I have just started using locust with one custom client. At the end of the test (on_stop) I am fetching some results from APM and logging them.
Issue : when I use below command, all 1000 users are fetching those details and logging the data from APM. But I want only the 1st user to do this job and let other users to ignore this call.
$ locust -f --headless -u 1000 -r 100 --run-time 1h30m
Please let me know if someone has done something similar earlier. Thanks in advance.
I think what you probably want is test_stop EventHook. It runs once when the test is stopped. If you run in distributed mode, it runs once only on the master.
https://docs.locust.io/en/stable/api.html#locust.event.Events.test_stop
My understanding is that you are not running in distributed mode and you are using User class' on_stop method. I would try handling it with some global variable, it is quick and might need some work, like this:
apm_logging_user_assigned = False
class MyUser(User):
test stuff here ...
def on_start(self):
if apm_logging_user_assigned is False:
self.apm_log = True
apm_logging_user_assigned = True
super().on_start()
def on_stop(self):
if self.apm_log:
do your apm stuff here...
super().on_stop()