ListBlobsSegmentedAsync keeps returning the same continuation token

Question

My app uses ListBlobsSegmentedAsync and the following loop never finishes:

    // List blobs existing in container
    HashSet<string> existingBlobNames = new HashSet<string>();
    BlobResultSegment segment;
    do
    {
        segment = await container.ListBlobsSegmentedAsync(null, cancellationToken).ConfigureAwait(false);
        foreach (IListBlobItem blobListItem in segment.Results)
        {
            CloudBlockBlob blob = blobListItem as CloudBlockBlob;
            if (blob != null)
            {
                existingBlobNames.Add(blob.Name);
            }
        }
    }
    while (segment.ContinuationToken != null);

It always returns exactly the same ContinuationToken & no results.

ZakiMa · Accepted Answer · 2019-03-22 17:32:04Z

This was me who ported this logic from another service which worked successfully for years. Turned out that service always had the same bug. But since there could have been at most 10 blobs in a container it never hit it.

This code needs actually to pass a continuation token =) Here is the corrected version.

        BlobContinuationToken continuationToken = null;
        do
        {
            BlobResultSegment segment = await container.ListBlobsSegmentedAsync(continuationToken, cancellationToken).ConfigureAwait(false);
            foreach (IListBlobItem blobListItem in segment.Results)
            {
                CloudBlockBlob blob = blobListItem as CloudBlockBlob;
                if (blob != null)
                {
                    existingBlobNames.Add(blob.Name);
                }
            }

            continuationToken = segment.ContinuationToken;
        }
        while (continuationToken != null);

Collectives™ on Stack Overflow

ListBlobsSegmentedAsync keeps returning the same continuation token

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related