Merge branch 'hotfix/notification-migration' into 'develop'

Chunk the notification type backfill migration

See merge request pleroma/pleroma!2653
This commit is contained in:
lain 2020-06-16 21:07:04 +00:00
commit 83e5b95102
2 changed files with 29 additions and 1 deletions

View file

@ -18,7 +18,7 @@ defmodule Pleroma.MigrationHelper.NotificationBackfill do
)
query
|> Repo.all()
|> Repo.chunk_stream(100)
|> Enum.each(fn notification ->
type =
notification.activity

View file

@ -8,6 +8,7 @@ defmodule Pleroma.Repo do
adapter: Ecto.Adapters.Postgres,
migration_timestamps: [type: :naive_datetime_usec]
import Ecto.Query
require Logger
defmodule Instrumenter do
@ -78,6 +79,33 @@ defmodule Pleroma.Repo do
:ok
end
end
def chunk_stream(query, chunk_size) 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
# lists of records
Stream.resource(
fn -> 0 end,
fn
last_id ->
query
|> order_by(asc: :id)
|> where([r], r.id > ^last_id)
|> limit(^chunk_size)
|> all()
|> case do
[] ->
{:halt, last_id}
records ->
last_id = List.last(records).id
{records, last_id}
end
end,
fn _ -> :ok end
)
end
end
defmodule Pleroma.Repo.UnappliedMigrationsError do