public override void OnActionExecuting(ActionExecutingContext ctx)
{
if (!_enabled)
{
return;
}
if (ctx.Controller.ViewData[DxaViewDataItems.DisableOutputCache] != null && (bool)ctx.Controller.ViewData[DxaViewDataItems.DisableOutputCache])
{
return;
}
if (IgnoreCaching(ctx.Controller))
{
return;
}
OutputCacheItem cachedOutput = null;
string cacheKey = CalcCacheKey(ctx);
PushCacheKey(ctx, cacheKey);
SiteConfiguration.CacheProvider.TryGet(cacheKey, CacheRegions.RenderedOutput, out cachedOutput);
if (cachedOutput != null)
{
ctx.Result = new ContentResult
{
Content = cachedOutput.Content,
ContentType = cachedOutput.ContentType,
ContentEncoding = cachedOutput.ContentEncoding
};
}
}
public override void OnResultExecuting(ResultExecutingContext ctx)
{
if (!_enabled)
{
return;
}
if (ctx.Result is ContentResult)
{
return;
}
if (IgnoreCaching(ctx.Controller))
{
SetDisablePageOutputCache(ctx, true);
}
string cacheKey = PopCacheKey(ctx);
if (cacheKey == null)
{
return;
}
OutputCacheItem cachedOutput;
SiteConfiguration.CacheProvider.TryGet(cacheKey, CacheRegions.RenderedOutput, out cachedOutput);
if (cachedOutput == null)
{
StringWriter cachingWriter = new StringWriter((IFormatProvider)CultureInfo.InvariantCulture);
TextWriter originalWriter = ctx.HttpContext.Response.Output;
ViewModel model = ctx.Controller.ViewData.Model as ViewModel;
ctx.HttpContext.Response.Output = cachingWriter;
SetCallback(ctx, (viewModel, commitCache) =>
{
ctx.HttpContext.Response.Output = originalWriter;
string html = cachingWriter.ToString();
ctx.HttpContext.Response.Write(html);
if (!commitCache)
{
return;
}
// since our model is cached we need to make sure we decorate the markup with XPM markup
// as this is done outside the child action normally on a non-cached entity.
// n.b. we should only do this if our text/html content
if (ctx.HttpContext.Response.ContentType.Equals("text/html"))
{
if (model != null && WebRequestContext.IsPreview)
{
html = Markup.TransformXpmMarkupAttributes(html);
}
html = Markup.DecorateMarkup(new MvcHtmlString(html), model).ToString();
}
OutputCacheItem cacheItem = new OutputCacheItem
{
Content = html,
ContentType = ctx.HttpContext.Response.ContentType,
ContentEncoding = ctx.HttpContext.Response.ContentEncoding
};
// we finally have a fully rendered model's html that we can cache to our region
SiteConfiguration.CacheProvider.Store(cacheKey, CacheRegions.RenderedOutput, cacheItem);
if (viewModel != null)
{
Log.Trace($"ViewModel={viewModel.MvcData} added to DxaOutputCache.");
}
});
}
}
