150 lines
4.3 KiB
Elixir
150 lines
4.3 KiB
Elixir
defmodule Mobilizon do
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@moduledoc """
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Mobilizon is a decentralized and federated Meetup-like using
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[ActivityPub](http://activitypub.rocks/).
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It consists of an API server build with [Elixir](http://elixir-lang.github.io/)
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and the [Phoenix Framework](https://hexdocs.pm/phoenix).
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Mobilizon relies on `Guardian` for auth and `Geo`/Postgis for geographical
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information.
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"""
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use Application
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import Cachex.Spec
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alias Mobilizon.{Config, Storage, Web}
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alias Mobilizon.Federation.ActivityPub
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alias Mobilizon.Service.{ErrorPage, ErrorReporting}
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alias Mobilizon.Service.Export.{Feed, ICalendar}
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@name Mix.Project.config()[:name]
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@version Mix.Project.config()[:version]
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@env Application.fetch_env!(:mobilizon, :env)
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@spec named_version :: String.t()
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def named_version, do: "#{@name} #{@version}"
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@spec user_agent :: String.t()
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def user_agent do
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info = "#{Web.Endpoint.url()} <#{Config.get([:instance, :email], "")}>"
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"#{named_version()}; #{info}"
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end
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@spec start(:normal | {:takeover, node} | {:failover, node}, term) ::
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{:ok, pid} | {:ok, pid, term} | {:error, term}
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def start(_type, _args) do
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children =
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[
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# supervisors
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Storage.Repo,
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{Phoenix.PubSub, name: Mobilizon.PubSub},
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Web.Endpoint,
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{Absinthe.Subscription, Web.Endpoint},
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{Oban, Application.get_env(:mobilizon, Oban)},
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# workers
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Guardian.DB.Token.SweeperServer,
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ActivityPub.Federator,
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Mobilizon.PythonWorker,
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TzWorld.Backend.DetsWithIndexCache,
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cachex_spec(:feed, 2500, 60, 60, &Feed.create_cache/1),
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cachex_spec(:ics, 2500, 60, 60, &ICalendar.create_cache/1),
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cachex_spec(
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:actor_key_rotation,
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2500,
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div(Application.get_env(:mobilizon, :activitypub)[:actor_key_rotation_delay], 60),
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60 * 30
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),
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cachex_spec(:statistics, 10, 60, 60),
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cachex_spec(:config, 10, 60, 60),
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cachex_spec(:rich_media_cache, 10, 60, 60),
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cachex_spec(:activity_pub, 2500, 3, 15),
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cachex_spec(:default_actors, 2500, 3, 15),
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%{
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id: :cache_key_value,
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start: {Cachex, :start_link, [:key_value]}
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}
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] ++
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task_children(@env)
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ErrorReporting.configure()
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# Only attach the telemetry logger when we aren't in an IEx shell
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unless Code.ensure_loaded?(IEx) && IEx.started?() do
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Oban.Telemetry.attach_default_logger(:info)
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ErrorReporting.attach()
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end
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Supervisor.start_link(children, strategy: :one_for_one, name: Mobilizon.Supervisor)
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end
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@spec config_change(keyword, keyword, [atom]) :: :ok
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def config_change(changed, _new, removed) do
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Web.Endpoint.config_change(changed, removed)
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:ok
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end
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# sobelow_skip ["DOS.StringToAtom"]
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@spec cachex_spec(atom, integer, integer, integer, function | nil) :: Supervisor.child_spec()
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defp cachex_spec(name, limit, default, interval, fallback \\ nil) do
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%{
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id: String.to_atom("cache_#{to_string(name)}"),
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start:
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{Cachex, :start_link,
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[
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name,
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Keyword.merge(
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cachex_options(limit, default, interval),
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fallback_options(fallback)
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)
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]}
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}
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end
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@spec cachex_options(integer, integer, integer) :: keyword
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defp cachex_options(limit, default, interval) do
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[
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limit: limit,
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expiration:
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expiration(
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default: :timer.minutes(default),
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interval: :timer.seconds(interval)
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)
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]
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end
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@spec fallback_options(function | nil) :: keyword
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defp fallback_options(nil), do: []
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defp fallback_options(fallback), do: [fallback: fallback(default: fallback)]
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defp task_children(:test), do: []
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defp task_children(_), do: [relay_actor(), anonymous_actor(), render_error_page()]
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defp relay_actor do
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%{
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id: :relay_actor_init,
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start: {Task, :start_link, [&ActivityPub.Relay.init/0]},
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restart: :temporary
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}
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end
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defp anonymous_actor do
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%{
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id: :anonymous_actor_init,
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start: {Task, :start_link, [&Mobilizon.Config.anonymous_actor_id/0]},
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restart: :temporary
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}
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end
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defp render_error_page do
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%{
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id: :render_error_page_init,
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start: {Task, :start_link, [&ErrorPage.init/0]},
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restart: :temporary
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}
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end
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end
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