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# frozen_string_literal: true
class SchedulePopulateUserHighestRolesTable < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
BATCH_SIZE = 10_000
DELAY = 5.minutes.to_i
DOWNTIME = false
MIGRATION = 'PopulateUserHighestRolesTable'
disable_ddl_transaction!
class User < ActiveRecord::Base
include EachBatch
scope :active, -> {
where(state: 'active', user_type: nil, bot_type: nil)
.where('ghost IS NOT TRUE')
}
end
def up
# We currently have ~5_300_000 users with the state active on GitLab.com.
# This means it'll schedule ~530 jobs (10k Users each) with a 5 minutes gap,
# so this should take ~44 hours for all background migrations to complete.
User.active.each_batch(of: BATCH_SIZE) do |batch, index|
range = batch.pluck(Arel.sql('MIN(id)'), Arel.sql('MAX(id)')).first
delay = index * DELAY
migrate_in(delay.seconds, MIGRATION, [*range])
end
end
def down
# nothing
end
end
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