OverflowError: MongoDB can only handle up to 8-byte ints

[adarshkr06]

Hi,

I have followed the steps given in the ReadMe.md to install and run the RouteFlow.
When run either rftest1 or rftest2, i get this error on the console:

ERROR:core:Exception while handling OpenFlowNexus!AggregateFlowStatsReceived...
Traceback (most recent call last):
File "/home/controller/RouteFlow/pox/pox/lib/revent/revent.py", line 234, in raiseEventNoErrors
return self.raiseEvent(event, _args, *_kw)
File "/home/controller/RouteFlow/pox/pox/lib/revent/revent.py", line 281, in raiseEvent
rv = event._invoke(handler, _args, *_kw)
File "/home/controller/RouteFlow/pox/pox/lib/revent/revent.py", line 159, in _invoke
return handler(self, _args, *kw)
File "/home/controller/RouteFlow/pox/ext/rfstats.py", line 148, in handle_aggregate_flow_stats
db.update(dp_id, "switch", aggregate=StatsDB.create_aggregate_stats_dict(event.stats))
File "/home/controller/RouteFlow/pox/ext/rfstats.py", line 44, in update
self.collection.update({"id": id}, self.db[id], upsert=True)
File "/usr/lib/python2.7/dist-packages/pymongo/collection.py", line 409, in update
_check_keys, self.__uuid_subtype), safe)
OverflowError: MongoDB can only handle up to 8-byte ints

In spite of this error, it works as expected but few times it doesn't [Especially when i run RIP and OSPF].

It would be highly appreciated if you could you please tell me more about this error and steps to fix it?

Thanks in advance.

Sincerely,
Adarsh KR

[yhsu1126]

Oh I came along with the same issue too

I modify the code inside pox/etc/rfstat.py to modify it.

I don't know if it's a good approach, since it makes the mongo db doesn't record any useful data

the original code looks like this

class StatsDB: def __init__(self): self.db = {} self.connection = pymongo.Connection() self.collection = self.connection.db.rfstats

`def update(self, id_, type_, links=None, **data):
    if id_ not in self.db:
        if links is None:
            links = []
        self.db[id_] = {
            "type": type_,
            "links": links,
            "data": {},}
    else:
        self.db[id_]["type"] = type_
        if links is not None:
            self.db[id_]["links"] = links

    for k, v in data.items():
        self.db[id_]["data"][k] = v

    self.db[id_]["_id"] = id_
    self.collection.update({"_id": id_}, self.db[id_], upsert=True)

def delete(self, id_):
    try:
        del self.db[id_]
        self.collection.remove(id_)
        return True
    except:
        return False`

---

What I found is that when the switch push the statistic data, the package data count is bigger than 8 byte int. which cause the error

this is the code that I fix it

---

class StatsDB: def __init__(self): self.db = {} self.connection = pymongo.Connection() self.collection = self.connection.db.rfstats

`def update(self, id_, type_, links=None, **data):
    if id_ not in self.db:
        if links is None:
            links = []
        self.db[id_] = {
            "type": type_,
            "links": links,
            "data": {},}
    else:
        self.db[id_]["type"] = type_
        if links is not None:
            self.db[id_]["links"] = links

    for k, v in data.items():
        self.db[id_]["data"][k] = v

    self.db[id_]["_id"] = id_
    try:
    for flow in self.db[id_]["data"]["flows"]:
            if flow["packet_count"] > long(9223372036854775807):
                flow["packet_count"] = 0
        self.collection.update({"_id": id_}, self.db[id_], upsert=True)
    except KeyError:
        self.collection.update({"_id": id_}, self.db[id_], upsert=True)

def delete(self, id_):
    try:
        del self.db[id_]
        self.collection.remove(id_)
        return True
    except:
        return False`

---