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How to use user_classes method in locust

Best Python code snippet using locust

main.py

Source:main.py

1import inspect2import logging3import os4import importlib5import signal6import socket7import sys8import time9import gevent10import locust11from . import log12from .argument_parser import parse_locustfile_option, parse_options13from .env import Environment14from .log import setup_logging, greenlet_exception_logger15from . import stats16from .stats import print_error_report, print_percentile_stats, print_stats, stats_printer, stats_history17from .stats import StatsCSV, StatsCSVFileWriter18from .user import User19from .user.inspectuser import get_task_ratio_dict, print_task_ratio20from .util.timespan import parse_timespan21from .exception import AuthCredentialsError22from .shape import LoadTestShape23from .input_events import input_listener24version = locust.__version__25def is_user_class(item):26    """27    Check if a variable is a runnable (non-abstract) User class28    """29    return bool(inspect.isclass(item) and issubclass(item, User) and item.abstract is False)30def is_shape_class(item):31    """32    Check if a class is a LoadTestShape33    """34    return bool(35        inspect.isclass(item) and issubclass(item, LoadTestShape) and item.__dict__["__module__"] != "locust.shape"36    )37def load_locustfile(path):38    """39    Import given locustfile path and return (docstring, callables).40    Specifically, the locustfile's ``__doc__`` attribute (a string) and a41    dictionary of ``{'name': callable}`` containing all callables which pass42    the "is a Locust" test.43    """44    # Start with making sure the current working dir is in the sys.path45    sys.path.insert(0, os.getcwd())46    # Get directory and locustfile name47    directory, locustfile = os.path.split(path)48    # If the directory isn't in the PYTHONPATH, add it so our import will work49    added_to_path = False50    index = None51    if directory not in sys.path:52        sys.path.insert(0, directory)53        added_to_path = True54    # If the directory IS in the PYTHONPATH, move it to the front temporarily,55    # otherwise other locustfiles -- like Locusts's own -- may scoop the intended56    # one.57    else:58        i = sys.path.index(directory)59        if i != 0:60            # Store index for later restoration61            index = i62            # Add to front, then remove from original position63            sys.path.insert(0, directory)64            del sys.path[i + 1]65    # Perform the import66    source = importlib.machinery.SourceFileLoader(os.path.splitext(locustfile)[0], path)67    imported = source.load_module()68    # Remove directory from path if we added it ourselves (just to be neat)69    if added_to_path:70        del sys.path[0]71    # Put back in original index if we moved it72    if index is not None:73        sys.path.insert(index + 1, directory)74        del sys.path[0]75    # Return our two-tuple76    user_classes = {name: value for name, value in vars(imported).items() if is_user_class(value)}77    # Find shape class, if any, return it78    shape_classes = [value for name, value in vars(imported).items() if is_shape_class(value)]79    if shape_classes:80        shape_class = shape_classes[0]()81    else:82        shape_class = None83    return imported.__doc__, user_classes, shape_class84def create_environment(user_classes, options, events=None, shape_class=None):85    """86    Create an Environment instance from options87    """88    return Environment(89        user_classes=user_classes,90        shape_class=shape_class,91        tags=options.tags,92        exclude_tags=options.exclude_tags,93        events=events,94        host=options.host,95        reset_stats=options.reset_stats,96        stop_timeout=options.stop_timeout,97        parsed_options=options,98    )99def main():100    # find specified locustfile and make sure it exists, using a very simplified101    # command line parser that is only used to parse the -f option102    locustfile = parse_locustfile_option()103    # import the locustfile104    docstring, user_classes, shape_class = load_locustfile(locustfile)105    # parse all command line options106    options = parse_options()107    if options.headful:108        options.headless = False109    if options.slave or options.expect_slaves:110        sys.stderr.write("The --slave/--expect-slaves parameters have been renamed --worker/--expect-workers\n")111        sys.exit(1)112    if options.step_time or options.step_load or options.step_users or options.step_clients:113        sys.stderr.write(114            "The step load feature was removed in Locust 1.3. You can achieve similar results using a LoadTestShape class. See https://docs.locust.io/en/stable/generating-custom-load-shape.html\n"115        )116        sys.exit(1)117    if options.hatch_rate:118        sys.stderr.write("[DEPRECATED] The --hatch-rate parameter has been renamed --spawn-rate\n")119        options.spawn_rate = options.hatch_rate120    # setup logging121    if not options.skip_log_setup:122        if options.loglevel.upper() in ["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]:123            setup_logging(options.loglevel, options.logfile)124        else:125            sys.stderr.write("Invalid --loglevel. Valid values are: DEBUG/INFO/WARNING/ERROR/CRITICAL\n")126            sys.exit(1)127    logger = logging.getLogger(__name__)128    greenlet_exception_handler = greenlet_exception_logger(logger)129    if options.list_commands:130        print("Available Users:")131        for name in user_classes:132            print("    " + name)133        sys.exit(0)134    if not user_classes:135        logger.error("No User class found!")136        sys.exit(1)137    # make sure specified User exists138    if options.user_classes:139        missing = set(options.user_classes) - set(user_classes.keys())140        if missing:141            logger.error("Unknown User(s): %s\n" % (", ".join(missing)))142            sys.exit(1)143        else:144            names = set(options.user_classes) & set(user_classes.keys())145            user_classes = [user_classes[n] for n in names]146    else:147        # list() call is needed to consume the dict_view object in Python 3148        user_classes = list(user_classes.values())149    if os.name != "nt" and not options.master:150        try:151            import resource152            minimum_open_file_limit = 10000153            current_open_file_limit = resource.getrlimit(resource.RLIMIT_NOFILE)[0]154            if current_open_file_limit < minimum_open_file_limit:155                # Increasing the limit to 10000 within a running process should work on at least MacOS.156                # It does not work on all OS:es, but we should be no worse off for trying.157                resource.setrlimit(resource.RLIMIT_NOFILE, [minimum_open_file_limit, resource.RLIM_INFINITY])158        except BaseException:159            logger.warning(160                (161                    f"System open file limit '{current_open_file_limit}' is below minimum setting '{minimum_open_file_limit}'. "162                    "It's not high enough for load testing, and the OS didn't allow locust to increase it by itself. "163                    "See https://github.com/locustio/locust/wiki/Installation#increasing-maximum-number-of-open-files-limit for more info."164                )165            )166    # create locust Environment167    environment = create_environment(user_classes, options, events=locust.events, shape_class=shape_class)168    if shape_class and (options.num_users or options.spawn_rate):169        logger.warning(170            "The specified locustfile contains a shape class but a conflicting argument was specified: users or spawn-rate. Ignoring arguments"171        )172    if options.show_task_ratio:173        print("\n Task ratio per User class")174        print("-" * 80)175        print_task_ratio(user_classes)176        print("\n Total task ratio")177        print("-" * 80)178        print_task_ratio(user_classes, total=True)179        sys.exit(0)180    if options.show_task_ratio_json:181        from json import dumps182        task_data = {183            "per_class": get_task_ratio_dict(user_classes),184            "total": get_task_ratio_dict(user_classes, total=True),185        }186        print(dumps(task_data))187        sys.exit(0)188    if options.master:189        runner = environment.create_master_runner(190            master_bind_host=options.master_bind_host,191            master_bind_port=options.master_bind_port,192        )193    elif options.worker:194        try:195            runner = environment.create_worker_runner(options.master_host, options.master_port)196            logger.debug("Connected to locust master: %s:%s", options.master_host, options.master_port)197        except socket.error as e:198            logger.error("Failed to connect to the Locust master: %s", e)199            sys.exit(-1)200    else:201        runner = environment.create_local_runner()202    # main_greenlet is pointing to runners.greenlet by default, it will point the web greenlet later if in web mode203    main_greenlet = runner.greenlet204    if options.run_time:205        if not options.headless:206            logger.error("The --run-time argument can only be used together with --headless")207            sys.exit(1)208        if options.worker:209            logger.error("--run-time should be specified on the master node, and not on worker nodes")210            sys.exit(1)211        try:212            options.run_time = parse_timespan(options.run_time)213        except ValueError:214            logger.error("Valid --run-time formats are: 20, 20s, 3m, 2h, 1h20m, 3h30m10s, etc.")215            sys.exit(1)216    if options.csv_prefix:217        stats_csv_writer = StatsCSVFileWriter(218            environment, stats.PERCENTILES_TO_REPORT, options.csv_prefix, options.stats_history_enabled219        )220    else:221        stats_csv_writer = StatsCSV(environment, stats.PERCENTILES_TO_REPORT)222    # start Web UI223    if not options.headless and not options.worker:224        # spawn web greenlet225        protocol = "https" if options.tls_cert and options.tls_key else "http"226        try:227            if options.web_host == "*":228                # special check for "*" so that we're consistent with --master-bind-host229                web_host = ""230            else:231                web_host = options.web_host232            if web_host:233                logger.info("Starting web interface at %s://%s:%s" % (protocol, web_host, options.web_port))234            else:235                logger.info(236                    "Starting web interface at %s://0.0.0.0:%s (accepting connections from all network interfaces)"237                    % (protocol, options.web_port)238                )239            web_ui = environment.create_web_ui(240                host=web_host,241                port=options.web_port,242                auth_credentials=options.web_auth,243                tls_cert=options.tls_cert,244                tls_key=options.tls_key,245                stats_csv_writer=stats_csv_writer,246                delayed_start=True,247            )248        except AuthCredentialsError:249            logger.error("Credentials supplied with --web-auth should have the format: username:password")250            sys.exit(1)251    else:252        web_ui = None253    # Fire locust init event which can be used by end-users' code to run setup code that254    # need access to the Environment, Runner or WebUI.255    environment.events.init.fire(environment=environment, runner=runner, web_ui=web_ui)256    if web_ui:257        web_ui.start()258        main_greenlet = web_ui.greenlet259    if options.headless:260        # headless mode261        if options.master:262            # wait for worker nodes to connect263            while len(runner.clients.ready) < options.expect_workers:264                logging.info(265                    "Waiting for workers to be ready, %s of %s connected",266                    len(runner.clients.ready),267                    options.expect_workers,268                )269                time.sleep(1)270        if not options.worker:271            # apply headless mode defaults272            if options.num_users is None:273                options.num_users = 1274            if options.spawn_rate is None:275                options.spawn_rate = 1276            # start the test277            if environment.shape_class:278                environment.runner.start_shape()279            else:280                runner.start(options.num_users, options.spawn_rate)281    def spawn_run_time_limit_greenlet():282        def timelimit_stop():283            logger.info("Time limit reached. Stopping Locust.")284            runner.quit()285        gevent.spawn_later(options.run_time, timelimit_stop).link_exception(greenlet_exception_handler)286    if options.run_time:287        logger.info("Run time limit set to %s seconds" % options.run_time)288        spawn_run_time_limit_greenlet()289    elif options.headless:290        logger.info("No run time limit set, use CTRL+C to interrupt.")291    else:292        pass  # dont log anything - not having a time limit is normal when not running headless293    input_listener_greenlet = None294    if not options.worker:295        # spawn input listener greenlet296        input_listener_greenlet = gevent.spawn(297            input_listener(298                {299                    "w": lambda: runner.spawn_users(1, 100)300                    if runner.state != "spawning"301                    else logging.warning("Already spawning users, can't spawn more right now"),302                    "W": lambda: runner.spawn_users(10, 100)303                    if runner.state != "spawning"304                    else logging.warning("Already spawning users, can't spawn more right now"),305                    "s": lambda: runner.stop_users(1)306                    if runner.state != "spawning"307                    else logging.warning("Spawning users, can't stop right now"),308                    "S": lambda: runner.stop_users(10)309                    if runner.state != "spawning"310                    else logging.warning("Spawning users, can't stop right now"),311                }312            )313        )314        input_listener_greenlet.link_exception(greenlet_exception_handler)315    stats_printer_greenlet = None316    if not options.only_summary and (options.print_stats or (options.headless and not options.worker)):317        # spawn stats printing greenlet318        stats_printer_greenlet = gevent.spawn(stats_printer(runner.stats))319        stats_printer_greenlet.link_exception(greenlet_exception_handler)320    if options.csv_prefix:321        gevent.spawn(stats_csv_writer.stats_writer).link_exception(greenlet_exception_handler)322    gevent.spawn(stats_history, runner)323    def shutdown():324        """325        Shut down locust by firing quitting event, printing/writing stats and exiting326        """327        logger.info("Running teardowns...")328        if input_listener_greenlet is not None:329            input_listener_greenlet.kill(block=False)330        environment.events.quitting.fire(environment=environment, reverse=True)331        # determine the process exit code332        if log.unhandled_greenlet_exception:333            code = 2334        elif environment.process_exit_code is not None:335            code = environment.process_exit_code336        elif len(runner.errors) or len(runner.exceptions):337            code = options.exit_code_on_error338        else:339            code = 0340        logger.info("Shutting down (exit code %s), bye." % code)341        if stats_printer_greenlet is not None:342            stats_printer_greenlet.kill(block=False)343        logger.info("Cleaning up runner...")344        if runner is not None:345            runner.quit()346        print_stats(runner.stats, current=False)347        print_percentile_stats(runner.stats)348        print_error_report(runner.stats)349        sys.exit(code)350    # install SIGTERM handler351    def sig_term_handler():352        logger.info("Got SIGTERM signal")353        shutdown()354    gevent.signal_handler(signal.SIGTERM, sig_term_handler)355    try:356        logger.info("Starting Locust %s" % version)357        main_greenlet.join()358        shutdown()359    except KeyboardInterrupt:...

regulation.py

Source:regulation.py

1from pycurb import PyCurbObject2class Regulation(PyCurbObject):3    fields = ['rule', 'user_classes', 'time_spans', 'priority', 'payment']4    def __init__(self,5                 rule,6                 user_classes=None,7                 time_spans=None,8                 priority=None,9                 payment=None):10        self.rule = rule11        self.user_classes = None if user_classes == [{}] else user_classes12        self.time_spans = None if time_spans == [] else time_spans13        self.priority = priority14        self.payment = payment15    def to_dict(self):...

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