Invalid paths using CloudFront create invalidation in C#

Question

I am trying to invalidate CloudFront objects in C#/.NET and gettign the following exception:

Your request contains one or more invalid invalidation paths.

My Function:

public bool InvalidateFiles(string[] arrayofpaths)
{
    for (int i = 0; i < arrayofpaths.Length; i++)
    {
        arrayofpaths[i] = Uri.EscapeUriString(arrayofpaths[i]);
    }

    try
    {
        Amazon.CloudFront.AmazonCloudFrontClient oClient = new Amazon.CloudFront.AmazonCloudFrontClient(MY_AWS_ACCESS_KEY_ID, MY_AWS_SECRET_KEY, Amazon.RegionEndpoint.USEast1);
        CreateInvalidationRequest oRequest = new CreateInvalidationRequest();
        oRequest.DistributionId = ConfigurationManager.AppSettings["CloudFrontDistributionId"];
        oRequest.InvalidationBatch = new InvalidationBatch
        {
            CallerReference = DateTime.Now.Ticks.ToString(),
            Paths = new Paths
            {
                Items = arrayofpaths.ToList<string>(),
                Quantity = arrayofpaths.Length
            }
        };

        CreateInvalidationResponse oResponse = oClient.CreateInvalidation(oRequest);
        oClient.Dispose();
    }
    catch
    {
        return false;
    }
    return true;
}

The array passed to the function contains a single Url like so:

images/temp_image.jpg

The image exists in the S3 bucket and loaded in the browser in the CloudFront URL.

What am I doing wrong?

Invalid invalidation! It's Invalidception! :D – Doug Dawson Dec 16 '14 at 15:18 — Doug Dawson, Dec 16 '14 at 15:18

score 4 · Answer 1 · answered Jul 19 '17 at 12:22

You invalidation file paths need a / at the front of the string.

If you are in doubt, you can log onto AWS Management, go to Cloudfront, select the distribution you are trying to invalidate files from, select Distribution setting and go to the Invalidations tab.

You can then create validations manually, which allows you to check that your paths are correct.

score 2 · Accepted Answer · edited Oct 08 '14 at 16:49

When you send invalidation request to some object in CloudFront, you still can see your picture in the browser in the CloudFront URL even when invalidation completed, because invalidation does not delete object from S3 bucket and with new request to this image from you browser CloudFront again cached these URl to images/temp_image.jpg in edge locations.

Invalidation of object will be seen, when you update image with the same name.

Your Invalidation function is correct.

score 2 · Answer 3 · answered Feb 06 '16 at 08:57

2

Have you tried adding the forward slash at the beginning of the path? (/images/temp_image.jpg)

answered Feb 06 '16 at 08:57

Marcus Cabnae

49
3

1

The documentation says otherwise. Quote, "A leading / is optional." https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Invalidation.html – jelder Nov 25 '19 at 15:46
The documentation has been updated to indicate that a leading slash is now required. "In the CloudFront console, you can omit the leading slash in the path, like this: images/image2.jpg. When you use the CloudFront API directly, invalidation paths must begin with a leading slash." Source: [Invalidating files](https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Invalidation.html) – Randy Burden May 31 '23 at 19:06

Invalid paths using CloudFront create invalidation in C#

3 Answers3