/// <summary>
/// Copies the files in the <paramref name="sourceAsset"/> into into the <paramref name="destinationAsset"/> instance.
/// </summary>
/// <param name="sourceAsset">The <see cref="IAsset"/> instance that contains the asset files to copy.</param>
/// <param name="destinationAsset">The <see cref="IAsset"/> instance that receives asset files.</param>
/// <param name="destinationStorageCredentials">The <see cref="Microsoft.WindowsAzure.Storage.Auth.StorageCredentials"/> instance for the <paramref name="destinationAsset"/> Storage Account.</param>
/// <param name="cancellationToken">The <see cref="System.Threading.CancellationToken"/> instance used for cancellation.</param>
/// <returns>A <see cref="System.Threading.Tasks.Task"/> instance to copy the files in the <paramref name="sourceAsset"/> into into the <paramref name="destinationAsset"/> instance.</returns>
public static async Task CopyAsync(this IAsset sourceAsset, IAsset destinationAsset, StorageCredentials destinationStorageCredentials, CancellationToken cancellationToken)
{
if (sourceAsset == null)
{
throw new ArgumentNullException("sourceAsset", "The source asset cannot be null.");
}
if (destinationAsset == null)
{
throw new ArgumentNullException("destinationAsset", "The destination asset cannot be null.");
}
if (destinationStorageCredentials == null)
{
throw new ArgumentNullException("destinationStorageCredentials", "The destination storage credentials cannot be null.");
}
if (destinationStorageCredentials.IsAnonymous || destinationStorageCredentials.IsSAS)
{
throw new ArgumentException("The destination storage credentials must contain the account key credentials.", "destinationStorageCredentials");
}
if (!string.IsNullOrWhiteSpace(destinationStorageCredentials.AccountName) && !destinationStorageCredentials.AccountName.Equals(destinationAsset.StorageAccountName, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("The destination storage credentials does not belong to the destination asset storage account.", "destinationStorageCredentials");
}
MediaContextBase sourceContext = sourceAsset.GetMediaContext();
ILocator sourceLocator = null;
try
{
sourceLocator = await sourceContext.Locators.CreateAsync(LocatorType.Sas, sourceAsset, AccessPermissions.Read | AccessPermissions.List, AssetBaseCollectionExtensions.DefaultAccessPolicyDuration).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
IRetryPolicy retryPolicy = sourceContext.MediaServicesClassFactory.GetBlobStorageClientRetryPolicy().AsAzureStorageClientRetryPolicy();
BlobRequestOptions options = new BlobRequestOptions {
RetryPolicy = retryPolicy
};
CloudBlobContainer sourceContainer = new CloudBlobContainer(sourceAsset.Uri, new StorageCredentials(sourceLocator.ContentAccessComponent));
CloudBlobContainer destinationContainer = new CloudBlobContainer(destinationAsset.Uri, destinationStorageCredentials);
await CopyBlobHelpers.CopyBlobsAsync(sourceContainer, destinationContainer, options, cancellationToken).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
await CopyAssetFilesAsync(sourceAsset, destinationAsset, cancellationToken).ConfigureAwait(false);
}
finally
{
if (sourceLocator != null)
{
sourceLocator.Delete();
}
}
}
/// <summary>
/// Returns a <see cref="System.Threading.Tasks.Task<IAsset>"/> instance for a new <see cref="IAsset"/> with the file in <paramref name="sourceBlob"/>.
/// </summary>
/// <param name="assets">The <see cref="AssetBaseCollection"/> instance.</param>
/// <param name="sourceBlob">The <see cref="Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob"/> instance that contains the file to copy.</param>
/// <param name="storageCredentials">The <see cref="Microsoft.WindowsAzure.Storage.Auth.StorageCredentials"/> instance for the new asset to create.</param>
/// <param name="options">The <see cref="AssetCreationOptions"/>.</param>
/// <param name="cancellationToken">The <see cref="System.Threading.CancellationToken"/> instance used for cancellation.</param>
/// <returns>A <see cref="System.Threading.Tasks.Task<IAsset>"/> instance for a new <see cref="IAsset"/> with the file in <paramref name="sourceBlob"/>.</returns>
public static async Task <IAsset> CreateFromBlobAsync(this AssetBaseCollection assets, CloudBlockBlob sourceBlob, StorageCredentials storageCredentials, AssetCreationOptions options, CancellationToken cancellationToken)
{
if (assets == null)
{
throw new ArgumentNullException("assets", "The assets collection cannot be null.");
}
if (sourceBlob == null)
{
throw new ArgumentNullException("sourceBlob", "The source blob cannot be null.");
}
if (storageCredentials == null)
{
throw new ArgumentNullException("storageCredentials", "The destination storage credentials cannot be null.");
}
if (storageCredentials.IsAnonymous || storageCredentials.IsSAS)
{
throw new ArgumentException("The destination storage credentials must contain the account key credentials.", "destinationStorageCredentials");
}
MediaContextBase context = assets.MediaContext;
IAsset asset = await assets.CreateAsync(sourceBlob.Name, storageCredentials.AccountName, options, cancellationToken).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
IRetryPolicy retryPolicy = context.MediaServicesClassFactory.GetBlobStorageClientRetryPolicy().AsAzureStorageClientRetryPolicy();
BlobRequestOptions blobOptions = new BlobRequestOptions {
RetryPolicy = retryPolicy
};
CloudBlobContainer container = new CloudBlobContainer(asset.Uri, storageCredentials);
CloudBlockBlob blob = container.GetBlockBlobReference(sourceBlob.Name);
await CopyBlobHelpers.CopyBlobAsync(sourceBlob, blob, blobOptions, cancellationToken).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
IAssetFile assetFile = await asset.AssetFiles.CreateAsync(sourceBlob.Name, cancellationToken).ConfigureAwait(false);
assetFile.IsPrimary = true;
if (sourceBlob.Properties != null)
{
assetFile.ContentFileSize = sourceBlob.Properties.Length;
assetFile.MimeType = sourceBlob.Properties.ContentType;
}
await assetFile.UpdateAsync().ConfigureAwait(false);
return(asset);
}
