Method get_callback_executor

dash/backends/base_server.py:194–209

Get or create the thread pool executor for callback execution. Args: max_workers: Maximum number of worker threads. If None, uses default. Returns: ThreadPoolExecutor instance for running callbacks.

(
        self, max_workers: int | None = None
    )

        self._callback_executor: ThreadPoolExecutor | None = None

    def get_callback_executor(
        self, max_workers: int | None = None
    ) -> ThreadPoolExecutor:
        """Get or create the thread pool executor for callback execution.

        Args:
            max_workers: Maximum number of worker threads. If None, uses default.

        Returns:
            ThreadPoolExecutor instance for running callbacks.
        """
        if self._callback_executor is None:
            self._callback_executor = ThreadPoolExecutor(
                max_workers=max_workers, thread_name_prefix="dash-callback-"
            )
        return self._callback_executor

    def shutdown_executor(self, wait: bool = True) -> None:
        """Shutdown the callback executor.