full update for some subkeys

[akkoma] / lib / pleroma / config / transfer_task.ex

diff --git a/lib/pleroma/config/transfer_task.ex b/lib/pleroma/config/transfer_task.ex
index a8cbfa52a69f2c81cc696ee032dce999ac00b20b..9b571d5d9b06f77b5fbca91f20b12e299c476000 100644 (file)
--- a/lib/pleroma/config/transfer_task.ex
+++ b/lib/pleroma/config/transfer_task.ex
@@ -1,42 +1,95 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Config.TransferTask do
   use Task
-  alias Pleroma.Web.AdminAPI.Config
 
-  def start_link do
+  alias Pleroma.ConfigDB
+  alias Pleroma.Repo
+
+  require Logger
+
+  def start_link(_) do
     load_and_update_env()
-    if Pleroma.Config.get(:env) == :test, do: Ecto.Adapters.SQL.Sandbox.checkin(Pleroma.Repo)
+    if Pleroma.Config.get(:env) == :test, do: Ecto.Adapters.SQL.Sandbox.checkin(Repo)
     :ignore
   end
 
   def load_and_update_env do
-    if Pleroma.Config.get([:instance, :dynamic_configuration]) and
-         Ecto.Adapters.SQL.table_exists?(Pleroma.Repo, "config") do
-      Pleroma.Repo.all(Config)
-      |> Enum.each(&update_env(&1))
+    with true <- Pleroma.Config.get(:configurable_from_database),
+         true <- Ecto.Adapters.SQL.table_exists?(Repo, "config"),
+         started_applications <- Application.started_applications() do
+      # We need to restart applications for loaded settings take effect
+      ConfigDB
+      |> Repo.all()
+      |> Enum.map(&update_env(&1))
+      |> Enum.uniq()
+      # TODO: some problem with prometheus after restart!
+      |> Enum.reject(&(&1 in [:pleroma, nil, :prometheus]))
+      |> Enum.each(&restart(started_applications, &1))
     end
   end
 
   defp update_env(setting) do
     try do
-      key =
-        if String.starts_with?(setting.key, "Pleroma.") do
-          "Elixir." <> setting.key
+      key = ConfigDB.from_string(setting.key)
+      group = ConfigDB.from_string(setting.group)
+      value = ConfigDB.from_binary(setting.value)
+
+      if group != :phoenix and key != :serve_endpoints do
+        default = Pleroma.Config.Holder.config(group, key)
+
+        merged_value =
+          if can_be_merged?(default, value) do
+            ConfigDB.deep_merge(group, key, default, value)
+          else
+            value
+          end
+
+        :ok = Application.put_env(group, key, merged_value)
+
+        if group != :logger do
+          group
         else
-          setting.key
-        end
+          # change logger configuration in runtime, without restart
+          if Keyword.keyword?(merged_value) and
+               key not in [:compile_time_application, :backends, :compile_time_purge_matching] do
+            Logger.configure_backend(key, merged_value)
+          else
+            Logger.configure([{key, merged_value}])
+          end
 
-      Application.put_env(
-        :pleroma,
-        String.to_existing_atom(key),
-        Config.from_binary(setting.value)
-      )
+          nil
+        end
+      end
     rescue
       e ->
-        require Logger
-
         Logger.warn(
-          "updating env causes error, key: #{inspect(setting.key)}, error: #{inspect(e)}"
+          "updating env causes error, group: #{inspect(setting.group)}, key: #{
+            inspect(setting.key)
+          }, value: #{inspect(ConfigDB.from_binary(setting.value))}, error: #{inspect(e)}"
         )
+
+        nil
+    end
+  end
+
+  defp restart(started_applications, app) do
+    with {^app, _, _} <- List.keyfind(started_applications, app, 0),
+         :ok <- Application.stop(app) do
+      :ok = Application.start(app)
+    else
+      nil -> Logger.warn("#{app} is not started.")
+      error -> Logger.warn(inspect(error))
     end
   end
+
+  defp can_be_merged?(val1, val2) when is_map(val1) and is_map(val2), do: true
+
+  defp can_be_merged?(val1, val2) when is_list(val1) and is_list(val2) do
+    Keyword.keyword?(val1) and Keyword.keyword?(val2)
+  end
+
+  defp can_be_merged?(_val1, _val2), do: false
 end