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# SNMP entity context
from pysnmp import error
class SnmpContext:
def __init__(self, snmpEngine, contextEngineId=None):
self.contextEngineId = contextEngineId
self.contextNames = {
'': snmpEngine.msgAndPduDsp.mibInstrumController # Default name
}
def registerContextName(self, contextName, mibInstrum=None):
if self.contextNames.has_key(contextName):
raise error.PySnmpError(
'Duplicate contextName %s' % contextName
)
if mibInstrum is None:
self.contextName[contextName] = self.contextName['']
else:
self.contextName[contextName] = mibInstrum
def unregisterContextName(self, contextName):
if self.contextNames.has_key(contextName):
del self.contextName[contextName]
def getMibInstrum(self, contextName):
if not self.contextNames.has_key(contextName):
raise error.PySnmpError(
'Missing contextName %s' % contextName
)
else:
return self.contextNames[contextName]
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