Is there any way to handle task termination gracefully? When i do ctrl-c no form for shutdown hook is called in the task. I have yet to see an example or google search hit for something that shows how this can be solved. Is it a futile project and a dead end? Will mix tasks always be hard killed w…

Btw. It is solved. By not using System.cmd and instead running tasks via Mix.Task.run. When i ran the task via System.cmd the spawned task outlived the task it was spawned from.

I started using Ctrl + \ a while back and I think it is more graceful than Ctrl + c. [image] How do you exit out of erl and iex? Questions / Help How do you exit out of erl and iex? ctrl-G does not work. ctrl-c two times work but any single command inside prompt is better…

Might be, but im more interested in figuring out how to gracefully terminate a mix task from inside the task. But alas there does not seem to be passed events to the task from mix task execution system.

Maybe, but it should be called when the task is being terminated from the outside. With Ctrl-c.

Well, Ctrl-C sends a SIGINT signal to the process. You should be able to do what you want using the signal handling capabilities of the kernel , more specifically erl_signal_server.

I use System.stop() sometimes if I want to try graceful exit. But, I don’t think there is any issue doing Ctrl-c twice. Is there any specific reason for you to ask this?

its about a task in testcontainers for elixir, that spawns a database container, which can be reusable. When forcefully terminated, my thought was to stop the database container causing the spawned tests via System.cmd to fail and complete faster. But as this thread has developed, there is no way t…

however not to brag or anything but mix testcontainers.test --watch lib --watch test is pretty nice to work with with reusable database container. Just saying. Just wish i could cancel it. But now when i think about it, why should i need to cancel it? tests running for a long time and wont stop? han…

Can mix tasks be gracefully shutdown?

Questions / Help

arcanemachine September 30, 2024, 4:40pm 2

I started using Ctrl + \ a while back and I think it is more graceful than Ctrl + c.

2 Likes