@impl true
def handle_info(:migrate_hashtags, state) do
+ State.clear()
+
data_migration = data_migration()
persistent_data = Map.take(data_migration.data, ["max_processed_id"])
DataMigration.update(data_migration, %{state: :running, data: persistent_data})
update_status(:running)
+ put_stat(:started_at, NaiveDateTime.utc_now())
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)
- }
- )
+ query()
+ |> where([object], object.id > ^max_processed_id)
|> Repo.chunk_stream(100, :batches, timeout: :infinity)
|> Stream.each(fn objects ->
object_ids = Enum.map(objects, & &1.id)
_ =
Repo.query(
- "DELETE FROM data_migration_failed_ids WHERE id = ANY($1)",
- [object_ids -- failed_ids]
+ "DELETE FROM data_migration_failed_ids " <>
+ "WHERE data_migration_id = $1 AND record_id = ANY($2)",
+ [data_migration.id, object_ids -- failed_ids]
)
max_object_id = Enum.at(object_ids, -1)
increment_stat(:processed_count, length(object_ids))
increment_stat(:failed_count, length(failed_ids))
+ put_stat(
+ :records_per_second,
+ state()[:processed_count] /
+ Enum.max([NaiveDateTime.diff(NaiveDateTime.utc_now(), state()[:started_at]), 1])
+ )
+
persist_stats(data_migration)
# A quick and dirty approach to controlling the load this background migration imposes
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
- _ = DataMigration.update_state(data_migration, :complete)
+ with 0 <- failures_count(data_migration.id) do
+ {:ok, data_migration} = DataMigration.update_state(data_migration, :complete)
handle_success(data_migration)
else
{:noreply, state}
end
+ defp query do
+ # Note: most objects have Mention-type AS2 tags and no hashtags (but we can't filter them out)
+ # Note: not checking activity type; HashtagsCleanupWorker should clean up unused records later
+ from(
+ object in Object,
+ where:
+ fragment("(?)->'tag' IS NOT NULL AND (?)->'tag' != '[]'::jsonb", object.data, object.data),
+ select: %{
+ id: object.id,
+ tag: fragment("(?)->'tag'", object.data)
+ }
+ )
+ |> join(:left, [o], hashtags_objects in fragment("SELECT object_id FROM hashtags_objects"),
+ on: hashtags_objects.object_id == o.id
+ )
+ |> where([_o, hashtags_objects], is_nil(hashtags_objects.object_id))
+ end
+
defp transfer_object_hashtags(object) do
- hashtags = Object.object_data_hashtags(%{"tag" => object.tag})
+ embedded_tags = if Map.has_key?(object, :tag), do: object.tag, else: object.data["tag"]
+ hashtags = Object.object_data_hashtags(%{"tag" => embedded_tags})
+
+ if Enum.any?(hashtags) do
+ transfer_object_hashtags(object, hashtags)
+ else
+ {:ok, object.id}
+ end
+ end
+ defp transfer_object_hashtags(object, hashtags) do
Repo.transaction(fn ->
with {:ok, hashtag_records} <- Hashtag.get_or_create_by_names(hashtags) do
for hashtag_record <- hashtag_records do
end)
end
+ @doc "Approximate count for current iteration (including processed records count)"
+ def count(force \\ false, timeout \\ :infinity) do
+ stored_count = state()[:count]
+
+ if stored_count && !force do
+ stored_count
+ else
+ processed_count = state()[:processed_count] || 0
+ max_processed_id = data_migration().data["max_processed_id"] || 0
+ query = where(query(), [object], object.id > ^max_processed_id)
+
+ count = Repo.aggregate(query, :count, :id, timeout: timeout) + processed_count
+ put_stat(:count, count)
+ count
+ end
+ end
+
defp persist_stats(data_migration) do
runner_state = Map.drop(state(), [:status])
_ = DataMigration.update(data_migration, %{data: runner_state})
defp handle_success(data_migration) do
update_status(:complete)
- unless data_migration.feature_lock || Config.improved_hashtag_timeline() do
- Config.put(Config.improved_hashtag_timeline_path(), true)
- end
+ cond do
+ data_migration.feature_lock ->
+ :noop
- :ok
+ not is_nil(Config.improved_hashtag_timeline()) ->
+ :noop
+
+ true ->
+ Config.put(Config.improved_hashtag_timeline_path(), true)
+ :ok
+ end
end
def failed_objects_query do
|> order_by([o], asc: o.id)
end
+ def failures_count(data_migration_id \\ nil) do
+ data_migration_id = data_migration_id || data_migration().id
+
+ with {:ok, %{rows: [[count]]}} <-
+ Repo.query(
+ "SELECT COUNT(record_id) FROM data_migration_failed_ids WHERE data_migration_id = $1;",
+ [data_migration_id]
+ ) do
+ count
+ end
+ end
+
+ def retry_failed do
+ data_migration = data_migration()
+
+ failed_objects_query()
+ |> Repo.chunk_stream(100, :one)
+ |> Stream.each(fn object ->
+ with {:ok, _} <- transfer_object_hashtags(object) do
+ _ =
+ Repo.query(
+ "DELETE FROM data_migration_failed_ids " <>
+ "WHERE data_migration_id = $1 AND record_id = $2",
+ [data_migration.id, object.id]
+ )
+ end
+ end)
+ |> Stream.run()
+ end
+
def force_continue do
send(whereis(), :migrate_hashtags)
end
force_continue()
end
+ def force_complete do
+ {:ok, data_migration} = DataMigration.update_state(data_migration(), :complete)
+
+ handle_success(data_migration)
+ end
+
defp update_status(status, message \\ nil) do
put_stat(:status, status)
put_stat(:message, message)
projects / akkoma / blobdiff