package com.sogou.qadev.cache.impl;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
import org.apache.log4j.Logger;
import com.sogou.qadev.cache.Cache;
import com.sogou.qadev.cache.EhcacheHandler;
import com.sogou.qadev.service.cynthia.bean.Flow;
import com.sogou.qadev.service.cynthia.bean.UUID;
import com.sogou.qadev.service.cynthia.dao.FlowAccessSessionMySQL;
import com.sogou.qadev.service.cynthia.factory.DataAccessFactory;
/**
* @description:flow cache,process the set and get cache
* @author:liming
* @mail:liming@sogou-inc.com
* @date:2014-5-5 下午7:49:28
* @version:v1.0
*/
public class FlowCache implements Cache<Flow> {
private static Logger logger = Logger.getLogger(FlowCache.class.getName());
private static class SingletonHolder{
private static FlowCache instance = new FlowCache();
}
/**
* @Title:getInstance
* @Type:FlowCache
* @description:single instance
* @date:2014-5-5 下午7:50:14
* @version:v1.0
* @return
*/
public static final FlowCache getInstance()
{
return SingletonHolder.instance;
}
private FlowCache()
{
super();
}
/**
*
* (non-Javadoc)
* <p> Title:get</p>
* <p> Description:get flow from cache by id</p>
* @param id:flow id
* @return
* @see com.sogou.qadev.cache.Cache#get(com.sogou.qadev.service.cynthia.bean.UUID)
*/
@Override
public Flow get(UUID id){
if (id == null) {
return null;
}
return get(id.getValue());
}
/**
* (non-Javadoc)
* <p> Title:get</p>
* @param id
* @return
* @see com.sogou.qadev.cache.Cache#get(java.lang.String)
*/
@Override
public Flow get(String id){
Flow tmp = null;
Object flow = EhcacheHandler.getInstance().get(EhcacheHandler.FOREVER_CACHE,id);
if (flow != null){
if (flow instanceof Flow) {
tmp = (Flow)flow;
}
}
else{
tmp = new FlowAccessSessionMySQL().queryFlowById(DataAccessFactory.getInstance().createUUID(id));
if (tmp != null) {
EhcacheHandler.getInstance().set(EhcacheHandler.FOREVER_CACHE,tmp.getId().getValue(), tmp);
}
}
if (tmp == null) {
logger.info("flow id : " + id + " is not in cache");
}
return tmp;
}
/**
*
* @Title:getAll
* @Type:FlowCache
* @description:get all flows from cache
* @date:2014-5-5 下午7:51:32
* @version:v1.0
* @return:all flows
*/
@SuppressWarnings("unchecked")
public Vector<Flow> getAll(){
Object allFlow = EhcacheHandler.getInstance().get(EhcacheHandler.FOREVER_CACHE,"allFlow");
if (allFlow != null) {
return (Vector<Flow>)allFlow;
}else {
logger.info("all flow is not in cache");
Vector<Flow> allFlowList = new FlowAccessSessionMySQL().queryAllFlow();
EhcacheHandler.getInstance().set(EhcacheHandler.FOREVER_CACHE, EhcacheHandler.FOREVER_CACHE, allFlowList);
return allFlowList;
}
}
/**
* @Title:putAllDataToCache
* @Type:FlowCache
* @description:query all flows from DB, put to the cache
* @date:2014-5-5 下午7:52:04
* @version:v1.0
*/
public void putAllDataToCache(){
List<Flow> allFlows = new FlowAccessSessionMySQL().queryAllFlow();
EhcacheHandler ehcacheHandler = EhcacheHandler.getInstance();
for (Flow flow : allFlows) {
ehcacheHandler.set(EhcacheHandler.FOREVER_CACHE,flow.getId().getValue(), flow);
}
setAll(allFlows);
}
/**
* (non-Javadoc)
* <p> Title:remove</p>
* <p> Description:remove flows from cache by uuids</p>
* @param uuids
* @see com.sogou.qadev.cache.Cache#remove(com.sogou.qadev.service.cynthia.bean.UUID[])
*/
public void remove(UUID[] uuids) {
for (UUID uuid : uuids) {
EhcacheHandler.getInstance().delete(EhcacheHandler.FOREVER_CACHE,uuid.getValue());
}
List<UUID> deleteFlowList = Arrays.asList(uuids);
List<Flow> allFlows = getAll();
Iterator<Flow> it = allFlows.iterator();
while (it.hasNext()) {
if (deleteFlowList.contains(it.next().getId())) {
it.remove();
}
}
setAll(allFlows);
}
/**
* (non-Javadoc)
* <p> Title:set</p>
* @param key
* @param value
* @see com.sogou.qadev.cache.Cache#set(java.lang.String, java.lang.Object)
*/
@Override
public void set(String key, Object value) {
if (value == null) {
return;
}
EhcacheHandler.getInstance().set(EhcacheHandler.FOREVER_CACHE,key, value);
Vector<Flow> allFlows = getAll();
Iterator<Flow> it = allFlows.iterator();
while (it.hasNext()) {
if (it.next().getId().getValue().equals(((Flow)value).getId().getValue())) {
it.remove();
}
}
allFlows.add(0, (Flow)value); //刚插入放在第一位
setAll(allFlows);
}
private void setAll(List<Flow> allFlows){
EhcacheHandler.getInstance().set(EhcacheHandler.FOREVER_CACHE,"allFlow", allFlows);
}
/**
* @description:remove cache by key
* @date:2014-5-6 下午5:10:31
* @version:v1.0
* @param key
*/
private void remove(String key) {
EhcacheHandler.getInstance().delete(EhcacheHandler.FOREVER_CACHE,key);
}
}