/// <summary>
/// Persists a
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public async Task<SeriesDownload> PersistSeriesData(SeriesData data, string urlId, DateTimeOffset requestTime)
{
SeriesDownload result = new SeriesDownload() { SeriesID = data.SeriesID };
//assumes series is not already in storage
using (MemoryStream ms = new MemoryStream())
{
//write data to memory stream as csv
await WriteDataToMemoryStreamAsCsv(data, ms);
if (ms.Length > 0)
{
// persist memory stream as blob
ms.Position = 0;
CloudBlockBlob blob = await WriteMemoryStreamToBlobInGuidDirectory(data, ms, csa);
//persist table storage record
CloudTable tbl = csa.CreateCloudTableClient().GetTableReference(DiscoveryStorageTableNames.SeriesDownloads);
await tbl.ExecuteAsync(TableOperation.InsertOrReplace( //optimistic concurrency
new DataExportRequest(requestTime,
data.myMetadata.StartDate.ToUniversalTime(),
data.myMetadata.EndDate.ToUniversalTime(), blob.Uri.AbsoluteUri, data.SeriesID, data.myMetadata.ServURL)
));
//fill result object uri
result.Uri = blob.Uri.AbsoluteUri;
}
}
return result;
}
public async Task<MemoryStream> getCSVResultAsMemoryStream(SeriesData data)
{
SeriesDownload result = new SeriesDownload() { SeriesID = data.SeriesID };
//assumes series is not already in storage
using (MemoryStream ms = new MemoryStream())
{
//write data to memory stream as csv
await WriteDataToMemoryStreamAsCsv(data, ms);
if (ms.Length > 0)
{
// persist memory stream as blob
ms.Position = 0;
}
return ms;
}
}