diff options
Diffstat (limited to 'db/post_migrate/20210802043253_finalize_push_event_payloads_bigint_conversion_3.rb')
-rw-r--r-- | db/post_migrate/20210802043253_finalize_push_event_payloads_bigint_conversion_3.rb | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/db/post_migrate/20210802043253_finalize_push_event_payloads_bigint_conversion_3.rb b/db/post_migrate/20210802043253_finalize_push_event_payloads_bigint_conversion_3.rb deleted file mode 100644 index 289b77f0a5c..00000000000 --- a/db/post_migrate/20210802043253_finalize_push_event_payloads_bigint_conversion_3.rb +++ /dev/null @@ -1,87 +0,0 @@ -# frozen_string_literal: true - -class FinalizePushEventPayloadsBigintConversion3 < ActiveRecord::Migration[6.1] - include Gitlab::Database::MigrationHelpers - - disable_ddl_transaction! - - TABLE_NAME = 'push_event_payloads' - INDEX_NAME = 'index_push_event_payloads_on_event_id_convert_to_bigint' - - def up - ensure_batched_background_migration_is_finished( - job_class_name: 'CopyColumnUsingBackgroundMigrationJob', - table_name: TABLE_NAME, - column_name: 'event_id', - job_arguments: [["event_id"], ["event_id_convert_to_bigint"]] - ) - - return if already_swapped? - - swap_columns - end - - def down - swap_columns - end - - private - - def already_swapped? - push_event_payloads_columns = columns(TABLE_NAME) - event_id = push_event_payloads_columns.find { |c| c.name == 'event_id' } - event_id_convert_to_bigint = push_event_payloads_columns.find { |c| c.name == 'event_id_convert_to_bigint' } - - event_id.sql_type == 'bigint' && event_id_convert_to_bigint.sql_type == 'integer' - end - - def swap_columns - add_concurrent_index TABLE_NAME, :event_id_convert_to_bigint, unique: true, name: INDEX_NAME - - # Add a foreign key on `event_id_convert_to_bigint` before we swap the columns and drop the old FK (fk_36c74129da) - add_concurrent_foreign_key TABLE_NAME, :events, column: :event_id_convert_to_bigint, - 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 events, #{TABLE_NAME} IN ACCESS EXCLUSIVE MODE" - - # Swap column names - temp_name = 'event_id_tmp' - execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:event_id)} TO #{quote_column_name(temp_name)}" - execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:event_id_convert_to_bigint)} TO #{quote_column_name(:event_id)}" - execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(temp_name)} TO #{quote_column_name(:event_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(:event_id, :event_id_convert_to_bigint) - execute "ALTER FUNCTION #{quote_table_name(function_name)} RESET ALL" - - # Swap defaults - change_column_default TABLE_NAME, :event_id, nil - change_column_default TABLE_NAME, :event_id_convert_to_bigint, 0 - - # Swap PK constraint - execute "ALTER TABLE #{TABLE_NAME} DROP CONSTRAINT push_event_payloads_pkey" - rename_index TABLE_NAME, INDEX_NAME, 'push_event_payloads_pkey' - execute "ALTER TABLE #{TABLE_NAME} ADD CONSTRAINT push_event_payloads_pkey PRIMARY KEY USING INDEX push_event_payloads_pkey" - - # Drop original FK on the old int4 `event_id` (fk_36c74129da) - remove_foreign_key TABLE_NAME, name: concurrent_foreign_key_name(TABLE_NAME, :event_id) - # We swapped the columns but the FK for event_id is still using the old name for the event_id_convert_to_bigint column - # So we have to also swap the FK name now that we dropped the other one with the same - rename_constraint( - TABLE_NAME, - concurrent_foreign_key_name(TABLE_NAME, :event_id_convert_to_bigint), - concurrent_foreign_key_name(TABLE_NAME, :event_id) - ) - end - end -end |