def getBagInstance(userID, lensID, update = False):
cacheKey = userBagCacheKey(userID, lensID)
bagInstance = memcache.get(cacheKey)
if bagInstance is None or update:
bagInstance = userLensBag.all().filter('userID = ', userID).filter('lensID = ', lensID).get()
memcache.set(cacheKey, bagInstance)
return bagInstance
def getAllUses(update=False):
#get all uses from all lenses
currentUses = memcache.get('allLensUses')
if currentUses is None or update:
allInstances = userLensBag.all()
currentUses = parseUsesFromBag(allInstances)
memcache.set('allLensUses', currentUses)
return currentUses
def getLensUses(lensID, update = False):
#get only uses associated with this lensID
thisLensUses = memcache.get('lensUsesFor' + lensID)
if thisLensUses is None or update:
allInstances = userLensBag.all().filter('lensID =', lensID)
thisLensUses = parseUsesFromBag(allInstances)
memcache.set('lensUsesFor' + lensID,thisLensUses)
return thisLensUses
def getLensStats(lensID, update = False):
cacheKey = 'currentLensStats' + lensID
currentStats = memcache.get(cacheKey)
if currentStats is None or update == True:
allInstances = userLensBag.all().filter('lensID =', lensID)
currentStats = makeStatCalculation(allInstances)
memcache.set(cacheKey, currentStats)
return currentStats
def updateUserBag(userID, fetch = False):
userBag = userLensBag.all().filter('userID = ', userID)
cachedBag = []
for lens in userBag:
cachedBag.append(lens)
cacheKey = userBagCacheKey(userID)
memcache.set(cacheKey, cachedBag)
if fetch:
return cachedBag
def getTotalLensInstances(refresh = False):
totalInstances = memcache.get('totalLensInstances')
if totalInstances is None or refresh:
totalInstances = 0
allBagObjects = userLensBag.all()
listAllBags = []
for bagObject in allBagObjects:
listAllBags.append(bagObject.userID)
for userID in getAllUsers():
if userID in listAllBags:
totalInstances += 1
memcache.set('totalLensInstances', totalInstances)
return totalInstances
