diff options
Diffstat (limited to 'db/migrate/20181002172433_remove_restricted_todos_with_cte.rb')
-rw-r--r-- | db/migrate/20181002172433_remove_restricted_todos_with_cte.rb | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/db/migrate/20181002172433_remove_restricted_todos_with_cte.rb b/db/migrate/20181002172433_remove_restricted_todos_with_cte.rb new file mode 100644 index 00000000000..0a8f4a12266 --- /dev/null +++ b/db/migrate/20181002172433_remove_restricted_todos_with_cte.rb @@ -0,0 +1,32 @@ +# 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 + 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 |