gitlab-org--gitlab-foss/lib/gitlab/background_migration.rb
Yorick Peterse d83ee2bbd1
Add the ability to perform background migrations
Background migrations can be used to perform long running data
migrations without these blocking a deployment procedure.

See MR https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11854 for
more information.
2017-06-12 13:24:04 +02:00

31 lines
952 B
Ruby

module Gitlab
module BackgroundMigration
# Begins stealing jobs from the background migrations queue, blocking the
# caller until all jobs have been completed.
#
# steal_class - The name of the class for which to steal jobs.
def self.steal(steal_class)
queue = Sidekiq::Queue.
new(BackgroundMigrationWorker.sidekiq_options['queue'])
queue.each do |job|
migration_class, migration_args = job.args
next unless migration_class == steal_class
perform(migration_class, migration_args)
job.delete
end
end
# 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)
const_get(class_name).new.perform(*arguments)
end
end
end