akkoma/lib/pleroma/config/transfer_task.ex

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# 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
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alias Pleroma.ConfigDB
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alias Pleroma.Repo
require Logger
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def start_link(_) do
load_and_update_env()
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if Pleroma.Config.get(:env) == :test, do: Ecto.Adapters.SQL.Sandbox.checkin(Repo)
:ignore
end
def load_and_update_env do
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with true <- Pleroma.Config.get(:configurable_from_database),
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true <- Ecto.Adapters.SQL.table_exists?(Repo, "config"),
started_applications <- Application.started_applications() do
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# We need to restart applications for loaded settings take effect
ConfigDB
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|> 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 = ConfigDB.from_string(setting.key)
group = ConfigDB.from_string(setting.group)
value = ConfigDB.from_binary(setting.value)
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default = Pleroma.Config.Holder.config(group, key)
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merged_value =
if can_be_merged?(default, value) do
ConfigDB.merge_group(group, key, default, value)
else
value
end
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:ok = Application.put_env(group, key, merged_value)
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if group != :logger do
group
else
# 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)
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else
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Logger.configure([{key, merged_value}])
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end
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nil
end
rescue
e ->
Logger.warn(
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"updating env causes error, group: #{inspect(setting.group)}, key: #{
inspect(setting.key)
}, value: #{inspect(ConfigDB.from_binary(setting.value))}, error: #{inspect(e)}"
)
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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
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nil ->
Logger.warn("#{app} is not started.")
error ->
error
|> inspect()
|> Logger.warn()
end
end
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