50 lines
1.5 KiB
Elixir
50 lines
1.5 KiB
Elixir
defmodule Pleroma.Repo.Migrations.DataMigrationPopulateUserBlocks do
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use Ecto.Migration
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alias Ecto.Adapters.SQL
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alias Pleroma.Repo
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require Logger
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def up do
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{:ok, %{rows: block_rows}} =
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SQL.query(Repo, "SELECT id, blocks FROM users WHERE blocks != '{}'")
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blockee_ap_ids =
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Enum.flat_map(
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block_rows,
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fn [_, ap_ids] -> ap_ids end
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)
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|> Enum.uniq()
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# Selecting ids of all blockees at once in order to reduce the number of SELECT queries
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{:ok, %{rows: blockee_ap_id_id}} =
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SQL.query(Repo, "SELECT ap_id, id FROM users WHERE ap_id = ANY($1)", [blockee_ap_ids])
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blockee_id_by_ap_id = Enum.into(blockee_ap_id_id, %{}, fn [k, v] -> {k, v} end)
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Enum.each(
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block_rows,
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fn [blocker_id, blockee_ap_ids] ->
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blocker_uuid = Ecto.UUID.cast!(blocker_id)
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for blockee_ap_id <- blockee_ap_ids do
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blockee_id = blockee_id_by_ap_id[blockee_ap_id]
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blockee_uuid = blockee_id && Ecto.UUID.cast!(blockee_id)
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with {:ok, blockee_uuid} <- Ecto.UUID.cast(blockee_id) do
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execute(
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"INSERT INTO user_blocks(blocker_id, blockee_id, inserted_at) " <>
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"VALUES('#{blocker_uuid}'::uuid, '#{blockee_uuid}'::uuid, now()) " <>
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"ON CONFLICT (blocker_id, blockee_id) DO NOTHING"
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)
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else
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_ -> Logger.warn("Missing reference: (#{blocker_uuid}, #{blockee_id})")
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end
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end
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end
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)
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end
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def down, do: :noop
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end
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