public static AspectF CacheRetry <TReturnType>(this AspectF aspect,
ICacheManager cacheResolver,
string key, int cacheTime)
{
return(aspect.Combine((work) =>
{
try
{
Cache <TReturnType>(aspect, cacheResolver, key, cacheTime, work, cached => cached);
}
catch (Exception x)
{
//logger.LogException(x);
System.Threading.Thread.Sleep(1000);
//Retry
try
{
Cache <TReturnType>(aspect, cacheResolver, key, cacheTime, work, cached => cached);
}
catch (Exception ex)
{
//logger.LogException(ex);
throw ex;
}
}
}));
}
public static AspectF CacheList <TItemType>(this AspectF aspect,
ICacheManager cacheResolver, string listCacheKey, Func <TItemType, string> getItemKey, Func <List <int>, List <TItemType> > getByListId, int cacheTime = 0)
where TItemType : BaseEntity
{
return(aspect.Combine((work) =>
{
var workDelegate = aspect.WorkDelegate as Func <List <TItemType> >;
// Thay work delegate hiện tại bằng work delegate mới để xử lý lấy dữ liệu chi tiết & lưu cache item
Func <List <TItemType> > newWorkDelegate = () =>
{
List <TItemType> collection = workDelegate();
var cacheKeys = new List <string>();
var dicCacheKeys = new Dictionary <string, int>();
var dicIds = new Dictionary <int, string>();
foreach (TItemType item in collection)
{
string key = getItemKey(item);
cacheKeys.Add(key);
dicCacheKeys.Add(key, item.Id);
dicIds.Add(item.Id, key);
}
var cachedData = cacheResolver.MGet <TItemType>(cacheKeys);
var newIds = cachedData.Where(i => i.Value == null).Select(item => dicCacheKeys[item.Key]).ToList();
if (newIds.Count > 0)
{
var newData = getByListId(newIds);
foreach (var item in newData)
{
string key = getItemKey(item);
cachedData[key] = item;
cacheResolver.Set(key, item);
}
}
return collection.Select(item => cachedData[dicIds[item.Id]]).ToList();
};
aspect.WorkDelegate = newWorkDelegate;
// Get the collection from cache or real source. If collection is returned
// from cache, resolve each item in the collection from cache
Cache <List <TItemType> >(aspect, cacheResolver, listCacheKey, cacheTime, work,
cached =>
{
// Kiểm tra nếu có 1 item nào đó không tồn tại trong cache thì lấy lại cache từ đầu
var cacheKeys = cached.Select(getItemKey).ToList();
if (cacheResolver.MExists(cacheKeys).Any(exist => exist == false))
{
return default(List <TItemType>);
}
return cached;
});
}));
}
private static void Cache <TReturnType>(AspectF aspect, ICacheManager cacheResolver,
string key, int cacheTime, Action work, Func <TReturnType, TReturnType> foundInCache)
{
var cachedData = cacheResolver.Get <TReturnType>(key);
if (cachedData == null)
{
GetListFromSource <TReturnType>(aspect, cacheResolver, key, cacheTime);
}
else
{
// Give caller a chance to shape the cached item before it is returned
TReturnType cachedType = foundInCache(cachedData);
if (cachedType == null)
{
GetListFromSource <TReturnType>(aspect, cacheResolver, key, cacheTime);
}
else
{
aspect.WorkDelegate = new Func <TReturnType>(() => cachedType);
}
}
work();
}
public static AspectF Cache <TReturnType>(this AspectF aspect,
ICacheManager cacheResolver, string key, int cacheTime = 0)
{
return(aspect.Combine((work) =>
{
Cache <TReturnType>(aspect, cacheResolver, key, cacheTime, work, cached => cached);
}));
}
private static void GetListFromSource <TReturnType>(AspectF aspect, ICacheManager cacheResolver, string key, int cacheTime)
{
var workDelegate = aspect.WorkDelegate as Func <TReturnType>;
TReturnType realObject = workDelegate();
cacheResolver.Set(key, realObject, cacheTime);
workDelegate = () => realObject;
aspect.WorkDelegate = workDelegate;
}
