Merge branch 'bugfix/jsonb-set-fuckup' into 'release/1.1.1'

Fix a migration wiping user info of users that don't have any mutes

See merge request pleroma/pleroma!1856

CHANGELOG.md

@@ -3,6 +3,13 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [1.1.1] - 2019-10-18
+### Fixed
+- One of the migrations between 1.0.0 and 1.1.0 wiping user info of the relay user because of unexpected behavior of postgresql's `jsonb_set`, resulting in inability to post in the default configuration. If you were affected, please run the following query in postgres console, the relay user will be recreated automatically:
+```
+delete from users where ap_id = 'https://your.instance.hostname/relay';
+```
+
 ## [1.1.0] - 2019-10-14
 **Breaking:** The stable branch has been changed from `master` to `stable`. If you want to keep using 1.0, the `release/1.0` branch will receive security updates for 6 months after 1.1 release.
 

lib/mix/tasks/pleroma/database.ex

@@ -54,7 +54,7 @@ def run(["remove_embedded_objects" | args]) do
     Logger.info("Removing embedded objects")
 
     Repo.query!(
-      "update activities set data = jsonb_set(data, '{object}'::text[], data->'object'->'id') where data->'object'->>'id' is not null;",
+      "update activities set data = safe_jsonb_set(data, '{object}'::text[], data->'object'->'id') where data->'object'->>'id' is not null;",
       [],
       timeout: :infinity
     )
@@ -152,7 +152,7 @@ def run(["fix_likes_collections"]) do
         set: [
           data:
             fragment(
-              "jsonb_set(?, '{likes}', '[]'::jsonb, true)",
+              "safe_jsonb_set(?, '{likes}', '[]'::jsonb, true)",
               object.data
             )
         ]

lib/pleroma/object.ex

@@ -181,7 +181,7 @@ def increase_replies_count(ap_id) do
         data:
           fragment(
             """
-            jsonb_set(?, '{repliesCount}',
+            safe_jsonb_set(?, '{repliesCount}',
               (coalesce((?->>'repliesCount')::int, 0) + 1)::varchar::jsonb, true)
             """,
             o.data,
@@ -204,7 +204,7 @@ def decrease_replies_count(ap_id) do
         data:
           fragment(
             """
-            jsonb_set(?, '{repliesCount}',
+            safe_jsonb_set(?, '{repliesCount}',
               (greatest(0, (?->>'repliesCount')::int - 1))::varchar::jsonb, true)
             """,
             o.data,

lib/pleroma/user.ex

@@ -718,7 +718,7 @@ def increase_note_count(%User{} = user) do
       set: [
         info:
           fragment(
-            "jsonb_set(?, '{note_count}', ((?->>'note_count')::int + 1)::varchar::jsonb, true)",
+            "safe_jsonb_set(?, '{note_count}', ((?->>'note_count')::int + 1)::varchar::jsonb, true)",
             u.info,
             u.info
           )
@@ -739,7 +739,7 @@ def decrease_note_count(%User{} = user) do
       set: [
         info:
           fragment(
-            "jsonb_set(?, '{note_count}', (greatest(0, (?->>'note_count')::int - 1))::varchar::jsonb, true)",
+            "safe_jsonb_set(?, '{note_count}', (greatest(0, (?->>'note_count')::int - 1))::varchar::jsonb, true)",
             u.info,
             u.info
           )
@@ -812,7 +812,7 @@ def update_follower_count(%User{} = user) do
         set: [
           info:
             fragment(
-              "jsonb_set(?, '{follower_count}', ?::varchar::jsonb, true)",
+              "safe_jsonb_set(?, '{follower_count}', ?::varchar::jsonb, true)",
               u.info,
               s.count
             )

lib/pleroma/web/activity_pub/utils.ex

@@ -349,7 +349,7 @@ def update_follow_state_for_all(
     try do
       Ecto.Adapters.SQL.query!(
         Repo,
-        "UPDATE activities SET data = jsonb_set(data, '{state}', $1) WHERE data->>'type' = 'Follow' AND data->>'actor' = $2 AND data->>'object' = $3 AND data->>'state' = 'pending'",
+        "UPDATE activities SET data = safe_jsonb_set(data, '{state}', $1) WHERE data->>'type' = 'Follow' AND data->>'actor' = $2 AND data->>'object' = $3 AND data->>'state' = 'pending'",
         [state, actor, object]
       )
 

priv/repo/migrations/20190711042021_create_safe_jsonb_set.exs

@@ -0,0 +1,22 @@
+defmodule Pleroma.Repo.Migrations.CreateSafeJsonbSet do
+  use Ecto.Migration
+  alias Pleroma.User
+
+  def change do
+  execute("""
+  create or replace function safe_jsonb_set(target jsonb, path text[], new_value jsonb, create_missing boolean default true) returns jsonb as $$
+  declare
+    result jsonb;
+  begin
+    result := jsonb_set(target, path, coalesce(new_value, 'null'::jsonb), create_missing);
+    if result is NULL then
+      raise 'jsonb_set tried to wipe the object, please report this incindent to Pleroma bug tracker. https://git.pleroma.social/pleroma/pleroma/issues/new';
+      return target;
+    else
+      return result;
+    end if;
+  end;
+  $$ language plpgsql;
+  """)
+  end
+end

priv/repo/migrations/20190711042024_copy_muted_to_muted_notifications.exs

@@ -3,6 +3,6 @@ defmodule Pleroma.Repo.Migrations.CopyMutedToMutedNotifications do
   alias Pleroma.User
 
   def change do
-  execute("update users set info = jsonb_set(info, '{muted_notifications}', info->'mutes', true) where local = true")
+  execute("update users set info = safe_jsonb_set(info, '{muted_notifications}', info->'mutes', true) where local = true")
   end
 end

test/safe_jsonb_set_test.exs

@@ -0,0 +1,12 @@
+defmodule Pleroma.SafeJsonbSetTest do
+  use Pleroma.DataCase
+
+  test "it doesn't wipe the object when asked to set the value to NULL" do
+    assert %{rows: [[%{"key" => "value", "test" => nil}]]} =
+             Ecto.Adapters.SQL.query!(
+               Pleroma.Repo,
+               "select safe_jsonb_set('{\"key\": \"value\"}'::jsonb, '{test}', NULL);",
+               []
+             )
+  end
+end