forked from potsda.mn/mobilizon
65 lines
1.8 KiB
Elixir
65 lines
1.8 KiB
Elixir
defmodule Mobilizon.Service.CleanOldActivity do
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@moduledoc """
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Service to clean old activities
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"""
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alias Mobilizon.Activities.Activity
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Config
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alias Mobilizon.Storage.Repo
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import Ecto.Query
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@doc """
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Clean old activities
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Remove activities that are older than a certain period
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Options:
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* `grace_period` how old in hours can the media be before it's taken into account for deletion
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* `dry_run` just return the media that would have been deleted, don't actually delete it
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"""
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@spec clean(Keyword.t()) :: {:ok, list(Media.t())} | {:error, String.t()}
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def clean(opts \\ []) do
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{query, nb_actors} = find_activities(opts)
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if Keyword.get(opts, :dry_run, false) do
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nb_activities = Repo.aggregate(query, :count)
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{:ok, actors: nb_actors, activities: nb_activities}
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else
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{nb_activities, _} = Repo.delete_all(query)
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{:ok, actors: nb_actors, activities: nb_activities}
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end
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end
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@spec find_activities(Keyword.t()) :: {Ecto.Query.t(), integer()}
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defp find_activities(opts) do
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grace_period =
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Keyword.get(opts, :grace_period, Config.get([:instance, :activity_expire_days], 365))
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expiration_date = DateTime.add(DateTime.utc_now(), grace_period * -3600)
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activities_to_keep =
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Keyword.get(
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opts,
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:activity_keep_number,
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Config.get([:instance, :activity_keep_number], 100)
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)
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actor_ids =
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Actor
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|> where(type: :Group)
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|> join(:inner, [ac], a in Activity, on: a.group_id == ac.id)
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|> group_by([ac], ac.id)
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|> having([_ac, a], count(a.id) > ^activities_to_keep)
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|> select([ac], ac.id)
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|> Repo.all()
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query =
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Activity
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|> where([a], a.inserted_at < ^expiration_date)
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|> where([a], a.group_id in ^actor_ids)
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{query, length(actor_ids)}
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end
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end
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