def test_conversion_rsp(self):
""" Check conversion to a -RSP PDU produces the correct output """
primitive = N_CREATE()
primitive.MessageIDBeingRespondedTo = 5
primitive.AffectedSOPClassUID = '1.2.4.10'
primitive.AffectedSOPInstanceUID = '1.2.4.5.7.8'
primitive.Status = 0x0000
ds = Dataset()
ds.PatientID = 'Test1101'
ds.PatientName = "Tube HeNe"
primitive.AttributeList = BytesIO(encode(ds, True, True))
dimse_msg = N_CREATE_RSP()
dimse_msg.primitive_to_message(primitive)
pdvs = []
for fragment in dimse_msg.encode_msg(1, 16382):
pdvs.append(fragment)
assert len(pdvs) == 2
cs_pdv = pdvs[0].presentation_data_value_list[0][1]
ds_pdv = pdvs[1].presentation_data_value_list[0][1]
assert cs_pdv == n_create_rsp_cmd
assert ds_pdv == n_create_rsp_ds
def test_conversion_rq(self):
""" Check conversion to a -RQ PDU produces the correct output """
primitive = N_CREATE()
primitive.MessageID = 7
primitive.AffectedSOPClassUID = '1.2.840.10008.5.1.4.1.1.2'
primitive.AffectedSOPInstanceUID = '1.2.392.200036.9116.2.6.1.48'
ds = Dataset()
ds.PatientID = 'Test1101'
ds.PatientName = "Tube HeNe"
primitive.AttributeList = BytesIO(encode(ds, True, True))
dimse_msg = N_CREATE_RQ()
dimse_msg.primitive_to_message(primitive)
pdvs = []
for fragment in dimse_msg.encode_msg(1, 16382):
pdvs.append(fragment)
assert len(pdvs) == 2
cs_pdv = pdvs[0].presentation_data_value_list[0][1]
ds_pdv = pdvs[1].presentation_data_value_list[0][1]
assert cs_pdv == n_create_rq_cmd
assert ds_pdv == n_create_rq_ds
def test_callback_receive_n_create(self):
"""Check callback for receiving DIMSE N-CREATE messages."""
# N-CREATE-RQ
primitive = N_CREATE()
primitive.MessageID = 1
primitive.AffectedSOPClassUID = '1.1.1'
msg = N_CREATE_RQ()
msg.primitive_to_message(primitive)
msg.context_id = 1
self.dimse.debug_receive_n_create_rq(msg)
# User defined
primitive.AffectedSOPInstanceUID = '1.1.1.1'
primitive.AttributeList = BytesIO(n_create_rq_ds)
msg = N_CREATE_RQ()
msg.primitive_to_message(primitive)
msg.context_id = 1
self.dimse.debug_receive_n_create_rq(msg)
# N-CREATE-RSP
primitive = N_CREATE()
primitive.MessageIDBeingRespondedTo = 1
primitive.Status = 0x0000
msg = N_CREATE_RSP()
msg.primitive_to_message(primitive)
msg.context_id = 1
self.dimse.debug_receive_n_create_rsp(msg)
# User defined
primitive.AffectedSOPClassUID = '1.1.1'
primitive.AffectedSOPInstanceUID = '1.1.1.1'
primitive.AttributeList = BytesIO(n_create_rsp_ds)
msg = N_CREATE_RSP()
msg.primitive_to_message(primitive)
msg.context_id = 1
self.dimse.debug_receive_n_create_rsp(msg)
def test_assignment(self):
""" Check assignment works correctly """
primitive = N_CREATE()
# AffectedSOPClassUID
primitive.AffectedSOPClassUID = '1.1.1'
assert primitive.AffectedSOPClassUID == UID('1.1.1')
assert isinstance(primitive.AffectedSOPClassUID, UID)
primitive.AffectedSOPClassUID = UID('1.1.2')
assert primitive.AffectedSOPClassUID == UID('1.1.2')
assert isinstance(primitive.AffectedSOPClassUID, UID)
primitive.AffectedSOPClassUID = b'1.1.3'
assert primitive.AffectedSOPClassUID == UID('1.1.3')
assert isinstance(primitive.AffectedSOPClassUID, UID)
# AffectedSOPInstanceUID
primitive.AffectedSOPInstanceUID = b'1.2.1'
assert primitive.AffectedSOPInstanceUID == UID('1.2.1')
assert isinstance(primitive.AffectedSOPClassUID, UID)
primitive.AffectedSOPInstanceUID = UID('1.2.2')
assert primitive.AffectedSOPInstanceUID == UID('1.2.2')
assert isinstance(primitive.AffectedSOPClassUID, UID)
primitive.AffectedSOPInstanceUID = '1.2.3'
assert primitive.AffectedSOPInstanceUID == UID('1.2.3')
assert isinstance(primitive.AffectedSOPClassUID, UID)
# AttributeList
ref_ds = Dataset()
ref_ds.PatientID = '1234567'
primitive.AttributeList = BytesIO(encode(ref_ds, True, True))
ds = decode(primitive.AttributeList, True, True)
assert ds.PatientID == '1234567'
# MessageID
primitive.MessageID = 11
assert 11 == primitive.MessageID
# MessageIDBeingRespondedTo
primitive.MessageIDBeingRespondedTo = 13
assert 13 == primitive.MessageIDBeingRespondedTo
# Status
primitive.Status = 0x0000
assert primitive.Status == 0x0000
def test_callback_send_n_create(self):
"""Check callback for sending DIMSE N-CREATE messages."""
# N-CREATE-RQ
primitive = N_CREATE()
primitive.MessageID = 1
primitive.AffectedSOPClassUID = '1.1.1'
self.dimse.send_msg(primitive, 1)
# User defined
primitive.AffectedSOPInstanceUID = '1.2.3'
primitive.AttributeList = BytesIO(b'\x00\x01')
self.dimse.send_msg(primitive, 1)
# N-CREATE-RSP
primitive = N_CREATE()
primitive.MessageIDBeingRespondedTo = 1
primitive.Status = 0x0000
self.dimse.send_msg(primitive, 1)
primitive.AffectedSOPClassUID = '1.2'
primitive.AffectedSOPInstanceUID = '1.2.3'
primitive.AattributeList = BytesIO(b'\x00\x01')
self.dimse.send_msg(primitive, 1)
def _create_scp(self, req, context):
"""Implementation of the N-CREATE SCP.
Parameters
----------
req : dimse_primitives.N_CREATE
The N-CREATE request primitive sent by the peer.
context : presentation.PresentationContext
The presentation context that the SCP is operating under.
Notes
-----
**N-CREATE Request**
*Parameters*
| (M) Message ID
| (M) Affected SOP Class UID
| (U) Affected SOP Instance UID
| (U) Attribute List
As per the DICOM Standard, Annex F.7.2.1.2, the SCU shall specify the
SOP Class UID and SOP Instance UID in the N-CREATE request.
**N-CREATE Response**
*Parameters*
| (M) Message ID Being Responded To
| (U=) Affected SOP Class UID
| (C) Affected SOP Instance UID
| (U) Attribute List
| (M) Status
*Status*
Success
| ``0x0000`` - Success
Failure
| ``0x0105`` - No such attribute
| ``0x0106`` - Invalid attribute value
| ``0x0107`` - Attribute list error
| ``0x0110`` - Processing failure
| ``0x0111`` - Duplicate SOP Instance
| ``0x0116`` - Attribute value out of range
| ``0x0117`` - Invalid object instance
| ``0x0118`` - No such SOP Class
| ``0x0120`` - Missing attribute
| ``0x0121`` - Missing attribute value
| ``0x0124`` - Refused: not authorised
| ``0x0210`` - Duplicate invocation
| ``0x0211`` - Unrecognised operation
| ``0x0212`` - Mistyped argument
| ``0x0213`` - Resource limitation
References
----------
* DICOM Standard, Part 4, `Annex F <http://dicom.nema.org/medical/dicom/current/output/html/part04.html#chapter_F>`_
* DICOM Standard, Part 7, Sections
`10.1.5 <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#sect_10.1.5>`_,
`10.3.5 <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#sect_10.3.5>`_
and `Annex C <http://dicom.nema.org/medical/dicom/current/output/html/part07.html#chapter_C>`_
"""
# Build N-CREATE response primitive
rsp = N_CREATE()
rsp.MessageIDBeingRespondedTo = req.MessageID
rsp.AffectedSOPClassUID = req.AffectedSOPClassUID
rsp.AffectedSOPInstanceUID = req.AffectedSOPInstanceUID
try:
status, ds = evt.trigger(
self.assoc,
evt.EVT_N_CREATE,
{'request' : req, 'context' : context.as_tuple}
)
except Exception as exc:
LOGGER.error(
"Exception in the handler bound to 'evt.EVT_N_CREATE"
)
LOGGER.exception(exc)
rsp.Status = 0x0110
self.dimse.send_msg(rsp, context.context_id)
return
# Check Status validity
# Validate rsp_status and set rsp.Status accordingly
rsp = self.validate_status(status, rsp)
if rsp.Status in self.statuses:
status = self.statuses[rsp.Status]
else:
# Unknown status
self.dimse.send_msg(rsp, context.context_id)
return
if status[0] in (STATUS_SUCCESS, STATUS_WARNING) and ds:
# If success or warning then there may be a dataset
transfer_syntax = context.transfer_syntax[0]
bytestream = encode(ds,
transfer_syntax.is_implicit_VR,
transfer_syntax.is_little_endian)
bytestream = BytesIO(bytestream)
if bytestream.getvalue() == b'':
LOGGER.error(
"Failed to encode the N-CREATE response's 'Attribute "
"List' dataset"
)
# Processing failure
rsp.Status = 0x0110
else:
rsp.AttributeList = bytestream
# Send response primitive
self.dimse.send_msg(rsp, context.context_id)
def test_exceptions(self):
""" Check incorrect types/values for properties raise exceptions """
primitive = N_CREATE()
# MessageID
with pytest.raises(TypeError):
primitive.MessageID = 'halp'
with pytest.raises(TypeError):
primitive.MessageID = 1.111
with pytest.raises(ValueError):
primitive.MessageID = 65536
with pytest.raises(ValueError):
primitive.MessageID = -1
# MessageIDBeingRespondedTo
with pytest.raises(TypeError):
primitive.MessageIDBeingRespondedTo = 'halp'
with pytest.raises(TypeError):
primitive.MessageIDBeingRespondedTo = 1.111
with pytest.raises(ValueError):
primitive.MessageIDBeingRespondedTo = 65536
with pytest.raises(ValueError):
primitive.MessageIDBeingRespondedTo = -1
# AffectedSOPClassUID
with pytest.raises(TypeError):
primitive.AffectedSOPClassUID = 45.2
with pytest.raises(TypeError):
primitive.AffectedSOPClassUID = 100
with pytest.raises(ValueError):
primitive.AffectedSOPClassUID = 'abc'
# AffectedSOPInstanceUID
with pytest.raises(TypeError):
primitive.AffectedSOPInstanceUID = 45.2
with pytest.raises(TypeError):
primitive.AffectedSOPInstanceUID = 100
with pytest.raises(ValueError):
primitive.AffectedSOPInstanceUID = 'abc'
# AttributeList
msg = r"'AttributeList' parameter must be a BytesIO object"
with pytest.raises(TypeError, match=msg):
primitive.AttributeList = 'halp'
with pytest.raises(TypeError):
primitive.AttributeList = 1.111
with pytest.raises(TypeError):
primitive.AttributeList = 50
with pytest.raises(TypeError):
primitive.AttributeList = [30, 10]
# Status
with pytest.raises(TypeError):
primitive.Status = 19.4