import logging import os import sys from pathlib import Path from typing import Dict, Union from .storage import storage class Journald: @staticmethod def log(message :str, level :int = logging.DEBUG) -> None: try: import systemd.journal # type: ignore except ModuleNotFoundError: return None log_adapter = logging.getLogger('archinstall') log_fmt = logging.Formatter("[%(levelname)s]: %(message)s") log_ch = systemd.journal.JournalHandler() log_ch.setFormatter(log_fmt) log_adapter.addHandler(log_ch) log_adapter.setLevel(logging.DEBUG) log_adapter.log(level, message) # TODO: Replace log() for session based logging. class SessionLogging: def __init__(self): pass # Found first reference here: https://stackoverflow.com/questions/7445658/how-to-detect-if-the-console-does-support-ansi-escape-codes-in-python # And re-used this: https://github.com/django/django/blob/master/django/core/management/color.py#L12 def supports_color() -> bool: """ Return True if the running system's terminal supports color, and False otherwise. """ supported_platform = sys.platform != 'win32' or 'ANSICON' in os.environ # isatty is not always implemented, #6223. is_a_tty = hasattr(sys.stdout, 'isatty') and sys.stdout.isatty() return supported_platform and is_a_tty # Heavily influenced by: https://github.com/django/django/blob/ae8338daf34fd746771e0678081999b656177bae/django/utils/termcolors.py#L13 # Color options here: https://askubuntu.com/questions/528928/how-to-do-underline-bold-italic-strikethrough-color-background-and-size-i def stylize_output(text: str, *opts :str, **kwargs :Union[str, int, Dict[str, Union[str, int]]]) -> str: opt_dict = {'bold': '1', 'italic': '3', 'underscore': '4', 'blink': '5', 'reverse': '7', 'conceal': '8'} color_names = ('black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white') foreground = {color_names[x]: '3%s' % x for x in range(8)} background = {color_names[x]: '4%s' % x for x in range(8)} reset = '0' code_list = [] if text == '' and len(opts) == 1 and opts[0] == 'reset': return '\x1b[%sm' % reset for k, v in kwargs.items(): if k == 'fg': code_list.append(foreground[str(v)]) elif k == 'bg': code_list.append(background[str(v)]) for o in opts: if o in opt_dict: code_list.append(opt_dict[o]) if 'noreset' not in opts: text = '%s\x1b[%sm' % (text or '', reset) return '%s%s' % (('\x1b[%sm' % ';'.join(code_list)), text or '') def log(*args :str, **kwargs :Union[str, int, Dict[str, Union[str, int]]]) -> None: string = orig_string = ' '.join([str(x) for x in args]) # Attempt to colorize the output if supported # Insert default colors and override with **kwargs if supports_color(): kwargs = {'fg': 'white', **kwargs} string = stylize_output(string, **kwargs) # If a logfile is defined in storage, # we use that one to output everything if filename := storage.get('LOG_FILE', None): absolute_logfile = os.path.join(storage.get('LOG_PATH', './'), filename) try: Path(absolute_logfile).parents[0].mkdir(exist_ok=True, parents=True) with open(absolute_logfile, 'a') as log_file: log_file.write("") except PermissionError: # Fallback to creating the log file in the current folder err_string = f"Not enough permission to place log file at {absolute_logfile}, creating it in {Path('./').absolute() / filename} instead." absolute_logfile = Path('./').absolute() / filename absolute_logfile.parents[0].mkdir(exist_ok=True) absolute_logfile = str(absolute_logfile) storage['LOG_PATH'] = './' log(err_string, fg="red") with open(absolute_logfile, 'a') as log_file: log_file.write(f"{orig_string}\n") Journald.log(string, level=int(str(kwargs.get('level', logging.INFO)))) # Finally, print the log unless we skipped it based on level. # We use sys.stdout.write()+flush() instead of print() to try and # fix issue #94 if kwargs.get('level', logging.INFO) != logging.DEBUG or storage['arguments'].get('verbose', False): sys.stdout.write(f"{string}\n") sys.stdout.flush()