33 lines
893 B
Ruby
33 lines
893 B
Ruby
# frozen_string_literal: true
|
|
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
|
|
# for more information on how to write migrations for GitLab.
|
|
|
|
# rescheduling of the revised RemoveRestrictedTodos background migration
|
|
class RemoveRestrictedTodosWithCte < ActiveRecord::Migration[4.2]
|
|
DOWNTIME = false
|
|
disable_ddl_transaction!
|
|
|
|
MIGRATION = 'RemoveRestrictedTodos'.freeze
|
|
BATCH_SIZE = 1000
|
|
DELAY_INTERVAL = 5.minutes.to_i
|
|
|
|
class Project < ActiveRecord::Base
|
|
include EachBatch
|
|
|
|
self.table_name = 'projects'
|
|
end
|
|
|
|
def up
|
|
Project.where('EXISTS (SELECT 1 FROM todos WHERE todos.project_id = projects.id)')
|
|
.each_batch(of: BATCH_SIZE) do |batch, index|
|
|
range = batch.pluck('MIN(id)', 'MAX(id)').first
|
|
|
|
BackgroundMigrationWorker.perform_in(index * DELAY_INTERVAL, MIGRATION, range)
|
|
end
|
|
end
|
|
|
|
def down
|
|
# nothing to do
|
|
end
|
|
end
|