1 defmodule Pleroma.Repo.Migrations.AddCounterCacheTable do
5 create_if_not_exists table(:counter_cache) do
6 add(:name, :string, null: false)
7 add(:count, :bigint, null: false, default: 0)
10 create_if_not_exists(unique_index(:counter_cache, [:name]))
13 CREATE OR REPLACE FUNCTION update_status_visibility_counter_cache()
18 IF TG_OP = 'INSERT' THEN
19 IF NEW.data->>'type' = 'Create' THEN
20 EXECUTE 'INSERT INTO counter_cache (name, count) VALUES (''status_visibility_' || activity_visibility(NEW.actor, NEW.recipients, NEW.data) || ''', 1) ON CONFLICT (name) DO UPDATE SET count = counter_cache.count + 1';
23 ELSIF TG_OP = 'UPDATE' THEN
24 IF (NEW.data->>'type' = 'Create') and (OLD.data->>'type' = 'Create') and activity_visibility(NEW.actor, NEW.recipients, NEW.data) != activity_visibility(OLD.actor, OLD.recipients, OLD.data) THEN
25 EXECUTE 'INSERT INTO counter_cache (name, count) VALUES (''status_visibility_' || activity_visibility(NEW.actor, NEW.recipients, NEW.data) || ''', 1) ON CONFLICT (name) DO UPDATE SET count = counter_cache.count + 1';
26 EXECUTE 'update counter_cache SET count = counter_cache.count - 1 where count > 0 and name = ''status_visibility_' || activity_visibility(OLD.actor, OLD.recipients, OLD.data) || ''';';
29 ELSIF TG_OP = 'DELETE' THEN
30 IF OLD.data->>'type' = 'Create' THEN
31 EXECUTE 'update counter_cache SET count = counter_cache.count - 1 where count > 0 and name = ''status_visibility_' || activity_visibility(OLD.actor, OLD.recipients, OLD.data) || ''';';
42 CREATE TRIGGER status_visibility_counter_cache_trigger BEFORE INSERT OR UPDATE of recipients, data OR DELETE ON activities
44 EXECUTE PROCEDURE update_status_visibility_counter_cache();
50 execute("drop trigger if exists status_visibility_counter_cache_trigger on activities")
51 execute("drop function if exists update_status_visibility_counter_cache()")
52 drop_if_exists(unique_index(:counter_cache, [:name]))
53 drop_if_exists(table(:counter_cache))