public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
{
if (null == this.Context)
{
throw new System.ArgumentException("<optimizedresource> tag requires a valid OptimizationContext. Have you forgotten to set the 'context' attribute ?");
}
string cacheKey = $"{this.Context.Identifier}+{this.Output}+{(string)this.Extension}";
OptimizationResult optimizationResult = await this.Cache.GetOrCreateAsync(cacheKey, async entry =>
{
return(await this.OptimizationManager.OptimizeAsync(this.Context, this.Extension));
});
output.SuppressOutput();
IOptimizationResultTagBuilder tagBuilder = this.TagBuilderFactory.GetBuilder(this.Extension);
foreach (var asset in optimizationResult)
{
HtmlContentBuilder assetContentBuilder = new HtmlContentBuilder();
await tagBuilder.PopulateHtmlTagAsync(this, context.AllAttributes, asset, assetContentBuilder);
output.PostElement.AppendHtml(assetContentBuilder);
// if the asset is written out to a static file
// we can safely dispose the asset (the content) sine it will be served from a static file
if (OptimizationTagOutput.StaticFile == this.Output)
{
await asset.DisposeAsync();
}
}
}
protected virtual async Task RenderAssetAsync(IOptimizationResultTagBuilder optimizationResultTagBuilder, RendererTagAttributes attributes, Asset asset, string extension, IHtmlContentBuilder htmlContentBuilder)
{
TagBuilderOptions options = new TagBuilderOptions(extension, OptimizationTagOutput.Tag);
await optimizationResultTagBuilder.PopulateHtmlTagAsync(options, attributes, asset, htmlContentBuilder);
}
