# Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Mix.Tasks.Pleroma.Database do
alias Pleroma.Conversation
- alias Pleroma.Hashtag
alias Pleroma.Maintenance
alias Pleroma.Object
alias Pleroma.Repo
@shortdoc "A collection of database related tasks"
@moduledoc File.read!("docs/administration/CLI_tasks/database.md")
+ # Rolls back a specific migration (leaving subsequent migrations applied)
+ # Based on https://stackoverflow.com/a/53825840
+ def run(["rollback", version]) do
+ start_pleroma()
+
+ version = String.to_integer(version)
+ re = ~r/^#{version}_.*\.exs/
+ path = Application.app_dir(:pleroma, Path.join(["priv", "repo", "migrations"]))
+
+ result =
+ with {:find, "" <> file} <- {:find, Enum.find(File.ls!(path), &String.match?(&1, re))},
+ {:compile, [{mod, _} | _]} <- {:compile, Code.compile_file(Path.join(path, file))},
+ {:rollback, :ok} <- {:rollback, Ecto.Migrator.down(Repo, version, mod)} do
+ {:ok, "Reversed migration: #{file}"}
+ else
+ {:find, _} -> {:error, "No migration found with version prefix: #{version}"}
+ {:compile, e} -> {:error, "Problem compiling migration module: #{inspect(e)}"}
+ {:rollback, e} -> {:error, "Problem reversing migration: #{inspect(e)}"}
+ e -> {:error, "Something unexpected happened: #{inspect(e)}"}
+ end
+
+ IO.inspect(result)
+ end
+
def run(["remove_embedded_objects" | args]) do
{options, [], []} =
OptionParser.parse(
|> Stream.run()
end
- def run(["transfer_hashtags"]) do
- import Ecto.Query
-
- start_pleroma()
-
- Logger.info("Starting transferring object embedded hashtags to `hashtags` table...")
-
- from(
- object in Object,
- left_join: hashtag in assoc(object, :hashtags),
- where: is_nil(hashtag.id),
- where: fragment("(?)->>'tag' != '[]'", object.data),
- select: %{
- id: object.id,
- tag: fragment("(?)->>'tag'", object.data)
- }
- )
- |> Pleroma.Repo.chunk_stream(100, :batches)
- |> Stream.each(fn objects ->
- Logger.info("Processing #{length(objects)} objects...")
-
- Enum.map(
- objects,
- fn object ->
- hashtags =
- object.tag
- |> Jason.decode!()
- |> Enum.filter(&is_bitstring(&1))
-
- Repo.transaction(fn ->
- with {:ok, hashtag_records} <- Hashtag.get_or_create_by_names(hashtags) do
- for hashtag_record <- hashtag_records do
- with {:ok, _} <-
- Ecto.Adapters.SQL.query(
- Repo,
- "insert into hashtags_objects(hashtag_id, object_id) values " <>
- "(#{hashtag_record.id}, #{object.id});"
- ) do
- :noop
- else
- {:error, e} ->
- error =
- "ERROR: could not link object #{object.id} and hashtag " <>
- "#{hashtag_record.id}: #{inspect(e)}"
-
- Logger.error(error)
- Repo.rollback(error)
- end
- end
- else
- e ->
- error = "ERROR: could not create hashtags for object #{object.id}: #{inspect(e)}"
- Logger.error(error)
- Repo.rollback(error)
- end
- end)
- end
- )
- end)
- |> Stream.run()
-
- Logger.info("Done transferring hashtags. Please check logs to ensure no errors.")
- end
-
def run(["vacuum", args]) do
start_pleroma()