/* ==================================================================
* Created [2009-4-27 下午11:32:55] by Jon.King
* ==================================================================
* TSS
* ==================================================================
* mailTo:jinpujun@hotmail.com
* Copyright (c) Jon.King, 2009-2012
* ==================================================================
*/
package com.jinhe.tss.component.cache;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.jinhe.tss.component.support.web.webwork.PTActionSupport;
import com.jinhe.tss.core.cachepool.CacheManager;
import com.jinhe.tss.core.cachepool.Cacheable;
import com.jinhe.tss.core.cachepool.CacheableKey;
import com.jinhe.tss.core.cachepool.strategy.CacheConstants;
import com.jinhe.tss.core.cachepool.strategy.CacheStrategy;
import com.jinhe.tss.core.util.BeanUtil;
import com.jinhe.tss.core.util.XMLDocUtil;
import com.jinhe.tss.core.web.dispaly.grid.DefaultGridNode;
import com.jinhe.tss.core.web.dispaly.grid.GridDataEncoder;
import com.jinhe.tss.core.web.dispaly.grid.IGridNode;
import com.jinhe.tss.core.web.dispaly.tree.ITreeNode;
import com.jinhe.tss.core.web.dispaly.tree.TreeAttributesMap;
import com.jinhe.tss.core.web.dispaly.tree.TreeEncoder;
import com.jinhe.tss.core.web.dispaly.xform.XFormEncoder;
/**
* <p> CacheStrategyAction.java </p>
*/
public class CacheStrategyAction extends PTActionSupport{
private static final long serialVersionUID = 7921364871206752664L;
private String code;
private String key;
private CacheStrategy cacheStrategy = new CacheStrategy();
XMLCacheStrategyManager manager = XMLCacheStrategyManager.getInstance();
/**
* 修改缓存策略。
* @return
*/
public String modifyCacheStrategy(){
manager.saveCacheStrategy(cacheStrategy);
return printSuccessMessage();
}
/**
* 树型展示缓存策略
* @return
*/
public String getAllCacheStrategy4Tree(){
List<CacheStrategy> strategies = manager.getAllCacheStrategy();
List<ITreeNode> treeNodeList = new ArrayList<ITreeNode>();
for(final CacheStrategy stategy : strategies){
treeNodeList.add(new ITreeNode(){
public TreeAttributesMap getAttributes() {
TreeAttributesMap map = new TreeAttributesMap(stategy.getCode(), stategy.getName());
map.put("icon", "images/cache.gif");
map.put("visible", stategy.getVisible());
map.put("released", stategy.getPoolInstance().isReleased() ? "1" : "0");
return map;
}
});
}
TreeEncoder encoder = new TreeEncoder(treeNodeList);
encoder.setNeedRootNode(false);
return print("CacheTree", encoder);
}
/**
* 获取缓存策略以及缓存池信息
* @return
*/
public String getCacheStrategyInfo(){
CacheStrategy strategy = manager.getCacheStrategy(code);
Map<String, Object> strategyProperties = new HashMap<String, Object>();
BeanUtil.addBeanProperties2Map(strategy, strategyProperties);
XFormEncoder xEncoder = new XFormEncoder(CacheConstants.CACHESTRATEGY_XFORM_TEMPLET, strategyProperties);
String hitRate = CacheManager.getInstance().getCachePool(code).getHitRate() + "%";
List<Cacheable> cachedItems = manager.listItemsByStrategy(code);
long requests = strategy.getPoolInstance().getRequests();
List<IGridNode> temp = new ArrayList<IGridNode>();
String name = null;
for(Cacheable item : cachedItems){
int hit = item.getHit();
Object thisKey = item.getKey();
DefaultGridNode gridNode = new DefaultGridNode();
if(thisKey instanceof CacheableKey){
CacheableKey cKey = (CacheableKey) thisKey;
gridNode.getAttrs().put("id", cKey.getKey());
gridNode.getAttrs().put("key", cKey.getKey());
gridNode.getAttrs().put("remark", cKey.getRemark());
name = cKey.getName();
}else{
gridNode.getAttrs().put("id", thisKey);
gridNode.getAttrs().put("key", thisKey);
}
gridNode.getAttrs().put("code", code);
gridNode.getAttrs().put("name", name);
gridNode.getAttrs().put("hit", new Integer(hit));
gridNode.getAttrs().put("hitRate", ((requests == 0) ? 0 : (((float) hit / requests) * 100f)) + "%");
temp.add(gridNode);
}
StringBuffer template = new StringBuffer();
template.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?><grid version=\"2\"><declare sequence=\"true\">");
template.append("<column name=\"id\" mode=\"string\" caption=\"项Id\" display=\"none\"/>");
template.append("<column name=\"code\" mode=\"string\" caption=\"池code\" display=\"none\"/>");
template.append("<column name=\"key\" caption=\"键值\" mode=\"string\"/>");
if(name != null) {
template.append("<column name=\"name\" caption=\"名称\" mode=\"string\" align=\"center\"/>");
}
template.append("<column name=\"hit\" caption=\"点击次数\" mode=\"string\" align=\"center\"/>");
template.append("<column name=\"hitRate\" caption=\"点击率\" mode=\"string\" align=\"center\"/>");
template.append("<column name=\"remark\" caption=\"说明\" mode=\"string\" align=\"center\"/>");
template.append("</declare><data></data></grid>");
GridDataEncoder gEncoder = new GridDataEncoder(temp, XMLDocUtil.dataXml2Doc(template.toString()));
return print(new String[]{"CacheInfo", "CacheOption", "PageList", "PoolHitRate"},
new Object[]{xEncoder, gEncoder, createPageInfo(cachedItems.size()), hitRate});
}
//加入分页信息，只有一页。
private String createPageInfo(int totalRows){
int currentPageRows = totalRows;
int pagesize = totalRows + 1;
StringBuffer sb = new StringBuffer("<pagelist totalpages=\"1\" totalrecords=\"");
sb.append(totalRows).append("\" currentpage=\"1\" pagesize=\"").append(pagesize);
sb.append("\" currentpagerows=\"").append(currentPageRows).append("\" />");
return sb.toString();
}
/**
* 刷新缓存
* @return
*/
public String refresh(){
Cacheable item = manager.refresh(code, key);
if(item == null){
return printSuccessMessage("刷新成功，缓存项被清除出缓存。");
}else{
int hit = item.getHit();
long requests = manager.getCacheStrategy(code).getPoolInstance().getRequests();
String hitRate = ((requests == 0) ? 0 : (((float) hit / requests) * 100f)) + "%";
return print("CacheOption", "<row key=\"" + key + "\" hit=\"" + hit + "\" code=\"" + code + "\" hitRate=\"" + hitRate + "\"/>");
}
}
/**
* 查看详细的缓存项内容。对象XML格式展示
* @return
*/
public String viewCachedItem(){
Cacheable item = manager.getCachedItem(code, key);
if(item != null) {
String returnStr = "";
try{
String valueStr = BeanUtil.toXml(item.getValue());
returnStr = XMLDocUtil.dataXml2Doc(valueStr).asXML();
} catch(Exception e) {
returnStr = "缓存项(" + item.getValue() + ")内容生成XML不成功，无法查看！\n" + e.getMessage();
}
print(returnStr);
}
else {
print("该缓存项已经不存在，已经被清空或是已经被刷新！");
}
return XML;
}
/**
* 清空释放缓存池
* @return
*/
public String releaseCache(){
manager.releaseCache(code);
return printSuccessMessage();
}
/**
* 初始化缓存池
* @return
*/
public String initPool(){
manager.initPool(code);
return printSuccessMessage();
}
public CacheStrategy getCacheStrategy() {
return cacheStrategy;
}
public void setCode(String code) {
this.code = code;
}
public void setKey(String key) {
this.key = key;
}
}