1 files changed, 28 insertions, 0 deletions
diff --git a/db/post_migrate/20210809123658_orphaned_invite_tokens_cleanup.rb b/db/post_migrate/20210809123658_orphaned_invite_tokens_cleanup.rb
new file mode 100644
index 00000000000..f774db73eaa
--- /dev/null
+++ b/db/post_migrate/20210809123658_orphaned_invite_tokens_cleanup.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+class OrphanedInviteTokensCleanup < ActiveRecord::Migration[6.1]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  TMP_INDEX_NAME = 'tmp_idx_orphaned_invite_tokens'
+  QUERY_CONDITION = "invite_token IS NOT NULL and invite_accepted_at IS NOT NULL and invite_accepted_at < created_at"
+
+  def up
+    membership = define_batchable_model('members')
+
+    add_concurrent_index('members', :id, where: QUERY_CONDITION, name: TMP_INDEX_NAME)
+
+    membership.where(QUERY_CONDITION).pluck(:id).each_slice(10) do |group|
+      membership.where(id: group).where(QUERY_CONDITION).update_all(invite_token: nil)
+    end
+
+    remove_concurrent_index_by_name('members', TMP_INDEX_NAME)
+  end
+
+  def down
+    remove_concurrent_index_by_name('members', TMP_INDEX_NAME) if index_exists_by_name?('members', TMP_INDEX_NAME)
+
+    # This migration is irreversible
+  end
+end