1 files changed, 23 insertions, 0 deletions
diff --git a/db/post_migrate/20201028160832_schedule_populate_missing_dismissal_information_for_vulnerabilities.rb b/db/post_migrate/20201028160832_schedule_populate_missing_dismissal_information_for_vulnerabilities.rb
new file mode 100644
index 00000000000..f358ea863db
--- /dev/null
+++ b/db/post_migrate/20201028160832_schedule_populate_missing_dismissal_information_for_vulnerabilities.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class SchedulePopulateMissingDismissalInformationForVulnerabilities < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  BATCH_SIZE = 1_000
+  DELAY_INTERVAL = 3.minutes.to_i
+  MIGRATION_CLASS = 'PopulateMissingVulnerabilityDismissalInformation'
+
+  disable_ddl_transaction!
+
+  def up
+    ::Gitlab::BackgroundMigration::PopulateMissingVulnerabilityDismissalInformation::Vulnerability.broken.each_batch(of: BATCH_SIZE) do |batch, index|
+      vulnerability_ids = batch.pluck(:id)
+      migrate_in(index * DELAY_INTERVAL, MIGRATION_CLASS, vulnerability_ids)
+    end
+  end
+
+  def down
+    # no-op
+  end
+end