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"""
Concurrent queries
++++++++++++++++++
Send multiple SNMP GET requests at once using the following options:
* with SNMPv2c, community 'public'
* over IPv4/UDP
* to multiple Agents at demo.pysnmp.com
* for instance of SNMPv2-MIB::sysDescr.0 MIB object
* based on asyncio I/O framework
Functionally similar to:
| $ snmpget -v2c -c public demo.pysnmp.com:161 SNMPv2-MIB::sysDescr.0
| $ snmpget -v2c -c public demo.pysnmp.com:161 SNMPv2-MIB::sysDescr.0
| $ snmpget -v2c -c public demo.pysnmp.com:161 SNMPv2-MIB::sysDescr.0
""" #
import asyncio
from pysnmp.hlapi.v1arch.asyncio import *
async def getone(snmpDispatcher, hostname):
iterator = await get_cmd(
snmpDispatcher,
CommunityData("public"),
await UdpTransportTarget.create(hostname),
ObjectType(ObjectIdentity("SNMPv2-MIB", "sysDescr", 0)),
)
errorIndication, errorStatus, errorIndex, varBinds = iterator
if errorIndication:
print(errorIndication)
elif errorStatus:
print(
"{} at {}".format(
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex) - 1][0] or "?",
)
)
else:
for varBind in varBinds:
print(" = ".join([x.prettyPrint() for x in varBind]))
async def main():
with SnmpDispatcher() as snmpDispatcher:
await asyncio.gather(
getone(snmpDispatcher, ("demo.pysnmp.com", 161)),
getone(snmpDispatcher, ("demo.pysnmp.com", 161)),
getone(snmpDispatcher, ("demo.pysnmp.com", 161)),
)
asyncio.run(main())
|
