Pleroma/lib/pleroma/config/transfer_task.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 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.Config
alias Pleroma.ConfigDB
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alias Pleroma.Repo
require Logger
@type env() :: :test | :benchmark | :dev | :prod
@reboot_time_keys [
{:pleroma, :hackney_pools},
{:pleroma, :chat},
{:pleroma, Oban},
{:pleroma, :rate_limit},
{:pleroma, :markup},
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{:pleroma, :streamer},
{:pleroma, :pools},
{:pleroma, :connections_pool}
]
@reboot_time_subkeys [
{:pleroma, Pleroma.Captcha, [:seconds_valid]},
{:pleroma, Pleroma.Upload, [:proxy_remote]},
{:pleroma, :instance, [:upload_limit]},
{:pleroma, :email_notifications, [:digest]},
{:pleroma, :oauth2, [:clean_expired_tokens]},
{:pleroma, Pleroma.ActivityExpiration, [:enabled]},
{:pleroma, Pleroma.ScheduledActivity, [:enabled]},
{:pleroma, :gopher, [:enabled]}
]
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def start_link(_) do
load_and_update_env()
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if Config.get(:env) == :test, do: Ecto.Adapters.SQL.Sandbox.checkin(Repo)
:ignore
end
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@spec load_and_update_env([ConfigDB.t()], boolean()) :: :ok
def load_and_update_env(deleted_settings \\ [], restart_pleroma? \\ true) do
with {_, true} <- {:configurable, Config.get(:configurable_from_database)} do
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# We need to restart applications for loaded settings take effect
# TODO: some problem with prometheus after restart!
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reject_restart =
if restart_pleroma? do
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[nil, :prometheus]
else
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[:pleroma, nil, :prometheus]
end
started_applications = Application.started_applications()
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(Repo.all(ConfigDB) ++ deleted_settings)
|> Enum.map(&merge_and_update/1)
|> Enum.uniq()
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|> Enum.reject(&(&1 in reject_restart))
|> maybe_set_pleroma_last()
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|> Enum.each(&restart(started_applications, &1, Config.get(:env)))
:ok
else
{:configurable, false} -> Restarter.Pleroma.rebooted()
end
end
defp maybe_set_pleroma_last(apps) do
# to be ensured that pleroma will be restarted last
if :pleroma in apps do
apps
|> List.delete(:pleroma)
|> List.insert_at(-1, :pleroma)
else
Restarter.Pleroma.rebooted()
apps
end
end
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defp group_for_restart(:logger, key, _, merged_value) do
# 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
nil
end
defp group_for_restart(group, _, _, _) when group != :pleroma, do: group
defp group_for_restart(group, key, value, _) do
if pleroma_need_restart?(group, key, value), do: group
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end
defp merge_and_update(setting) do
try do
key = ConfigDB.from_string(setting.key)
group = ConfigDB.from_string(setting.group)
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default = Config.Holder.config(group, key)
value = ConfigDB.from_binary(setting.value)
merged_value =
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cond do
Ecto.get_meta(setting, :state) == :deleted -> default
can_be_merged?(default, value) -> ConfigDB.merge_group(group, key, default, value)
true -> value
end
:ok = update_env(group, key, merged_value)
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group_for_restart(group, key, value, merged_value)
rescue
error ->
error_msg =
"updating env causes error, group: " <>
inspect(setting.group) <>
" key: " <>
inspect(setting.key) <>
" value: " <>
inspect(ConfigDB.from_binary(setting.value)) <> " error: " <> inspect(error)
Logger.warn(error_msg)
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nil
end
end
@spec pleroma_need_restart?(atom(), atom(), any()) :: boolean()
def pleroma_need_restart?(group, key, value) do
group_and_key_need_reboot?(group, key) or group_and_subkey_need_reboot?(group, key, value)
end
defp group_and_key_need_reboot?(group, key) do
Enum.any?(@reboot_time_keys, fn {g, k} -> g == group and k == key end)
end
defp group_and_subkey_need_reboot?(group, key, value) do
Keyword.keyword?(value) and
Enum.any?(@reboot_time_subkeys, fn {g, k, subkeys} ->
g == group and k == key and
Enum.any?(Keyword.keys(value), &(&1 in subkeys))
end)
end
defp update_env(group, key, nil), do: Application.delete_env(group, key)
defp update_env(group, key, value), do: Application.put_env(group, key, value)
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defp restart(_, :pleroma, env), do: Restarter.Pleroma.restart_after_boot(env)
defp restart(started_applications, app, _) do
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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