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How to use start_automatic_run method in locust

Best Python code snippet using locust

main.py

Source:main.py

...289        # spawn stats printing greenlet290        stats_printer_greenlet = gevent.spawn(stats_printer(runner.stats))291        stats_printer_greenlet.link_exception(greenlet_exception_handler)292    gevent.spawn(stats_history, runner)293    def start_automatic_run():294        if options.master:295            # wait for worker nodes to connect296            start_time = time.monotonic()297            while len(runner.clients.ready) < options.expect_workers:298                if options.expect_workers_max_wait and options.expect_workers_max_wait < time.monotonic() - start_time:299                    logger.error("Gave up waiting for workers to connect.")300                    runner.quit()301                    sys.exit(1)302                logging.info(303                    "Waiting for workers to be ready, %s of %s connected",304                    len(runner.clients.ready),305                    options.expect_workers,306                )307                # TODO: Handle KeyboardInterrupt and send quit signal to workers that are started.308                #       Right now, if the user sends a ctrl+c, the master will not gracefully309                #       shutdown resulting in all the already started workers to stay active.310                time.sleep(1)311        if not options.worker:312            # apply headless mode defaults313            if options.num_users is None:314                options.num_users = 1315            if options.spawn_rate is None:316                options.spawn_rate = 1317            # start the test318            if environment.shape_class:319                if options.run_time:320                    sys.stderr.write("It makes no sense to combine --run-time and LoadShapes. Bailing out.\n")321                    sys.exit(1)322                environment.runner.start_shape()323                environment.runner.shape_greenlet.join()324                stop_and_optionally_quit()325            else:326                headless_master_greenlet = gevent.spawn(runner.start, options.num_users, options.spawn_rate)327                headless_master_greenlet.link_exception(greenlet_exception_handler)328        if options.run_time:329            logger.info(f"Run time limit set to {options.run_time} seconds")330            spawn_run_time_quit_greenlet()331        elif not options.worker and not environment.shape_class:332            logger.info("No run time limit set, use CTRL+C to interrupt")333    if options.csv_prefix:334        gevent.spawn(stats_csv_writer.stats_writer).link_exception(greenlet_exception_handler)335    if options.headless:336        start_automatic_run()337    input_listener_greenlet = None338    if not options.worker:339        # spawn input listener greenlet340        input_listener_greenlet = gevent.spawn(341            input_listener(342                {343                    "w": lambda: runner.start(runner.user_count + 1, 100)344                    if runner.state != "spawning"345                    else logging.warning("Already spawning users, can't spawn more right now"),346                    "W": lambda: runner.start(runner.user_count + 10, 100)347                    if runner.state != "spawning"348                    else logging.warning("Already spawning users, can't spawn more right now"),349                    "s": lambda: runner.start(max(0, runner.user_count - 1), 100)350                    if runner.state != "spawning"351                    else logging.warning("Spawning users, can't stop right now"),352                    "S": lambda: runner.start(max(0, runner.user_count - 10), 100)353                    if runner.state != "spawning"354                    else logging.warning("Spawning users, can't stop right now"),355                },356            )357        )358        input_listener_greenlet.link_exception(greenlet_exception_handler)359        # ensure terminal is reset, even if there is an unhandled exception in locust or someone360        # does something wild, like calling sys.exit() in the locustfile361        atexit.register(input_listener_greenlet.kill, block=True)362    def shutdown():363        """364        Shut down locust by firing quitting event, printing/writing stats and exiting365        """366        logger.debug("Running teardowns...")367        if input_listener_greenlet is not None:368            input_listener_greenlet.kill(block=False)369        environment.events.quitting.fire(environment=environment, reverse=True)370        # determine the process exit code371        if environment.process_exit_code is not None:372            code = environment.process_exit_code373        elif len(runner.errors) or len(runner.exceptions):374            code = options.exit_code_on_error375        elif log.unhandled_greenlet_exception:376            code = 2377        else:378            code = 0379        logger.info(f"Shutting down (exit code {code})")380        if stats_printer_greenlet is not None:381            stats_printer_greenlet.kill(block=False)382        if headless_master_greenlet is not None:383            headless_master_greenlet.kill(block=False)384        logger.debug("Cleaning up runner...")385        if runner is not None:386            runner.quit()387        if not isinstance(runner, locust.runners.WorkerRunner):388            print_stats(runner.stats, current=False)389            print_percentile_stats(runner.stats)390            print_error_report(runner.stats)391        environment.events.quit.fire(exit_code=code)392        sys.exit(code)393    # install SIGTERM handler394    def sig_term_handler():395        logger.info("Got SIGTERM signal")396        shutdown()397    def save_html_report():398        html_report = get_html_report(environment, show_download_link=False)399        logger.info("writing html report to file: %s", options.html_file)400        with open(options.html_file, "w", encoding="utf-8") as file:401            file.write(html_report)402    gevent.signal_handler(signal.SIGTERM, sig_term_handler)403    try:404        logger.info(f"Starting Locust {version}")405        if options.autostart:406            start_automatic_run()407        main_greenlet.join()408        if options.html_file:409            save_html_report()410    except KeyboardInterrupt:411        if options.html_file:412            save_html_report()413    except Exception:414        raise...

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