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|
"""
Sequential queries
++++++++++++++++++
Send multiple SNMP GET requests one by one using the following options:
* with SNMPv2c, community 'public'
* over IPv4/UDP
* to multiple Agents at demo.snmplabs.com
* for instance of SNMPv2-MIB::sysDescr.0 MIB object
* based on asyncio I/O framework
Functionally similar to:
| $ snmpget -v2c -c public demo.snmplabs.com:1161 SNMPv2-MIB::sysDescr.0
| $ snmpget -v2c -c public demo.snmplabs.com:2161 SNMPv2-MIB::sysDescr.0
| $ snmpget -v2c -c public demo.snmplabs.com:3161 SNMPv2-MIB::sysDescr.0
"""#
import asyncio
from pysnmp.hlapi.v1arch.asyncio import *
@asyncio.coroutine
def getone(snmpDispatcher, hostname):
iterator = getCmd(
snmpDispatcher,
CommunityData('public'),
UdpTransportTarget(hostname),
ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0))
)
errorIndication, errorStatus, errorIndex, varBinds = yield from iterator
if errorIndication:
print(errorIndication)
elif errorStatus:
print('%s at %s' % (
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex) - 1][0] or '?'
)
)
else:
for varBind in varBinds:
print(' = '.join([x.prettyPrint() for x in varBind]))
@asyncio.coroutine
def getall(snmpDispatcher, hostnames):
for hostname in hostnames:
yield from getone(snmpDispatcher, hostname)
snmpDispatcher = SnmpDispatcher()
loop = asyncio.get_event_loop()
loop.run_until_complete(
getall(
snmpDispatcher, [
('demo.snmplabs.com', 1161),
('demo.snmplabs.com', 2161),
('demo.snmplabs.com', 3161)
]
)
)
|
