/// <summary>
/// Main routine for processing C-MOVE-RQ messages. Called by the <see cref="DicomScp{DicomScpParameters}"/> component.
/// </summary>
/// <param name="server"></param>
/// <param name="association"></param>
/// <param name="presentationID"></param>
/// <param name="message"></param>
/// <returns></returns>
public override bool OnReceiveRequest(DicomServer server, ServerAssociationParameters association, byte presentationID, DicomMessage message)
{
bool finalResponseSent = false;
string errorComment;
try
{
// Check for a Cancel message, and cancel the SCU.
if (message.CommandField == DicomCommandField.CCancelRequest)
{
if (_theScu != null)
{
_theScu.Cancel();
}
return(true);
}
// Get the level of the Move.
String level = message.DataSet[DicomTags.QueryRetrieveLevel].GetString(0, "");
// Trim the remote AE, see extra spaces at the end before which has caused problems
string remoteAe = message.MoveDestination.Trim();
// Open a DB Connection
using (IReadContext read = _store.OpenReadContext())
{
// Load remote device information fromt he database.
Device device = LoadRemoteHost(read, Partition, remoteAe);
if (device == null)
{
errorComment = string.Format(
"Unknown move destination \"{0}\", failing C-MOVE-RQ from {1} to {2}",
remoteAe, association.CallingAE, association.CalledAE);
Platform.Log(LogLevel.Error, errorComment);
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveMoveDestinationUnknown, errorComment);
finalResponseSent = true;
return(true);
}
// If the remote node is a DHCP node, use its IP address from the connection information, else
// use what is configured. Always use the configured port.
if (device.Dhcp)
{
device.IpAddress = association.RemoteEndPoint.Address.ToString();
}
// Now setup the StorageSCU component
_theScu = new ImageServerStorageScu(Partition, device,
association.CallingAE, message.MessageId);
// Now create the list of SOPs to send
bool bOnline;
if (level.Equals("PATIENT"))
{
bOnline = GetSopListForPatient(read, message, out errorComment);
}
else if (level.Equals("STUDY"))
{
bOnline = GetSopListForStudy(message, out errorComment);
}
else if (level.Equals("SERIES"))
{
bOnline = GetSopListForSeries(read, message, out errorComment);
}
else if (level.Equals("IMAGE"))
{
bOnline = GetSopListForSop(message, out errorComment);
}
else
{
errorComment = string.Format("Unexpected Study Root Move Query/Retrieve level: {0}", level);
Platform.Log(LogLevel.Error, errorComment);
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveIdentifierDoesNotMatchSOPClass,
errorComment);
finalResponseSent = true;
return(true);
}
// Could not find an online/readable location for the requested objects to move.
// Note that if the C-MOVE-RQ included a list of study instance uids, and some
// were online and some offline, we don't fail now (ie, the check on the Count)
if (!bOnline && _theScu.StorageInstanceList.Count == 0)
{
Platform.Log(LogLevel.Error, "Unable to find online storage location for C-MOVE-RQ: {0}", errorComment);
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveUnableToPerformSuboperations,
string.IsNullOrEmpty(errorComment) ? string.Empty : errorComment);
finalResponseSent = true;
_theScu.Dispose();
_theScu = null;
return(true);
}
// No files were eligible for transfer, just send success and return
if (_theScu.StorageInstanceList.Count == 0)
{
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.Success,
0, 0, 0, 0);
finalResponseSent = true;
_theScu.Dispose();
_theScu = null;
return(true);
}
// set the preferred syntax lists
_theScu.LoadPreferredSyntaxes(read);
_theScu.ImageStoreCompleted += delegate(Object sender, StorageInstance instance)
{
var scu = (StorageScu)sender;
var msg = new DicomMessage();
DicomStatus status;
if (instance.SendStatus.Status == DicomState.Failure)
{
errorComment =
string.IsNullOrEmpty(instance.ExtendedFailureDescription)
? instance.SendStatus.ToString()
: instance.ExtendedFailureDescription;
}
if (scu.RemainingSubOperations == 0)
{
foreach (StorageInstance sop in _theScu.StorageInstanceList)
{
if ((sop.SendStatus.Status != DicomState.Success) &&
(sop.SendStatus.Status != DicomState.Warning))
{
msg.DataSet[DicomTags.FailedSopInstanceUidList].AppendString(sop.SopInstanceUid);
}
}
if (scu.Status == ScuOperationStatus.Canceled)
{
status = DicomStatuses.Cancel;
}
else if (scu.Status == ScuOperationStatus.ConnectFailed)
{
status = DicomStatuses.QueryRetrieveMoveDestinationUnknown;
}
else if (scu.FailureSubOperations > 0)
{
status = DicomStatuses.QueryRetrieveSubOpsOneOrMoreFailures;
}
else if (!bOnline)
{
status = DicomStatuses.QueryRetrieveUnableToPerformSuboperations;
}
else
{
status = DicomStatuses.Success;
}
}
else
{
status = DicomStatuses.Pending;
if ((scu.RemainingSubOperations % 5) != 0)
{
return;
}
// Only send a RSP every 5 to reduce network load
}
server.SendCMoveResponse(presentationID, message.MessageId,
msg, status,
(ushort)scu.SuccessSubOperations,
(ushort)scu.RemainingSubOperations,
(ushort)scu.FailureSubOperations,
(ushort)scu.WarningSubOperations,
status == DicomStatuses.QueryRetrieveSubOpsOneOrMoreFailures
? errorComment
: string.Empty);
if (scu.RemainingSubOperations == 0)
{
finalResponseSent = true;
}
};
_theScu.AssociationAccepted +=
(sender, parms) => AssociationAuditLogger.BeginInstancesTransferAuditLogger(
_theScu.StorageInstanceList,
parms);
_theScu.BeginSend(
delegate(IAsyncResult ar)
{
if (_theScu != null)
{
if (!finalResponseSent)
{
var msg = new DicomMessage();
server.SendCMoveResponse(presentationID, message.MessageId,
msg, DicomStatuses.QueryRetrieveSubOpsOneOrMoreFailures,
(ushort)_theScu.SuccessSubOperations,
0,
(ushort)(_theScu.FailureSubOperations + _theScu.RemainingSubOperations),
(ushort)_theScu.WarningSubOperations, errorComment);
finalResponseSent = true;
}
_theScu.EndSend(ar);
_theScu.Dispose();
_theScu = null;
}
},
_theScu);
return(true);
} // end using()
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unexpected exception when processing C-MOVE-RQ");
if (finalResponseSent == false)
{
try
{
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveUnableToProcess, e.Message);
finalResponseSent = true;
}
catch (Exception x)
{
Platform.Log(LogLevel.Error, x,
"Unable to send final C-MOVE-RSP message on association from {0} to {1}",
association.CallingAE, association.CalledAE);
server.Abort();
}
}
}
return(false);
}
/// <summary>
/// Main routine for processing C-MOVE-RQ messages. Called by the <see cref="DicomScp{TContext}" /> component.
/// </summary>
/// <param name="server"></param>
/// <param name="association"></param>
/// <param name="presentationID"></param>
/// <param name="message"></param>
/// <returns></returns>
public override bool OnReceiveRequest(DicomServer server, ServerAssociationParameters association,
byte presentationID, DicomMessage message)
{
var finalResponseSent = false;
string errorComment;
try
{
// check for a Cancel Message, and cance the scu
if (message.CommandField == DicomCommandField.CCancelRequest)
{
if (_theScu != null)
{
_theScu.Cancel();
}
return(true);
}
var level = message.DataSet[DicomTags.QueryRetrieveLevel].GetString(0, string.Empty);
var remoteAe = message.MoveDestination.Trim();
// load remote device for move information
var device = IoC.Get <IDeviceManager>().LookupDevice(Partition, remoteAe);
if (device == null)
{
errorComment = string.Format(
"Unknown move destination \"{0}\", failing C-MOVE-RQ from {1} to {2}",
remoteAe, association.CallingAE, association.CalledAE);
Platform.Log(LogLevel.Error, errorComment);
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveMoveDestinationUnknown, errorComment);
finalResponseSent = true;
return(true);
}
//If the remote node is a DHCP node, use its IP address from the connection information, else
// use what is configured.Always use the configured port.
if (device.Dhcp && association.CallingAE.Equals(remoteAe))
{
device.Hostname = association.RemoteEndPoint.Address.ToString();
}
// now setup the storage scu component
_theScu = new PacsStorageScu(Partition, device, association.CallingAE, message.MessageId);
bool bOnline;
if (level.Equals("PATIENT"))
{
bOnline = GetSopListForPatient(message, out errorComment);
}
else if (level.Equals("STUDY"))
{
bOnline = GetSopListForStudy(message, out errorComment);
}
else if (level.Equals("SERIES"))
{
bOnline = GetSopListForSeries(message, out errorComment);
}
else if (level.Equals("IMAGE"))
{
bOnline = GetSopListForInstance(message, out errorComment);
}
else
{
errorComment = string.Format("Unexpected Study Root Move Query/Retrieve level: {0}", level);
Platform.Log(LogLevel.Error, errorComment);
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveIdentifierDoesNotMatchSOPClass,
errorComment);
finalResponseSent = true;
return(true);
}
// Could not find an online/readable location for the requested objects to move.
// Note that if the C-MOVE-RQ included a list of study instance uids, and some
// were online and some offline, we don't fail now (ie, the check on the Count)
if (!bOnline || _theScu.StorageInstanceList.Count == 0)
{
Platform.Log(LogLevel.Error, "Unable to find online storage location for C-MOVE-RQ: {0}",
errorComment);
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveUnableToPerformSuboperations,
string.IsNullOrEmpty(errorComment) ? string.Empty : errorComment);
finalResponseSent = true;
_theScu.Dispose();
_theScu = null;
return(true);
}
_theScu.ImageStoreCompleted += delegate(object sender, StorageInstance instance)
{
var scu = (StorageScu)sender;
var msg = new DicomMessage();
DicomStatus status;
if (instance.SendStatus.Status == DicomState.Failure)
{
errorComment =
string.IsNullOrEmpty(instance.ExtendedFailureDescription)
? instance.SendStatus.ToString()
: instance.ExtendedFailureDescription;
}
if (scu.RemainingSubOperations == 0)
{
foreach (var sop in _theScu.StorageInstanceList)
{
if ((sop.SendStatus.Status != DicomState.Success) &&
(sop.SendStatus.Status != DicomState.Warning))
{
msg.DataSet[DicomTags.FailedSopInstanceUidList].AppendString(sop.SopInstanceUid);
}
}
if (scu.Status == ScuOperationStatus.Canceled)
{
status = DicomStatuses.Cancel;
}
else if (scu.Status == ScuOperationStatus.ConnectFailed)
{
status = DicomStatuses.QueryRetrieveMoveDestinationUnknown;
}
else if (scu.FailureSubOperations > 0)
{
status = DicomStatuses.QueryRetrieveSubOpsOneOrMoreFailures;
}
else if (!bOnline)
{
status = DicomStatuses.QueryRetrieveUnableToPerformSuboperations;
}
else
{
status = DicomStatuses.Success;
}
}
else
{
status = DicomStatuses.Pending;
if (scu.RemainingSubOperations % 5 != 0)
{
return;
}
// Only send a RSP every 5 to reduce network load
}
server.SendCMoveResponse(presentationID, message.MessageId,
msg, status,
(ushort)scu.SuccessSubOperations,
(ushort)scu.RemainingSubOperations,
(ushort)scu.FailureSubOperations,
(ushort)scu.WarningSubOperations,
status == DicomStatuses.QueryRetrieveSubOpsOneOrMoreFailures
? errorComment
: string.Empty);
if (scu.RemainingSubOperations == 0)
{
finalResponseSent = true;
}
};
_theScu.BeginSend(
delegate(IAsyncResult ar)
{
if (_theScu != null)
{
if (!finalResponseSent)
{
var msg = new DicomMessage();
server.SendCMoveResponse(presentationID, message.MessageId,
msg, DicomStatuses.QueryRetrieveSubOpsOneOrMoreFailures,
(ushort)_theScu.SuccessSubOperations,
0,
(ushort)
(_theScu.FailureSubOperations +
_theScu.RemainingSubOperations),
(ushort)_theScu.WarningSubOperations, errorComment);
finalResponseSent = true;
}
_theScu.EndSend(ar);
_theScu.Dispose();
_theScu = null;
}
},
_theScu);
return(true);
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unexpected exception when processing C-MOVE-RQ");
if (finalResponseSent == false)
{
try
{
server.SendCMoveResponse(presentationID, message.MessageId, new DicomMessage(),
DicomStatuses.QueryRetrieveUnableToProcess, e.Message);
finalResponseSent = true;
}
catch (Exception x)
{
Platform.Log(LogLevel.Error, x,
"Unable to send final C-MOVE-RSP message on association from {0} to {1}",
association.CallingAE, association.CalledAE);
server.Abort();
}
}
}
return(false);
}
