Edit blob Uri from Guid to filename

Ben

Vote:

Hi,

I wrote some code so when an editor uploads an image different sizes of the uploaded image are created and save to a blob in aws, in the format epi.fx.blob://[provider]/[container]/[blob]]

While I can change the container portion, I am having problems figuring out how to change the blob portion of uri which is the image, to the image name plus the size it was changed to.

Any ideas on how to do this?

#207177

Sep 11, 2019 22:30

Bartosz Sekula

Vote:

Ben, could you please share the code?

#207506

Sep 23, 2019 12:00

Ben

Vote:

Hey Bartosz,

private void CreateImageInBlob(IContentMedia contentImage, string imageInfo, Stream resizedImages)
{
    var imageBlobContainer = _imageFile.BinaryDataContainer.Scheme + "://default/" + _imageFileName; //blob container folder name

    var blob = ServiceLocator.Current.GetInstance<IBlobFactory>().CreateBlob(new Uri(imageBlobContainer), Path.GetExtension(_imageFile.Name));

    //some code to rename image blob from GUID to image name _ image size 
        
    blob.Write(resizedImages); //image blob is created
            
    contentImage.BinaryData = blob;
    _contentRepository.Save(contentImage, SaveAction.Publish);
}

Is this even possible? If not, what are your recomendation to get to simillar suitable solution.

#207513

Edited, Sep 23, 2019 16:57

Joshua Folkerts

Vote:

I was just looking at the source code last week and the blob provider creates a new Guid.NewGuid() for the filename and it is not overwritable unfortunately. From their source

public static Uri NewBlobIdentifier(Uri container, string extension)
{
    Validator.ThrowIfNull("container", container);
    Validator.ThrowIfNullOrEmpty("extension", extension);
    ValidateIdentifier(container, false);
    if (Path.GetExtension(extension) != extension)
    {
        throw new ArgumentException("Not a valid file extension", extension);
    }
    return new Uri(container, container.AbsolutePath + "/" + GuidToUriString(Guid.NewGuid()) + extension);
}

#207514

Sep 23, 2019 17:25

Ben

Vote:

Yep, I notice that the NewBlobIdentifier function is called when writing to a newly created blob.

Since it was just on creation I was hoping that the name would be rewritable after, if there is no other imput I guess that is the answer, thanks.

#207516

Sep 23, 2019 18:06