import logging import argparse import sys import os class App: def __init__(self): # Argument Parser self.parser = argparse.ArgumentParser() self.parser.add_argument("-d", "--debug", action="store_true", help="Debug") # Logging self.logger = logging.getLogger() # Application specific initialization self.init() def __call__(self): self.args, _ = self.parser.parse_known_args() # configure log output self.log_level = logging.DEBUG if self.args.debug else logging.INFO self.logger.setLevel(self.log_level) self.handler = logging.StreamHandler(sys.stdout) self.handler.setLevel(self.log_level) self.formatter = logging.Formatter("%(asctime)s [%(levelname)s] %(message)s") self.handler.setFormatter(self.formatter) self.logger.addHandler(self.handler) # execute requested function self.before() return_code = self.call() self.after() if isinstance(return_code, int): exit(return_code) else: self.logger.error(f"Missing return code") exit(255) def call(self): if "func" not in self.args: self.parser.error("Choose something to do") return self.args.func() def init(self): raise Exception("init() is not implemented") def before(self): pass def after(self): pass