forked from AkkomaGang/akkoma
211 lines
5.7 KiB
Elixir
211 lines
5.7 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Migrators.HashtagsTableMigrator do
|
|
defmodule State do
|
|
use Agent
|
|
|
|
@init_state %{}
|
|
|
|
def start_link(_) do
|
|
Agent.start_link(fn -> @init_state end, name: __MODULE__)
|
|
end
|
|
|
|
def get do
|
|
Agent.get(__MODULE__, & &1)
|
|
end
|
|
|
|
def put(key, value) do
|
|
Agent.update(__MODULE__, fn state ->
|
|
Map.put(state, key, value)
|
|
end)
|
|
end
|
|
|
|
def increment(key, increment \\ 1) do
|
|
Agent.update(__MODULE__, fn state ->
|
|
updated_value = (state[key] || 0) + increment
|
|
Map.put(state, key, updated_value)
|
|
end)
|
|
end
|
|
end
|
|
|
|
use GenServer
|
|
|
|
require Logger
|
|
|
|
import Ecto.Query
|
|
|
|
alias Pleroma.Config
|
|
alias Pleroma.DataMigration
|
|
alias Pleroma.Hashtag
|
|
alias Pleroma.Object
|
|
alias Pleroma.Repo
|
|
|
|
defdelegate state(), to: State, as: :get
|
|
defdelegate put_state(key, value), to: State, as: :put
|
|
defdelegate increment_state(key, increment), to: State, as: :increment
|
|
|
|
defdelegate data_migration(), to: DataMigration, as: :populate_hashtags_table
|
|
|
|
def start_link(_) do
|
|
GenServer.start_link(__MODULE__, nil, name: __MODULE__)
|
|
end
|
|
|
|
@impl true
|
|
def init(_) do
|
|
{:ok, nil, {:continue, :init_state}}
|
|
end
|
|
|
|
@impl true
|
|
def handle_continue(:init_state, _state) do
|
|
{:ok, _} = State.start_link(nil)
|
|
|
|
put_state(:status, :init)
|
|
|
|
dm = data_migration()
|
|
|
|
cond do
|
|
Config.get(:env) == :test ->
|
|
put_state(:status, :noop)
|
|
|
|
is_nil(dm) ->
|
|
put_state(:status, :halt)
|
|
put_state(:message, "Data migration does not exist.")
|
|
|
|
dm.state == :manual ->
|
|
put_state(:status, :noop)
|
|
put_state(:message, "Data migration is in manual execution state.")
|
|
|
|
dm.state == :complete ->
|
|
handle_success()
|
|
|
|
true ->
|
|
send(self(), :migrate_hashtags)
|
|
end
|
|
|
|
{:noreply, nil}
|
|
end
|
|
|
|
@impl true
|
|
def handle_info(:migrate_hashtags, state) do
|
|
data_migration = data_migration()
|
|
|
|
{:ok, data_migration} = DataMigration.update_state(data_migration, :running)
|
|
put_state(:status, :running)
|
|
|
|
Logger.info("Starting transferring object embedded hashtags to `hashtags` table...")
|
|
|
|
max_processed_id = data_migration.data["max_processed_id"] || 0
|
|
|
|
# Note: most objects have Mention-type AS2 tags and no hashtags (but we can't filter them out)
|
|
from(
|
|
object in Object,
|
|
left_join: hashtag in assoc(object, :hashtags),
|
|
where: object.id > ^max_processed_id,
|
|
where: is_nil(hashtag.id),
|
|
where:
|
|
fragment("(?)->'tag' IS NOT NULL AND (?)->'tag' != '[]'::jsonb", object.data, object.data),
|
|
select: %{
|
|
id: object.id,
|
|
tag: fragment("(?)->'tag'", object.data)
|
|
}
|
|
)
|
|
|> Repo.chunk_stream(100, :batches, timeout: :infinity)
|
|
|> Stream.each(fn objects ->
|
|
object_ids = Enum.map(objects, & &1.id)
|
|
|
|
failed_ids =
|
|
objects
|
|
|> Enum.map(&transfer_object_hashtags(&1))
|
|
|> Enum.filter(&(elem(&1, 0) == :error))
|
|
|> Enum.map(&elem(&1, 1))
|
|
|
|
for failed_id <- failed_ids do
|
|
_ =
|
|
Repo.query(
|
|
"INSERT INTO data_migration_failed_ids(data_migration_id, record_id) " <>
|
|
"VALUES ($1, $2) ON CONFLICT DO NOTHING;",
|
|
[data_migration.id, failed_id]
|
|
)
|
|
end
|
|
|
|
_ =
|
|
Repo.query(
|
|
"DELETE FROM data_migration_failed_ids WHERE id = ANY($1)",
|
|
[object_ids -- failed_ids]
|
|
)
|
|
|
|
max_object_id = Enum.at(object_ids, -1)
|
|
_ = DataMigration.update(data_migration, %{data: %{"max_processed_id" => max_object_id}})
|
|
|
|
increment_state(:processed_count, length(object_ids))
|
|
increment_state(:failed_count, length(failed_ids))
|
|
|
|
# A quick and dirty approach to controlling the load this background migration imposes
|
|
sleep_interval = Config.get([:populate_hashtags_table, :sleep_interval_ms], 0)
|
|
Process.sleep(sleep_interval)
|
|
end)
|
|
|> Stream.run()
|
|
|
|
with {:ok, %{rows: [[0]]}} <-
|
|
Repo.query(
|
|
"SELECT COUNT(record_id) FROM data_migration_failed_ids WHERE data_migration_id = $1;",
|
|
[data_migration.id]
|
|
) do
|
|
put_state(:status, :complete)
|
|
_ = DataMigration.update_state(data_migration, :complete)
|
|
|
|
handle_success()
|
|
else
|
|
_ ->
|
|
put_state(:status, :failed)
|
|
put_state(:message, "Please check data_migration_failed_ids records.")
|
|
end
|
|
|
|
{:noreply, state}
|
|
end
|
|
|
|
defp transfer_object_hashtags(object) do
|
|
hashtags = Object.object_data_hashtags(%{"tag" => object.tag})
|
|
|
|
Repo.transaction(fn ->
|
|
with {:ok, hashtag_records} <- Hashtag.get_or_create_by_names(hashtags) do
|
|
for hashtag_record <- hashtag_records do
|
|
with {:ok, _} <-
|
|
Repo.query(
|
|
"insert into hashtags_objects(hashtag_id, object_id) values ($1, $2);",
|
|
[hashtag_record.id, object.id]
|
|
) do
|
|
nil
|
|
else
|
|
{:error, e} ->
|
|
error =
|
|
"ERROR: could not link object #{object.id} and hashtag " <>
|
|
"#{hashtag_record.id}: #{inspect(e)}"
|
|
|
|
Logger.error(error)
|
|
Repo.rollback(object.id)
|
|
end
|
|
end
|
|
|
|
object.id
|
|
else
|
|
e ->
|
|
error = "ERROR: could not create hashtags for object #{object.id}: #{inspect(e)}"
|
|
Logger.error(error)
|
|
Repo.rollback(object.id)
|
|
end
|
|
end)
|
|
end
|
|
|
|
defp handle_success do
|
|
put_state(:status, :complete)
|
|
|
|
unless Config.improved_hashtag_timeline() do
|
|
Config.put(Config.improved_hashtag_timeline_path(), true)
|
|
end
|
|
|
|
:ok
|
|
end
|
|
end
|