public async Task <TData> GetAsync <TData>(CacheContentType type, string parameter = null)
{
await _cacheLock.WaitAsync();
try
{
if (!_dataProviders.TryGetValue(type, out var dataProvider))
{
throw new NoDataProviderException($"{type} data provider doesn't exist in cache.");
}
if (!_items.ContainsKey(new Tuple <CacheContentType, string>(type, parameter)))
{
var data = await FetchDataFromProvider(dataProvider, parameter, null);
_items.TryAdd(new Tuple <CacheContentType, string>(type, parameter), new CacheItem(data));
_cacheItemsAdded++;
_logger.Info($"Cache data added ({type})");
ApplyPatches(type, data);
return((TData)data);
}
var cachedItem = _items[new Tuple <CacheContentType, string>(type, parameter)];
var lifetimeAttribute = type.GetEnumMemberAttribute <CacheLifetimeAttribute>(type);
if ((DateTime.Now - cachedItem.UpdateTime).TotalMinutes >= lifetimeAttribute.Lifetime)
{
var data = await FetchDataFromProvider(dataProvider, parameter, cachedItem.Data);
if (data != cachedItem.Data)
{
ApplyPatches(type, data);
cachedItem.Update(data);
_logger.Info($"Cache data updated ({type})");
}
_cacheItemsUpdated++;
}
else
{
_cacheItemsHit++;
}
return((TData)cachedItem.Data);
}
finally
{
_cacheLock.Release();
}
}
