58 lines
1.2 KiB
Elixir
58 lines
1.2 KiB
Elixir
defmodule Mix.Tasks.CompactDatabase do
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@moduledoc """
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Compact the database by flattening the object graph.
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"""
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require Logger
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use Mix.Task
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import Ecto.Query
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alias Pleroma.Activity
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alias Pleroma.Repo
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defp maybe_compact(%Activity{data: %{"object" => %{"id" => object_id}}} = activity) do
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data =
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activity.data
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|> Map.put("object", object_id)
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{:ok, activity} =
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Activity.change(activity, %{data: data})
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|> Repo.update()
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{:ok, activity}
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end
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defp maybe_compact(%Activity{} = activity), do: {:ok, activity}
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defp activity_query(min_id, max_id) do
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from(
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a in Activity,
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where: fragment("?->>'type' = 'Create'", a.data),
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where: a.id >= ^min_id,
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where: a.id < ^max_id
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)
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end
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def run(_args) do
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Application.ensure_all_started(:pleroma)
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max = Repo.aggregate(Activity, :max, :id)
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Logger.info("Considering #{max} activities")
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chunks = 0..round(max / 100)
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Enum.each(chunks, fn i ->
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min = i * 100
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max = min + 100
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activity_query(min, max)
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|> Repo.all()
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|> Enum.each(&maybe_compact/1)
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IO.write(".")
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end)
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Logger.info("Finished.")
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end
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end
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