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# -*- coding: utf-8 -*-
#
import threading
import time
from django.core.cache import cache
from django.dispatch import Signal, receiver
from django.db.utils import ProgrammingError, OperationalError
from common.utils import get_logger
from .const import ASSETS_CACHE_KEY, USERS_CACHE_KEY, SYSTEM_USER_CACHE_KEY
RUNNING = False
logger = get_logger(__file__)
on_app_ready = Signal()
@receiver(on_app_ready)
def on_app_ready_set_cache(sender, **kwargs):
from .utils import get_session_asset_list, get_session_user_list, \
get_session_system_user_list
global RUNNING
def set_cache():
while True:
try:
assets = get_session_asset_list()
users = get_session_user_list()
system_users = get_session_system_user_list()
cache.set(ASSETS_CACHE_KEY, assets)
cache.set(USERS_CACHE_KEY, users)
cache.set(SYSTEM_USER_CACHE_KEY, system_users)
except (ProgrammingError, OperationalError):
pass
finally:
time.sleep(10)
if RUNNING:
return
threads = []
thread = threading.Thread(target=set_cache)
threads.append(thread)
logger.debug("Receive app ready signal: set cache task start")
for t in threads:
t.daemon = True
t.start()
RUNNING = True