Appium [求助] appium 多设备同时运行获取 webview handle 报错:An unknown server-side error occurred while processing the command. Original error: disconnected: unable to connect to renderer

tobetree · 2019年12月13日 · 最后由 胡适 回复于 2020年01月16日 · 1 次阅读

启动 appium

appium -a 127.0.0.1 -p 4725 -bp 4726 -U d3f9cc74 --no-reset at Fri Dec 13 15:51:50 2019
appium -a 127.0.0.1 -p 4723 -bp 4724 -U 399f7063 --no-reset at Fri Dec 13 15:51:50 2019

desired_caps

{'platformName': 'android', 'noReset': True, 'appPackage': 'com.tencent.mm', 'appActivity': '.ui.LauncherUI', 'automationName': 'UIAutomator2', 'chromedriverExecutableDir': '/Users/xxx/dev/chromedriver/2.39', 'chromeOptions': {'androidProcess': 'com.tencent.mm:appbrand0'}, 'deviceName': '399f7063', 'udid': '399f7063', 'workDir': '399f7063', 'unicodeKeyboard': False, 'resetKeyboard': False, 'port': 4723, 'systemPort': 8200}
{'platformName': 'android', 'noReset': True, 'appPackage': 'com.tencent.mm', 'appActivity': '.ui.LauncherUI', 'automationName': 'UIAutomator2', 'chromedriverExecutableDir': '/Users/xxx/dev/chromedriver/2.39', 'chromeOptions': {'androidProcess': 'com.tencent.mm:appbrand0'}, 'deviceName': 'd3f9cc74', 'udid': 'd3f9cc74', 'workDir': 'd3f9cc74', 'unicodeKeyboard': False, 'resetKeyboard': False, 'port': 4725, 'systemPort': 8201}

上面是我的启动过程,由于在微信小程序里面需要切换到不同的页面,我的处理方式是

handles = self._driver.window_handles
for window in handles:
    self._driver.switch_to.window(window)
    title = self._driver.title
    if ':VISIBLE' in title:
        logger.info(f"切换到窗口:{title}")
        return True
return False

这种方式在单台设备运行的时候都没有问题,但是在多台设备同时运行的时候,运行一段时间之后再获取页面标题的时候就直接报错,报错日志如下:

self._driver.switch_to_active_wxapp_window()
common/base_driver.py:421: in switch_to_active_wxapp_window
    title = self._driver.title
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py:342: in title
    resp = self.execute(Command.GET_TITLE)
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py:321: in execute
    self.error_handler.check_response(response)
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/appium/webdriver/errorhandler.py:29: in check_response
    raise wde
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/appium/webdriver/errorhandler.py:24: in check_response
    super(MobileErrorHandler, self).check_response(response)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <appium.webdriver.errorhandler.MobileErrorHandler object at 0x106954d30>
response = {'status': 500, 'value': '{"value":{"error":"unknown error","message":"An unknown server-side error occurred while pro...ocal/lib/node_modules/appium/node_modules/appium-base-driver/lib/protocol/protocol.js:443:25)\\n    at <anonymous>"}}'}

    def check_response(self, response):
        """
        Checks that a JSON response from the WebDriver does not have an error.

        :Args:
         - response - The JSON response from the WebDriver server as a dictionary
           object.

        :Raises: If the response contains an error message.
        """
        status = response.get('status', None)
        if status is None or status == ErrorCode.SUCCESS:
            return
        value = None
        message = response.get("message", "")
        screen = response.get("screen", "")
        stacktrace = None
        if isinstance(status, int):
            value_json = response.get('value', None)
            if value_json and isinstance(value_json, basestring):
                import json
                try:
                    value = json.loads(value_json)
                    if len(value.keys()) == 1:
                        value = value['value']
                    status = value.get('error', None)
                    if status is None:
                        status = value["status"]
                        message = value["value"]
                        if not isinstance(message, basestring):
                            value = message
                            message = message.get('message')
                    else:
                        message = value.get('message', None)
                except ValueError:
                    pass

        exception_class = ErrorInResponseException
        if status in ErrorCode.NO_SUCH_ELEMENT:
            exception_class = NoSuchElementException
        elif status in ErrorCode.NO_SUCH_FRAME:
            exception_class = NoSuchFrameException
        elif status in ErrorCode.NO_SUCH_WINDOW:
            exception_class = NoSuchWindowException
        elif status in ErrorCode.STALE_ELEMENT_REFERENCE:
            exception_class = StaleElementReferenceException
        elif status in ErrorCode.ELEMENT_NOT_VISIBLE:
            exception_class = ElementNotVisibleException
        elif status in ErrorCode.INVALID_ELEMENT_STATE:
            exception_class = InvalidElementStateException
        elif status in ErrorCode.INVALID_SELECTOR \
                or status in ErrorCode.INVALID_XPATH_SELECTOR \
                or status in ErrorCode.INVALID_XPATH_SELECTOR_RETURN_TYPER:
            exception_class = InvalidSelectorException
        elif status in ErrorCode.ELEMENT_IS_NOT_SELECTABLE:
            exception_class = ElementNotSelectableException
        elif status in ErrorCode.ELEMENT_NOT_INTERACTABLE:
            exception_class = ElementNotInteractableException
        elif status in ErrorCode.INVALID_COOKIE_DOMAIN:
            exception_class = InvalidCookieDomainException
        elif status in ErrorCode.UNABLE_TO_SET_COOKIE:
            exception_class = UnableToSetCookieException
        elif status in ErrorCode.TIMEOUT:
            exception_class = TimeoutException
        elif status in ErrorCode.SCRIPT_TIMEOUT:
            exception_class = TimeoutException
        elif status in ErrorCode.UNKNOWN_ERROR:
            exception_class = WebDriverException
        elif status in ErrorCode.UNEXPECTED_ALERT_OPEN:
            exception_class = UnexpectedAlertPresentException
        elif status in ErrorCode.NO_ALERT_OPEN:
            exception_class = NoAlertPresentException
        elif status in ErrorCode.IME_NOT_AVAILABLE:
            exception_class = ImeNotAvailableException
        elif status in ErrorCode.IME_ENGINE_ACTIVATION_FAILED:
            exception_class = ImeActivationFailedException
        elif status in ErrorCode.MOVE_TARGET_OUT_OF_BOUNDS:
            exception_class = MoveTargetOutOfBoundsException
        elif status in ErrorCode.JAVASCRIPT_ERROR:
            exception_class = JavascriptException
        elif status in ErrorCode.SESSION_NOT_CREATED:
            exception_class = SessionNotCreatedException
        elif status in ErrorCode.INVALID_ARGUMENT:
            exception_class = InvalidArgumentException
        elif status in ErrorCode.NO_SUCH_COOKIE:
            exception_class = NoSuchCookieException
        elif status in ErrorCode.UNABLE_TO_CAPTURE_SCREEN:
            exception_class = ScreenshotException
        elif status in ErrorCode.ELEMENT_CLICK_INTERCEPTED:
            exception_class = ElementClickInterceptedException
        elif status in ErrorCode.INSECURE_CERTIFICATE:
            exception_class = InsecureCertificateException
        elif status in ErrorCode.INVALID_COORDINATES:
            exception_class = InvalidCoordinatesException
        elif status in ErrorCode.INVALID_SESSION_ID:
            exception_class = InvalidSessionIdException
        elif status in ErrorCode.UNKNOWN_METHOD:
            exception_class = UnknownMethodException
        else:
            exception_class = WebDriverException
        if value == '' or value is None:
            value = response['value']
        if isinstance(value, basestring):
            if exception_class == ErrorInResponseException:
                raise exception_class(response, value)
            raise exception_class(value)
        if message == "" and 'message' in value:
            message = value['message']

        screen = None
        if 'screen' in value:
            screen = value['screen']

        stacktrace = None
        if 'stackTrace' in value and value['stackTrace']:
            stacktrace = []
            try:
                for frame in value['stackTrace']:
                    line = self._value_or_default(frame, 'lineNumber', '')
                    file = self._value_or_default(frame, 'fileName', '<anonymous>')
                    if line:
                        file = "%s:%s" % (file, line)
                    meth = self._value_or_default(frame, 'methodName', '<anonymous>')
                    if 'className' in frame:
                        meth = "%s.%s" % (frame['className'], meth)
                    msg = "    at %s (%s)"
                    msg = msg % (meth, file)
                    stacktrace.append(msg)
            except TypeError:
                pass
        if exception_class == ErrorInResponseException:
            raise exception_class(response, message)
        elif exception_class == UnexpectedAlertPresentException:
            alert_text = None
            if 'data' in value:
                alert_text = value['data'].get('text')
            elif 'alert' in value:
                alert_text = value['alert'].get('text')
            raise exception_class(message, screen, stacktrace, alert_text)
>       raise exception_class(message, screen, stacktrace)
E       selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: disconnected: unable to connect to renderer
E         (Session info: chrome=66.0.3359.126)
E         (Driver info: chromedriver=2.39.562713 (dd642283e958a93ebf6891600db055f1f1b4f3b2),platform=Mac OS X 10.15.1 x86_64)

../../../.virtualenvs/auto-test/lib/python3.7/site-packages/selenium/webdriver/remote/errorhandler.py:242: WebDriverException

有谁遇到过这种问题吗?求助。

共收到 10 条回复 时间 点赞

两个手机 webview 版本不同? 给 chromedriver 的 options 启动参数分配不同端口

YueChen 回复

感谢回复。我的两个手机的 webview 版本是一样的。给 chromedriver 的 options 启动参数分配不同端口这句话有点没明白,这个要分配的端口和 systemport 是一样的吗?'chromeOptions': {'androidProcess': 'com.tencent.mm:appbrand0','port':'some_port'}这样吗

我试了一下,在 appium 启动的时候指定了 chromedriver 的端口,但是appium -a 127.0.0.1 -p 4725 -bp 4726 --chromedriver-port 9516 -U d3f9cc74 --no-reset --session-override

tobetree · #4 · 2019年12月17日 Author
仅楼主可见

请问你那里是可以吗?我这里一开始也是可以的,不过我的用例需要一直切换 webview,大概在切换到第 5 个左右的时候获取页面标题的时候就会报这个错误,前几个页面是可以正常获取的

楼主解决了吗,遇到了同样的问题😭

胡适 回复

没有。。。。如果你有好的办法可以一起沟通下

capacities["systemPort"] = device["systemPort"]
我这边传了不同的 systemPort,还是会出现这种问题,你那边试试
Google 了下都是这样回复的,但是我这边没用

胡适 回复

没有,我在 appium 启动的时候指定了 chromedriver 的端口还是会报那个错误,我调试的时候看到 adb-port 都是 5037,命令应该是一个个串行发送到不同的设备上的不知道是不是这个原因。chromedriver/chromedriver_2.40 --url-base=wd/hub --port=9516 --adb-port=5037 --verbose。也试过在 desired_caps 中增加 webview 超时时间也不好使autoWebviewTimeout: 30000

前几天在 GitHub 上看了回复,他们说不是 appium 的问题,是 chromedriver 有 bug,现在想到的方案就是做隔离,可以使用 appium docker,有兴趣你可以试试

胡适 微信小程序自动化多设备分布式运行方案 中提及了此贴 05月08日 08:52
需要 登录 后方可回复, 如果你还没有账号请点击这里 注册