public override async Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
{
if (_contextProvider.GetContexts().Count > 0)
{
FragmentResponseFilterContext filterContext = new FragmentResponseFilterContext
{
ResponseHtml = Encoding.Default.GetString(buffer.Take(count).ToArray()),
FlushIndex = FlusIndex,
BodyStream = BodyStream
};
_responseFilters?.ForEach(f => f.OnRendering(filterContext));
byte[] responseBytes = Encoding.Default.GetBytes(filterContext.ResponseHtml);
_logger.Info($"Chunk size : {responseBytes.Length}");
await BodyStream.WriteAsync(responseBytes, offset, responseBytes.Length, cancellationToken);
await FlushAsync(cancellationToken);
_responseFilters?.ForEach(f => f.OnRendered(filterContext));
}
else
{
await BodyStream.WriteAsync(buffer, offset, count, cancellationToken);
}
}
public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
{
output.TagName = "div";
Fragment fragment = await _fragmentResolver.ResolveAsync(Name);
var fragmentOptions = _fragmentOptionsProvider.GetFragmentOptions(fragment);
var fragmentContext = new FragmentContext
{
Fragment = fragment,
OutputStream = ViewContext.HttpContext.Response.Body,
Model = Model,
FragmentOptions = fragmentOptions
};
_fragmentContextProvider.AddContext(fragmentContext);
_fragmentLogger.Info($"Executing fragment {Name}. Model : {JsonConvert.SerializeObject(fragmentContext.Model)}");
var placeHolderViewName = fragmentOptions?.PlaceHolderViewName;
if (fragmentOptions?.IsSync == true || fragmentOptions?.IsSyncOnAjax == true && IsAjaxRequest(ViewContext.HttpContext.Request))
{
output.SuppressOutput();
throw new NotImplementedException("Sync fragments are not implemented yet.");
}
else
{
fragmentContext.PlaceHolderId = Guid.NewGuid().ToString();
var placeHolderHtml = string.IsNullOrEmpty(placeHolderViewName) ? await fragment.GetPlaceHolderHtmlAsync() : await _viewRenderer.RenderAsync(placeHolderViewName, null);
if (string.IsNullOrEmpty(placeHolderHtml) == false)
{
output.Content.SetHtmlContent(placeHolderHtml);
}
output.Attributes.SetAttribute(Constants.HtmlIdAttribute, fragmentContext.PlaceHolderId);
output.TagMode = TagMode.StartTagAndEndTag;
}
}
