How to use _stop_agent method in yandex-tank

Best Python code snippet using yandex-tank

systems.py

Source:systems.py

...139    def install(self, params):140        if 'installer' in params:141            self.INSTALLER = params.installer142        self._update_system(params)143        self._stop_agent(params)144        response = self.s3.get_object(Bucket=params.bucket, Key=params.key)145        with open(self.INSTALLER, 'wb') as f:146            f.write(response['Body'].read())147        subprocess.check_call(148            ['chmod', '+x', './{0}'.format(self.INSTALLER)]149        )150        credentials = self.session.get_credentials()151        environment = os.environ.copy()152        environment['AWS_REGION'] = params.region153        environment['AWS_ACCESS_KEY_ID'] = credentials.access_key154        environment['AWS_SECRET_ACCESS_KEY'] = credentials.secret_key155        if credentials.token is not None:156            environment['AWS_SESSION_TOKEN'] = credentials.token157        subprocess.check_call(158            ['./{0}'.format(self.INSTALLER), 'auto'],159            env=environment160        )161    def uninstall(self, params):162        process = self._stop_agent(params)163        if process.returncode == 0:164            self._remove_agent(params)165    def _update_system(self, params):166        raise NotImplementedError('preinstall')167    def _remove_agent(self, params):168        raise NotImplementedError('remove_agent')169    def _stop_agent(self, params):170        process = subprocess.Popen(171            ['service', 'codedeploy-agent', 'stop'],172            stdout=subprocess.PIPE,173            stderr=subprocess.PIPE174        )175        (output, error) = process.communicate()176        if process.returncode != 0 and params.not_found_msg not in error:177            raise RuntimeError(178                'Failed to stop the AWS CodeDeploy Agent:\n{0}'.format(error)179            )180        return process181class Ubuntu(Linux):182    def _update_system(self, params):183        subprocess.check_call(['apt-get', '-y', 'update'])184        subprocess.check_call(['apt-get', '-y', 'install', 'ruby2.0'])185    def _remove_agent(self, params):186        subprocess.check_call(['dpkg', '-r', 'codedeploy-agent'])187    def _stop_agent(self, params):188        params.not_found_msg = 'codedeploy-agent: unrecognized service'189        return Linux._stop_agent(self, params)190class RHEL(Linux):191    def _update_system(self, params):192        subprocess.check_call(['yum', '-y', 'install', 'ruby'])193    def _remove_agent(self, params):194        subprocess.check_call(['yum', '-y', 'erase', 'codedeploy-agent'])195    def _stop_agent(self, params):196        params.not_found_msg = 'Redirecting to /bin/systemctl stop  codedeploy-agent.service'...

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