0dfec4d269
- remove context manager implementation - register a cleanup handler - send a 500 error if selenium throws an exception
130 lines
3.2 KiB
Python
130 lines
3.2 KiB
Python
import time
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from dataclasses import dataclass
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import argparse
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import atexit
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import undetected_chromedriver as uc
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from selenium.webdriver.support.ui import WebDriverWait
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from selenium.webdriver import ChromeOptions
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from flask import Flask, request
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@dataclass
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class ScraperConfig:
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wait_time: float
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headless: bool
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user_agent: str
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@dataclass
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class ServerConfig:
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host: str
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port: int
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class Scraper:
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def __init__(self, config: ScraperConfig):
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self.config = config
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self.driver = None
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self._setup_driver()
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def _setup_driver(self):
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chrome_options = ChromeOptions()
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chrome_options.add_argument(f"--user-agent={self.config.user_agent}")
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self.driver = uc.Chrome(
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headless=self.config.headless,
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options=chrome_options,
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use_subprocess=False
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)
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def cleanup(self):
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if self.driver:
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try:
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self.driver.quit()
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except Exception as e:
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print(f"Error during cleanup: {e}")
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finally:
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self.driver = None
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def render_page(self, url):
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self.driver.get(url)
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WebDriverWait(self.driver, timeout=self.config.wait_time).until(
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lambda driver: driver.execute_script("return document.readyState") == "complete"
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)
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time.sleep(self.config.wait_time)
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return self.driver.page_source
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(prog="ChromeDriver HTTP Proxy",
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description="Simple HTTP proxy that renders pages with undetected-chromedriver and returns the HTML",
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usage="")
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parser.add_argument(
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"--port",
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help="Port the proxy runs on.",
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required=False,
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type=int,
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default=32323
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)
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parser.add_argument(
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"--host",
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help="Host the proxy to runs on.",
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required=False,
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type=str,
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default="0.0.0.0"
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)
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parser.add_argument(
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"--wait",
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help="Seconds to wait before returning content.",
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required=False,
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type=float,
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default=10
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)
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parser.add_argument(
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"--headless",
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help="Whether or not to run Chrome headless.",
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required=False,
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type=bool,
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default=True
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)
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parser.add_argument(
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"--user-agent",
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help="Chrome user agent. Changing with the current ChromeDriver version recommended.",
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required=False,
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type=str,
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default="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36"
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)
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args = parser.parse_args()
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server_config = ServerConfig(host=args.host, port=args.port)
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scraper_config = ScraperConfig(wait_time=args.wait, headless=args.headless, user_agent=args.user_agent)
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scraper = Scraper(scraper_config)
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atexit.register(scraper.cleanup)
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# run the server
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app = Flask(__name__)
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@app.route("/")
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def proxy_route():
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url = request.args.get("url")
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try:
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html = scraper.render_page(url)
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return html
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except Exception as e:
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print(f"Error: {e}", 500)
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app.run(host=server_config.host, port=server_config.port)
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