How to upload bundled and minified files to Windows Azure CDN

Question

I\'m using the ASP.NET MVC 4 bundling and minifying features in the Microsoft.AspNet.Web.Optimization namespace (e.g. @Styles.Render(\"~/content/static/css\")).

Answer 1

For @manishKungwani requested in previous comment. Just set UseCdn and then use the cdnHost overload to crate the bundle. I used this to put in an AWS CloudFront domain (xxx.cloudfront.net) but in hindsight it should have been named more generically to use with any other CDN provider.

public class CloudFrontScriptBundle : Bundle
{
    public CloudFrontScriptBundle(string virtualPath, string cdnHost = "")
        : base(virtualPath, null, new IBundleTransform[] { new JsMinify(), new CloudFrontBundleTransformer { CdnHost = cdnHost } })
    {
        ConcatenationToken = ";";
    }
}

public class CloudFrontStyleBundle : Bundle
{
    public CloudFrontStyleBundle(string virtualPath, string cdnHost = "")
        : base(virtualPath, null, new IBundleTransform[] { new CssMinify(), new CloudFrontBundleTransformer { CdnHost = cdnHost } })
    {
    }
}

public class CloudFrontBundleTransformer : IBundleTransform
{
    public string CdnHost { get; set; }

    static CloudFrontBundleTransformer()
    {
    }

    public virtual void Process(BundleContext context, BundleResponse response)
    {
        if (context.BundleCollection.UseCdn && !String.IsNullOrWhiteSpace(CdnHost))
        {
            var virtualFileName = VirtualPathUtility.GetFileName(context.BundleVirtualPath);
            var virtualDirectory = VirtualPathUtility.GetDirectory(context.BundleVirtualPath);

            if (!String.IsNullOrEmpty(virtualDirectory))
                virtualDirectory = virtualDirectory.Trim('~');

            var uri = string.Format("//{0}{1}{2}", CdnHost, virtualDirectory, virtualFileName);
            using (var hashAlgorithm = CreateHashAlgorithm())
            {
                var hash = HttpServerUtility.UrlTokenEncode(hashAlgorithm.ComputeHash(Encoding.Unicode.GetBytes(response.Content)));
                context.BundleCollection.GetBundleFor(context.BundleVirtualPath).CdnPath = string.Format("{0}?v={1}", uri, hash);
            }
        }
    }

    private static SHA256 CreateHashAlgorithm()
    {
        if (CryptoConfig.AllowOnlyFipsAlgorithms)
        {
            return new SHA256CryptoServiceProvider();
        }

        return new SHA256Managed();
    }
}