Merge branch 'release/2.2.0' into 'stable'v2.2.0

Release/2.2.0

See merge request pleroma/secteam/pleroma!19

1 files changed, 21 insertions, 2 deletions

diff --git a/lib/pleroma/repo.ex b/lib/pleroma/repo.ex
index f317e4d58..4524bd5e2 100644
--- a/lib/pleroma/repo.ex
+++ b/lib/pleroma/repo.ex
@@ -49,7 +49,21 @@ defmodule Pleroma.Repo do
     end
   end
 
-  def chunk_stream(query, chunk_size) do
+  @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) do
     # We don't actually need start and end funcitons 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
@@ -69,7 +83,12 @@ defmodule Pleroma.Repo do
 
             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