def memcache_cache(f, *args, **kwargs):
# check if this set of args / kwargs / f is in memcache
c = memcache_client.get('key_counter') or 0
# create our key using function name and args
key = '%s_%s_%s_%s' % (c,f.__name__,
'_'.join([str(x) for x in args
if isinstance(x,(basestring,unicode))]),
'_'.join(['%s.%s' % (x,kwargs[x])
for x in sorted(kwargs.keys())]))
key = key.replace(' ','')
# fingers crossed
cherrypy.log('memcache key: %s' % key)
r = memcache_client.get(key)
# miss =/
if not r:
r = f(*args,**kwargs)
# update memcache
cr = zlib.compress(r)
cherrypy.log('writing compressed to memcache %s:%s'
% (len(r),len(cr)))
memcache_client.set(key,cr)
else:
r = zlib.decompress(r)
cherrypy.log('memcache hit')
return r
return to_return
# we want to make sure and listen on commits, if a commit
# happens we need to increment the memcache key counter
def increment_memcache_counter(*args,**kwargs):
cherrypy.log('incrementing memcache')
memcache_client.incr("key_counter")
# add the listener
event.listen(m.session, "after_commit", increment_memcache_counter)
# make sure the counter exists
r = memcache_client.get('key_counter')
if not r:
memcache_client.set('key_counter',0)
else:
memcache_client.incr('key_counter')
def node_most_recent_relative_update(node_datas):
# go down through the relatives, find the newest one
def c(nds):
newest = nds.get('epoch_updated_at')
for node_data in nds.get('_relatives',[]):
f = c(node_data)
if f > newest:
newest = f
return newest
newest = c(node_datas)
if not newest:
return 0