How to use the pyexasol.http_transport.ExaSQLImportThread function in pyexasol

Get proxy strings from each child process
        Pass proxy strings to parent process and use it for import_parallel() call
        """
        from .http_transport import ExaSQLImportThread

        if import_params is None:
            import_params = {}

        if 'format' in import_params:
            compression = False
        else:
            compression = self.options['compression']

        # There is no need to run separate thread here, all work is performed in child processes
        # We simply reuse thread class to keep logic in one place
        sql_thread = ExaSQLImportThread(self, exa_proxy_list, compression, table, import_params)
        sql_thread.run_sql()

if import_params is None:
            import_params = {}

        if 'format' in import_params:
            compression = False
        else:
            compression = self.options['compression']

        if not callable(callback):
            raise ValueError('Callback argument is not callable')

        try:
            http_proc = ExaHTTPProcess(self.ws_host, self.ws_port, compression, self.options['encryption'], HTTP_IMPORT)
            http_proc.start()

            sql_thread = ExaSQLImportThread(self, http_proc.get_proxy(), compression, table, import_params)
            sql_thread.set_http_proc(http_proc)
            sql_thread.start()

            result = callback(http_proc.write_pipe, src, **callback_params)
            http_proc.write_pipe.close()

            http_proc.join()
            sql_thread.join()

            return result
        except Exception as e:
            # Close HTTP Server if it is still running
            if 'http_proc' in locals():
                http_proc.terminate()

            # Give higher priority to SQL thread exception