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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Mix.Tasks.Pleroma.RefreshCounterCache do
   6   @shortdoc "Refreshes counter cache"
   7
   8   use Mix.Task
   9
  10   alias Pleroma.Activity
  11   alias Pleroma.CounterCache
  12   alias Pleroma.Repo
  13
  14   require Logger
  15   import Ecto.Query
  16
  17   def run([]) do
  18     Mix.Pleroma.start_pleroma()
  19
  20     instances =
  21       Activity
  22       |> distinct([a], true)
  23       |> select([a], fragment("split_part(?, '/', 3)", a.actor))
  24       |> Repo.all()
  25
  26     instances
  27     |> Enum.with_index(1)
  28     |> Enum.each(fn {instance, i} ->
  29       counters = instance_counters(instance)
  30       CounterCache.set(instance, counters)
  31
  32       Mix.Pleroma.shell_info(
  33         "[#{i}/#{length(instances)}] Setting #{instance} counters: #{inspect(counters)}"
  34       )
  35     end)
  36
  37     Mix.Pleroma.shell_info("Done")
  38   end
  39
  40   defp instance_counters(instance) do
  41     counters = %{"public" => 0, "unlisted" => 0, "private" => 0, "direct" => 0}
  42
  43     Activity
  44     |> where([a], fragment("(? ->> 'type'::text) = 'Create'", a.data))
  45     |> where([a], fragment("split_part(?, '/', 3) = ?", a.actor, ^instance))
  46     |> select(
  47       [a],
  48       {fragment(
  49          "activity_visibility(?, ?, ?)",
  50          a.actor,
  51          a.recipients,
  52          a.data
  53        ), count(a.id)}
  54     )
  55     |> group_by(
  56       [a],
  57       fragment(
  58         "activity_visibility(?, ?, ?)",
  59         a.actor,
  60         a.recipients,
  61         a.data
  62       )
  63     )
  64     |> Repo.all(timeout: :timer.minutes(30))
  65     |> Enum.reduce(counters, fn {visibility, count}, acc ->
  66       Map.put(acc, visibility, count)
  67     end)
  68   end
  69 end