def sget(self, oids):
assert self.sessp
req = self._create_request(const.SNMP_MSG_GET, oids)
response = ctypes.POINTER(types.netsnmp_pdu)()
if lib.snmp_sess_synch_response(self.sessp, req, byref(response)):
raise SnmpError("snmp_sess_synch_response")
result = util.decode_result(response.contents)
lib.snmp_free_pdu(response)
return result
def _callback(self, operation, sp, reqid, pdu, magic):
try:
if reqid not in self._requests:
return 1
cb, args = self._requests.pop(reqid)
if operation == const.NETSNMP_CALLBACK_OP_RECEIVED_MESSAGE:
result = util.decode_result(pdu.contents)
cb(result, *args)
elif operation == const.NETSNMP_CALLBACK_OP_TIMED_OUT:
cb(SnmpTimeout(), *args)
else:
raise Exception("Unexpected operation: %d" % operation)
except Exception, ex:
# This shouldn't happen, but just in case...
# TODO: Probably should use the logging api instead.
sys.stderr.write("Exception in _callback: %s\n" % (ex,))
raise
