| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2020, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| import logging |
| import subprocess |
| import time |
| from abc import abstractmethod |
| from typing import Optional |
| |
| |
| class OtCliHandler: |
| """This abstract class defines interfaces for a OT CLI Handler.""" |
| |
| @abstractmethod |
| def readline(self) -> str: |
| """Method readline should return the next line read from OT CLI.""" |
| pass |
| |
| @abstractmethod |
| def writeline(self, s: str) -> None: |
| """Method writeline should write a line to the OT CLI. |
| |
| It should block until all characters are written to OT CLI. |
| """ |
| pass |
| |
| @abstractmethod |
| def wait(self, duration: float) -> None: |
| """Method wait should wait for a given duration. |
| |
| A normal implementation should just call `time.sleep(duration)`. This is intended for proceeding Virtual Time |
| Simulation instances. |
| """ |
| pass |
| |
| @abstractmethod |
| def close(self) -> None: |
| """Method close should close the OT CLI Handler.""" |
| pass |
| |
| |
| class Simulator: |
| """This abstract class defines interfaces for a Virtual Time Simulator.""" |
| |
| @abstractmethod |
| def go(self, duration: float): |
| """Proceed the simulator for a given duration (in seconds).""" |
| pass |
| |
| |
| class OtCliPopen(OtCliHandler): |
| """Connector for OT CLI process (a Popen instance).""" |
| |
| def __init__(self, proc: subprocess.Popen, nodeid: int, simulator: Simulator): |
| self.__otcli_proc = proc |
| self.__nodeid = nodeid |
| self.__simulator = simulator |
| |
| def __repr__(self): |
| return 'OTCli<%d>' % self.__nodeid |
| |
| def readline(self) -> str: |
| return self.__otcli_proc.stdout.readline().rstrip('\r\n') |
| |
| def writeline(self, s: str): |
| self.__otcli_proc.stdin.write(s + '\n') |
| self.__otcli_proc.stdin.flush() |
| |
| def wait(self, duration: float): |
| if self.__simulator is not None: |
| # Virtual time simulation |
| self.__simulator.go(duration) |
| else: |
| # Real time simulation |
| time.sleep(duration) |
| |
| def close(self): |
| self.__otcli_proc.stdin.close() |
| self.__otcli_proc.stdout.close() |
| self.__otcli_proc.wait() |
| |
| |
| class OtCliSim(OtCliPopen): |
| """Connector for OT CLI Simulation instances.""" |
| |
| def __init__(self, executable: str, nodeid: int, simulator: Simulator): |
| logging.info('%s: executable=%s', self.__class__.__name__, executable) |
| |
| proc = subprocess.Popen(args=[executable, str(nodeid)], |
| executable=executable, |
| stdin=subprocess.PIPE, |
| stdout=subprocess.PIPE, |
| encoding='utf-8', |
| bufsize=1024) |
| super().__init__(proc, nodeid, simulator) |
| |
| |
| class OtNcpSim(OtCliHandler): |
| """Connector for OT NCP Simulation instances.""" |
| |
| def __init__(self, executable: str, nodeid: int, simulator: Simulator): |
| logging.info('%s: executable=%s', self.__class__.__name__, executable) |
| |
| proc = subprocess.Popen(args=f'spinel-cli.py -p "{executable}" -n {nodeid} 2>&1', |
| stdin=subprocess.PIPE, |
| stdout=subprocess.PIPE, |
| encoding='utf-8', |
| bufsize=1024, |
| shell=True) |
| super().__init__(proc, nodeid, simulator) |
| |
| |
| class OtCliSerial(OtCliHandler): |
| """Connector for OT CLI SOC devices via Serial.""" |
| |
| def __init__(self, dev: str, baudrate: int): |
| self.__dev = dev |
| self.__baudrate = baudrate |
| |
| import serial |
| self.__serial = serial.Serial(self.__dev, self.__baudrate, timeout=0.1, exclusive=True) |
| self.__linebuffer = b'' |
| |
| def __repr__(self): |
| return self.__dev |
| |
| def readline(self) -> Optional[str]: |
| while self.__serial.is_open: |
| line = self.__serial.readline() |
| |
| if not line.endswith(b'\n'): |
| self.__linebuffer += line |
| else: |
| line = self.__linebuffer + line |
| self.__linebuffer = b'' |
| |
| return line.decode('utf-8', errors='ignore').rstrip('\r\n') |
| |
| return None |
| |
| def writeline(self, s: str): |
| self.__serial.write((s + '\n').encode('utf-8')) |
| |
| def wait(self, duration: float): |
| time.sleep(duration) |
| |
| def close(self): |
| self.__serial.close() |