lib/edeliver/relup/instructions/suspend_app_processes.ex
defmodule Edeliver.Relup.Instructions.SuspendAppProcesses do
@moduledoc """
This upgrade instruction does nothing
but can be used in an `Edeliver.Relup.Modification` to indicate
that the processes are suspended which use changed callback modules
See also `Edeliver.Relup.Instructions.ResumeAppProcesses`.
In a future step it might remove `suspend` instructions from
modules which does not change exported functions and / or
group the suspending of the processes in that way, that
first all processes are suspended, then all code-changed
and in the end resumed instead of performing this steps
per module.
"""
use Edeliver.Relup.Instruction
def modify_relup(instructions = %Instructions{}, _config = %{}) do
instructions
end
end