gitlab-org--gitlab-foss/db/post_migrate/20190812070645_migrate_private_profile_nulls.rb

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# frozen_string_literal: true
class MigratePrivateProfileNulls < ActiveRecord::Migration[5.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
DELAY = 5.minutes.to_i
BATCH_SIZE = 1_000
disable_ddl_transaction!
class User < ActiveRecord::Base
self.table_name = 'users'
include ::EachBatch
end
def up
# Migration will take about 7 hours
User.where(private_profile: nil).each_batch(of: BATCH_SIZE) do |batch, index|
range = batch.pluck(Arel.sql("MIN(id)"), Arel.sql("MAX(id)")).first
delay = index * DELAY
BackgroundMigrationWorker.perform_in(delay.seconds, 'MigrateNullPrivateProfileToFalse', [*range])
end
end
def down
# noop
end
end