proxMon/agent/lib/proxmox_agent/shell.ex

24 lines
725 B
Elixir

defmodule ProxmoxAgent.Shell do
@moduledoc """
Thin wrapper over System.cmd for testability. Collectors accept an optional
:runner function of this shape so tests can inject fixture-backed fakes.
"""
@type result :: {:ok, String.t()} | {:error, term()}
@spec run(String.t(), [String.t()]) :: result
def run(command, args) do
try do
case System.cmd(command, args, stderr_to_stdout: true) do
{output, 0} -> {:ok, output}
{output, code} -> {:error, {:nonzero_exit, code, output}}
end
rescue
e in ErlangError ->
case e.original do
:enoent -> {:error, {:enoent, command}}
other -> {:error, {:system_error, other}}
end
end
end
end