def send_c_echo(self):
status = self.assoc.send_c_echo()
qry_response = {
'status': {
'code': status.Status,
'category': code_to_category(status.Status)
}
}
return qry_response
def send_c_find(self, qry_dict):
qry_ds = self.make_qry_ds(qry_dict)
qry_response = {'status': list(), 'data': list()}
responses = self.assoc.send_c_find(qry_ds,
query_model=self.query_model)
for status, ds in responses:
status_dict = {
'code': status.Status,
'category': code_to_category(status.Status)
}
qry_response['status'].append(status_dict)
if ds:
data_dict = self.dictify(ds)
qry_response['data'].append(data_dict)
return qry_response
def send_c_move(self, qry_dict):
qry_ds = self.make_qry_ds(qry_dict)
qry_response = {'status': list(), 'data': list()}
responses = self.assoc.send_c_move(qry_ds,
self.client_name,
query_model=self.query_model)
cnt = 0
for status, ds in responses:
status_dict = self.dictify(status)
status_dict['status_category'] = code_to_category(status.Status)
qry_response['status'].append(status_dict)
if ds:
data_dict = self.dictify(ds)
qry_response['data'].append(data_dict)
if cnt == self.mv_brk_cnt - 1:
if 'NumberOfCompletedSuboperations' in qry_response['status']:
if sum(
int(i['NumberOfCompletedSuboperations'])
for i in qry_response['status']) == 0:
qry_response['status'].append({
'Status':
'BREAK @ COUNT ={}'.format(self.mv_brk_cnt)
})
print(
'ABORTING MOVE: {} STATUSES RECEIVED WITHOUT FILE MOVEMENT'
.format(self.mv_brk_cnt))
break
cnt += 1
return qry_response
def test_code_to_category_unknown(self):
"""Test converting an unknown status code to its category"""
assert code_to_category(0xDF01) == 'Unknown'
# Add a requested presentation context
ae.add_requested_context(DisplaySystemSOPClass)
# Associate with peer AE at IP 127.0.0.1 and port 11112
assoc = ae.associate('127.0.0.1', 11112)
if assoc.is_established:
# Use the N-GET service to send the request, returns the
# response status a pydicom Dataset and the AttributeList dataset
status, attr_list = assoc.send_n_get([(0x0008, 0x0070)],
DisplaySystemSOPClass,
'1.2.840.10008.5.1.1.40.1')
# Check the status of the display system request
if 'Status' in status:
print('N-GET request status: 0x{0:04x}'.format(status.Status))
# If the display system request succeeded the status category may
# be either success or warning
category = code_to_category(status.Status)
if category in ['Warning', 'Success']:
# `attr_list` is a pydicom Dataset containing attribute values
print(attr_list)
else:
print('Connection timed out or invalid response from peer')
# Release the association
assoc.release()
else:
print('Association rejected or aborted')
def SCP(self, req, context, info):
"""The implementation for the DIMSE N-GET service.
Parameters
----------
req : dimse_primitives.C_ECHO
The N-GET request primitive sent by the peer.
context : presentation.PresentationContext
The presentation context that the service is operating under.
info : dict
A dict containing details about the association.
See Also
--------
ae.ApplicationEntity.on_n_get
association.Association.send_n_get
Notes
-----
**N-GET Request**
*Parameters*
| (M) Message ID
| (M) Requested SOP Class UID
| (M) Requested SOP Instance UID
| (U) Attribute Identifier List
*Attribute Identifier List*
An element with VR AT, VM 1-n, containing an attribute tag for each
of the attributes applicable to the N-GET operation.
**N-GET Response**
*Parameters*
| (M) Message ID Being Responded To
| (U) Affected SOP Class UID
| (U) Affected SOP Instance UID
| (C) Attribute List
| (M) Status
*Attribute List*
A dataset containing the values of the requested attributes.
References
----------
* DICOM Standard, Part 4, `Annex EE <http://dicom.nema.org/medical/dicom/current/output/html/part04.html#chapter_EE>`_
* DICOM Standard, Part 7, Sections
`10.1.2 <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#sect_10.1.2>`_,
`10.3.2 <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#sect_10.3.2>`_
and `Annex C <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#chapter_C>`_
"""
# Build N-GET response primitive
rsp = N_GET()
rsp.MessageIDBeingRespondedTo = req.MessageID
rsp.AffectedSOPClassUID = req.RequestedSOPClassUID
rsp.AffectedSOPInstanceUID = req.RequestedSOPInstanceUID
default_handler = evt.get_default_handler(evt.EVT_N_GET)
if self.assoc.get_handlers(evt.EVT_N_GET) != default_handler:
try:
(rsp_status, ds) = evt.trigger(self.assoc, evt.EVT_N_GET, {
'request': req,
'context': context.as_tuple,
})
except Exception as exc:
LOGGER.error(
"Exception in the handler bound to 'evt.EVT_N_GET'")
LOGGER.exception(exc)
# Processing failure - Error in on_n_get callback
rsp_status = 0x0110
else:
info['parameters'] = {
'message_id': req.MessageID,
'requested_sop_class_uid': req.RequestedSOPClassUID,
'requested_sop_instance_uid': req.RequestedSOPInstanceUID,
}
# Attempt to run the ApplicationEntity's on_n_get callback
# pylint: disable=broad-except
try:
# Send the value rather than the element
(rsp_status,
ds) = self.ae.on_n_get(req.AttributeIdentifierList,
context.as_tuple, info)
except Exception as exc:
LOGGER.error(
"Exception in the ApplicationEntity.on_n_get() callback")
LOGGER.exception(exc)
# Processing failure - Error in on_n_get callback
rsp_status = 0x0110
# Validate rsp_status and set rsp.Status accordingly
rsp = self.validate_status(rsp_status, rsp)
# Success or Warning, must return AttributeList dataset
if code_to_category(rsp.Status) in [STATUS_SUCCESS, STATUS_WARNING]:
# Encode the `dataset` using the agreed transfer syntax
# Will return None if failed to encode
transfer_syntax = context.transfer_syntax[0]
bytestream = encode(ds, transfer_syntax.is_implicit_VR,
transfer_syntax.is_little_endian)
if bytestream is not None:
rsp.AttributeList = BytesIO(bytestream)
else:
LOGGER.error("Failed to encode the supplied Dataset")
# Processing failure - Failed to encode dataset
rsp.Status = 0x0110
self.dimse.send_msg(rsp, context.context_id)
def _get_scp(self, req, context):
"""
Parameters
----------
req : dimse_primitives.N_GET
The N-GET request primitive sent by the peer.
context : presentation.PresentationContext
The presentation context that the service is operating under.
See Also
--------
association.Association.send_n_get
Notes
-----
**N-GET Request**
*Parameters*
| (M) Message ID
| (M) Requested SOP Class UID
| (M) Requested SOP Instance UID
| (U) Attribute Identifier List
*Attribute Identifier List*
An element with VR AT, VM 1-n, containing an attribute tag for each
of the attributes applicable to the N-GET operation.
**N-GET Response**
*Parameters*
| (M) Message ID Being Responded To
| (U) Affected SOP Class UID
| (U) Affected SOP Instance UID
| (C) Attribute List
| (M) Status
*Attribute List*
A dataset containing the values of the requested attributes.
*Status*
Success
| ``0x0000`` - Success
Failure
| ``0x0107`` - SOP Class not supported
| ``0x0110`` - Processing failure
| ``0x0112`` - No such SOP Instance
| ``0x0117`` - Invalid object instance
| ``0x0118`` - No such SOP Class
| ``0x0119`` - Class-Instance conflict
| ``0x0122`` - SOP Class not supported
| ``0x0124`` - Refused: not authorised
| ``0x0210`` - Duplicate invocation
| ``0x0211`` - Unrecognised operation
| ``0x0212`` - Mistyped argument
| ``0x0213`` - Resource limitation
References
----------
* DICOM Standard, Part 4, `Annex EE <http://dicom.nema.org/medical/dicom/current/output/html/part04.html#chapter_EE>`_
* DICOM Standard, Part 7, Sections
`10.1.2 <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#sect_10.1.2>`_,
`10.3.2 <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#sect_10.3.2>`_
and `Annex C <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#chapter_C>`_
"""
# Build N-GET response primitive
rsp = N_GET()
rsp.MessageIDBeingRespondedTo = req.MessageID
rsp.AffectedSOPClassUID = req.RequestedSOPClassUID
rsp.AffectedSOPInstanceUID = req.RequestedSOPInstanceUID
try:
status, ds = evt.trigger(
self.assoc,
evt.EVT_N_GET,
{
'request' : req,
'context' : context.as_tuple,
}
)
except Exception as exc:
LOGGER.error(
"Exception in the handler bound to 'evt.EVT_N_GET'"
)
LOGGER.exception(exc)
# Processing failure - Error in handler
rsp.Status = 0x0110
self.dimse.send_msg(rsp, context.context_id)
return
# Validate rsp_status and set rsp.Status accordingly
rsp = self.validate_status(status, rsp)
# Success or Warning, must return AttributeList dataset
if code_to_category(rsp.Status) in [STATUS_SUCCESS, STATUS_WARNING]:
# Encode the `dataset` using the agreed transfer syntax
# Will return None if failed to encode
transfer_syntax = context.transfer_syntax[0]
bytestream = encode(ds,
transfer_syntax.is_implicit_VR,
transfer_syntax.is_little_endian)
if bytestream is not None:
rsp.AttributeList = BytesIO(bytestream)
else:
LOGGER.error("Failed to encode the supplied Dataset")
# Processing failure - Failed to encode dataset
rsp.Status = 0x0110
self.dimse.send_msg(rsp, context.context_id)
