Delete attachments asynchronously
This commit is contained in:
Roman Chvanikov
parent
81133702d4
commit
d6a532bf0f
3 changed files with 99 additions and 73 deletions
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@ -19,6 +19,8 @@ defmodule Pleroma.Object do
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@type t() :: %__MODULE__{}
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@derive {Jason.Encoder, only: [:data]}
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schema "objects" do
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field(:data, :map)
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@ -183,83 +185,14 @@ def delete(%Object{data: %{"id" => id}} = object) do
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deleted_activity = Activity.delete_all_by_object_ap_id(id),
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{:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),
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{:ok, _} <- Cachex.del(:web_resp_cache, URI.parse(id).path),
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:ok <- delete_attachments(object) do
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{:ok, _} <-
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Pleroma.Workers.AttachmentsCleanupWorker.enqueue("cleanup_attachments", %{
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"object" => object
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}) do
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{:ok, object, deleted_activity}
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end
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end
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defp delete_attachments(%{data: %{"attachment" => [_ | _] = attachments, "actor" => actor}}) do
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hrefs =
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Enum.flat_map(attachments, fn attachment ->
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Enum.map(attachment["url"], & &1["href"])
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end)
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names = Enum.map(attachments, & &1["name"])
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uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
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# find all objects for copies of the attachments, name and actor doesn't matter here
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delete_ids =
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from(o in Object,
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where:
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fragment(
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"to_jsonb(array(select jsonb_array_elements((?)#>'{url}') ->> 'href' where jsonb_typeof((?)#>'{url}') = 'array'))::jsonb \\?| (?)",
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o.data,
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o.data,
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^hrefs
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)
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)
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|> Repo.all()
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# we should delete 1 object for any given attachment, but don't delete files if
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# there are more than 1 object for it
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|> Enum.reduce(%{}, fn %{
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id: id,
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data: %{
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"url" => [%{"href" => href}],
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"actor" => obj_actor,
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"name" => name
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}
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},
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acc ->
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Map.update(acc, href, %{id: id, count: 1}, fn val ->
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case obj_actor == actor and name in names do
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true ->
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# set id of the actor's object that will be deleted
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%{val | id: id, count: val.count + 1}
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false ->
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# another actor's object, just increase count to not delete file
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%{val | count: val.count + 1}
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end
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end)
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end)
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|> Enum.map(fn {href, %{id: id, count: count}} ->
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# only delete files that have single instance
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with 1 <- count do
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prefix =
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case Pleroma.Config.get([Pleroma.Upload, :base_url]) do
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nil -> "media"
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_ -> ""
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end
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base_url = Pleroma.Config.get([__MODULE__, :base_url], Pleroma.Web.base_url())
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file_path = String.trim_leading(href, "#{base_url}/#{prefix}")
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uploader.delete_file(file_path)
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end
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id
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end)
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from(o in Object, where: o.id in ^delete_ids)
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|> Repo.delete_all()
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:ok
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end
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defp delete_attachments(%{data: _data}), do: :ok
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def prune(%Object{data: %{"id" => id}} = object) do
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with {:ok, object} <- Repo.delete(object),
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{:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),
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87
lib/pleroma/workers/attachments_cleanup_worker.ex
Normal file
87
lib/pleroma/workers/attachments_cleanup_worker.ex
Normal file
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@ -0,0 +1,87 @@
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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Workers.AttachmentsCleanupWorker do
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import Ecto.Query
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alias Pleroma.Object
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alias Pleroma.Repo
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use Pleroma.Workers.WorkerHelper, queue: "attachments_cleanup"
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@impl Oban.Worker
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def perform(
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%{"object" => %{"data" => %{"attachment" => [_ | _] = attachments, "actor" => actor}}},
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_job
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) do
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hrefs =
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Enum.flat_map(attachments, fn attachment ->
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Enum.map(attachment["url"], & &1["href"])
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end)
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names = Enum.map(attachments, & &1["name"])
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uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
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# find all objects for copies of the attachments, name and actor doesn't matter here
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delete_ids =
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from(o in Object,
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where:
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fragment(
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"to_jsonb(array(select jsonb_array_elements((?)#>'{url}') ->> 'href' where jsonb_typeof((?)#>'{url}') = 'array'))::jsonb \\?| (?)",
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o.data,
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o.data,
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^hrefs
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)
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)
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# The query above can be time consumptive on large instances until we refactor how uploads are stored
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|> Repo.all(timout: :infinity)
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# we should delete 1 object for any given attachment, but don't delete files if
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# there are more than 1 object for it
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|> Enum.reduce(%{}, fn %{
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id: id,
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data: %{
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"url" => [%{"href" => href}],
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"actor" => obj_actor,
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"name" => name
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}
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},
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acc ->
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Map.update(acc, href, %{id: id, count: 1}, fn val ->
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case obj_actor == actor and name in names do
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true ->
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# set id of the actor's object that will be deleted
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%{val | id: id, count: val.count + 1}
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false ->
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# another actor's object, just increase count to not delete file
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%{val | count: val.count + 1}
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end
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end)
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end)
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|> Enum.map(fn {href, %{id: id, count: count}} ->
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# only delete files that have single instance
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with 1 <- count do
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prefix =
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case Pleroma.Config.get([Pleroma.Upload, :base_url]) do
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nil -> "media"
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_ -> ""
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end
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base_url = Pleroma.Config.get([__MODULE__, :base_url], Pleroma.Web.base_url())
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file_path = String.trim_leading(href, "#{base_url}/#{prefix}")
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uploader.delete_file(file_path)
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end
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id
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end)
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from(o in Object, where: o.id in ^delete_ids)
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|> Repo.delete_all()
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end
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def perform(%{"object" => _object}, _job), do: :ok
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end
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@ -4,12 +4,14 @@
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defmodule Pleroma.ObjectTest do
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use Pleroma.DataCase
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use Oban.Testing, repo: Pleroma.Repo
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import ExUnit.CaptureLog
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import Pleroma.Factory
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import Tesla.Mock
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alias Pleroma.Activity
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alias Pleroma.Object
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alias Pleroma.Repo
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alias Pleroma.Tests.ObanHelpers
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alias Pleroma.Web.CommonAPI
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setup do
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@ -99,6 +101,8 @@ test "in subdirectories" do
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Object.delete(note)
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ObanHelpers.perform(all_enqueued(worker: Pleroma.Workers.AttachmentsCleanupWorker))
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assert Object.get_by_id(attachment.id) == nil
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assert {:ok, []} == File.ls("#{uploads_dir}/#{path}")
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@ -133,6 +137,8 @@ test "with dedupe enabled" do
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Object.delete(note)
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ObanHelpers.perform(all_enqueued(worker: Pleroma.Workers.AttachmentsCleanupWorker))
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assert Object.get_by_id(attachment.id) == nil
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assert {:ok, files} = File.ls(uploads_dir)
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refute filename in files
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