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import abc
import os
import sys
import logging
from pathlib import Path
from .storage import storage
class LOG_LEVELS:
Critical = 0b001
Error = 0b010
Warning = 0b011
Info = 0b101
Debug = 0b111
class journald(dict):
@abc.abstractmethod
def log(message, level=LOG_LEVELS.Debug):
import systemd.journal
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)
if level == LOG_LEVELS.Critical:
log_adapter.critical(message)
elif level == LOG_LEVELS.Error:
log_adapter.error(message)
elif level == LOG_LEVELS.Warning:
log_adapter.warning(message)
elif level == LOG_LEVELS.Info:
log_adapter.info(message)
elif level == LOG_LEVELS.Debug:
log_adapter.debug(message)
else:
# Fallback logger
log_adapter.debug(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():
"""
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, **kwargs):
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[v])
elif k == 'bg':
code_list.append(background[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, **kwargs):
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 = {'bg' : 'black', 'fg': 'white', **kwargs}
string = stylize_output(string, **kwargs)
# If a logfile is defined in storage,
# we use that one to output everything
if (logfile := storage.get('LOG_FILE', None)):
absolute_logfile = os.path.join(storage.get('LOG_PATH', './'), logfile)
if not os.path.isfile(absolute_logfile):
os.makedirs(os.path.dirname(absolute_logfile))
Path(absolute_logfile).touch() # Overkill?
with open(absolute_logfile, 'a') as log_file:
logfile.write(f"{orig_string}\n")
# If we assigned a level, try to log it to systemd's journald.
# Unless the level is higher than we've decided to output interactively.
# (Remember, log files still get *ALL* the output despite level restrictions)
if 'level' in kwargs:
if kwargs['level'] > storage.get('LOG_LEVEL', LOG_LEVELS.Info):
# Level on log message was Debug, but output level is set to Info.
# In that case, we'll drop it.
return None
try:
journald.log(string, level=kwargs['level'])
except ModuleNotFoundError:
pass # Ignore writing to journald
# 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
sys.stdout.write(string)
sys.stdout.flush()
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