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| author | dcc <dcc@logografos.com> | 2023-09-02 00:52:52 -0700 |
|---|---|---|
| committer | dcc <dcc@logografos.com> | 2023-09-02 00:52:52 -0700 |
| commit | 3a4773c3c2bd0bbef244eb519b07208da9108e49 (patch) | |
| tree | 973567a6f3abb37bfb0f785b1cad14ed55840ef5 /priv/repo/migrations/20200109123126_add_counter_cache_table.exs | |
| download | anni-3a4773c3c2bd0bbef244eb519b07208da9108e49.tar.gz anni-3a4773c3c2bd0bbef244eb519b07208da9108e49.tar.bz2 anni-3a4773c3c2bd0bbef244eb519b07208da9108e49.zip | |
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Diffstat (limited to 'priv/repo/migrations/20200109123126_add_counter_cache_table.exs')
| -rw-r--r-- | priv/repo/migrations/20200109123126_add_counter_cache_table.exs | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/priv/repo/migrations/20200109123126_add_counter_cache_table.exs b/priv/repo/migrations/20200109123126_add_counter_cache_table.exs new file mode 100644 index 0000000..368bc98 --- /dev/null +++ b/priv/repo/migrations/20200109123126_add_counter_cache_table.exs @@ -0,0 +1,59 @@ +# Pleroma: A lightweight social networking server +# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/> +# SPDX-License-Identifier: AGPL-3.0-only + +defmodule Pleroma.Repo.Migrations.AddCounterCacheTable do + use Ecto.Migration + + def up do + create_if_not_exists table(:counter_cache) do + add(:name, :string, null: false) + add(:count, :bigint, null: false, default: 0) + end + + create_if_not_exists(unique_index(:counter_cache, [:name])) + + """ + CREATE OR REPLACE FUNCTION update_status_visibility_counter_cache() + RETURNS TRIGGER AS + $$ + DECLARE + BEGIN + IF TG_OP = 'INSERT' THEN + IF NEW.data->>'type' = 'Create' THEN + EXECUTE 'INSERT INTO counter_cache (name, count) VALUES (''status_visibility_' || activity_visibility(NEW.actor, NEW.recipients, NEW.data) || ''', 1) ON CONFLICT (name) DO UPDATE SET count = counter_cache.count + 1'; + END IF; + RETURN NEW; + ELSIF TG_OP = 'UPDATE' THEN + IF (NEW.data->>'type' = 'Create') and (OLD.data->>'type' = 'Create') and activity_visibility(NEW.actor, NEW.recipients, NEW.data) != activity_visibility(OLD.actor, OLD.recipients, OLD.data) THEN + EXECUTE 'INSERT INTO counter_cache (name, count) VALUES (''status_visibility_' || activity_visibility(NEW.actor, NEW.recipients, NEW.data) || ''', 1) ON CONFLICT (name) DO UPDATE SET count = counter_cache.count + 1'; + EXECUTE 'update counter_cache SET count = counter_cache.count - 1 where count > 0 and name = ''status_visibility_' || activity_visibility(OLD.actor, OLD.recipients, OLD.data) || ''';'; + END IF; + RETURN NEW; + ELSIF TG_OP = 'DELETE' THEN + IF OLD.data->>'type' = 'Create' THEN + EXECUTE 'update counter_cache SET count = counter_cache.count - 1 where count > 0 and name = ''status_visibility_' || activity_visibility(OLD.actor, OLD.recipients, OLD.data) || ''';'; + END IF; + RETURN OLD; + END IF; + END; + $$ + LANGUAGE 'plpgsql'; + """ + |> execute() + + """ + CREATE TRIGGER status_visibility_counter_cache_trigger BEFORE INSERT OR UPDATE of recipients, data OR DELETE ON activities + FOR EACH ROW + EXECUTE PROCEDURE update_status_visibility_counter_cache(); + """ + |> execute() + end + + def down do + execute("drop trigger if exists status_visibility_counter_cache_trigger on activities") + execute("drop function if exists update_status_visibility_counter_cache()") + drop_if_exists(unique_index(:counter_cache, [:name])) + drop_if_exists(table(:counter_cache)) + end +end |
