protected async Task TryGetRevalidatedResult(IHandlerContextWithResult handlerContext, HttpRequestMessage request, HttpResponseMessage response)
{
if (!Enabled)
{
return;
}
var context = GetContext(handlerContext);
var result = (CacheEntry)context.Items["CacheHandlerCachedItem"];
var meta = CachingHelpers.CreateResponseMetadata(result, request, response, context);
if (result == null || !context.RevalidateValidator(context, meta))
{
return;
}
if (!result.IsEmpty && result.Value != null)
{
result.UpdateResponseMetadata(request, response, context);
context.ResultInspector?.Invoke(result);
}
else
{
result = CacheEntry.Empty;
}
if (result.IsEmpty)
{
var missedResult = await context.HandlerRegister.OnMiss(context);
if (missedResult.IsDirty)
{
result = new CacheEntry(missedResult.Value, null);
}
}
if (!result.IsEmpty)
{
var hitResult = await context.HandlerRegister.OnHit(context, result.Value);
if (hitResult.IsDirty && !(bool)hitResult.Value)
{
handlerContext.Result = result.Value;
}
}
context.Items["CacheHandlerCachedItem"] = result;
}
public void UpdateResponseMetadata(HttpRequestMessage request, HttpResponseMessage response, ICacheMetadata metadata)
{
Metadata = CachingHelpers.CreateResponseMetadata(Value, request, response, metadata);
}
public CacheEntry(object result, HttpRequestMessage request, HttpResponseMessage response, ICacheMetadata metadata)
: this(result, CachingHelpers.CreateResponseMetadata(result, request, response, metadata))
{
}