Best way to notify parent process from child

Question

I have a Python twisted application whose work is to execute os processes, monitor their life cycle and collect their logs and exit status. Now I wanted to add a feature which allows child process to notify about it's progress(e.g 50% complete) to parent. How can I enable this communication in best way? I thought of a rest endpoint in parent where child posts. Is there any other better way to enable this communication between parent process and child(can be any is process)?

PS: application is written in twisted.

Answer 1

Consider os.pipe or multiprocessing.pipe and queues to communicate between child and parent processes. You can also use semaphores.

You could also use RabitMQ to do IPC or just read a file that's being written to.