X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;ds=inline;f=lib%2Fpleroma%2Frepo.ex;h=b8ea06e33c9a33effe0bce819e0135ae77cc1bf2;hb=4796df0bc39a57b2581168cb8d8fde7779068f2d;hp=f317e4d582e6cea6fee974190e30015797cffb8a;hpb=c7d69e925664ce7125c3938c298d72e94a2a1349;p=akkoma
diff --git a/lib/pleroma/repo.ex b/lib/pleroma/repo.ex
index f317e4d58..b8ea06e33 100644
--- a/lib/pleroma/repo.ex
+++ b/lib/pleroma/repo.ex
@@ -1,5 +1,5 @@
# Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors
+# Copyright © 2017-2021 Pleroma Authors
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Repo do
@@ -8,6 +8,8 @@ defmodule Pleroma.Repo do
adapter: Ecto.Adapters.Postgres,
migration_timestamps: [type: :naive_datetime_usec]
+ use Ecto.Explain
+
import Ecto.Query
require Logger
@@ -49,8 +51,22 @@ defmodule Pleroma.Repo do
end
end
- def chunk_stream(query, chunk_size) do
- # We don't actually need start and end funcitons of resource streaming,
+ @doc """
+ Returns a lazy enumerable that emits all entries from the data store matching the given query.
+
+ `returns_as` use to group records. use the `batches` option to fetch records in bulk.
+
+ ## Examples
+
+ # fetch records one-by-one
+ iex> Pleroma.Repo.chunk_stream(Pleroma.Activity.Queries.by_actor(ap_id), 500)
+
+ # fetch records in bulk
+ iex> Pleroma.Repo.chunk_stream(Pleroma.Activity.Queries.by_actor(ap_id), 500, :batches)
+ """
+ @spec chunk_stream(Ecto.Query.t(), integer(), atom()) :: Enumerable.t()
+ def chunk_stream(query, chunk_size, returns_as \\ :one, query_options \\ []) do
+ # We don't actually need start and end functions of resource streaming,
# but it seems to be the only way to not fetch records one-by-one and
# have individual records be the elements of the stream, instead of
# lists of records
@@ -62,14 +78,19 @@ defmodule Pleroma.Repo do
|> order_by(asc: :id)
|> where([r], r.id > ^last_id)
|> limit(^chunk_size)
- |> all()
+ |> all(query_options)
|> case do
[] ->
{:halt, last_id}
records ->
last_id = List.last(records).id
- {records, last_id}
+
+ if returns_as == :one do
+ {records, last_id}
+ else
+ {[records], last_id}
+ end
end
end,
fn _ -> :ok end