py-playwright/ext_playwright.py at main · darwinOrg/py-playwright · GitHub

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import socket
import logging
from typing import Optional
from playwright.sync_api import BrowserType, Playwright, Browser
from chrome import find_chrome_path

logger = logging.getLogger(__name__)


class BrowserTypeNames:
    Chrome = "chrome"
    Firefox = "firefox"
    Webkit = "webkit"


class ExtPlaywrightOption:
    """Playwright 扩展选项"""

    def __init__(
        self,
        skip_install_browsers: bool = False,
        headless: bool = False,
        browser_type: str = BrowserTypeNames.Chrome,
        channel: str = "",
        driver_directory: str = "",
        browser_path: str = "",
        user_data_dir: str = "",
        remote_debugging_host: str = "",
        remote_debugging_port: int = 0
    ):
        self.skip_install_browsers = skip_install_browsers
        self.headless = headless
        self.browser_type = browser_type
        self.channel = channel
        self.driver_directory = driver_directory
        self.browser_path = browser_path
        self.user_data_dir = user_data_dir
        self.remote_debugging_host = remote_debugging_host
        self.remote_debugging_port = remote_debugging_port

    def get_browser_type(self, pw: Playwright) -> BrowserType:
        """获取浏览器类型

        Args:
            pw: Playwright 实例

        Returns:
            BrowserType 实例
        """
        if self.browser_type == BrowserTypeNames.Firefox:
            return pw.firefox
        elif self.browser_type == BrowserTypeNames.Webkit:
            return pw.webkit
        else:
            return pw.chromium

    def must_get_remote_debugging_port(self) -> int:
        """获取远程调试端口

        Returns:
            端口号
        """
        if self.remote_debugging_port > 0:
            return self.remote_debugging_port
        return 9222

    def must_get_browser_path(self) -> str:
        """获取浏览器路径

        Returns:
            浏览器可执行文件路径
        """
        if self.browser_path:
            return self.browser_path

        chrome_path = find_chrome_path()
        if not chrome_path:
            raise RuntimeError("Chrome browser not found")
        return chrome_path


def get_free_port() -> int:
    """获取一个空闲端口

    Returns:
        端口号
    """
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        s.bind(('', 0))
        s.listen(1)
        port = s.getsockname()[1]
    return port


def connect_over_cdp(pw: Playwright, ext_pw_opt: ExtPlaywrightOption) -> Browser:
    """通过 CDP 连接到浏览器

    Args:
        pw: Playwright 实例
        ext_pw_opt: 扩展选项

    Returns:
        Browser 实例
    """
    if not ext_pw_opt.remote_debugging_host:
        ext_pw_opt.remote_debugging_host = "localhost"

    cdp_url = f"http://{ext_pw_opt.remote_debugging_host}:{ext_pw_opt.must_get_remote_debugging_port()}"
    return pw.chromium.connect_over_cdp(cdp_url)