/// <summary>
/// Deletes an upload.
/// </summary>
/// <param name="teantId">Tenant identifier.</param>
/// <param name="uploadId">Upload identifier.</param>
/// <param name="storageHierarchy">Location of upload. E.g. { "Uploads" > "Users" }.</param>
/// <param name="unitOfWork">Unit of work.</param>
public void Delete(long tenantId, long uploadId, List <string> storageHierarchy, IUnitOfWork unitOfWork = null)
{
// If we don't have a unit of work in place, create one now so that we can rollback all changes in case of failure
IUnitOfWork localUnitOfWork = unitOfWork == null?_unitOfWorkFactory.CreateUnitOfWork() : null;
// Try to delete upload
try
{
// Get main upload details from upload repository
Upload upload = _uploadRepository.Read(tenantId, uploadId, unitOfWork ?? localUnitOfWork);
// Delete record of upload
_uploadRepository.Delete(tenantId, uploadId, unitOfWork ?? localUnitOfWork);
// Delete upload in storage
_storageService.Delete(upload, storageHierarchy, unitOfWork ?? localUnitOfWork);
// Commit work if local unit of work in place
if (localUnitOfWork != null)
{
localUnitOfWork.Commit();
}
}
catch
{
if (localUnitOfWork != null)
{
localUnitOfWork.Rollback();
}
throw;
}
finally
{
if (localUnitOfWork != null)
{
localUnitOfWork.Dispose();
}
}
}
/// <summary>
/// Deletes an upload from underlying storage.
/// </summary>
/// <param name="upload">The upload to delete from underlying storage.</param>
/// <param name="storageHierarchy">Location of created upload. E.g. { "Uploads" > "Users" }.</param>
/// <param name="unitOfWork">Unit of work.</param>
public void Delete(Upload upload, List <string> storageHierarchy, IUnitOfWork unitOfWork = null)
{
// Get Azure storage configuration
AzureStorageConfiguration configuration = _azureConfigurationService.GetStorageConfiguration(upload, storageHierarchy);
// Retrieve storage account from connection string
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(configuration.ConnectionString);
// Create the blob client
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
// Retrieve reference to a previously created container
CloudBlobContainer blobContainer = blobClient.GetContainerReference(configuration.BlobContainerName);
// Retrieve reference to blob
CloudBlockBlob blockBlob = blobContainer.GetBlockBlobReference(configuration.BlobPath);
// If block blob exists, delete it
if (blockBlob.ExistsAsync().Result)
{
blockBlob.DeleteAsync().Wait();
}
}
