Sometimes get asset id null

[mobius127]

At the previous stage of encoding, I have to copy the video form temp container an create a new Asset before encoding.

At this point, sometimes the new asset has null Id. This is my code:

`
public string CopyFileToMediaService(VideoModel video, string fileName)
{
try
{
if (video == null)
{
return null;
}

    var assetName = string.Format(CultureInfo.InvariantCulture, "NewAsset_{0}_{1}", video.VideoModelId, video.Name);

    IAsset newAsset = null;

    try
    {
        newAsset = this.mediaContext.Assets.Create(assetName, AssetCreationOptions.None);
    }
    catch (Exception ex)
    {
        this.logger.Error(string.Format(CultureInfo.InvariantCulture, ErrorMessages.EXCEPTION_ERROR, ex.StackTrace));

        Thread.Sleep(1000);
        newAsset = this.mediaContext.Assets.Create(assetName, AssetCreationOptions.None);
    }

            
    IAccessPolicy writePolicy = this.mediaContext.AccessPolicies.Create("writePolicy", TimeSpan.FromHours(24), AccessPermissions.Write);
    ILocator destinationLocator = this.mediaContext.Locators.CreateLocator(LocatorType.Sas, newAsset, writePolicy);

    string destinationContainerName = (new Uri(destinationLocator.Path)).Segments[1];
    CloudBlobClient destinationBlobClient = this.destinationStorageAccount.CreateCloudBlobClient();
    CloudBlobContainer assetContainer = destinationBlobClient.GetContainerReference(destinationContainerName);

    if (assetContainer.CreateIfNotExists())
    {
        assetContainer.SetPermissions(new BlobContainerPermissions
        {
            PublicAccess = BlobContainerPublicAccessType.Blob
        });
    }

    var sourceBlob = this.sourceContainer.GetBlockBlobReference(fileName);
    var assetFile = newAsset.AssetFiles.Create((sourceBlob as ICloudBlob).Name);

    this.CopyBlob(sourceBlob, assetContainer);

    sourceBlob.FetchAttributes();

    assetFile.ContentFileSize = (sourceBlob as ICloudBlob).Properties.Length;
    assetFile.Update();

    destinationLocator.Delete();
    writePolicy.Delete();

    sourceBlob.Delete();

    newAsset.Update();

    return newAsset.Id;
}
catch (Exception ex)
{
    this.logger.Error(string.Format(CultureInfo.InvariantCulture, ErrorMessages.EXCEPTION_ERROR, ex.StackTrace));
    return null;
}

}

`

`

private void CopyBlob(ICloudBlob sourceBlob, CloudBlobContainer destinationContainer)
{
var signature = sourceBlob.GetSharedAccessSignature(new SharedAccessBlobPolicy
{
Permissions = SharedAccessBlobPermissions.Read,
SharedAccessExpiryTime = DateTime.UtcNow.AddHours(24)
});

CloudBlockBlob destinationBlob = destinationContainer.GetBlockBlobReference(sourceBlob.Name);

if (destinationBlob.Exists())
{
    Console.WriteLine(string.Format("Destination blob '{0}' already exists. Skipping.", destinationBlob.Uri));
}
else
{
    try
    {
        Console.WriteLine(string.Format("Copy blob '{0}' to '{1}'", sourceBlob.Uri, destinationBlob.Uri));

        using (Task task = destinationBlob.StartCopyAsync(new Uri(sourceBlob.Uri.AbsoluteUri + signature)))
        {
            task.Wait();
        }

        destinationBlob.FetchAttributes();

        while (destinationBlob.CopyState.Status == CopyStatus.Pending)
        {
            Thread.Sleep(50);
            destinationBlob.FetchAttributes();
        }

        if (destinationBlob.CopyState.Status != CopyStatus.Success)
        {
            throw new Exception("Copy failed: " + destinationBlob.CopyState.Status);
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine(string.Format("Error copying blob '{0}': {1}", sourceBlob.Name, ex.Message));
    }
}

}

`