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# frozen_string_literal: true
class AddSourceAndLevelIndexOnNotificationSettings < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
INDEX_WITH_SOURCE_LEVEL_USER_NAME = 'index_notification_settings_on_source_and_level_and_user'
INDEX_WITH_SOURCE_NAME = 'index_notification_settings_on_source_id_and_source_type'
INDEX_WITH_USER_NAME = 'index_notification_settings_on_user_id'
disable_ddl_transaction!
def up
add_concurrent_index :notification_settings, [:source_id, :source_type, :level, :user_id], name: INDEX_WITH_SOURCE_LEVEL_USER_NAME
remove_concurrent_index_by_name :notification_settings, INDEX_WITH_SOURCE_NAME # Above index expands this index
remove_concurrent_index_by_name :notification_settings, INDEX_WITH_USER_NAME # It is redundant as we already have unique index on (user_id, source_id, source_type)
end
def down
add_concurrent_index :notification_settings, [:source_id, :source_type], name: INDEX_WITH_SOURCE_NAME
add_concurrent_index :notification_settings, [:user_id], name: INDEX_WITH_USER_NAME
remove_concurrent_index_by_name :notification_settings, INDEX_WITH_SOURCE_LEVEL_USER_NAME
end
end
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