Source code for perfsim.observers.log_observer

#  Copyright (C) 2020 Michel Gokan Khan
#  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 2 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, write to the Free Software Foundation, Inc.,
#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
#  This file is a part of the PerfSim project, which is now open source and available under the GPLv2.
#  Written by Michel Gokan Khan, February 2020

from abc import ABC
from typing import TYPE_CHECKING

from perfsim import EventObserver, Observable

if TYPE_CHECKING:
    from perfsim import Logger




class LogObserver(EventObserver, ABC):
    logger: 'Logger'

    def __init__(self, name: str, subject: Observable, logger: 'Logger'):
        super().__init__(name=name, subject=subject)
        self.logger = logger



    def observe(self, event_name: str, **kwargs):
        """
        Observe an event.

        :param event_name:
        :param kwargs:
        :return:
        """

        self.logger.log("<<<<<<< " + event_name + " START >>>>>>>")
        super().observe(event_name, **kwargs)
        self.logger.log("<<<<<<< " + event_name + " END >>>>>>>\n")