class SnapshotFile (AbstractMibInstrumController):
openedQueue = []
maxQueueEntries = 15 # max number of open text and index files
def __init__(self, textFile, textParser):
self.__textParser = textParser
self.__textFile = textFile
self._db = Database(self.__textFile, self.__textParser)
def indexText(self):
self._db.create()
return self
def close(self):
self._db.close()
def openDb(self):
if not self._db.isOpen():
if len(SnapshotFile.openedQueue) > self.maxQueueEntries:
SnapshotFile.openedQueue[0].close()
del SnapshotFile.openedQueue[0]
SnapshotFile.openedQueue.append(self)
self._db.open()
def processVarBinds(self, varBinds, nextFlag=False, setFlag=False):
self.openDb()
rspVarBinds = []
for oid,_ in varBinds:
textOid = str( univ.OctetString( oid2str(oid) ) )
if nextFlag:
try:
(_oid, _, _tag, _val) = self._db.lookup_next( textOid )
subtreeFlag = False
except KeyError:
rspVarBinds.append((oid, exval.endOfMib))
continue
else:
try:
(_oid, subtreeFlag, _tag, _val) = self._db.lookup( textOid )
subtreeFlag, int(subtreeFlag), True
except KeyError:
rspVarBinds.append((oid, exval.noSuchInstance))
continue
# _oid = parser.evaluateOid(_oid)
# _,_,_val = parser.evaluateValue(_oid,_tag,_val)
rspVarBinds.append ( ( _oid, _val ) )
return rspVarBinds
def __str__(self):
return str(self._db)
