alias __MODULE__.State
alias Pleroma.Config
- alias Pleroma.DataMigration
alias Pleroma.Hashtag
alias Pleroma.Object
alias Pleroma.Repo
- defdelegate state(), to: State, as: :get
- defdelegate put_stat(key, value), to: State, as: :put
- defdelegate increment_stat(key, increment), to: State, as: :increment
+ defdelegate data_migration(), to: Pleroma.DataMigration, as: :populate_hashtags_table
+ defdelegate data_migration_id(), to: State
- defdelegate data_migration(), to: DataMigration, as: :populate_hashtags_table
+ defdelegate state(), to: State
+ defdelegate persist_state(), to: State, as: :persist_to_db
+ defdelegate get_stat(key, value \\ nil), to: State, as: :get_data_key
+ defdelegate put_stat(key, value), to: State, as: :put_data_key
+ defdelegate increment_stat(key, increment), to: State, as: :increment_data_key
+ @feature_config_path [:database, :improved_hashtag_timeline]
@reg_name {:global, __MODULE__}
def whereis, do: GenServer.whereis(@reg_name)
+ def feature_state, do: Config.get(@feature_config_path)
+
def start_link(_) do
case whereis() do
nil ->
def handle_continue(:init_state, _state) do
{:ok, _} = State.start_link(nil)
- update_status(:init)
-
data_migration = data_migration()
manual_migrations = Config.get([:instance, :manual_data_migrations], [])
update_status(:noop)
is_nil(data_migration) ->
- update_status(:halt, "Data migration does not exist.")
+ message = "Data migration does not exist."
+ update_status(:failed, message)
+ Logger.error("#{__MODULE__}: #{message}")
data_migration.state == :manual or data_migration.name in manual_migrations ->
- update_status(:noop, "Data migration is in manual execution state.")
+ message = "Data migration is in manual execution or manual fix mode."
+ update_status(:manual, message)
+ Logger.warn("#{__MODULE__}: #{message}")
data_migration.state == :complete ->
- handle_success(data_migration)
+ on_complete(data_migration)
true ->
send(self(), :migrate_hashtags)
@impl true
def handle_info(:migrate_hashtags, state) do
- State.clear()
+ State.reinit()
update_status(:running)
+ put_stat(:iteration_processed_count, 0)
put_stat(:started_at, NaiveDateTime.utc_now())
- data_migration = data_migration()
- persistent_data = Map.take(data_migration.data, ["max_processed_id"])
-
- {:ok, data_migration} =
- DataMigration.update(data_migration, %{state: :running, data: persistent_data})
-
- Logger.info("Starting transferring object embedded hashtags to `hashtags` table...")
+ data_migration_id = data_migration_id()
+ max_processed_id = get_stat(:max_processed_id, 0)
- max_processed_id = data_migration.data["max_processed_id"] || 0
+ Logger.info("Transferring embedded hashtags to `hashtags` (from oid: #{max_processed_id})...")
query()
|> where([object], object.id > ^max_processed_id)
|> Stream.each(fn objects ->
object_ids = Enum.map(objects, & &1.id)
+ results = Enum.map(objects, &transfer_object_hashtags(&1))
+
failed_ids =
- objects
- |> Enum.map(&transfer_object_hashtags(&1))
+ results
|> Enum.filter(&(elem(&1, 0) == :error))
|> Enum.map(&elem(&1, 1))
+ # Count of objects with hashtags (`{:noop, id}` is returned for objects having other AS2 tags)
+ chunk_affected_count =
+ results
+ |> Enum.filter(&(elem(&1, 0) == :ok))
+ |> length()
+
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]
+ [data_migration_id, failed_id]
)
end
Repo.query(
"DELETE FROM data_migration_failed_ids " <>
"WHERE data_migration_id = $1 AND record_id = ANY($2)",
- [data_migration.id, object_ids -- failed_ids]
+ [data_migration_id, object_ids -- failed_ids]
)
max_object_id = Enum.at(object_ids, -1)
put_stat(:max_processed_id, max_object_id)
+ increment_stat(:iteration_processed_count, length(object_ids))
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)
+ increment_stat(:affected_count, chunk_affected_count)
+ put_stat(:records_per_second, records_per_second())
+ persist_state()
# A quick and dirty approach to controlling the load this background migration imposes
sleep_interval = Config.get([:populate_hashtags_table, :sleep_interval_ms], 0)
end)
|> Stream.run()
- with 0 <- failures_count(data_migration.id) do
- _ = delete_non_create_activities_hashtags()
+ fault_rate = fault_rate()
+ put_stat(:fault_rate, fault_rate)
+ fault_rate_allowance = Config.get([:populate_hashtags_table, :fault_rate_allowance], 0)
- {:ok, data_migration} = DataMigration.update_state(data_migration, :complete)
+ cond do
+ fault_rate == 0 ->
+ set_complete()
- handle_success(data_migration)
- else
- _ ->
- _ = DataMigration.update_state(data_migration, :failed)
+ is_float(fault_rate) and fault_rate <= fault_rate_allowance ->
+ message = """
+ Done with fault rate of #{fault_rate} which doesn't exceed #{fault_rate_allowance}.
+ Putting data migration to manual fix mode. Check `retry_failed/0`.
+ """
+
+ Logger.warn("#{__MODULE__}: #{message}")
+ update_status(:manual, message)
+ on_complete(data_migration())
- update_status(:failed, "Please check data_migration_failed_ids records.")
+ true ->
+ message = "Too many failures. Check data_migration_failed_ids records / `retry_failed/0`."
+ Logger.error("#{__MODULE__}: #{message}")
+ update_status(:failed, message)
end
+ persist_state()
{:noreply, state}
end
+ def fault_rate do
+ with failures_count when is_integer(failures_count) <- failures_count() do
+ failures_count / Enum.max([get_stat(:affected_count, 0), 1])
+ else
+ _ -> :error
+ end
+ end
+
+ defp records_per_second do
+ get_stat(:iteration_processed_count, 0) / Enum.max([running_time(), 1])
+ end
+
+ defp running_time do
+ NaiveDateTime.diff(NaiveDateTime.utc_now(), get_stat(:started_at, NaiveDateTime.utc_now()))
+ end
+
@hashtags_objects_cleanup_query """
DELETE FROM hashtags_objects WHERE object_id IN
(SELECT DISTINCT objects.id FROM objects
WHERE hashtags_objects.hashtag_id IS NULL);
"""
+ @doc """
+ Deletes `hashtags_objects` for legacy objects not asoociated with Create activity.
+ Also deletes unreferenced `hashtags` records (might occur after deletion of `hashtags_objects`).
+ """
def delete_non_create_activities_hashtags do
{:ok, %{num_rows: hashtags_objects_count}} =
Repo.query(@hashtags_objects_cleanup_query, [], timeout: :infinity)
|> where([_o, hashtags_objects], is_nil(hashtags_objects.object_id))
end
+ @spec transfer_object_hashtags(Map.t()) :: {:noop | :ok | :error, integer()}
defp transfer_object_hashtags(object) do
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}
+ {:noop, object.id}
end
end
Repo.transaction(fn ->
with {:ok, hashtag_records} <- Hashtag.get_or_create_by_names(hashtags) do
maps = Enum.map(hashtag_records, &%{hashtag_id: &1.id, object_id: object.id})
- expected_rows = length(hashtag_records)
-
- with {^expected_rows, _} <- Repo.insert_all("hashtags_objects", maps) do
- object.id
- else
+ base_error = "ERROR when inserting hashtags_objects for object with id #{object.id}"
+
+ try do
+ with {rows_count, _} when is_integer(rows_count) <-
+ Repo.insert_all("hashtags_objects", maps, on_conflict: :nothing) do
+ object.id
+ else
+ e ->
+ Logger.error("#{base_error}: #{inspect(e)}")
+ Repo.rollback(object.id)
+ end
+ rescue
e ->
- error =
- "ERROR when inserting #{expected_rows} hashtags_objects " <>
- "for object #{object.id}: #{inspect(e)}"
-
- Logger.error(error)
+ Logger.error("#{base_error}: #{inspect(e)}")
Repo.rollback(object.id)
end
else
@doc "Approximate count for current iteration (including processed records count)"
def count(force \\ false, timeout \\ :infinity) do
- stored_count = state()[:count]
+ stored_count = get_stat(: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
+ processed_count = get_stat(:processed_count, 0)
+ max_processed_id = get_stat(: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)
+ persist_state()
+
count
end
end
- defp persist_stats(data_migration) do
- runner_state = Map.drop(state(), [:status])
- _ = DataMigration.update(data_migration, %{data: runner_state})
- end
-
- defp handle_success(data_migration) do
- update_status(:complete)
-
+ defp on_complete(data_migration) do
cond do
data_migration.feature_lock ->
:noop
- not is_nil(Config.get([:database, :improved_hashtag_timeline])) ->
+ not is_nil(feature_state()) ->
:noop
true ->
- Config.put([:database, :improved_hashtag_timeline], true)
+ Config.put(@feature_config_path, true)
:ok
end
end
|> join(:inner, [o], dmf in fragment("SELECT * FROM data_migration_failed_ids"),
on: dmf.record_id == o.id
)
- |> where([_o, dmf], dmf.data_migration_id == ^data_migration().id)
+ |> where([_o, dmf], dmf.data_migration_id == ^data_migration_id())
|> order_by([o], asc: o.id)
end
- def failures_count(data_migration_id \\ nil) do
- data_migration_id = data_migration_id || data_migration().id
-
+ def failures_count do
with {:ok, %{rows: [[count]]}} <-
Repo.query(
"SELECT COUNT(record_id) FROM data_migration_failed_ids WHERE data_migration_id = $1;",
- [data_migration_id]
+ [data_migration_id()]
) do
count
end
end
def retry_failed do
- data_migration = data_migration()
+ data_migration_id = data_migration_id()
failed_objects_query()
|> Repo.chunk_stream(100, :one)
|> Stream.each(fn object ->
- with {:ok, _} <- transfer_object_hashtags(object) do
+ with {res, _} when res != :error <- 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]
+ [data_migration_id, object.id]
)
end
end)
|> Stream.run()
+
+ put_stat(:failed_count, failures_count())
+ persist_state()
+
+ force_continue()
end
def force_continue do
end
def force_restart do
- {:ok, _} = DataMigration.update(data_migration(), %{state: :pending, data: %{}})
+ :ok = State.reset()
force_continue()
end
- def force_complete do
- {:ok, data_migration} = DataMigration.update_state(data_migration(), :complete)
-
- handle_success(data_migration)
+ def set_complete do
+ update_status(:complete)
+ persist_state()
+ on_complete(data_migration())
end
defp update_status(status, message \\ nil) do
- put_stat(:status, status)
+ put_stat(:state, status)
put_stat(:message, message)
end
end
projects / akkoma / blobdiff