How to wait for frappe.enqueue?

#1

Hi,
1) I use frappe.enqueue() to run a method. And after this enqueue finish I want to run another method (not enqueued). But since the enqueue takes some times, the second method runs before the enqueued method finish.

enqueue('first_method')
second_method()

How to wait for the first enqueue to finish and then run the second method?

2) On other case, if I have a set of enqueues that runs together (e.g because 2 users click the same button at almost the same time):

def button_click():
    enqueue(third_method)    #while this method runs for user1, user2 clicks the button so it's also enqueued for user2
    enqueue(fourth_method)

So to illustrate the background jobs will be like this:

third_method(user1)
third_method(user2)
fourth_method(user1)
fourth_method(user2)

how do I make the fourth_method(user1) to run right after the third_method(user1) finish, without waiting for the third_method(user2) to finish?

I hope my description and questions are clear. Thank you

#2

frappe.enqueue() is for asynchronous execution.

In the first case if you have to wait for the first method to finish executing, then why not simply do

first_method()
second_method()

Also you can do

enqueue('first_method', now=True)
second_method()

Both have the same effect.

In the second case. why not do?

def button_click():
    third_method()
    fourth_method()

Or if you want button_click() to return early

def button_click():
    enqueue("async_button_click")

def async_button_click():
    third_method()
    fourth_method()

If you don’t want asynchronous execution, don’t use the method that is built for asynchronous execution

1 Like
#4

I’ve lost you. Can’t you show real snippets, instead of making up toy examples?

#5

Sorry, I made wrong comment :pray:
But I understand your suggestion and will try the same.