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Ich verwende eines der Beispiele für GetNext Operation für einen SNMPWalk der Struktur. Ich verwende die asynchrone Variante, um die OIDs zu sammeln -Asynchrone getNext Fehler beim Verlassen der Tabelle
# GETNEXT Command Generator
from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.proto import rfc1902
# ((authData, transportTarget, varNames), ...)
targets = (
# 1-st target (SNMPv1)
(cmdgen.CommunityData('test-agent-1', 'public'),
cmdgen.UdpTransportTarget(('localhost', 161)),
(rfc1902.ObjectName((1,3,6,1,2,1)), rfc1902.ObjectName((1,3,6,1,3,1)))),
# 2-nd target (SNMPv2c)
(cmdgen.CommunityData('test-agent-2', 'public', 1),
cmdgen.UdpTransportTarget(('localhost', 161)),
(rfc1902.ObjectName((1,3,6,1,2,1,2)),)),
)
def cbFun(
sendRequestHandle, errorIndication, errorStatus, errorIndex,
varBindTable, (varBindHead, authData, transportTarget)
):
if errorIndication:
print 'SNMP engine error', errorIndication
return 1
if errorStatus:
print 'SNMP error %s at %s' % (errorStatus, errorIndex)
return 1
varBindTableRow = varBindTable[-1]
for idx in range(len(varBindTableRow)):
name, val = varBindTableRow[idx]
if val is not None and varBindHead[idx].isPrefixOf(name):
# still in table
break
else:
print 'went out of table at %s' % (name,)
return
for varBindRow in varBindTable:
for oid, val in varBindRow:
if val is None:
print oid.prettyPrint()
else:
print '%s = %s' % (oid.prettyPrint(), val.prettyPrint())
return 1 # continue table retrieval
cmdGen = cmdgen.CommandGenerator()
for authData, transportTarget, varNames in targets:
cmdGen.asyncNextCmd(
authData, transportTarget, varNames,
# User-space callback function and its context
(cbFun, (varNames, authData, transportTarget))
)
cmdGen.snmpEngine.transportDispatcher.runDispatcher()
Ich bekomme die OIDs, die ich brauche; aber wenn es auf den Tisch und kehrt von cbFun erlischt, der Dispatcher in der letzten Zeile einen Fehler wirft, die ich nicht in der Lage bin zu lösen, sieht die Ausgabe so etwas wie -
... (some 1.3.6.1.2.1.* stuff)
1.3.6.1.2.1.2.2.1.22.1 = 0.0
1.3.6.1.2.1.2.2.1.22.2 = 0.0
1.3.6.1.2.1.2.2.1.22.3 = 0.0
went out of table at (1, 3, 6, 1, 2, 1, 3, 1, 1, 1, 2, 1, 212, 201, 49, 186)
Traceback (most recent call last):
File "asyncsnmpwalk.py", line 55, in <module>
cmdGen.snmpEngine.transportDispatcher.runDispatcher()
File "/var/lib/python-support/python2.5/pysnmp/v4/carrier/asynsock/dispatch.py", line 61, in runDispatcher
self.handleTimerTick(time())
File "/var/lib/python-support/python2.5/pysnmp/v4/carrier/base.py", line 81, in handleTimerTick
self.__timerCbFun(timeNow)
File "/var/lib/python-support/python2.5/pysnmp/v4/entity/engine.py", line 60, in __receiveTimerTickCbFun
self.msgAndPduDsp.receiveTimerTick(self, timeNow)
File "/var/lib/python-support/python2.5/pysnmp/v4/proto/rfc3412.py", line 491, in receiveTimerTick
self.__cacheExpire(snmpEngine, self.__expireRequest)
File "/var/lib/python-support/python2.5/pysnmp/v4/proto/rfc3412.py", line 56, in __cacheExpire
if cbFun(snmpEngine, cachedParams):
File "/var/lib/python-support/python2.5/pysnmp/v4/proto/rfc3412.py", line 486, in __expireRequest
cbCtx
File "/var/lib/python-support/python2.5/pysnmp/v4/entity/rfc3413/cmdgen.py", line 77, in processResponsePdu
(self.processResponsePdu, (cbFun, cbCtx))
File "/var/lib/python-support/python2.5/pysnmp/v4/entity/rfc3413/cmdgen.py", line 164, in _sendPdu
(processResponsePdu, float(timeout)/100 + time.time(), cbCtx)
File "/var/lib/python-support/python2.5/pysnmp/v4/proto/rfc3412.py", line 161, in sendPdu
sendPduHandle
File "/var/lib/python-support/python2.5/pysnmp/v4/proto/mpmod/rfc2576.py", line 89, in prepareOutgoingMessage
scopedPDU
File "/var/lib/python-support/python2.5/pysnmp/v4/proto/secmod/rfc2576.py", line 78, in generateRequestMsg
errorIndication = 'unknownCommunityName'
pysnmp.proto.error.StatusInformation: {'errorIndication': 'unknownCommunityName'}