Docker Selenium Multi Client Test.

selenium_test.py

# docker run -d -p 4444:4444 selenium/standalone-chrome:4.0.0-beta-1-20210215
# python selenium_test.py
import uuid
from datetime import datetime
from multiprocessing import Pool
from random import randint
from time import sleep

import pandas as pd
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities


def get_remote_driver(max_try_count=10, sleep_time=10):
    try_count = 0
    driver_created = False
    while try_count < max_try_count and not driver_created:
        try:
            driver = webdriver.Remote(command_executor='http://localhost:4444/wd/hub',
                                      desired_capabilities=DesiredCapabilities.CHROME)
            driver_created = True
        except Exception as e:
            print(f"Exception={e}")
            print("Sleeping 10 seconds...")
            sleep(sleep_time)

    if not driver_created:
        raise RuntimeError("Can't connect to remote driver")

    return driver


def throw_away_function(_):
    return check_browser()


def check_browser():
    sleep_time = randint(5, 10)
    response = {'run_id': str(uuid.uuid4()), 'sleep_time': sleep_time, 'start': datetime.now()}

    driver = get_remote_driver()
    driver.get("http://google.com")
    response['get_driver'] = datetime.now()
    sleep(sleep_time)
    assert "google" in driver.page_source
    driver.quit()
    response['end'] = datetime.now()
    return response


if __name__ == '__main__':
    results = Pool(2).map(throw_away_function, range(5))  # 2 process at same time.
    result_df = pd.DataFrame(results)
    result_df.to_csv('docker_selenium_test_results.csv', index=False)
    print(result_df)
    """
    run_id,sleep_time,start,get_driver,end
    d3ac00a8-4746-4bf9-8a2c-73c8d767b246,10,2021-02-28 00:33:48.554172,2021-02-28 00:33:51.642149,2021-02-28 00:34:01.767759
    3c9e73eb-8570-4347-aae3-40ccb517880d,7,2021-02-28 00:33:48.557115,2021-02-28 00:33:52.128206,2021-02-28 00:33:59.263834
    7bec7587-8901-47e6-a288-4da4ceaff6a5,9,2021-02-28 00:33:59.264057,2021-02-28 00:34:01.581005,2021-02-28 00:34:10.714194
    7c510c5c-f8cf-435b-ba3f-5f0d26661a51,7,2021-02-28 00:34:01.767972,2021-02-28 00:34:03.597832,2021-02-28 00:34:10.759991
    262d160e-b4ac-4a04-b29a-e9fe09c477e1,7,2021-02-28 00:34:10.714399,2021-02-28 00:34:12.669645,2021-02-28 00:34:19.792564
    """

Start standalone chrome command: docker run -d -p 4444:4444 selenium/standalone-chrome:4.0.0-beta-1-20210215

very nice :)