1 files changed, 30 insertions, 0 deletions
diff --git a/db/post_migrate/20210511095658_schedule_migrate_project_taggings_context_from_tags_to_topics.rb b/db/post_migrate/20210511095658_schedule_migrate_project_taggings_context_from_tags_to_topics.rb
new file mode 100644
index 00000000000..25d23b771d5
--- /dev/null
+++ b/db/post_migrate/20210511095658_schedule_migrate_project_taggings_context_from_tags_to_topics.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class ScheduleMigrateProjectTaggingsContextFromTagsToTopics < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  BATCH_SIZE = 30_000
+  DELAY_INTERVAL = 2.minutes
+  MIGRATION = 'MigrateProjectTaggingsContextFromTagsToTopics'
+
+  disable_ddl_transaction!
+
+  class Tagging < ActiveRecord::Base
+    include ::EachBatch
+
+    self.table_name = 'taggings'
+  end
+
+  def up
+    queue_background_migration_jobs_by_range_at_intervals(
+      Tagging.where(taggable_type: 'Project', context: 'tags'),
+      MIGRATION,
+      DELAY_INTERVAL,
+      batch_size: BATCH_SIZE
+    )
+  end
+
+  def down
+  end
+end