public object GetItem(string key, BaseCacheItemCreator creator, params object[] args)
{
object result = null;
ICacheDataConverter converter = GetDataConverter(creator);
var distributeKey = GetDistributeKey(creator, key);
if (GetCacheInstance(distributeKey, converter, out var cacheObject))
{
return(cacheObject);
}
try
{
result = creator.Create(key, args);
TkDebug.AssertNotNull(result, string.Format(ObjectUtil.SysCulture,
"类型为{0}缓存对象创建者没有创建缓存对象，请确认",
creator.GetType()), creator);
}
catch (Exception ex)
{
TkDebug.ThrowToolkitException(string.Format(ObjectUtil.SysCulture,
"类型为{0}缓存对象创建者在创建对象时发生例外，请检查原因",
creator.GetType()), ex, creator);
}
ICacheDependency dependency = CacheUtil.SearchDependency(result);
IDistributeCacheDependency distributeDependency = dependency as IDistributeCacheDependency;
TkDebug.AssertNotNull(distributeDependency,
$"附着的ICacheDependency（类型为{dependency.GetType()}）不支持IDistributeCacheDependency", dependency);
AddCacheInstance(distributeKey, result, converter, distributeDependency,
creator.Attribute.ForceCache);
return(result);
}
private void CreateDependency()
{
var config = DependencyObject.ReadJsonFromFactory <IConfigCreator <IDistributeCacheDependency> >(
CacheDependencyStoreConfigFactory.REG_NAME);
Dependency = config.CreateObject();
}
public DistributeData(ICacheDataConverter dataConverter, object cacheObject,
IDistributeCacheDependency dependency)
{
CacheObject = dataConverter.Convert(cacheObject);
Dependency = dependency;
object storedObject = dependency.CreateStoredObject();
DependencyObject = new DependencyStore {
StoreObject = storedObject
}.WriteJson();
}
private void AddCacheInstance(string key, object instance, ICacheDataConverter converter,
IDistributeCacheDependency dependency, bool useCache)
{
bool canCache = useCache || (BaseAppSetting.Current != null &&
BaseAppSetting.Current.UseCache);
if (canCache)
{
DistributeData data = new DistributeData(converter, instance, dependency);
var expiration = dependency.GetAbsoluteExpiration();
DateTimeOffset absolute = expiration ?? new DateTimeOffset(DateTime.Today.AddDays(1));
DistributedCacheEntryOptions options = new DistributedCacheEntryOptions
{
AbsoluteExpiration = absolute
};
SetCacheData(key, data, options);
}
}
