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Adapt to MongoDB 2.4 changes #6

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Merged
merged 1 commit into from
Apr 22, 2013
Merged

Adapt to MongoDB 2.4 changes #6

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15 changes: 10 additions & 5 deletions mongodb.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

import collectd
from pymongo import Connection
from distutils.version import StrictVersion as V


class MongoDB(object):
Expand Down Expand Up @@ -41,6 +42,9 @@ def do_server_status(self):
db.authenticate(self.mongo_user, self.mongo_password)
server_status = db.command('serverStatus')

version = server_status['version']
at_least_2_4 = V(version) >= V('2.4.0')

# operations
for k, v in server_status['opcounters'].items():
self.submit('total_operations', k, v)
Expand All @@ -63,23 +67,24 @@ def do_server_status(self):
self.lockTotalTime = server_status['globalLock']['totalTime']
self.lockTime = server_status['globalLock']['lockTime']


# indexes
accesses = None
misses = None
index_counters = server_status['indexCounters'] if at_least_2_4 else server_status['indexCounters']['btree']

if self.accesses is not None:
accesses = server_status['indexCounters']['btree']['accesses'] - self.accesses
accesses = index_counters['accesses'] - self.accesses
if accesses < 0:
accesses = None
misses = (server_status['indexCounters']['btree']['misses'] or 0) - (self.misses or 0)
misses = (index_counters['misses'] or 0) - (self.misses or 0)
if misses < 0:
misses = None
if accesses and misses is not None:
self.submit('cache_ratio', 'cache_misses', int(misses * 100 / float(accesses)))
else:
self.submit('cache_ratio', 'cache_misses', 0)
self.accesses = server_status['indexCounters']['btree']['accesses']
self.misses = server_status['indexCounters']['btree']['misses']
self.accesses = index_counters['accesses']
self.misses = index_counters['misses']

for mongo_db in self.mongo_db:
db = con[mongo_db]
Expand Down