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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.MediaProxy.Invalidation.Script do
   6   @moduledoc false
   7
   8   @behaviour Pleroma.Web.MediaProxy.Invalidation
   9
  10   require Logger
  11
  12   @impl Pleroma.Web.MediaProxy.Invalidation
  13   def purge(urls, %{script_path: script_path} = _options) do
  14     args =
  15       urls
  16       |> List.wrap()
  17       |> Enum.uniq()
  18       |> Enum.join(" ")
  19
  20     path = Path.expand(script_path)
  21
  22     Logger.debug("Running cache purge: #{inspect(urls)}, #{path}")
  23
  24     case do_purge(path, [args]) do
  25       {result, exit_status} when exit_status > 0 ->
  26         Logger.error("Error while cache purge: #{inspect(result)}")
  27         {:error, inspect(result)}
  28
  29       _ ->
  30         {:ok, "success"}
  31     end
  32   end
  33
  34   def purge(_, _), do: {:error, "not found script path"}
  35
  36   defp do_purge(path, args) do
  37     System.cmd(path, args)
  38   rescue
  39     error -> {inspect(error), 1}
  40   end
  41 end