58 lines
1.8 KiB
Elixir
58 lines
1.8 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Workers.Cron.HashtagsCleanupWorker do
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@moduledoc """
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The worker to clean up unused hashtags_objects and hashtags.
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"""
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use Oban.Worker, queue: "hashtags_cleanup"
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alias Pleroma.Repo
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require Logger
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@hashtags_objects_query """
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DELETE FROM hashtags_objects WHERE object_id IN
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(SELECT DISTINCT objects.id FROM objects
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JOIN hashtags_objects ON hashtags_objects.object_id = objects.id LEFT JOIN activities
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ON COALESCE(activities.data->'object'->>'id', activities.data->>'object') =
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(objects.data->>'id')
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AND activities.data->>'type' = 'Create'
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WHERE activities.id IS NULL);
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"""
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@hashtags_query """
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DELETE FROM hashtags WHERE id IN
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(SELECT hashtags.id FROM hashtags
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LEFT OUTER JOIN hashtags_objects
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ON hashtags_objects.hashtag_id = hashtags.id
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WHERE hashtags_objects.hashtag_id IS NULL AND hashtags.inserted_at < $1);
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"""
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@impl Oban.Worker
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def perform(_job) do
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Logger.info("Cleaning up unused `hashtags_objects` records...")
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{:ok, %{num_rows: hashtags_objects_count}} =
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Repo.query(@hashtags_objects_query, [], timeout: :infinity)
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Logger.info("Deleted #{hashtags_objects_count} unused `hashtags_objects` records.")
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Logger.info("Cleaning up unused `hashtags` records...")
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# Note: ignoring recently created hashtags since references are added after hashtag is created
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{:ok, %{num_rows: hashtags_count}} =
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Repo.query(@hashtags_query, [NaiveDateTime.add(NaiveDateTime.utc_now(), -3600 * 24)],
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timeout: :infinity
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)
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Logger.info("Deleted #{hashtags_count} unused `hashtags` records.")
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Logger.info("HashtagsCleanupWorker complete.")
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:ok
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end
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end
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