public async Task Consume(ConsumeContext <ExportFile> context)
{
try
{
var blobInfo = await blobStorage.GetFileInfo(context.Message.BlobId, context.Message.Bucket);
if (blobInfo == null)
{
await context.Publish <ExportFailed>(new
{
Id = context.Message.Id,
FileId = context.Message.BlobId,
Bucket = context.Message.Bucket,
Format = context.Message.Format,
Message = $"Cannot find blob with id {context.Message.BlobId} in bucket {context.Message.Bucket}."
});
return;
}
IChemicalExport exporter = null;
switch (context.Message.Format.ToLower())
{
case "sdf":
exporter = new SdfExport();
break;
case "csv":
exporter = new CsvExport();
break;
case "spl":
exporter = new SplExport();
break;
default:
await context.Publish <ExportFailed>(new
{
Id = context.Message.Id,
FileId = context.Message.BlobId,
Bucket = context.Message.Bucket,
Format = context.Message.Format,
Message = $"Queried export format is not supported.",
TimeStamp = DateTimeOffset.UtcNow
});
return;
}
var fileName = $"{Path.GetFileNameWithoutExtension(blobInfo.FileName)}-" +
//$"{DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ssZ")}" +
$".{context.Message.Format.ToLower()}";
if (exporter != null)
{
var blobId = NewId.NextGuid();
using (var stream = await blobStorage.OpenUploadStreamAsync(blobId, fileName, MimeType.GetFileMIME(context.Message.Format), context.Message.Bucket))
{
var recordsEnumerator = await provider.GetRecords(context.Message.BlobId, context.Message.Bucket);
await exporter.Export(recordsEnumerator, stream, context.Message.Properties, context.Message.Map);
await stream.FlushAsync();
await context.Publish <ExportFinished>(new
{
Id = context.Message.Id,
SourceBlobId = context.Message.BlobId,
ExportBlobId = blobId,
Filename = fileName,
Format = context.Message.Format,
ExportBucket = context.Message.Bucket,
UserId = context.Message.UserId,
TimeStamp = DateTimeOffset.UtcNow
});
}
}
}
catch (Exception e)
{
await context.Publish <ExportFailed>(new
{
Id = context.Message.Id,
FileId = context.Message.BlobId,
Bucket = context.Message.Bucket,
Format = context.Message.Format,
Message = $"File can not be exported. Details: {e.Message}",
TimeStamp = DateTimeOffset.UtcNow
});
}
}