private void cacheAction(String cacheName, String cacheKey, Controller controller) {
HttpServletRequest request = controller.getRequest();
Map<String, Object> cacheData = new HashMap<String, Object>();
for (Enumeration<String> names = request.getAttributeNames(); names.hasMoreElements(); ) {
String name = names.nextElement();
cacheData.put(name, request.getAttribute(name));
}
cacheData.put(renderKey, new RenderInfo(controller.getRender())); // cache RenderInfo
CacheKit.put(cacheName, cacheKey, cacheData);
}
public final void intercept(Invocation inv) {
Controller controller = inv.getController();
String cacheName = buildCacheName(inv, controller);
String cacheKey = buildCacheKey(inv, controller);
Map<String, Object> cacheData = CacheKit.get(cacheName, cacheKey);
if (cacheData == null) {
Lock lock = getLock(cacheName);
lock.lock(); // prevent cache snowslide
try {
cacheData = CacheKit.get(cacheName, cacheKey);
if (cacheData == null) {
inv.invoke();
cacheAction(cacheName, cacheKey, controller);
return;
}
} finally {
lock.unlock();
}
}
useCacheDataAndRender(cacheData, controller);
}