/usr/share/doc/python-pysnmp4-doc/examples/smi/instrum.py is in python-pysnmp4-doc 4.2.5-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | # Managed Objects implementation
from pysnmp.smi import builder
# MIB Builder is normally pre-created by SNMP engine
mibBuilder = builder.MibBuilder()
#
# This may be done in a stand-alone file and then loaded up
# by SNMP Agent
#
# A base class for a custom Managed Object
MibScalarInstance, = mibBuilder.importSymbols(
'SNMPv2-SMI', 'MibScalarInstance'
)
# Managed object specification
sysLocation, = mibBuilder.importSymbols('SNMPv2-MIB', 'sysLocation')
# Custom Managed Object
class MySysLocationInstance(MibScalarInstance):
def readGet(self, name, *args):
# Just return a custom value
return name, self.syntax.clone('The Leaky Cauldron')
sysLocationInstance = MySysLocationInstance(
sysLocation.name, (0,), sysLocation.syntax
)
# Register Managed Object with a MIB tree
mibBuilder.exportSymbols(
# '__' prefixed MIB modules take precedence on indexing
'__MY-LOCATION-MIB', sysLocationInstance=sysLocationInstance
)
if __name__ == '__main__':
#
# This is what is done internally by Agent.
#
from pysnmp.smi import instrum, exval
mibInstrum = instrum.MibInstrumController(mibBuilder)
print('Remote manager read access to MIB instrumentation (table walk)')
oid, val = (), None
while 1:
oid, val = mibInstrum.readNextVars(((oid, val),))[0]
if exval.endOfMib.isSameTypeWith(val):
break
print(oid, val.prettyPrint())
|