134 lines
3.7 KiB
Python
134 lines
3.7 KiB
Python
import asyncio
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from loguru import logger
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import aioconsole
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class Shell:
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def __init__(self, config: dict) -> None:
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logger.level('MINECRAFT', no=20, color='<white>')
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self.shell_start_cmd: str = config['shell']['start_cmd']
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self.shell_stop_cmd: str = config['shell']['stop_cmd']
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self.shell_read_encoding: str = config['shell']['read_encoding']
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self.shell_write_encoding: str = config['shell']['write_encoding']
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self.proc = None
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self.run_flag: asyncio.Event = asyncio.Event()
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self.run_flag.clear()
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self.line_queue = asyncio.Queue()
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self.line_queue_get_lock = asyncio.Lock()
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self.line_handler: list = []
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self.add_line_handler(self._game_stop_handler)
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def get_tasks(self):
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return asyncio.gather(
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self.start_game(),
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self._receiver(),
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self._console_input(),
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self._call_line_handler()
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)
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def add_line_handler(self, func) -> None:
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self.line_handler.append(func)
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async def start_game(self) -> None:
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self.proc = await asyncio.create_subprocess_shell(
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self.shell_start_cmd + " && echo PRISM CLOSE SINGAL",
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stdout=asyncio.subprocess.PIPE,
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stdin=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE
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)
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self.run_flag.set()
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logger.info('Game Start..')
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def stop_game(self) -> None:
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self.send_game_cmd('stop')
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def kill_game(self) -> None:
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try:
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self.proc.kill()
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except ProcessLookupError:
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pass
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async def _receiver(self) -> None:
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while True:
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await self.run_flag.wait()
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data = await self.proc.stdout.readline()
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line = data.decode(self.shell_read_encoding).rstrip()
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# Display the line.
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if line.strip() != '':
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logger.log('MINECRAFT', line)
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# Put the line into queue.
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await self.line_queue.put(line)
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def send_game_cmd(self, cmd: str) -> None:
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if self.run_flag.is_set():
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self.proc.stdin.write(
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(cmd + '\n').encode(self.shell_write_encoding))
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async def _console_input(self) -> None:
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while True:
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cmd = await aioconsole.ainput()
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if self.run_flag.is_set():
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self.send_game_cmd(cmd)
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else:
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await self.issue_prism_cmd(cmd)
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async def _call_line_handler(self) -> None:
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while True:
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await self.run_flag.wait()
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await asyncio.sleep(0)
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async with self.line_queue_get_lock:
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try:
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line = self.line_queue.get_nowait()
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except asyncio.QueueEmpty:
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continue
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for func in self.line_handler:
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func(line)
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async def temp_get_lines(self, num: int = 1) -> list:
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'''
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Get and put back lines to the line_queue.
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Before call this method, make sure the line_queue's get method is locked.
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Example:
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async with handler.queue_get_lock:
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ret_list = await handler.temp_get_lines()
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'''
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line_list = []
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for i in range(num):
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try:
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line_list.append(self.line_queue.get_nowait())
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except asyncio.QueueEmpty:
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pass
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# Put back to queue.
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for line in line_list:
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await self.line_queue.put(line)
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return line_list
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def _game_stop_handler(self, line: str):
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if line.find('PRISM CLOSE SINGAL') != -1:
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self.kill_game()
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self.run_flag.clear()
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logger.info('Server closed. Type start to start the server.')
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