diff options
Diffstat (limited to 'examples/hlapi/twisted/manager/cmdgen/multiple-concurrent-async-queries.py')
-rw-r--r-- | examples/hlapi/twisted/manager/cmdgen/multiple-concurrent-async-queries.py | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/examples/hlapi/twisted/manager/cmdgen/multiple-concurrent-async-queries.py b/examples/hlapi/twisted/manager/cmdgen/multiple-concurrent-async-queries.py new file mode 100644 index 0000000..5349e97 --- /dev/null +++ b/examples/hlapi/twisted/manager/cmdgen/multiple-concurrent-async-queries.py @@ -0,0 +1,56 @@ +""" +Concurrent queries +++++++++++++++++++ + +Send multiple SNMP GET requests at once using the following options: + +* with SNMPv2c, community 'public' +* over IPv4/UDP +* to an Agent at demo.snmplabs.com:161 +* for two instances of SNMPv2-MIB::sysDescr.0 and SNMPv2-MIB::sysLocation.0 + MIB object, +* based on Twisted I/O framework + +Functionally similar to: + +| $ snmpget -v2c -c public demo.snmplabs.com SNMPv2-MIB::sysDescr.0 +| $ snmpget -v2c -c public demo.snmplabs.com SNMPv2-MIB::sysLocation.0 + +"""# +from twisted.internet.defer import DeferredList +from twisted.internet.task import react +from pysnmp.hlapi.twisted import * + +def success((errorStatus, errorIndex, varBinds), hostname): + if errorStatus: + print('%s: %s at %s' % ( + hostname, + errorStatus.prettyPrint(), + errorIndex and varBinds[int(errorIndex)-1][0] or '?' + ) + ) + else: + for varBind in varBinds: + print(' = '.join([ x.prettyPrint() for x in varBind ])) + +def failure(errorIndication, hostname): + print('%s failure: %s' % (hostname, errorIndication)) + +def getSystem(reactor, hostname): + snmpEngine = SnmpEngine() + + def getScalar(objectType): + d = getCmd(snmpEngine, + CommunityData('public', mpModel=0), + UdpTransportTarget((hostname, 161)), + ContextData(), + objectType) + d.addCallback(success, hostname).addErrback(failure, hostname) + return d + + return DeferredList( + [getScalar(ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0))), + getScalar(ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0)))] + ) + +react(getSystem, ['demo.snmplabs.com']) |