public override void InterceptMethod(IInvocation invocation, MethodBase method, Attribute attribute)
{
CachingAttribute cachingAttribute = attribute as CachingAttribute;
if (cachingAttribute == null)
{
invocation.Proceed();
}
else
{
string cacheKey = _keyGenerator.CreateCacheKey(method, invocation.Arguments);
object cachedResult = CacheManager.Get(cacheKey);
if (cachedResult == null)
{
lock (method)
{
cachedResult = CacheManager.Get(cacheKey);
if (cachedResult == null)
{
invocation.Proceed();
cachedResult = invocation.ReturnValue;
CacheManager.Set(cacheKey, cachedResult, cachingAttribute.CacheTimeSpan);
}
}
}
invocation.ReturnValue = cachedResult;
}
}
/// <summary>
/// Implements the caching behavior of this handler.
/// </summary>
/// <param name="input"><see cref="IMethodInvocation"/> object describing the current call.</param>
/// <param name="getNext">delegate used to get the next handler in the current pipeline.</param>
/// <returns>Return value from target method, or cached result if previous inputs have been seen.</returns>
public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)
{
if (TargetMethodReturnsVoid(input))
{
return(getNext()(input, getNext));
}
object[] inputs = new object[input.Inputs.Count];
for (int i = 0; i < inputs.Length; ++i)
{
inputs[i] = input.Inputs[i];
}
string cacheKey = keyGenerator.CreateCacheKey(input.MethodBase, inputs);
object[] cachedResult = (object[])HttpRuntime.Cache.Get(cacheKey);
if (cachedResult == null)
{
IMethodReturn realReturn = getNext()(input, getNext);
if (realReturn.Exception == null)
{
AddToCache(cacheKey, realReturn.ReturnValue);
}
return(realReturn);
}
IMethodReturn cachedReturn = input.CreateMethodReturn(cachedResult[0], input.Arguments);
return(cachedReturn);
}
public IMethodReturn Invoke(IMethodInvocation input, GetNextInterceptionBehaviorDelegate getNext)
{
if (IsMethodCachable(input))
{
string regionName = _cacheRegionNameGenerator.CreateRegionName(
string.Format("{0}.{1}", input.Target.GetType().FullName, input.MethodBase.Name));
string cacheKey = _cacheKeyGenerator.CreateCacheKey(input.Inputs);
ICacheRegion cacheRegion = _cacheProvider.GetRegion(regionName);
return(cacheRegion.GetOrAdd(cacheKey,
() => getNext.Invoke().Invoke(input, getNext)
));
}
return(getNext()
.Invoke(input, getNext));
}
