canvas-lms/db/migrate/20120607181141_index_jobs_o...

35 lines
1.0 KiB
Ruby

#
# Copyright (C) 2012 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
class IndexJobsOnLockedBy < ActiveRecord::Migration[4.2]
tag :predeploy
disable_ddl_transaction!
def self.connection
Delayed::Backend::ActiveRecord::Job.connection
end
def self.up
add_index :delayed_jobs, :locked_by, :algorithm => :concurrently, :where => "locked_by IS NOT NULL"
end
def self.down
remove_index :delayed_jobs, :locked_by
end
end