GET Command#
- async pysnmp.hlapi.asyncio.getCmd(snmpEngine: SnmpEngine, authData: pysnmp.hlapi.asyncio.auth.CommunityData | pysnmp.hlapi.asyncio.auth.UsmUserData, transportTarget: AbstractTransportTarget, contextData: ContextData, *varBinds, **options) tuple[pysnmp.proto.errind.ErrorIndication, pysnmp.proto.rfc1902.Integer32 | int, pysnmp.proto.rfc1902.Integer32 | int, tuple[pysnmp.smi.rfc1902.ObjectType]] #
Creates a generator to perform SNMP GET query.
When iterator gets advanced by
asyncio
main loop, SNMP GET request is send (RFC 1905#section-4.2.1). The iterator yieldsasyncio.get_running_loop().create_future()
which gets done whenever response arrives or error occurs.- Parameters:
snmpEngine (
SnmpEngine
) – Class instance representing SNMP engine.authData (
CommunityData
orUsmUserData
) – Class instance representing SNMP credentials.transportTarget (
UdpTransportTarget
orUdp6TransportTarget
) – Class instance representing transport type along with SNMP peer address.contextData (
ContextData
) – Class instance representing SNMP ContextEngineId and ContextName values.*varBinds (
ObjectType
) – One or more class instances representing MIB variables to place into SNMP request.
- Other Parameters:
**options –
Request options:
lookupMib - load MIB and resolve response MIB variables at the cost of slightly reduced performance. Default is True.
- Yields:
errorIndication (
ErrorIndication
) – True value indicates SNMP engine error.errorStatus (str) – True value indicates SNMP PDU error.
errorIndex (int) – Non-zero value refers to varBinds[errorIndex-1]
varBinds (tuple) – A sequence of
ObjectType
class instances representing MIB variables returned in SNMP response.
- Raises:
PySnmpError – Or its derivative indicating that an error occurred while performing SNMP operation.
Examples
>>> import asyncio >>> from pysnmp.hlapi.asyncio import * >>> >>> async def run(): ... errorIndication, errorStatus, errorIndex, varBinds = await getCmd( ... SnmpEngine(), ... CommunityData('public'), ... UdpTransportTarget(('demo.pysnmp.com', 161)), ... ContextData(), ... ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)) ... ) ... print(errorIndication, errorStatus, errorIndex, varBinds) >>> >>> asyncio.run(run()) (None, 0, 0, [ObjectType(ObjectIdentity(ObjectName('1.3.6.1.2.1.1.1.0')), DisplayString('SunOS zeus.pysnmp.com 4.1.3_U1 1 sun4m'))]) >>>