def set(self, oid, value):
"""Use PySNMP to perform an SNMP SET operation on a single object.
:param oid: The OID of the object to set.
:param value: The value of the object to set.
:raises: SNMPFailure if an SNMP request fails.
"""
try:
snmp_gen = snmp.setCmd(self.snmp_engine,
self._get_auth(write_mode=True),
self._get_transport(),
self._get_context(),
snmp.ObjectType(
snmp.ObjectIdentity(oid), value))
except snmp_error.PySnmpError as e:
raise exception.SNMPFailure(operation="SET", error=e)
error_indication, error_status, error_index, var_binds = next(snmp_gen)
if error_indication:
# SNMP engine-level error.
raise exception.SNMPFailure(operation="SET",
error=error_indication)
if error_status:
# SNMP PDU error.
raise exception.SNMPFailure(operation="SET",
error=error_status.prettyPrint())
def get(self, oid):
"""Use PySNMP to perform an SNMP GET operation on a single object.
:param oid: The OID of the object to get.
:raises: SNMPFailure if an SNMP request fails.
:returns: The value of the requested object.
"""
try:
snmp_gen = snmp.getCmd(self.snmp_engine,
self._get_auth(),
self._get_transport(),
self._get_context(),
snmp.ObjectType(snmp.ObjectIdentity(oid)))
except snmp_error.PySnmpError as e:
raise exception.SNMPFailure(operation="GET", error=e)
error_indication, error_status, error_index, var_binds = next(snmp_gen)
if error_indication:
# SNMP engine-level error.
raise exception.SNMPFailure(operation="GET",
error=error_indication)
if error_status:
# SNMP PDU error.
raise exception.SNMPFailure(operation="GET",
error=error_status.prettyPrint())
# We only expect a single value back
name, val = var_binds[0]
return val
def set(self, oid, value):
"""Use PySNMP to perform an SNMP SET operation on a single object.
:param oid: The OID of the object to set.
:param value: The value of the object to set.
:raises: SNMPFailure if an SNMP request fails.
"""
try:
results = self.cmd_gen.setCmd(self._get_auth(),
self._get_transport(),
(oid, value))
except snmp_error.PySnmpError as e:
raise exception.SNMPFailure(operation="SET", error=e)
error_indication, error_status, error_index, var_binds = results
if error_indication:
# SNMP engine-level error.
raise exception.SNMPFailure(operation="SET",
error=error_indication)
if error_status:
# SNMP PDU error.
raise exception.SNMPFailure(operation="SET",
error=error_status.prettyPrint())
def get_next(self, oid):
"""Use PySNMP to perform an SNMP GET NEXT operation on a table object.
:param oid: The OID of the object to get.
:raises: SNMPFailure if an SNMP request fails.
:returns: A list of values of the requested table object.
"""
try:
results = self.cmd_gen.nextCmd(self._get_auth(),
self._get_transport(), oid)
except snmp_error.PySnmpError as e:
raise exception.SNMPFailure(operation="GET_NEXT", error=e)
error_indication, error_status, error_index, var_bind_table = results
if error_indication:
# SNMP engine-level error.
raise exception.SNMPFailure(operation="GET_NEXT",
error=error_indication)
if error_status:
# SNMP PDU error.
raise exception.SNMPFailure(operation="GET_NEXT",
error=error_status.prettyPrint())
return [val for row in var_bind_table for name, val in row]
def get_next(self, oid):
"""Use PySNMP to perform an SNMP GET NEXT operation on a table object.
:param oid: The OID of the object to get.
:raises: SNMPFailure if an SNMP request fails.
:returns: A list of values of the requested table object.
"""
try:
snmp_gen = snmp.nextCmd(self.snmp_engine,
self._get_auth(),
self._get_transport(),
self._get_context(),
snmp.ObjectType(snmp.ObjectIdentity(oid)),
lexicographicMode=False)
except snmp_error.PySnmpError as e:
raise exception.SNMPFailure(operation="GET_NEXT", error=e)
vals = []
for (error_indication, error_status, error_index,
var_binds) in snmp_gen:
if error_indication:
# SNMP engine-level error.
raise exception.SNMPFailure(operation="GET_NEXT",
error=error_indication)
if error_status:
# SNMP PDU error.
raise exception.SNMPFailure(operation="GET_NEXT",
error=error_status.prettyPrint())
# this is not a table, but a table row
# e.g. 1-D array of tuples
_name, value = var_binds[0]
vals.append(value)
return vals
def test__inspect_hardware_exception(self, get_irmc_report_mock, scci_mock,
_get_mac_addresses_mock):
report = 'fake_report'
get_irmc_report_mock.return_value = report
side_effect = exception.SNMPFailure("fake exception")
scci_mock.get_essential_properties.side_effect = side_effect
irmc_inspect.scci.SCCIInvalidInputError = Exception
irmc_inspect.scci.SCCIClientError = Exception
with task_manager.acquire(self.context, self.node.uuid,
shared=True) as task:
self.assertRaises(exception.HardwareInspectionFailure,
irmc_inspect._inspect_hardware, task.node)
get_irmc_report_mock.assert_called_once_with(task.node)
self.assertFalse(_get_mac_addresses_mock.called)
def get(self, oid):
"""Use PySNMP to perform an SNMP GET operation on a single object.
:param oid: The OID of the object to get.
:raises: SNMPFailure if an SNMP request fails.
:returns: The value of the requested object.
"""
results = self.cmd_gen.getCmd(self._get_auth(), self._get_transport(),
oid)
error_indication, error_status, error_index, var_binds = results
if error_indication:
# SNMP engine-level error.
raise exception.SNMPFailure(operation="GET",
error=error_indication)
if error_status:
# SNMP PDU error.
raise exception.SNMPFailure(operation="GET",
error=error_status.prettyPrint())
# We only expect a single value back
name, val = var_binds[0]
return val
def test__set_power_state_snmp_exception(self,
attach_boot_iso_if_needed_mock,
get_irmc_client_mock,
_wait_power_state_mock):
target_state = states.SOFT_REBOOT
_wait_power_state_mock.side_effect = exception.SNMPFailure(
"fake exception")
with task_manager.acquire(self.context, self.node.uuid,
shared=True) as task:
self.assertRaises(exception.IRMCOperationError,
irmc_power._set_power_state, task, target_state)
attach_boot_iso_if_needed_mock.assert_called_once_with(task)
get_irmc_client_mock.return_value.assert_called_once_with(
irmc_power.STATES_MAP[target_state])
_wait_power_state_mock.assert_called_once_with(
task, states.SOFT_POWER_OFF, timeout=None)