public DicomFile LoadDicomFile(LoadDicomFileArgs args)
{
try
{
var client = new StreamingClient(_wadoUri);
var file = new DicomFile();
using (var stream = client.RetrieveImageHeader(_aeTitle, args.StudyInstanceUid, args.SeriesInstanceUid, args.SopInstanceUid))
{
file.Load(stream);
}
return file;
}
catch (Exception e)
{
throw TranslateStreamingException(e);
}
}
public DicomFile LoadDicomFile(LoadDicomFileArgs args)
{
try
{
Uri uri = new Uri(string.Format(StreamingSettings.Default.FormatWadoUriPrefix, _hostName, _wadoServicePort));
var client = new StreamingClient(uri);
var file = new DicomFile();
using (var stream = client.RetrieveImageHeader(_aeTitle, args.StudyInstanceUid, args.SeriesInstanceUid, args.SopInstanceUid))
{
file.Load(stream);
}
return file;
}
catch (Exception e)
{
throw TranslateStreamingException(e);
}
}
private DicomFile TryClientRetrieveImageHeader(out Exception lastRetrieveException)
{
// retry parameters
const int retryTimeout = 1500;
int retryDelay = 50;
int retryCounter = 0;
Uri uri = new Uri(string.Format(StreamingSettings.Default.FormatWadoUriPrefix, _host, _wadoServicePort));
StreamingClient client = new StreamingClient(uri);
DicomFile result = null;
lastRetrieveException = null;
CodeClock timeoutClock = new CodeClock();
timeoutClock.Start();
while (true)
{
try
{
if (retryCounter > 0)
Platform.Log(LogLevel.Info, "Retrying retrieve headers for Sop '{0}' (Attempt #{1})", this.SopInstanceUid, retryCounter);
using (Stream imageHeaderStream = client.RetrieveImageHeader(_aeTitle, this.StudyInstanceUid, this.SeriesInstanceUid, this.SopInstanceUid))
{
DicomFile imageHeader = new DicomFile();
imageHeader.Load(imageHeaderStream);
result = imageHeader;
}
break;
}
catch (Exception ex)
{
lastRetrieveException = ex;
timeoutClock.Stop();
if (timeoutClock.Seconds*1000 >= retryTimeout)
{
// log an alert that we are aborting (exception trace at debug level only)
int elapsed = (int) (1000*timeoutClock.Seconds);
Platform.Log(LogLevel.Warn, "Failed to retrieve headers for Sop '{0}'; Aborting after {1} attempts in {2} ms", this.SopInstanceUid, retryCounter, elapsed);
Platform.Log(LogLevel.Debug, ex, "[GetHeaders Fail-Abort] Sop: {0}, Retry Attempts: {1}, Elapsed: {2} ms", this.SopInstanceUid, retryCounter, elapsed);
break;
}
timeoutClock.Start();
retryCounter++;
// log the retry (exception trace at debug level only)
Platform.Log(LogLevel.Warn, "Failed to retrieve headers for Sop '{0}'; Retrying in {1} ms", this.SopInstanceUid, retryDelay);
Platform.Log(LogLevel.Debug, ex, "[GetHeaders Fail-Retry] Sop: {0}, Retry in: {1} ms", this.SopInstanceUid, retryDelay);
MemoryManager.Collect(retryDelay);
retryDelay *= 2;
}
}
return result;
}