Using CDN setting with existing full image urls in database causes bug

[S3j5b0]

Umbraco 10.8.6

Bug summary

I have a umbraco 10 installation. In the [umbracoMediaVersion] table in my database, some urls are fully qualified to my blob storage, and some are relative. But, we need the images to go through the iamgeprocessor

So I tried using the cdn url provider mode that I could read about in the docs. THis however results in url's of images of publishedcontents end up looking this this:

[cdnurl.com]/[blobstorage.az]/path/to/image

it concatenates both my cdn url and blob storage, which is of course not a very usefull url.

Specifics

Running locally, I have this step for my cdn settings:

          umbBuilder.AddCdnMediaUrlProvider(options =>
          {
              options.Url = new Uri("https://localhost:44314/");
              options.RemoveMediaFromPath = false;
          })

some other appsettings that might be relevant might look like this:

            "RequestHandler": {
                "addTrailingSlash": false
            },
            "WebRouting": {
                "TrySkipIisCustomErrors": true,
                "InternalRedirectPreservesTemplate": false,
                "DisableAlternativeTemplates": false,
                "ValidateAlternativeTemplates": false,
                "DisableFindContentByIdPath": false,
                //"UmbracoApplicationUrl": "",
                "UrlProviderMode": "Absolute"
            },

Steps to reproduce

Install umbraco 10.8.6

• setup images with blob storage, such that the database contains full urls
• add AddCdnMediaUrlProvider in startup .cs
• load images, and notice that full y qualified urls are simply concatenated with the given cdn url

Expected result / actual result

I would expect the storage provider to be able to determine that it should remove the domain already in the database, and render the image with the cdn domain instead

[github-actions[bot]]

Hi there @S3j5b0!

Firstly, a big thank you for raising this issue. Every piece of feedback we receive helps us to make Umbraco better.

We really appreciate your patience while we wait for our team to have a look at this but we wanted to let you know that we see this and share with you the plan for what comes next.

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