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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Application do
   6   import Cachex.Spec
   7   use Application
   8
   9   @name Mix.Project.config()[:name]
  10   @version Mix.Project.config()[:version]
  11   @repository Mix.Project.config()[:source_url]
  12   @env Mix.env()
  13
  14   def name, do: @name
  15   def version, do: @version
  16   def named_version, do: @name <> " " <> @version
  17   def repository, do: @repository
  18
  19   def user_agent do
  20     info = "#{Pleroma.Web.base_url()} <#{Pleroma.Config.get([:instance, :email], "")}>"
  21     named_version() <> "; " <> info
  22   end
  23
  24   # See http://elixir-lang.org/docs/stable/elixir/Application.html
  25   # for more information on OTP Applications
  26   def start(_type, _args) do
  27     Pleroma.Config.DeprecationWarnings.warn()
  28     setup_instrumenters()
  29
  30     # Define workers and child supervisors to be supervised
  31     children =
  32       [
  33         Pleroma.Repo,
  34         Pleroma.Scheduler,
  35         Pleroma.Config.TransferTask,
  36         Pleroma.Emoji,
  37         Pleroma.Captcha,
  38         Pleroma.Daemons.ScheduledActivityDaemon,
  39         Pleroma.Daemons.ActivityExpirationDaemon,
  40         Pleroma.Plugs.RateLimiter.Supervisor
  41       ] ++
  42         cachex_children() ++
  43         hackney_pool_children() ++
  44         [
  45           Pleroma.Stats,
  46           Pleroma.JobQueueMonitor,
  47           {Oban, Pleroma.Config.get(Oban)}
  48         ] ++
  49         task_children(@env) ++
  50         streamer_child(@env) ++
  51         chat_child(@env, chat_enabled?()) ++
  52         [
  53           Pleroma.Web.Endpoint,
  54           Pleroma.Gopher.Server
  55         ]
  56
  57     # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
  58     # for other strategies and supported options
  59     opts = [strategy: :one_for_one, name: Pleroma.Supervisor]
  60     Supervisor.start_link(children, opts)
  61   end
  62
  63   defp setup_instrumenters do
  64     require Prometheus.Registry
  65
  66     if Application.get_env(:prometheus, Pleroma.Repo.Instrumenter) do
  67       :ok =
  68         :telemetry.attach(
  69           "prometheus-ecto",
  70           [:pleroma, :repo, :query],
  71           &Pleroma.Repo.Instrumenter.handle_event/4,
  72           %{}
  73         )
  74
  75       Pleroma.Repo.Instrumenter.setup()
  76     end
  77
  78     Pleroma.Web.Endpoint.MetricsExporter.setup()
  79     Pleroma.Web.Endpoint.PipelineInstrumenter.setup()
  80     Pleroma.Web.Endpoint.Instrumenter.setup()
  81   end
  82
  83   def enabled_hackney_pools do
  84     [:media] ++
  85       if Application.get_env(:tesla, :adapter) == Tesla.Adapter.Hackney do
  86         [:federation]
  87       else
  88         []
  89       end ++
  90       if Pleroma.Config.get([Pleroma.Upload, :proxy_remote]) do
  91         [:upload]
  92       else
  93         []
  94       end
  95   end
  96
  97   defp cachex_children do
  98     [
  99       build_cachex("used_captcha", ttl_interval: seconds_valid_interval()),
 100       build_cachex("user", default_ttl: 25_000, ttl_interval: 1000, limit: 2500),
 101       build_cachex("object", default_ttl: 25_000, ttl_interval: 1000, limit: 2500),
 102       build_cachex("rich_media", default_ttl: :timer.minutes(120), limit: 5000),
 103       build_cachex("scrubber", limit: 2500),
 104       build_cachex("idempotency", expiration: idempotency_expiration(), limit: 2500),
 105       build_cachex("web_resp", limit: 2500),
 106       build_cachex("emoji_packs", expiration: emoji_packs_expiration(), limit: 10),
 107       build_cachex("failed_proxy_url", limit: 2500)
 108     ]
 109   end
 110
 111   defp emoji_packs_expiration,
 112     do: expiration(default: :timer.seconds(5 * 60), interval: :timer.seconds(60))
 113
 114   defp idempotency_expiration,
 115     do: expiration(default: :timer.seconds(6 * 60 * 60), interval: :timer.seconds(60))
 116
 117   defp seconds_valid_interval,
 118     do: :timer.seconds(Pleroma.Config.get!([Pleroma.Captcha, :seconds_valid]))
 119
 120   defp build_cachex(type, opts),
 121     do: %{
 122       id: String.to_atom("cachex_" <> type),
 123       start: {Cachex, :start_link, [String.to_atom(type <> "_cache"), opts]},
 124       type: :worker
 125     }
 126
 127   defp chat_enabled?, do: Pleroma.Config.get([:chat, :enabled])
 128
 129   defp streamer_child(:test), do: []
 130
 131   defp streamer_child(_) do
 132     [Pleroma.Web.Streamer.supervisor()]
 133   end
 134
 135   defp chat_child(:test, _), do: []
 136
 137   defp chat_child(_env, true) do
 138     [Pleroma.Web.ChatChannel.ChatChannelState]
 139   end
 140
 141   defp chat_child(_, _), do: []
 142
 143   defp hackney_pool_children do
 144     for pool <- enabled_hackney_pools() do
 145       options = Pleroma.Config.get([:hackney_pools, pool])
 146       :hackney_pool.child_spec(pool, options)
 147     end
 148   end
 149
 150   defp task_children(:test) do
 151     [
 152       %{
 153         id: :web_push_init,
 154         start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
 155         restart: :temporary
 156       }
 157     ]
 158   end
 159
 160   defp task_children(_) do
 161     [
 162       %{
 163         id: :web_push_init,
 164         start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
 165         restart: :temporary
 166       },
 167       %{
 168         id: :internal_fetch_init,
 169         start: {Task, :start_link, [&Pleroma.Web.ActivityPub.InternalFetchActor.init/0]},
 170         restart: :temporary
 171       }
 172     ]
 173   end
 174 end