object class
* @param name Cache region name
* @param key Cache key
* @return Cache object
*/
@SuppressWarnings("unchecked")
public final static T get(int level, Class resultClass, String name, Object key){
//System.out.println("GET2 => " + name+":"+key);
if(name!=null && key != null) {
Cache cache =_GetCache(level, name, false);
if (cache != null)
return (T)cache.get(key);
}
return null;
}
/**
* 写入缓存
* @param level Cache Level: L1 and L2
* @param name Cache region name
* @param key Cache key
* @param value Cache value
*/
public final static void set(int level, String name, Object key, Object value){
//System.out.println("SET => " + name+":"+key+"="+value);
if(name!=null && key != null && value!=null) {
Cache cache =_GetCache(level, name, true);
if (cache != null)
cache.put(key,value);
}
}
public final static void set(int level, String name, Object key, Object value, Integer expireInSec){
//System.out.println("SET => " + name+":"+key+"="+value);
if(name!=null && key != null && value!=null) {
Cache cache =_GetCache(level, name, true);
if (cache != null)
cache.put(key, value, expireInSec);
}
}
/**
* 清除缓存中的某个数据
* @param level Cache Level: L1 and L2
* @param name Cache region name
* @param key Cache key
*/
public final static void evict(int level, String name, Object key){
//batchEvict(level, name, java.util.Arrays.asList(key));
if(name!=null && key != null) {
Cache cache =_GetCache(level, name, false);
if (cache != null)
cache.evict(key);
}
}
/**
* 批量删除缓存中的一些数据
* @param level Cache Level： L1 and L2
* @param name Cache region name
* @param keys Cache keys
*/
@SuppressWarnings("rawtypes")
public final static void batchEvict(int level, String name, List keys) {
if(name!=null && keys != null && keys.size() > 0) {
Cache cache =_GetCache(level, name, false);
if (cache != null)
cache.evict(keys);
}
}
/**
* Clear the cache
* @param level Cache level
* @param name cache region name
*/
public final static void clear(int level, String name) throws CacheException {
Cache cache =_GetCache(level, name, false);
if(cache != null)
cache.clear();
}
/**
* list cache keys
* @param level Cache level
* @param name cache region name
* @return Key List
*/
@SuppressWarnings("rawtypes")
public final static List keys(int level, String name) throws CacheException {
Cache cache =_GetCache(level, name, false);
return (cache!=null)?cache.keys():null;
}
}
