public async Task InvokeAsync(
HttpContext context,
IAssetStorage assetStore)
{
Guid id = Guid.Parse((string)context.GetRouteValue("id"));
Asset asset = await assetStore.GetAssetAsync(id);
using (Stream assetStream = await assetStore.DownloadAsync(id))
{
context.Response.GetTypedHeaders().CacheControl = new CacheControlHeaderValue()
{
Public = true, MaxAge = TimeSpan.FromDays(30)
};
context.Response.GetTypedHeaders().ETag = new EntityTagHeaderValue($"\"{asset.Hash}\"");
context.Response.ContentType = asset.MimeType;
context.Response.ContentLength = assetStream.Length;
await assetStream.CopyToAsync(context.Response.Body);
}
}