async def _init_device(self) -> None:
"""Check if the device sends counters."""
oids = tuple(self._iterate_oids(OIDS.values()))
try:
request_args = [
self._snmp_engine,
hlapi.CommunityData("public", mpModel=0),
hlapi.UdpTransportTarget((self._host, self._port),
timeout=2,
retries=10),
hlapi.ContextData(),
]
except PySnmpError as err:
raise ConnectionError(err) from err
errindication, errstatus, errindex, _ = await hlapi.getCmd(
*request_args, *oids)
if errindication:
raise SnmpError(errindication)
if errstatus:
oids = tuple(self._iterate_oids(OIDS_WITHOUT_COUNTERS.values()))
errindication, errstatus, errindex, _ = await hlapi.getCmd(
*request_args, *oids)
if errindication:
raise SnmpError(errindication)
if errstatus:
raise SnmpError(f"{errstatus}, {errindex}")
_LOGGER.debug("The printer %s doesn't send 'counters'", self._host)
self._counters = False
self._oids = oids
self._need_init = False
async def _get_data(self):
"""Retreive data from printer."""
raw_data = {}
snmp_engine = hlapi.SnmpEngine()
try:
request_args = [
snmp_engine,
hlapi.CommunityData("public", mpModel=0),
hlapi.UdpTransportTarget((self._host, self._port),
timeout=2,
retries=10),
hlapi.ContextData(),
]
errindication, errstatus, errindex, restable = await hlapi.getCmd(
*request_args, *self._oids)
# unconfigure SNMP engine
lcd.unconfigure(snmp_engine, None)
except PySnmpError as error:
self.data = {}
raise ConnectionError(error)
if errindication:
self.data = {}
raise SnmpError(errindication)
if errstatus:
self.data = {}
raise SnmpError(f"{errstatus}, {errindex}")
for resrow in restable:
if str(resrow[0]) in OIDS_HEX:
# asOctet gives bytes data b'\x00\x01\x04\x00\x00\x03\xf6\xff'
temp = resrow[-1].asOctets()
# convert to string without checksum FF at the end, gives 000104000003f6
temp = "".join(["%.2x" % x for x in temp])[0:-2]
# split to 14 digits words in list, gives ['000104000003f6']
temp = [
temp[ind:ind + 2 * self._split]
for ind in range(0, len(temp), 2 * self._split)
]
# map sensors names to OIDs
raw_data[str(resrow[0])] = temp
else:
raw_data[str(resrow[0])] = str(resrow[-1])
return raw_data
async def _get_data(self):
"""Retreive data from printer."""
raw_data = {}
if not self._snmp_engine:
self._snmp_engine = hlapi.SnmpEngine()
try:
request_args = [
self._snmp_engine,
hlapi.CommunityData("public", mpModel=0),
hlapi.UdpTransportTarget(
(self._host, self._port), timeout=2, retries=10
),
hlapi.ContextData(),
]
errindication, errstatus, errindex, restable = await hlapi.getCmd(
*request_args, *self._oids
)
except PySnmpError as err:
self.data = {}
raise ConnectionError(err) from err
if errindication:
self.data = {}
raise SnmpError(errindication)
if errstatus:
self.data = {}
raise SnmpError(f"{errstatus}, {errindex}")
for resrow in restable:
if str(resrow[0]) in OIDS_HEX:
# asOctet gives bytes data b'c\x01\x04\x00\x00\x00\x01\x11\x01\x04\x00\
# x00\x05,A\x01\x04\x00\x00"\xc41\x01\x04\x00\x00\x00\x01o\x01\x04\x00\
# x00\x19\x00\x81\x01\x04\x00\x00\x00F\x86\x01\x04\x00\x00\x00\n\xff'
temp = resrow[-1].asOctets()
# convert to string without checksum FF at the end, gives
# '630104000000011101040000052c410104000022c4310104000000016f01040000190
# 0810104000000468601040000000a'
temp = "".join(["%.2x" % x for x in temp])[0:-2]
# split to 14 digits words in list, gives ['63010400000001',
# '1101040000052c', '410104000022c4', '31010400000001',
# '6f010400001900', '81010400000046', '8601040000000a']
temp = [temp[ind : ind + 14] for ind in range(0, len(temp), 14)]
# map sensors names to OIDs
raw_data[str(resrow[0])] = temp
else:
raw_data[str(resrow[0])] = str(resrow[-1])
# for legacy printers
for resrow in restable:
if str(resrow[0]) == OIDS[ATTR_MAINTENANCE]:
# asOctet gives bytes data
temp = resrow[-1].asOctets()
# convert to string without checksum FF at the end, gives
# 'a101020414a201020c14a301020614a401020b14'
temp = "".join(["%.2x" % x for x in temp])[0:-2]
if self._legacy_printer(temp):
self._legacy = True
# split to 10 digits words in list, gives ['a101020414',
# 'a201020c14', 'a301020614', 'a401020b14']
temp = [temp[ind : ind + 10] for ind in range(0, len(temp), 10)]
# map sensors names to OIDs
raw_data[str(resrow[0])] = temp
break
return raw_data