设置Django视图执行的计时器

Question

我正在努力防止Django视图在一小时内被执行多次。换言之，如果函数在15:00运行，则所有用户的所有未来请求都应被忽略，直到17:00才允许再次运行。

尝试使用计时器，但每次调用视图时都会重置。也许有人能给我指明正确的方向？谢谢

import threading as th
def hello():
print("hello, world")

def webhook(request):

tm = th.Timer(3600, hello)

if request.method == 'POST' and not tm.is_alive():

tm.start()

code_to.ecexute()
return HttpResponse("Webhook received!")

Answer 1

最终，这就是我所做的，而且似乎工作得很好。事实上，我需要它每天运行不超过一次，因此有以下条件。

感谢所有的建议！！！

def webhook2 (request):
today = datetime.now().date()
with open('timestamp.txt') as f:
tstamp = f.read()
last_run = datetime.strptime(tstamp, '%Y-%m-%d')
last_run_date = datetime.date(last_run)
print ("last run: " + str(last_run_date))

if last_run_date < today:

file = open("timestamp.txt" ,"w")
file.write(str(today))
file.close()
if request.method == 'POST':
msg = str(request.body)
final_msg=msg[2:-1]
print("Data received from Webhook is: ", request.body)
# creates a google calendar event
function_logic()
return HttpResponse("Webhook received! Event added to calendar")


else:
print ("we already have a record for today")
return HttpResponse("Not adding a record. We already have one for today.")

Answer 2

您的计时器每次都会被重置，因为它在每次发出请求时都会执行的函数中。您应该尝试全局设置计时器，例如在您的功能之外。(注意脚本何时重新运行，计时器将再次重置(。

import threading as th
def hello():
print("hello, world")
tm = None
def webhook(request):

# check here if timer is dead then process the request.
if timer_is_dead || tm is None:

# accessing global value and setting it for first time
if tm is None:
global tm
tm =  th.Timer(3600, hello)
tm.start()

if request.method == 'POST' and not tm.is_alive():

code_to.ecexute()
# start timer again for next hour

return HttpResponse("Webhook received!")
else:
return HttResponse("Not Allowed")

编辑：处理第一个请求，然后启动计时器