private Task <IIngestManifestAsset> CreateAsync(IIngestManifest ingestManifest, IAsset asset, CancellationToken token, Action <IngestManifestAssetData> continueWith)
{
IngestManifestCollection.VerifyManifest(ingestManifest);
IMediaDataServiceContext dataContext = MediaContext.MediaServicesClassFactory.CreateDataServiceContext();
var data = new IngestManifestAssetData
{
ParentIngestManifestId = ingestManifest.Id
};
dataContext.AddObject(IngestManifestAssetCollection.EntitySet, data);
dataContext.AttachTo(AssetCollection.AssetSet, asset);
dataContext.SetLink(data, "Asset", asset);
MediaRetryPolicy retryPolicy = this.MediaContext.MediaServicesClassFactory.GetSaveChangesRetryPolicy();
Task <IIngestManifestAsset> task = retryPolicy.ExecuteAsync <IMediaDataServiceResponse>(() => dataContext.SaveChangesAsync(data))
.ContinueWith <IIngestManifestAsset>(t =>
{
t.ThrowIfFaulted();
token.ThrowIfCancellationRequested();
IngestManifestAssetData ingestManifestAsset = (IngestManifestAssetData)t.Result.AsyncState;
continueWith(ingestManifestAsset);
return(ingestManifestAsset);
}, TaskContinuationOptions.ExecuteSynchronously);
return(task);
}
/// <summary>
/// Creates the locator async.
/// </summary>
/// <param name="locatorId">The locator Id.</param>
/// <param name="locatorType">Type of the locator.</param>
/// <param name="asset">The asset.</param>
/// <param name="accessPolicy">The access policy.</param>
/// <param name="startTime">The start time.</param>
/// <param name="name">The name.</param>
/// <returns>A function delegate that returns the future result to be available through the Task<ILocator>.</returns>
public Task <ILocator> CreateLocatorAsync(string locatorId, LocatorType locatorType, IAsset asset, IAccessPolicy accessPolicy, DateTime?startTime, string name = null)
{
AccessPolicyBaseCollection.VerifyAccessPolicy(accessPolicy);
AssetCollection.VerifyAsset(asset);
AssetData assetData = (AssetData)asset;
LocatorData locator = new LocatorData
{
AccessPolicy = (AccessPolicyData)accessPolicy,
Asset = assetData,
Type = (int)locatorType,
StartTime = startTime,
Name = name
};
if (locatorId != null)
{
locator.Id = LocatorData.NormalizeLocatorId(locatorId);
}
locator.SetMediaContext(this.MediaContext);
IMediaDataServiceContext dataContext = this.MediaContext.MediaServicesClassFactory.CreateDataServiceContext();
dataContext.AttachTo(AssetCollection.AssetSet, asset);
dataContext.AttachTo(AccessPolicyBaseCollection.AccessPolicySet, accessPolicy);
dataContext.AddObject(LocatorSet, locator);
dataContext.SetLink(locator, AccessPolicyPropertyName, accessPolicy);
dataContext.SetLink(locator, AssetPropertyName, asset);
MediaRetryPolicy retryPolicy =
this.MediaContext.MediaServicesClassFactory.GetSaveChangesRetryPolicy(dataContext as IRetryPolicyAdapter);
return(retryPolicy.ExecuteAsync <IMediaDataServiceResponse>(() => dataContext.SaveChangesAsync(locator))
.ContinueWith <ILocator>(
t =>
{
t.ThrowIfFaulted();
assetData.InvalidateLocatorsCollection();
return (LocatorData)t.Result.AsyncState;
},
TaskContinuationOptions.ExecuteSynchronously));
}