mirror of
https://github.com/thegeeklab/ansible-doctor.git
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341 lines
9.7 KiB
Python
341 lines
9.7 KiB
Python
#!/usr/bin/env python3
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"""Global utility methods and classes."""
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import logging
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import os
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import sys
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from collections.abc import Iterable
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import colorama
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from pythonjsonlogger import jsonlogger
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CONSOLE_FORMAT = "{}{}[%(levelname)s]{} %(message)s"
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JSON_FORMAT = "%(asctime)s %(levelname)s %(message)s"
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def strtobool(value):
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"""Convert a string representation of truth to true or false."""
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_map = {
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"y": True,
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"yes": True,
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"t": True,
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"true": True,
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"on": True,
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"1": True,
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"n": False,
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"no": False,
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"f": False,
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"false": False,
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"off": False,
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"0": False,
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}
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try:
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return _map[str(value).lower()]
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except KeyError as err:
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raise ValueError(f'"{value}" is not a valid bool value') from err
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def to_bool(string):
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return bool(strtobool(str(string)))
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def flatten(items):
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for x in items:
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if isinstance(x, Iterable) and not isinstance(x, (str, bytes)):
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yield from flatten(x)
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else:
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yield x
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def _should_do_markup():
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py_colors = os.environ.get("PY_COLORS", None)
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if py_colors is not None:
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return to_bool(py_colors)
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return sys.stdout.isatty() and os.environ.get("TERM") != "dumb"
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def _split_string(string, delimiter, escape, maxsplit=None):
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result = []
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current_element = []
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iterator = iter(string)
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count_split = 0
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skip_split = False
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for character in iterator:
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if maxsplit and count_split >= maxsplit:
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skip_split = True
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if character == escape and not skip_split:
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try:
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next_character = next(iterator)
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if next_character != delimiter and next_character != escape:
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# Do not copy the escape character if it is intended to escape either the
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# delimiter or the escape character itself. Copy the escape character
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# if it is not used to escape either of these characters.
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current_element.append(escape)
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current_element.append(next_character)
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count_split += 1
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except StopIteration:
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current_element.append(escape)
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elif character == delimiter and not skip_split:
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result.append("".join(current_element))
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current_element = []
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count_split += 1
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else:
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current_element.append(character)
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result.append("".join(current_element))
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return result
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colorama.init(autoreset=True, strip=not _should_do_markup())
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class Singleton(type):
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"""Meta singleton class."""
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_instances = {}
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def __call__(cls, *args, **kwargs):
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if cls not in cls._instances:
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cls._instances[cls] = super().__call__(*args, **kwargs)
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return cls._instances[cls]
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class LogFilter:
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"""Exclude log messages above the logged level."""
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def __init__(self, level):
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"""
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Initialize a new custom log filter.
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:param level: Log level limit
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:returns: None
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"""
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self.__level = level
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def filter(self, logRecord): # noqa
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# https://docs.python.org/3/library/logging.html#logrecord-attributes
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return logRecord.levelno <= self.__level
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class MultilineFormatter(logging.Formatter):
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"""Reset color after newline characters."""
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def format(self, record):
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record.msg = record.msg.strip().replace("\n", f"\n{colorama.Style.RESET_ALL}... ")
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return logging.Formatter.format(self, record)
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class MultilineJsonFormatter(jsonlogger.JsonFormatter):
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"""Remove newline characters."""
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def format(self, record):
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record.msg = record.msg.replace("\n", " ")
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return jsonlogger.JsonFormatter.format(self, record)
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class Log:
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"""Handle logging."""
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def __init__(self, level=logging.WARNING, name="ansibledoctor", json=False):
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self.ctx = os.getcwd()
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self.logger = logging.getLogger(name)
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self.logger.setLevel(level)
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self.register_hanlers(json=json)
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self.logger.propagate = False
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def _get_error_handler(self, json=False):
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handler = logging.StreamHandler(sys.stderr)
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handler.setLevel(logging.ERROR)
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handler.addFilter(LogFilter(logging.ERROR))
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handler.setFormatter(
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MultilineFormatter(
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self.error(
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CONSOLE_FORMAT.format(
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colorama.Fore.RED, colorama.Style.BRIGHT, colorama.Style.RESET_ALL
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)
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)
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)
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)
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if json:
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handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT))
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return handler
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def _get_warning_handler(self, json=False):
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handler = logging.StreamHandler(sys.stdout)
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handler.setLevel(logging.WARNING)
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handler.addFilter(LogFilter(logging.WARNING))
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handler.setFormatter(
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MultilineFormatter(
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self.warning(
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CONSOLE_FORMAT.format(
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colorama.Fore.YELLOW, colorama.Style.BRIGHT, colorama.Style.RESET_ALL
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)
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)
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)
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)
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if json:
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handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT))
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return handler
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def _get_info_handler(self, json=False):
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handler = logging.StreamHandler(sys.stdout)
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handler.setLevel(logging.INFO)
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handler.addFilter(LogFilter(logging.INFO))
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handler.setFormatter(
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MultilineFormatter(
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self.info(
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CONSOLE_FORMAT.format(
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colorama.Fore.CYAN, colorama.Style.BRIGHT, colorama.Style.RESET_ALL
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)
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)
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)
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)
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if json:
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handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT))
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return handler
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def _get_critical_handler(self, json=False):
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handler = logging.StreamHandler(sys.stderr)
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handler.setLevel(logging.CRITICAL)
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handler.addFilter(LogFilter(logging.CRITICAL))
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handler.setFormatter(
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MultilineFormatter(
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self.critical(
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CONSOLE_FORMAT.format(
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colorama.Fore.RED, colorama.Style.BRIGHT, colorama.Style.RESET_ALL
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)
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)
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)
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)
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if json:
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handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT))
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return handler
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def _get_debug_handler(self, json=False):
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handler = logging.StreamHandler(sys.stderr)
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handler.setLevel(logging.DEBUG)
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handler.addFilter(LogFilter(logging.DEBUG))
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handler.setFormatter(
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MultilineFormatter(
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self.debug(
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CONSOLE_FORMAT.format(
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colorama.Fore.BLUE, colorama.Style.BRIGHT, colorama.Style.RESET_ALL
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)
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)
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)
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)
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if json:
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handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT))
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return handler
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def register_hanlers(self, json=False):
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"""
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Enable or disable JSON logging.
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:param enable: True to enable JSON logging, False to disable
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"""
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# Remove all existing handlers
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for handler in self.logger.handlers[:]:
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self.logger.removeHandler(handler)
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self.logger.addHandler(self._get_error_handler(json=json))
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self.logger.addHandler(self._get_warning_handler(json=json))
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self.logger.addHandler(self._get_info_handler(json=json))
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self.logger.addHandler(self._get_critical_handler(json=json))
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self.logger.addHandler(self._get_debug_handler(json=json))
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def set_level(self, s):
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self.logger.setLevel(s.upper())
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def debug(self, msg):
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"""Format info messages and return string."""
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return msg
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def critical(self, msg):
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"""Format critical messages and return string."""
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return msg
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def error(self, msg):
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"""Format error messages and return string."""
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return msg
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def warning(self, msg):
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"""Format warning messages and return string."""
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return msg
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def info(self, msg):
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"""Format info messages and return string."""
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return msg
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def _color_text(self, color, msg):
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"""
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Colorize strings.
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:param color: colorama color settings
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:param msg: string to colorize
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:returns: string
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"""
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return f"{color}{msg}{colorama.Style.RESET_ALL}"
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def sysexit(self, code=1):
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sys.exit(code)
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def sysexit_with_message(self, msg, code=1):
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self.logger.critical(str(msg).strip())
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self.sysexit(code)
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class SingleLog(Log, metaclass=Singleton):
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"""Singleton logging class."""
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pass
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class FileUtils:
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"""Mics static methods for file handling."""
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@staticmethod
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def create_path(path):
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os.makedirs(path, exist_ok=True)
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@staticmethod
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def query_yes_no(question, default=True):
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"""
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Ask a yes/no question via input() and return their answer.
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"question" is a string that is presented to the user.
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"default" is the presumed answer if the user just hits <Enter>.
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It must be "yes" (the default), "no" or None (meaning
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an answer is required of the user).
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The "answer" return value is one of "yes" or "no".
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"""
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prompt = "[Y/n]" if default else "[N/y]"
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while True:
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try:
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# input method is safe in python3
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choice = input(f"{question} {prompt} ") or default # nosec
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return to_bool(choice)
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except ValueError:
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print("Invalid input. Please enter 'y' or 'n'.") # noqa: T201
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except KeyboardInterrupt as e:
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raise e
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