diff options
Diffstat (limited to 'db/post_migrate/20210622045705_finalize_events_bigint_conversion.rb')
-rw-r--r-- | db/post_migrate/20210622045705_finalize_events_bigint_conversion.rb | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/db/post_migrate/20210622045705_finalize_events_bigint_conversion.rb b/db/post_migrate/20210622045705_finalize_events_bigint_conversion.rb deleted file mode 100644 index 1f0bdfc5012..00000000000 --- a/db/post_migrate/20210622045705_finalize_events_bigint_conversion.rb +++ /dev/null @@ -1,86 +0,0 @@ -# frozen_string_literal: true - -class FinalizeEventsBigintConversion < ActiveRecord::Migration[6.1] - include Gitlab::Database::MigrationHelpers - - disable_ddl_transaction! - - TABLE_NAME = 'events' - - def up - ensure_batched_background_migration_is_finished( - job_class_name: 'CopyColumnUsingBackgroundMigrationJob', - table_name: TABLE_NAME, - column_name: 'id', - job_arguments: [["id"], ["id_convert_to_bigint"]] - ) - - swap - end - - def down - swap - end - - private - - def swap - # This is to replace the existing "events_pkey" PRIMARY KEY, btree (id) - add_concurrent_index TABLE_NAME, :id_convert_to_bigint, unique: true, name: 'index_events_on_id_convert_to_bigint' - # This is to replace the existing "index_events_on_project_id_and_id" btree (project_id, id) - add_concurrent_index TABLE_NAME, [:project_id, :id_convert_to_bigint], name: 'index_events_on_project_id_and_id_convert_to_bigint' - # This is to replace the existing "index_events_on_project_id_and_id_desc_on_merged_action" btree (project_id, id DESC) WHERE action = 7 - add_concurrent_index TABLE_NAME, [:project_id, :id_convert_to_bigint], order: { id_convert_to_bigint: :desc }, - where: "action = 7", name: 'index_events_on_project_id_and_id_bigint_desc_on_merged_action' - - # Add a FK on `push_event_payloads(event_id)` to `id_convert_to_bigint`, the old FK (fk_36c74129da) - # will be removed when events_pkey constraint is droppped. - fk_event_id = concurrent_foreign_key_name(:push_event_payloads, :event_id) - fk_event_id_tmp = "#{fk_event_id}_tmp" - add_concurrent_foreign_key :push_event_payloads, TABLE_NAME, - column: :event_id, target_column: :id_convert_to_bigint, - name: fk_event_id_tmp, on_delete: :cascade, reverse_lock_order: true - - with_lock_retries(raise_on_exhaustion: true) do - # We'll need ACCESS EXCLUSIVE lock on the related tables, - # lets make sure it can be acquired from the start. - # Lock order should be - # 1. events - # 2. push_event_payloads - # in order to match the order in EventCreateService#create_push_event, - # and avoid deadlocks. - execute "LOCK TABLE #{TABLE_NAME}, push_event_payloads IN ACCESS EXCLUSIVE MODE" - - # Swap column names - temp_name = 'id_tmp' - execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:id)} TO #{quote_column_name(temp_name)}" - execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:id_convert_to_bigint)} TO #{quote_column_name(:id)}" - execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(temp_name)} TO #{quote_column_name(:id_convert_to_bigint)}" - - # We need to update the trigger function in order to make PostgreSQL to - # regenerate the execution plan for it. This is to avoid type mismatch errors like - # "type of parameter 15 (bigint) does not match that when preparing the plan (integer)" - function_name = Gitlab::Database::UnidirectionalCopyTrigger.on_table(TABLE_NAME, connection: connection).name(:id, :id_convert_to_bigint) - execute "ALTER FUNCTION #{quote_table_name(function_name)} RESET ALL" - - # Swap defaults - execute "ALTER SEQUENCE events_id_seq OWNED BY #{TABLE_NAME}.id" - change_column_default TABLE_NAME, :id, -> { "nextval('events_id_seq'::regclass)" } - change_column_default TABLE_NAME, :id_convert_to_bigint, 0 - - # Swap PK constraint - execute "ALTER TABLE #{TABLE_NAME} DROP CONSTRAINT events_pkey CASCADE" # this will drop fk_36c74129da - rename_index TABLE_NAME, 'index_events_on_id_convert_to_bigint', 'events_pkey' - execute "ALTER TABLE #{TABLE_NAME} ADD CONSTRAINT events_pkey PRIMARY KEY USING INDEX events_pkey" - - # Rename the rest of the indexes (we already hold an exclusive lock, so no need to use DROP INDEX CONCURRENTLY here - execute 'DROP INDEX index_events_on_project_id_and_id' - rename_index TABLE_NAME, 'index_events_on_project_id_and_id_convert_to_bigint', 'index_events_on_project_id_and_id' - execute 'DROP INDEX index_events_on_project_id_and_id_desc_on_merged_action' - rename_index TABLE_NAME, 'index_events_on_project_id_and_id_bigint_desc_on_merged_action', 'index_events_on_project_id_and_id_desc_on_merged_action' - - # Change the name of the temporary FK - rename_constraint(:push_event_payloads, fk_event_id_tmp, fk_event_id) - end - end -end |