public async Task <PayloadFile> Download(string payload, string name)
{
Guard.Against.NullOrWhiteSpace(payload, nameof(payload));
Guard.Against.NullOrWhiteSpace(name, nameof(name));
if (!PayloadId.TryParse(payload, out PayloadId payloadId))
{
throw new ArgumentException($"Invalid Payload ID received: {payload}");
}
return(await Policy <PayloadFile>
.Handle <Exception>()
.WaitAndRetryAsync(3, (r) => TimeSpan.FromSeconds(r * 1.5f), (data, retryCount, context) =>
{
_logger.Log(LogLevel.Error, "Failed to download file {0} from Payloads Service {1}: {2}", name, payload, data.Exception);
})
.ExecuteAsync(async() =>
{
PayloadFile file = new PayloadFile();
using (var ms = new MemoryStream())
{
var details = await _payloadsClient.DownloadFrom(payloadId, name, ms);
file.Data = ms.ToArray();
file.Name = details.Name;
}
_logger.Log(LogLevel.Information, "File {0} successfully downloaded from {1}.", name, payloadId);
return file;
}).ConfigureAwait(false));
}
private async Task DownloadFromPayloadsService(OutputJob job)
{
int failureCount = 0;
foreach (var url in job.Uris)
{
PayloadFile file = null;
try
{
file = await _payloadsApi.Download(job.PayloadId, url);
}
catch (System.Exception ex)
{
job.Logger.LogWarning("Failed to download file {0} from payload {1}: {2}", url, job.PayloadId, ex);
job.FailedFiles.Add(url);
failureCount++;
continue;
}
try
{
var dicom = DicomFile.Open(new MemoryStream(file.Data));
job.PendingDicomFiles.Enqueue(dicom);
}
catch (System.Exception ex)
{
job.Logger.LogWarning("Failed to load DICOM data {0} from payload {1}: {2}", url, job.PayloadId, ex);
job.FailedFiles.Add(url);
failureCount++;
}
}
if (failureCount > 1)
{
job.Logger.LogWarning("{0}/{1} files failed to load.", failureCount, job.Uris.Count());
}
}
