# SimQN: a discrete-event simulator for the quantum networks
# Copyright (C) 2021-2022 Lutong Chen, Jian Li, Kaiping Xue
# University of Science and Technology of China, USTC.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import logging
import sys
logger = logging.getLogger("qns")
"""
The default ``logger`` used by SimQN
"""
logger.setLevel(logging.INFO)
handle = logging.StreamHandler(sys.stdout)
logger.addHandler(handle)
[docs]def install(s):
"""
Install the logger to the simulator
Args:
s (Simulator): the simulator
"""
logger._simulator = s
[docs]def debug(msg, *args):
if hasattr(logger, "_simulator"):
logger.debug(f"[{logger._simulator.tc}] " + msg, *args)
else:
logger.debug(msg, *args)
[docs]def info(msg, *args):
if hasattr(logger, "_simulator"):
logger.info(f"[{logger._simulator.tc}] " + msg, *args)
else:
logger.info(msg, *args)
[docs]def error(msg, *args):
if hasattr(logger, "_simulator"):
logger.error(f"[{logger._simulator.tc}] " + msg, *args)
else:
logger.error(msg, *args)
[docs]def warn(msg, *args):
if hasattr(logger, "_simulator"):
logger.warn(f"[{logger._simulator.tc}] " + msg, *args)
else:
logger.warn(msg, *args)
[docs]def critical(msg, *args):
if hasattr(logger, "_simulator"):
logger.critical(f"[{logger._simulator.tc}] " + msg, *args)
else:
logger.critical(msg, *args)
[docs]def monitor(*args, sep: str = ",", with_time: bool = False):
attrs = list(args)
if with_time:
attrs.insert(0, logger._simulator.tc)
attrs_s = [str(a) for a in attrs]
msg = sep.join(attrs_s)
logger.info(msg)