Method UpdateRun

coderd/x/chatd/chatdebug/service.go:312–341

UpdateRun updates an existing debug run and emits a run update event. When a terminal status is set without an explicit FinishedAt, the service auto-fills the timestamp so the row is immediately visible to the InsertChatDebugStep atomic guard (finished_at IS NULL). UpdateChatDebugRun itself enforces

(
	ctx context.Context,
	params UpdateRunParams,
)

// never overwrite the original completion timestamp, so calling this
// more than once on an already-finalized run is idempotent.
func (s *Service) UpdateRun(
	ctx context.Context,
	params UpdateRunParams,
) (database.ChatDebugRun, error) {
	if params.Status.IsTerminal() && params.FinishedAt.IsZero() {
		params.FinishedAt = s.clock.Now()
	}
	run, err := s.db.UpdateChatDebugRun(chatdContext(ctx),
		database.UpdateChatDebugRunParams{
			RootChatID:          uuid.NullUUID{},
			ParentChatID:        uuid.NullUUID{},
			ModelConfigID:       uuid.NullUUID{},
			TriggerMessageID:    sql.NullInt64{},
			HistoryTipMessageID: sql.NullInt64{},
			Status:              nullString(string(params.Status)),
			Provider:            sql.NullString{},
			Model:               sql.NullString{},
			Summary:             s.nullJSON(ctx, params.Summary),
			FinishedAt:          nullTime(params.FinishedAt),
			Now:                 s.clock.Now(),
			ID:                  params.ID,
			ChatID:              params.ChatID,
		})
	if err != nil {
		return database.ChatDebugRun{}, err
	}

	s.publishEvent(ctx, run.ChatID, EventKindRunUpdate, run.ID, uuid.Nil)
	return run, nil
}

// errRunFinalized is returned by CreateStep when the parent run has
// already reached a terminal state (finished_at IS NOT NULL). This