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# frozen_string_literal: true
module Gitlab
module BackgroundMigration
# rubocop: disable Style/Documentation
class MergeRequestAssigneesMigrationProgressCheck
include Gitlab::Utils::StrongMemoize
RESCHEDULE_DELAY = 3.hours
WORKER = 'PopulateMergeRequestAssigneesTable'.freeze
DeadJobsError = Class.new(StandardError)
def perform
raise DeadJobsError, "Only dead background jobs in the queue for #{WORKER}" if !ongoing? && dead_jobs?
if ongoing?
BackgroundMigrationWorker.perform_in(RESCHEDULE_DELAY, self.class.name)
else
Feature.enable(:multiple_merge_request_assignees)
end
end
private
def dead_jobs?
strong_memoize(:dead_jobs) do
migration_klass.dead_jobs?(WORKER)
end
end
def ongoing?
strong_memoize(:ongoing) do
migration_klass.exists?(WORKER) || migration_klass.retrying_jobs?(WORKER)
end
end
def migration_klass
Gitlab::BackgroundMigration
end
end
# rubocop: enable Style/Documentation
end
end
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