class Server:
def __init__(self):
self.console_input_thread = None
self.process = None # the process for the server
self.server_status = ServerStatus.STOPPED
self.flag_interrupt = False # ctrl-c flag
self.flag_rcon_startup = False # set to True after server startup. used to start the rcon server
self.starting_server_lock = Lock(
) # to prevent multiple start_server() call
# will be assigned in reload_config()
self.encoding_method = None
self.decoding_method = None
self.logger = logger.Logger(self, constant.NAME_SHORT)
self.logger.set_file(constant.LOGGING_FILE)
self.language_manager = LanguageManager(self, constant.LANGUAGE_FOLDER)
self.config = config.Config(self, constant.CONFIG_FILE)
self.rcon_manager = RconManager(self)
self.parser_manager = ParserManager(self)
self.load_config()
self.reactors = self.load_reactor(constant.REACTOR_FOLDER)
self.server_interface = ServerInterface(self)
self.command_manager = CommandManager(self)
self.plugin_manager = PluginManager(self, constant.PLUGIN_FOLDER)
self.load_plugins()
self.permission_manager = PermissionManager(self,
constant.PERMISSION_FILE)
self.update_helper = UpdateHelper(self)
self.update_helper.check_update()
# Translate info strings
def translate(self, text, *args):
result = self.language_manager.translate(text).strip()
if len(args) > 0:
result = result.format(*args)
return result
def t(self, text, *args):
return self.translate(text, *args)
# Loaders
def load_config(self):
self.config.read_config()
self.language_manager.load_languages()
self.language_manager.set_language(self.config['language'])
self.logger.info(
self.t('server.load_config.language_set', self.config['language']))
self.logger.set_level(
logging.DEBUG if self.config['debug_mode'] else logging.INFO)
if self.config['debug_mode']:
self.logger.info(self.t('server.load_config.debug_mode_on'))
self.parser_manager.load_parser(constant.PARSER_FOLDER,
self.config['parser'])
self.logger.info(
self.t('server.load_config.parser_set', self.config['parser']))
self.encoding_method = self.config['encoding'] if self.config[
'encoding'] is not None else sys.getdefaultencoding()
self.decoding_method = self.config['decoding'] if self.config[
'decoding'] is not None else locale.getpreferredencoding()
self.logger.info(
self.t('server.load_config.encoding_decoding_set',
self.encoding_method, self.decoding_method))
self.connect_rcon()
def load_plugins(self):
msg = tool.clean_minecraft_color_code(
self.plugin_manager.refresh_all_plugins())
self.logger.info(msg)
def load_reactor(self, folder):
reactors = []
for file in tool.list_file(folder, '.py'):
module = tool.load_source(file)
if hasattr(module, 'get_reactor') and callable(module.get_reactor):
reactors.append(module.get_reactor(self))
return reactors
# MCDR server
def is_server_running(self):
return self.process is not None
def is_server_startup(self):
return self.flag_rcon_startup
def set_server_status(self, status):
self.server_status = status
self.logger.debug('Server status has set to "{}"'.format(status))
# return True if the server process has started successfully
# return False if the server is already running or start_server has been called by other
def start_server(self) -> bool:
acquired = self.starting_server_lock.acquire(blocking=False)
if not acquired:
return False
try:
if self.is_server_running():
self.logger.warning(self.t('server.start_server.start_twice'))
return False
self.logger.info(self.t('server.start_server.starting'))
try:
print(self.config['start_command'])
self.process = Popen(self.config['start_command'],
cwd=self.config['working_directory'],
stdin=PIPE,
stdout=PIPE,
stderr=STDOUT,
shell=True)
except:
self.logger.error(self.t('server.start_server.start_fail'))
self.logger.error(traceback.format_exc())
return False
else:
self.set_server_status(ServerStatus.RUNNING)
self.logger.info(
self.t('server.start_server.pid_info', self.process.pid))
return True
finally:
self.starting_server_lock.release()
def start(self):
if self.start_server():
if not self.config['disable_console_thread']:
if self.console_input_thread is None or not self.console_input_thread.is_alive(
):
self.logger.info('Console thread starting')
self.console_input_thread = tool.start_thread(
self.console_input, (), 'Console')
else:
self.logger.info('Console thread disabled')
self.run()
def stop(self,
forced=False,
new_server_status=ServerStatus.STOPPING_BY_ITSELF):
if not self.is_server_running():
self.logger.warning(self.t('server.stop.stop_twice'))
self.set_server_status(new_server_status)
if not forced:
try:
self.send(self.parser_manager.get_stop_command())
except:
self.logger.error(self.t('server.stop.stop_fail'))
forced = True
self.rcon_manager.disconnect()
if forced:
self.process.kill()
self.logger.info(self.t('server.stop.process_killed'))
def send(self, text, ending='\n'):
if type(text) is str:
text = (text + ending).encode(self.encoding_method)
if self.is_server_running():
self.process.stdin.write(text)
self.process.stdin.flush()
else:
self.logger.warning(self.t('server.send.send_when_stoped'))
def receive(self):
while True:
try:
text = next(iter(self.process.stdout))
except StopIteration: # server process has stopped
for i in range(100):
if self.process.poll() is not None:
break
time.sleep(0.1)
if i % 10 == 0:
self.logger.info(self.t('server.receive.wait_stop'))
else:
self.process.kill()
time.sleep(1)
if self.server_status is ServerStatus.RUNNING:
self.set_server_status(ServerStatus.STOPPING_BY_ITSELF)
return None
else:
try:
text = text.decode(self.decoding_method)
except:
self.logger.error(
self.t('server.receive.decode_fail', text))
raise
return text.rstrip().lstrip()
def on_server_stop(self):
return_code = self.process.poll()
self.logger.info(
self.t('server.on_server_stop.show_stopcode', return_code))
self.process = None
self.flag_rcon_startup = False
if self.server_status == ServerStatus.STOPPING_BY_ITSELF:
self.logger.info(self.t('server.on_server_stop.stop_by_itself'))
self.set_server_status(ServerStatus.STOPPED)
self.plugin_manager.call('on_server_stop',
(self.server_interface, return_code))
def tick(self):
text = self.receive()
if text is None: # server process has been terminated
self.on_server_stop()
return
try:
text = self.parser_manager.get_parser().pre_parse_server_stdout(
text)
except:
self.logger.warning(self.t('server.tick.pre_parse_fail'))
print('[Server] {}'.format(text))
try:
parsed_result = self.parser_manager.get_parser(
).parse_server_stdout(text)
except:
self.logger.debug(
'Fail to parse text "{}" from stdout of the server, using raw parser'
.format(text))
for line in traceback.format_exc().splitlines():
self.logger.debug(' {}'.format(line))
parsed_result = self.parser_manager.get_parser(
).parse_server_stdout_raw(text)
else:
self.logger.debug('Parsed text from server stdin:')
for line in parsed_result.format_text().splitlines():
self.logger.debug(' {}'.format(line))
self.react(parsed_result)
def run(self):
# main loop
while self.server_status != ServerStatus.STOPPED:
try:
if self.is_server_running():
self.tick()
else:
time.sleep(0.01)
except KeyboardInterrupt:
self.flag_interrupt = True
except:
if not self.flag_interrupt:
self.logger.error(self.t('server.run.error'))
self.logger.error(traceback.format_exc())
self.stop()
break
# stop MCDR
try:
if self.flag_interrupt:
self.logger.info(self.t('server.run.user_interrupted'))
else:
self.logger.info(self.t('server.run.server_stop'))
self.plugin_manager.call('on_mcdr_stop', (self.server_interface, ),
wait=True)
self.logger.info(self.t('server.run.bye'))
except:
self.logger.error(self.t('server.run.stop_error'))
self.logger.error(traceback.format_exc())
# the thread for processing console input
def console_input(self):
while True:
try:
text = input()
try:
parsed_result = self.parser_manager.get_parser(
).parse_console_command(text)
except:
self.logger.error(
self.t('server.console_input.parse_fail', text))
self.logger.error(traceback.format_exc())
else:
self.logger.debug('Parsed text from console input:')
for line in str(parsed_result).splitlines():
self.logger.debug(' {}'.format(line))
self.react(parsed_result)
if parsed_result.content == self.parser_manager.get_stop_command(
):
self.rcon_manager.disconnect()
except (KeyboardInterrupt, EOFError, SystemExit, IOError) as e:
self.logger.debug(
'Exception {} {} caught in console_input()'.format(
type(e), e))
self.flag_interrupt = True
self.stop(forced=True)
break
except:
self.logger.error(self.t('server.console_input.error'))
self.logger.error(traceback.format_exc())
# react to a parsed info
def react(self, info):
for reactor in self.reactors:
try:
reactor.react(info)
except:
self.logger.error(
self.t('server.react.error',
type(reactor).__name__))
self.logger.error(traceback.format_exc())
def connect_rcon(self):
self.rcon_manager.disconnect()
if self.config['enable_rcon'] and self.is_server_startup():
self.rcon_manager.connect(self.config['rcon_address'],
self.config['rcon_port'],
self.config['rcon_password'])
class Server:
def __init__(self, old_process=None):
self.console_input_thread = None
self.info_reactor_thread = None
self.info_queue = queue.Queue(maxsize=constant.MAX_INFO_QUEUE_SIZE)
self.process = old_process # the process for the server
self.server_status = ServerStatus.STOPPED
self.flag_interrupt = False # ctrl-c flag
self.flag_rcon_startup = False # set to True after server startup. used to start the rcon server
self.flag_exit = False # MCDR exit flag
self.starting_server_lock = Lock() # to prevent multiple start_server() call
# will be assigned in reload_config()
self.encoding_method = None
self.decoding_method = None
self.logger = logger.Logger(self, constant.NAME_SHORT)
self.logger.set_file(constant.LOGGING_FILE)
self.server_logger = logger.ServerLogger('Server')
self.language_manager = LanguageManager(self, constant.LANGUAGE_FOLDER)
self.config = config.Config(self, constant.CONFIG_FILE)
self.rcon_manager = RconManager(self)
self.parser_manager = ParserManager(self)
self.load_config()
self.reactors = self.load_reactor(constant.REACTOR_FOLDER)
self.server_interface = ServerInterface(self)
self.command_manager = CommandManager(self)
self.plugin_manager = PluginManager(self, constant.PLUGIN_FOLDER)
self.load_plugins()
self.permission_manager = PermissionManager(self, constant.PERMISSION_FILE)
self.update_helper = UpdateHelper(self)
self.update_helper.check_update_start()
# Translate info strings
def translate(self, text, *args):
result = self.language_manager.translate(text).strip()
if len(args) > 0:
result = result.format(*args)
return result
def t(self, text, *args):
return self.translate(text, *args)
# Loaders
def load_config(self):
self.config.read_config()
self.language_manager.load_languages()
self.language_manager.set_language(self.config['language'])
self.logger.info(self.t('server.load_config.language_set', self.config['language']))
self.logger.set_level(logging.DEBUG if self.config['debug_mode'] else logging.INFO)
if self.config['debug_mode']:
self.logger.info(self.t('server.load_config.debug_mode_on'))
self.parser_manager.load_parser(constant.PARSER_FOLDER, self.config['parser'])
self.logger.info(self.t('server.load_config.parser_set', self.config['parser']))
self.encoding_method = self.config['encoding'] if self.config['encoding'] is not None else sys.getdefaultencoding()
self.decoding_method = self.config['decoding'] if self.config['decoding'] is not None else locale.getpreferredencoding()
self.logger.info(self.t('server.load_config.encoding_decoding_set', self.encoding_method, self.decoding_method))
self.connect_rcon()
def load_plugins(self):
self.logger.info(self.plugin_manager.refresh_all_plugins())
def load_reactor(self, folder):
reactors = []
for file in tool.list_file(folder, '.py'):
module = tool.load_source(file)
if callable(getattr(module, 'get_reactor', None)):
reactors.append(module.get_reactor(self))
return reactors
# MCDR server
def is_server_running(self):
return self.process is not None
def is_server_startup(self):
return self.flag_rcon_startup
def set_server_status(self, status):
self.server_status = status
self.logger.debug('Server status has set to "{}"'.format(status))
def start_server(self) -> bool:
"""
try to start the server process
return True if the server process has started successfully
return False if the server is already running or start_server has been called by other
:return: a bool as above
"""
acquired = self.starting_server_lock.acquire(blocking=False)
if not acquired:
return False
try:
if self.is_server_running():
self.logger.warning(self.t('server.start_server.start_twice'))
return False
try:
start_command = self.config['start_command']
self.logger.info(self.t('server.start_server.starting', start_command))
self.process = Popen(start_command, cwd=self.config['working_directory'], stdin=PIPE, stdout=PIPE, stderr=STDOUT, shell=True)
except:
self.logger.exception(self.t('server.start_server.start_fail'))
return False
else:
self.set_server_status(ServerStatus.RUNNING)
self.logger.info(self.t('server.start_server.pid_info', self.process.pid))
return True
finally:
self.starting_server_lock.release()
def start(self):
"""
Yry to start the server. if succeeded the console thread will start and MCDR will start ticking
:raise: Raise ServerStartError if the server is already running or start_server has been called by other
"""
def start_thread(target, args, name):
self.logger.debug('{} thread starting'.format(name))
thread = tool.start_thread(target, args, name)
return thread
if not self.start_server():
raise ServerStartError()
if not self.config['disable_console_thread']:
self.console_input_thread = start_thread(self.console_input, (), 'Console')
else:
self.logger.info('Console thread disabled')
self.info_reactor_thread = start_thread(self.info_react, (), 'InfoReactor')
self.run()
return self.process
def stop(self, forced=False, new_server_status=ServerStatus.STOPPING_BY_ITSELF):
"""
stop the server
:param forced: an optional bool. If it's False (default) MCDR will stop the server by sending the STOP_COMMAND from the
current parser. If it's True MCDR will just kill the server process
:param new_server_status: an optional ServerStatus object, the new server status MCDR will be set to
default is STOPPING_BY_ITSELF, which will cause MCDR to exit after server has stopped
set it to STOPPING_BY_PLUGIN to prevent MCDR exiting
"""
self.set_server_status(new_server_status)
if not self.is_server_running():
self.logger.warning(self.t('server.stop.stop_twice'))
else:
if not forced:
try:
self.send(self.parser_manager.get_stop_command())
except:
self.logger.error(self.t('server.stop.stop_fail'))
forced = True
if forced:
self.process.kill()
self.logger.info(self.t('server.stop.process_killed'))
def send(self, text, ending='\n', encoding=None):
"""
Send a text to server's stdin if the server is running
:param text: A str or a bytes you want to send. if text is a str then it will attach the ending parameter to its
back
:param str ending: The suffix of a command with a default value \n
:param str encoding: The encoding method for the text. If it's not given used the method in config
"""
if encoding is None:
encoding = self.encoding_method
if type(text) is str:
text = (text + ending).encode(encoding)
if self.is_server_running():
self.process.stdin.write(text)
self.process.stdin.flush()
else:
self.logger.warning(self.t('server.send.send_when_stopped'))
def receive(self):
"""
try to receive a str from server's stdout. This will block the thread
if server has stopped it will wait up to 10s for the server process to exit and then set the server status
to STOPPING_BY_ITSELF if the old server status is RUNNING
:rtype: str or None
"""
while True:
try:
text = next(iter(self.process.stdout))
except StopIteration: # server process has stopped
for i in range(100):
if self.process.poll() is not None:
break
time.sleep(0.1)
if i % 10 == 0:
self.logger.info(self.t('server.receive.wait_stop'))
else:
self.process.kill()
time.sleep(1)
if self.server_status is ServerStatus.RUNNING:
self.set_server_status(ServerStatus.STOPPING_BY_ITSELF)
return None
else:
try:
text = text.decode(self.decoding_method)
except:
self.logger.error(self.t('server.receive.decode_fail', text))
raise
return text.rstrip().lstrip()
def on_server_stop(self):
return_code = self.process.poll()
self.logger.info(self.t('server.on_server_stop.show_stopcode', return_code))
self.process = None
self.flag_rcon_startup = False
if self.server_status == ServerStatus.STOPPING_BY_ITSELF:
self.logger.info(self.t('server.on_server_stop.stop_by_itself'))
self.set_server_status(ServerStatus.STOPPED)
self.plugin_manager.call('on_server_stop', (self.server_interface, return_code))
def tick(self):
"""
ticking MCDR:
try to receive a new line from server's stdout and parse / display / process the text
"""
text = self.receive()
if text is None: # server process has been terminated
self.on_server_stop()
return
try:
text = self.parser_manager.get_parser().pre_parse_server_stdout(text)
except:
self.logger.warning(self.t('server.tick.pre_parse_fail'))
self.server_logger.info(text)
try:
parsed_result = self.parser_manager.get_parser().parse_server_stdout(text)
except:
self.logger.debug('Fail to parse text "{}" from stdout of the server, using raw parser'.format(text))
for line in traceback.format_exc().splitlines():
self.logger.debug(' {}'.format(line))
parsed_result = self.parser_manager.get_parser().parse_server_stdout_raw(text)
else:
self.logger.debug('Parsed text from server stdin:')
for line in parsed_result.format_text().splitlines():
self.logger.debug(' {}'.format(line))
self.put_info(parsed_result)
def on_mcdr_stop(self):
try:
if self.flag_interrupt:
self.logger.info(self.t('server.on_mcdr_stop.user_interrupted'))
else:
self.logger.info(self.t('server.on_mcdr_stop.server_stop'))
self.plugin_manager.call('on_mcdr_stop', (self.server_interface,), wait=True)
self.flag_exit = True
self.logger.info(self.t('server.on_mcdr_stop.bye'))
except:
self.logger.exception(self.t('server.on_mcdr_stop.stop_error'))
def run(self):
"""
the main loop of MCDR
:return: None
"""
while self.server_status not in [ServerStatus.STOPPED]:
try:
if self.is_server_running():
self.tick()
else:
time.sleep(0.01)
except KeyboardInterrupt:
self.flag_interrupt = True
break
except:
if self.flag_interrupt:
break
else:
self.logger.critical(self.t('server.run.error'), exc_info=True)
self.on_mcdr_stop()
def console_input(self):
"""
the thread for processing console input
:return: None
"""
while True:
try:
text = input()
try:
parsed_result = self.parser_manager.get_parser().parse_console_command(text)
except:
self.logger.exception(self.t('server.console_input.parse_fail', text))
else:
self.logger.debug('Parsed text from console input:')
for line in str(parsed_result).splitlines():
self.logger.debug(' {}'.format(line))
self.put_info(parsed_result)
except (KeyboardInterrupt, EOFError, SystemExit, IOError) as e:
self.logger.debug('Exception {} {} caught in console_input()'.format(type(e), e))
self.stop(forced=self.flag_interrupt)
self.flag_interrupt = True
except:
self.logger.exception(self.t('server.console_input.error'))
def put_info(self, info):
try:
self.info_queue.put_nowait(info)
except queue.Full:
self.logger.warning(self.t('server.info_queue.full'))
def info_react(self):
"""
the thread for looping to react to parsed info
:return: None
"""
while not self.flag_interrupt and not self.flag_exit:
try:
info = self.info_queue.get(timeout=0.01)
except queue.Empty:
pass
else:
for reactor in self.reactors:
try:
reactor.react(info)
except Exception as e:
self.logger.exception(self.t('server.react.error', type(reactor).__name__))
if e is KeyboardInterrupt:
self.flag_interrupt = True
break
def connect_rcon(self):
self.rcon_manager.disconnect()
if self.config['enable_rcon'] and self.is_server_startup():
self.rcon_manager.connect(self.config['rcon_address'], self.config['rcon_port'], self.config['rcon_password'])
class Server:
def __init__(self, old_process=None):
self.console_input_thread = None
self.info_reactor_thread = None
self.process = old_process # type: Popen # the process for the server
self.server_status = ServerStatus.STOPPED
self.flag_interrupt = False # ctrl-c flag
self.flag_server_startup = False # set to True after server startup
self.flag_server_rcon_ready = False # set to True after server started its rcon. used to start the rcon server
self.flag_mcdr_exit = False # MCDR exit flag
self.flag_exit_naturally = True # if MCDR exit after server stop. can be modified by plugins
self.starting_server_lock = Lock(
) # to prevent multiple start_server() call
self.stop_lock = Lock() # to prevent multiple stop() call
# will be assigned in reload_config()
self.encoding_method = None
self.decoding_method = None
self.logger = logger.Logger(self, constant.NAME_SHORT)
self.logger.set_file(constant.LOGGING_FILE)
self.server_logger = logger.ServerLogger('Server')
self.language_manager = LanguageManager(self, constant.LANGUAGE_FOLDER)
self.config = config.Config(self, constant.CONFIG_FILE)
self.rcon_manager = RconManager(self)
self.parser_manager = ParserManager(self, constant.PARSER_FOLDER)
self.load_config() # loads config, language, parsers
self.reactor_manager = ReactorManager(self)
self.server_interface = ServerInterface(self)
self.command_manager = CommandManager(self)
self.plugin_manager = PluginManager(self, constant.PLUGIN_FOLDER)
self.load_plugins()
self.permission_manager = PermissionManager(self,
constant.PERMISSION_FILE)
self.update_helper = UpdateHelper(self)
self.update_helper.check_update_start()
def __del__(self):
try:
if self.process and self.process.poll() is None:
self.kill_server()
except:
pass
# Translate info strings
def translate(self, text, *args):
result = self.language_manager.translate(text).strip()
if len(args) > 0:
result = result.format(*args)
return result
def t(self, text, *args):
return self.translate(text, *args)
# Loaders
def load_config(self):
self.config.read_config()
self.language_manager.load_languages()
self.language_manager.set_language(self.config['language'])
self.logger.info(
self.t('server.load_config.language_set', self.config['language']))
self.logger.set_level(
logging.DEBUG if self.config['debug_mode'] else logging.INFO)
if self.config['debug_mode']:
self.logger.info(self.t('server.load_config.debug_mode_on'))
self.parser_manager.install_parser(self.config['parser'])
self.logger.info(
self.t('server.load_config.parser_set', self.config['parser']))
self.encoding_method = self.config['encoding'] if self.config[
'encoding'] is not None else sys.getdefaultencoding()
self.decoding_method = self.config['decoding'] if self.config[
'decoding'] is not None else locale.getpreferredencoding()
self.logger.info(
self.t('server.load_config.encoding_decoding_set',
self.encoding_method, self.decoding_method))
self.connect_rcon()
def load_plugins(self):
self.logger.info(self.plugin_manager.refresh_all_plugins())
# MCDR status
def is_server_running(self):
return self.process is not None
def is_server_startup(self):
return self.flag_server_startup
def is_server_rcon_ready(self):
return self.flag_server_rcon_ready
def is_interrupt(self):
return self.flag_interrupt
def is_mcdr_exit(self):
return self.flag_mcdr_exit
def is_exit_naturally(self):
return self.flag_exit_naturally
def set_exit_naturally(self, flag):
self.flag_exit_naturally = flag
self.logger.debug('flag_exit_naturally has set to "{}"'.format(
self.flag_exit_naturally))
def set_server_status(self, status):
self.server_status = status
self.logger.debug('Server status has set to "{}"'.format(
ServerStatus.translate_key(status)))
def should_keep_looping(self):
"""
A criterion for sub threads to determine if it should keep looping
:rtype: bool
"""
if self.server_status in [ServerStatus.STOPPED]:
if self.is_interrupt(): # if interrupted and stopped
return False
return not self.flag_exit_naturally # if the sever exited naturally, exit MCDR
return not self.is_mcdr_exit()
# MCDR server
def start_server(self):
"""
try to start the server process
return True if the server process has started successfully
return False if the server is already running or start_server has been called by other
:return: a bool as above
:rtype: bool
"""
acquired = self.starting_server_lock.acquire(blocking=False)
if not acquired:
return False
try:
if self.is_interrupt():
self.logger.warning(
self.t('server.start_server.already_interrupted'))
return False
if self.is_server_running():
self.logger.warning(self.t('server.start_server.start_twice'))
return False
try:
start_command = self.config['start_command']
self.logger.info(
self.t('server.start_server.starting', start_command))
self.process = Popen(start_command,
cwd=self.config['working_directory'],
stdin=PIPE,
stdout=PIPE,
stderr=STDOUT,
shell=True)
except:
self.logger.exception(self.t('server.start_server.start_fail'))
return False
else:
self.set_server_status(ServerStatus.RUNNING)
self.set_exit_naturally(True)
self.logger.info(
self.t('server.start_server.pid_info', self.process.pid))
return True
finally:
self.starting_server_lock.release()
def start(self):
"""
The entry method to start MCDR
Try to start the server. if succeeded the console thread will start and MCDR will start ticking
:raise: Raise ServerStartError if the server is already running or start_server has been called by other
"""
def start_thread(target, args, name):
self.logger.debug('{} thread starting'.format(name))
thread = tool.start_thread(target, args, name)
return thread
if not self.start_server():
raise ServerStartError()
if not self.config['disable_console_thread']:
self.console_input_thread = start_thread(self.console_input, (),
'Console')
else:
self.logger.info('Console thread disabled')
self.info_reactor_thread = start_thread(self.reactor_manager.run, (),
'InfoReactor')
self.run()
return self.process
def kill_server(self):
"""
Kill the server process group
"""
if self.process and self.process.poll() is None:
self.logger.info(self.t('server.kill_server.killing'))
try:
for child in psutil.Process(
self.process.pid).children(recursive=True):
child.kill()
self.logger.info(
self.t('server.kill_server.process_killed', child.pid))
except psutil.NoSuchProcess:
pass
self.process.kill()
self.logger.info(
self.t('server.kill_server.process_killed', self.process.pid))
else:
raise IllegalCall("Server process has already been terminated")
def interrupt(self):
"""
Interrupt MCDR
The first call will softly stop the server and the later calls will kill the server
Return if it's the first try
:rtype: bool
"""
self.logger.debug(
'Interrupting, first strike = {}'.format(not self.is_interrupt()))
self.stop(forced=self.is_interrupt())
ret = self.is_interrupt()
self.flag_interrupt = True
return ret
def stop(self, forced=False):
"""
stop the server
:param forced: an optional bool. If it's False (default) MCDR will stop the server by sending the STOP_COMMAND from the
current parser. If it's True MCDR will just kill the server process group
"""
with self.stop_lock:
if not self.is_server_running():
self.logger.warning(self.t('server.stop.stop_when_stopped'))
return
self.set_server_status(ServerStatus.STOPPING)
if not forced:
try:
self.send(self.parser_manager.get_stop_command())
except:
self.logger.error(self.t('server.stop.stop_fail'))
forced = True
if forced:
try:
self.kill_server()
except IllegalCall:
pass
def send(self, text, ending='\n', encoding=None):
"""
Send a text to server's stdin if the server is running
:param text: A str or a bytes you want to send. if text is a str then it will attach the ending parameter to its
back
:param str ending: The suffix of a command with a default value \n
:param str encoding: The encoding method for the text. If it's not given used the method in config
"""
if encoding is None:
encoding = self.encoding_method
if type(text) is str:
text = (text + ending).encode(encoding)
if self.is_server_running():
self.process.stdin.write(text)
self.process.stdin.flush()
else:
self.logger.warning(self.t('server.send.send_when_stopped'))
def receive(self):
"""
Try to receive a str from server's stdout. This will block the current thread
If server has stopped it will wait up to 10s for the server process to exit, then raise a ServerStopped exception
:rtype: str
:raise: ServerStopped
"""
while True:
try:
text = next(iter(self.process.stdout))
except StopIteration: # server process has stopped
for i in range(constant.WAIT_TIME_AFTER_SERVER_STDOUT_END_SEC *
10):
if self.process.poll() is not None:
break
time.sleep(0.1)
if i % 10 == 0:
self.logger.info(self.t('server.receive.wait_stop'))
raise ServerStopped()
else:
try:
text = text.decode(self.decoding_method)
except:
self.logger.error(
self.t('server.receive.decode_fail', text))
raise
return text.rstrip().lstrip()
def on_server_stop(self):
return_code = self.process.poll()
self.logger.info(
self.t('server.on_server_stop.show_stopcode', return_code))
self.process = None
self.flag_server_startup = False
self.flag_server_rcon_ready = False
self.set_server_status(ServerStatus.PRE_STOPPED)
self.plugin_manager.call('on_server_stop',
(self.server_interface, return_code),
wait=True)
if self.server_status == ServerStatus.PRE_STOPPED:
self.set_server_status(ServerStatus.STOPPED)
def tick(self):
"""
ticking MCDR:
try to receive a new line from server's stdout and parse / display / process the text
"""
try:
text = self.receive()
except ServerStopped:
self.on_server_stop()
return
try:
text = self.parser_manager.get_parser().pre_parse_server_stdout(
text)
except:
self.logger.warning(self.t('server.tick.pre_parse_fail'))
self.server_logger.info(text)
try:
parsed_result = self.parser_manager.get_parser(
).parse_server_stdout(text)
except:
self.logger.debug(
'Fail to parse text "{}" from stdout of the server, using raw parser'
.format(text))
for line in traceback.format_exc().splitlines():
self.logger.debug(' {}'.format(line))
parsed_result = self.parser_manager.get_basic_parser(
).parse_server_stdout(text)
else:
self.logger.debug('Parsed text from server stdin:')
for line in parsed_result.format_text().splitlines():
self.logger.debug(' {}'.format(line))
self.reactor_manager.put_info(parsed_result)
def on_mcdr_stop(self):
try:
if self.is_interrupt():
self.logger.info(
self.t('server.on_mcdr_stop.user_interrupted'))
else:
self.logger.info(self.t('server.on_mcdr_stop.server_stop'))
self.plugin_manager.call('on_mcdr_stop', (self.server_interface, ),
wait=True)
self.logger.info(self.t('server.on_mcdr_stop.bye'))
except KeyboardInterrupt: # I don't know why there sometimes will be a KeyboardInterrupt if MCDR is stopped by ctrl-c
pass
except:
self.logger.exception(self.t('server.on_mcdr_stop.stop_error'))
finally:
self.flag_mcdr_exit = True
def run(self):
"""
the main loop of MCDR
:return: None
"""
while self.should_keep_looping():
try:
if self.is_server_running():
self.tick()
else:
time.sleep(0.01)
except KeyboardInterrupt:
self.interrupt()
except:
if self.is_interrupt():
break
else:
self.logger.critical(self.t('server.run.error'),
exc_info=True)
self.on_mcdr_stop()
def console_input(self):
"""
the thread for processing console input
:return: None
"""
while True:
try:
text = input()
try:
parsed_result = self.parser_manager.get_parser(
).parse_console_command(text)
except:
self.logger.exception(
self.t('server.console_input.parse_fail', text))
else:
self.logger.debug('Parsed text from console input:')
for line in parsed_result.format_text().splitlines():
self.logger.debug(' {}'.format(line))
self.reactor_manager.put_info(parsed_result)
except (KeyboardInterrupt, EOFError, SystemExit, IOError) as e:
self.logger.debug(
'Exception {} {} caught in console_input()'.format(
type(e), e))
self.interrupt()
except:
self.logger.exception(self.t('server.console_input.error'))
def connect_rcon(self):
self.rcon_manager.disconnect()
if self.config['enable_rcon'] and self.is_server_rcon_ready():
self.rcon_manager.connect(self.config['rcon_address'],
self.config['rcon_port'],
self.config['rcon_password'])