private async Task TryCreateAsync()

in src/Microsoft.Azure.WebJobs.Host.Storage/Singleton/BlobLeaseDistributedLockManager.cs [254:318]
58 lines of code
10 McCabe index (conditional complexity)

        private async Task<bool> TryCreateAsync(BlobClient blobClient, CancellationToken cancellationToken)
        {
            bool isContainerNotFoundException = false;

            try
            {
                using (Stream stream = new MemoryStream(Encoding.UTF8.GetBytes(string.Empty)))
                {
                    await blobClient.UploadAsync(stream, cancellationToken: cancellationToken);
                }
                return true;
            }
            catch (RequestFailedException exception)
            {
                if (exception.Status == 404)
                {
                    isContainerNotFoundException = true;
                }
                else if (exception.Status == 409 ||
                            exception.Status == 412)
                {
                    // The blob already exists, or is leased by someone else
                    return false;
                }
                else
                {
                    throw;
                }
            }

            Debug.Assert(isContainerNotFoundException);

            var container = GetParentBlobContainerClient(blobClient);
            try
            {
                await container.CreateIfNotExistsAsync(cancellationToken: cancellationToken);
            }
            catch (RequestFailedException exception)
            when (exception.Status == 409 && string.Compare("ContainerBeingDeleted", exception.ErrorCode) == 0)
            {
                throw new RequestFailedException("The host container is pending deletion and currently inaccessible.");
            }

            try
            {
                using (Stream stream = new MemoryStream(Encoding.UTF8.GetBytes(string.Empty)))
                {
                    await blobClient.UploadAsync(stream, cancellationToken: cancellationToken);
                }

                return true;
            }
            catch (RequestFailedException exception)
            {
                if (exception.Status == 409 || exception.Status == 412)
                {
                    // The blob already exists, or is leased by someone else
                    return false;
                }
                else
                {
                    throw;
                }
            }
        }