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How to use _is_timed_out method in tempest

Best Python code snippet using tempest_python

ssh.py

Source:ssh.py

...44        ssh = paramiko.SSHClient()45        ssh.set_missing_host_key_policy(46            paramiko.AutoAddPolicy())47        _start_time = time.time()48        while not self._is_timed_out(_start_time):49            try:50                ssh.connect(self.host, username=self.username,51                            password=self.password,52                            look_for_keys=self.look_for_keys,53                            key_filename=self.key_filename,54                            timeout=self.channel_timeout, pkey=self.pkey)55                _timeout = False56                break57            except (socket.error,58                    paramiko.AuthenticationException,59                    paramiko.SSHException):60                time.sleep(bsleep)61                bsleep *= backoff62                continue63        if _timeout:64            raise exceptions.SSHTimeout(host=self.host,65                                        user=self.username,66                                        password=self.password)67        return ssh68    def _is_timed_out(self, start_time):69        return (time.time() - self.timeout) > start_time70    def connect_until_closed(self):71        """Connect to the server and wait until connection is lost."""72        try:73            ssh = self._get_ssh_connection()74            _transport = ssh.get_transport()75            _start_time = time.time()76            _timed_out = self._is_timed_out(_start_time)77            while _transport.is_active() and not _timed_out:78                time.sleep(5)79                _timed_out = self._is_timed_out(_start_time)80            ssh.close()81        except (EOFError, paramiko.AuthenticationException, socket.error):82            return83    def exec_command(self, cmd):84        """85        Execute the specified command on the server.86        Note that this method is reading whole command outputs to memory, thus87        shouldn't be used for large outputs.88        :returns: data read from standard output of the command.89        :raises: SSHExecCommandFailed if command returns nonzero90                 status. The exception contains command status stderr content.91        """92        ssh = self._get_ssh_connection()93        transport = ssh.get_transport()94        channel = transport.open_session()95        channel.fileno()  # Register event pipe96        channel.exec_command(cmd)97        channel.shutdown_write()98        out_data = []99        err_data = []100        poll = select.poll()101        poll.register(channel, select.POLLIN)102        start_time = time.time()103        while True:104            ready = poll.poll(self.channel_timeout)105            if not any(ready):106                if not self._is_timed_out(start_time):107                    continue108                raise exceptions.TimeoutException(109                    "Command: '{0}' executed on host '{1}'.".format(110                        cmd, self.host))111            if not ready[0]:        # If there is nothing to read.112                continue113            out_chunk = err_chunk = None114            if channel.recv_ready():115                out_chunk = channel.recv(self.buf_size)116                out_data += out_chunk,117            if channel.recv_stderr_ready():118                err_chunk = channel.recv_stderr(self.buf_size)119                err_data += err_chunk,120            if channel.closed and not err_chunk and not out_chunk:...

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