mirror of https://github.com/google/pebble
79 lines
2.3 KiB
Python
79 lines
2.3 KiB
Python
# Copyright 2024 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import absolute_import
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import collections
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import struct
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from datetime import datetime
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import pebble.pulse2.exceptions
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from .. import exceptions
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class Prompt(object):
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PORT_NUMBER = 0x3e20
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def __init__(self, link):
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self.socket = link.open_socket('reliable', self.PORT_NUMBER)
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def command_and_response(self, command_string, timeout=20):
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log = []
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self.socket.send(bytes(command_string))
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is_done = False
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while not is_done:
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try:
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response = PromptResponse.parse(
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self.socket.receive(timeout=timeout))
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if response.is_done_response:
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is_done = True
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elif response.is_message_response:
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log.append(response.message)
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except pebble.pulse2.exceptions.ReceiveQueueEmpty:
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raise exceptions.CommandTimedOut
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return log
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def close(self):
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self.socket.close()
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class PromptResponse(collections.namedtuple('PromptResponse',
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'response_type timestamp message')):
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DONE_RESPONSE = 101
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MESSAGE_RESPONSE = 102
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response_struct = struct.Struct('<BQ')
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@property
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def is_done_response(self):
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return self.response_type == self.DONE_RESPONSE
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@property
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def is_message_response(self):
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return self.response_type == self.MESSAGE_RESPONSE
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@classmethod
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def parse(cls, response):
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result = cls.response_struct.unpack(response[:cls.response_struct.size])
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response_type = result[0]
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timestamp = datetime.fromtimestamp(result[1] / 1000.0)
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message = response[cls.response_struct.size:]
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return cls(response_type, timestamp, message)
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