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from meetingtools.ac.api import ACPClient
import time
from meetingtools.apps.cluster.models import acc_for_user
from django.core.cache import cache
from Queue import Queue
import logging
from django.contrib.auth.models import User
_pools = {}
MAXCALLS = 10
MAXIDLE = 10
class ClientPool(object):
def __init__(self,acc,maxsize=0,increment=2):
self._q = Queue(maxsize)
self._acc = acc
self._increment = increment
def allocate(self):
now = time.time()
api = None
while not api:
if self._q.empty():
for i in range(1,self._increment):
logging.debug("adding instance %d" % i)
api = ACPClient(self._acc.api_url,self._acc.user,self._acc.password,cpool=self)
self._q.put_nowait(api)
api = self._q.get()
if api and (api.age > MAXCALLS or now - api.lastused > MAXIDLE):
api = None
return api
# with ac_api_client(acc) as api
# ...
def ac_api_client(o):
acc = o
logging.debug("ac_api_client(%s)" % repr(o))
if hasattr(o,'user') and isinstance(getattr(o,'user'),User):
acc = acc_for_user(getattr(o,'user'))
elif hasattr(o,'acc'):
acc = getattr(o,'acc')
tag = 'ac_api_client_%d' % acc.id
pool = _pools.get(tag)
if pool is None:
pool = ClientPool(acc,maxsize=30)
_pools[tag] = pool
return pool.allocate()
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