Questions & Help>Questions

Can mix tasks be gracefully shutdown?

#mix#mix-tasks
jarlah

jarlah

Can mix tasks be gracefully shutdown?

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 with no way to gracefully shutdown?

9 comments
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Marked As Solved

jarlah

jarlah

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.

1
Post #10

Also Liked

arcanemachine

arcanemachine

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

2
Post #2
benwilson512

benwilson512

Author of Craft GraphQL APIs in Elixir with Absinthe

Maybe calling System.halt(0)

1
Post #4
krasenyp

krasenyp

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.

1
Post #6
itzmidinesh

itzmidinesh

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?

1
Post #7

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