def get_request() -> xdlms.GetRequestNormal:
# invocation counter
return xdlms.GetRequestNormal(cosem_attribute=cosem.CosemAttribute(
interface=enumerations.CosemInterface.DATA,
instance=cosem.Obis(0, 0, 0x2B, 1, 0),
attribute=2,
))
def send_hls_reply(self) -> Optional[bytes]:
return self.action(
method=cosem.CosemMethod(
enumerations.CosemInterface.ASSOCIATION_LN,
cosem.Obis(0, 0, 40, 0, 0),
1,
),
data=dlms_data.OctetStringData(
self.dlms_connection.get_hls_reply()).to_bytes(),
)
def test_parse_buffer():
data = b"\x01\x04\x02\x04\t\x0c\x07\xe3\x0c\x1f\x02\x17\x00\x00\x00\xff\xc4\x00\x11\x06\x06\x00\x00\x05\xed\x06\x00\x00\x06T\x02\x04\x00\x11\x06\x06\x00\x00\x05\xed\x06\x00\x00\x06T\x02\x04\x00\x11\x06\x06\x00\x00\x05\xed\x06\x00\x00\x06T\x02\x04\x00\x11\x06\x06\x00\x00\x05\xed\x06\x00\x00\x06T"
parser = ProfileGenericBufferParser(
capture_objects=[
cosem.CosemAttribute(
interface=enumerations.CosemInterface.CLOCK,
instance=cosem.Obis(0, 0, 1, 0, 0, 255),
attribute=2,
),
cosem.CosemAttribute(
interface=enumerations.CosemInterface.DATA,
instance=cosem.Obis(0, 0, 96, 10, 1, 255),
attribute=2,
),
cosem.CosemAttribute(
interface=enumerations.CosemInterface.REGISTER,
instance=cosem.Obis(1, 0, 1, 8, 0, 255),
attribute=2,
),
cosem.CosemAttribute(
interface=enumerations.CosemInterface.REGISTER,
instance=cosem.Obis(1, 0, 2, 8, 0, 255),
attribute=2,
),
],
capture_period=60,
)
result = parser.parse_bytes(data)
assert len(result) == 4
assert len(result[0]) == 4
assert result[0][0].attribute.attribute == 2
assert result[0][
0].attribute.interface == enumerations.CosemInterface.CLOCK
assert result[0][0].attribute.instance.to_string() == "0-0:1.0.0.255"
assert (result[1][0].value - result[0][0].value).total_seconds() == 60 * 60
def set_request() -> xdlms.SetRequestNormal:
# invocation counter
return xdlms.SetRequestNormal(
cosem_attribute=cosem.CosemAttribute(
interface=enumerations.CosemInterface.CLOCK,
instance=cosem.Obis(a=0, b=0, c=1, d=0, e=0, f=255),
attribute=2,
),
data=b"\t\x0c\x07\xe5\x01\x18\xff\x0e09P\xff\xc4\x00",
access_selection=None,
invoke_id_and_priority=xdlms.InvokeIdAndPriority(invoke_id=1,
confirmed=True,
high_priority=True),
)
def test_range_descriptor_to_bytes():
rd = RangeDescriptor(
restricting_object=selective_access.CaptureObject(
cosem_attribute=cosem.CosemAttribute(
interface=enumerations.CosemInterface.CLOCK,
instance=cosem.Obis(0, 0, 1, 0, 0, 255),
attribute=2,
),
data_index=0,
),
from_value=parser.parse("2020-01-01T00:03:00+02:00"),
to_value=parser.parse("2020-01-06T00:03:00+01:00"),
)
data = b"\x01\x02\x04\x02\x04\x12\x00\x08\t\x06\x00\x00\x01\x00\x00\xff\x0f\x02\x12\x00\x00\t\x0c\x07\xe4\x01\x01\xff\x00\x03\x00\x00\xff\x88\x00\t\x0c\x07\xe4\x01\x06\xff\x00\x03\x00\x00\xff\xc4\x00\x01\x00"
assert rd.to_bytes() == data
def test_transform_bytes_without_data(self):
data = b"\xc3\x01\xc0\x00\x0f\x00\x00(\x00\x00\xff\x01\x00"
action = xdlms.ActionRequestNormal(
cosem_method=cosem.CosemMethod(
interface=enumerations.CosemInterface.ASSOCIATION_LN,
instance=cosem.Obis(a=0, b=0, c=40, d=0, e=0, f=255),
method=1,
),
data=None,
invoke_id_and_priority=xdlms.InvokeIdAndPriority(
invoke_id=0, confirmed=True, high_priority=True),
)
assert data == action.to_bytes()
assert action == xdlms.ActionRequestNormal.from_bytes(data)
def test_transform_bytes(self):
data = b"\xc1\x01\xc1\x00\x08\x00\x00\x01\x00\x00\xff\x02\x00\t\x0c\x07\xe5\x01\x18\xff\x0e09P\xff\xc4\x00"
request = xdlms.SetRequestNormal(
cosem_attribute=cosem.CosemAttribute(
interface=enumerations.CosemInterface.CLOCK,
instance=cosem.Obis(a=0, b=0, c=1, d=0, e=0, f=255),
attribute=2,
),
data=b"\t\x0c\x07\xe5\x01\x18\xff\x0e09P\xff\xc4\x00",
access_selection=None,
invoke_id_and_priority=xdlms.InvokeIdAndPriority(
invoke_id=1, confirmed=True, high_priority=True
),
)
assert data == request.to_bytes()
assert request == xdlms.SetRequestNormal.from_bytes(data)
def test_transform_bytes(self):
data = b'\xc3\x01\xc0\x00\x0f\x00\x00(\x00\x00\xff\x01\x01\t\x11\x10\x00\x00\x1a\x90\xe6\xd2"\x1f\xa2\xfd\x85\xee\xd6\x1a\xcc"'
action = xdlms.ActionRequestNormal(
cosem_method=cosem.CosemMethod(
interface=enumerations.CosemInterface.ASSOCIATION_LN,
instance=cosem.Obis(a=0, b=0, c=40, d=0, e=0, f=255),
method=1,
),
data=
b'\t\x11\x10\x00\x00\x1a\x90\xe6\xd2"\x1f\xa2\xfd\x85\xee\xd6\x1a\xcc"',
invoke_id_and_priority=xdlms.InvokeIdAndPriority(
invoke_id=0, confirmed=True, high_priority=True),
)
assert data == action.to_bytes()
assert action == xdlms.ActionRequestNormal.from_bytes(data)
def test_capture_object_definition():
x = selective_access.CaptureObject(
cosem_attribute=cosem.CosemAttribute(
interface=enumerations.CosemInterface.CLOCK,
instance=cosem.Obis(0, 0, 1, 0, 0, 255),
attribute=2,
),
data_index=0,
)
assert x.to_bytes() == (
b"\x02\x04" # structure of 4 elements
b"\x12\x00\x08" # Clock interface class (unsigned long int)
b"\t\x06\x00\x00\x01\x00\x00\xff" # Clock instance octet string of 0.0.1.0.0.255
b"\x0f\x02" # attribute index = 2 (integer)
b"\x12\x00\x00" # data index = 0 (long unsigned)
)
management_client = partial(
DlmsClient.with_tcp_transport,
server_logical_address=1,
client_logical_address=1,
authentication_method=auth,
encryption_key=encryption_key,
authentication_key=authentication_key,
)
with public_client(host=host, port=port).session() as client:
response_data = client.get(
cosem.CosemAttribute(
interface=enumerations.CosemInterface.DATA,
instance=cosem.Obis(0, 0, 0x2B, 1, 0),
attribute=2,
)
)
data_decoder = a_xdr.AXdrDecoder(
encoding_conf=a_xdr.EncodingConf(
attributes=[a_xdr.Sequence(attribute_name="data")]
)
)
invocation_counter = data_decoder.decode(response_data)["data"]
print(f"meter_initial_invocation_counter = {invocation_counter}")
# we are not reusing the socket as of now. We just need to give the meter some time to
# close the connection on its side
sleep(1)
def test_obis_from_dotted(self):
obis = cosem.Obis.from_dotted("1.0.1.8.0.255")
assert obis == cosem.Obis(1, 0, 1, 8, 0, 255)
def test_obis_to_dotted(self):
obis = cosem.Obis(1, 0, 1, 8, 0, 255)
assert obis.dotted_repr() == "1.0.1.8.0.255"
def test_obis_to_bytes(self):
data = b"\x00\x00+\x01\x00\xff"
assert cosem.Obis(0, 0, 43, 1, 0, 255).to_bytes() == data
def test_obis_from_bytes(self):
data = b"\x00\x00+\x01\x00\xff"
assert cosem.Obis.from_bytes(data) == cosem.Obis(0, 0, 43, 1, 0, 255)
def test_obis_to_verbose(self):
obis = cosem.Obis(1, 0, 1, 8, 0, 255)
assert obis.verbose_repr() == "1-0:1.8.0*255"
