58 lines
1.8 KiB
Ruby
58 lines
1.8 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module Gitlab
|
|
module BackgroundMigration
|
|
def self.queue
|
|
@queue ||= BackgroundMigrationWorker.sidekiq_options['queue']
|
|
end
|
|
|
|
# Begins stealing jobs from the background migrations queue, blocking the
|
|
# caller until all jobs have been completed.
|
|
#
|
|
# When a migration raises a StandardError is is going to be retries up to
|
|
# three times, for example, to recover from a deadlock.
|
|
#
|
|
# When Exception is being raised, it enqueues the migration again, and
|
|
# re-raises the exception.
|
|
#
|
|
# steal_class - The name of the class for which to steal jobs.
|
|
def self.steal(steal_class)
|
|
enqueued = Sidekiq::Queue.new(self.queue)
|
|
scheduled = Sidekiq::ScheduledSet.new
|
|
|
|
[scheduled, enqueued].each do |queue|
|
|
queue.each do |job|
|
|
migration_class, migration_args = job.args
|
|
|
|
next unless job.queue == self.queue
|
|
next unless migration_class == steal_class
|
|
|
|
begin
|
|
perform(migration_class, migration_args) if job.delete
|
|
rescue Exception # rubocop:disable Lint/RescueException
|
|
BackgroundMigrationWorker # enqueue this migration again
|
|
.perform_async(migration_class, migration_args)
|
|
|
|
raise
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
##
|
|
# Performs a background migration.
|
|
#
|
|
# class_name - The name of the background migration class as defined in the
|
|
# Gitlab::BackgroundMigration namespace.
|
|
#
|
|
# arguments - The arguments to pass to the background migration's "perform"
|
|
# method.
|
|
def self.perform(class_name, arguments)
|
|
migration_class_for(class_name).new.perform(*arguments)
|
|
end
|
|
|
|
def self.migration_class_for(class_name)
|
|
const_get(class_name)
|
|
end
|
|
end
|
|
end
|