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import abc
import logging
import os
import sys
from pathlib import Path
from .storage import storage
# TODO: use logging's built in levels instead.
# Although logging is threaded and I wish to avoid that.
# It's more Pythonistic or w/e you want to call it.
class LogLevels:
Critical = 0b001
Error = 0b010
Warning = 0b011
Info = 0b101
Debug = 0b111
class Journald(dict):
@abc.abstractmethod
def log(message, level=logging.DEBUG):
try:
import systemd.journal # type: ignore
except ModuleNotFoundError:
return False
# For backwards compability, convert old style log-levels
# to logging levels (and warn about deprecated usage)
# There's some code re-usage here but that should be fine.
# TODO: Remove these in a few versions:
if level == LogLevels.Critical:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
level = logging.CRITICAL
elif level == LogLevels.Error:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
level = logging.ERROR
elif level == LogLevels.Warning:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
level = logging.WARNING
elif level == LogLevels.Info:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
level = logging.INFO
elif level == LogLevels.Debug:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
level = logging.DEBUG
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():
"""
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 = {'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")
# 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:
# For backwards compability, convert old style log-levels
# to logging levels (and warn about deprecated usage)
# There's some code re-usage here but that should be fine.
# TODO: Remove these in a few versions:
if kwargs['level'] == LogLevels.Critical:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
kwargs['level'] = logging.CRITICAL
elif kwargs['level'] == LogLevels.Error:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
kwargs['level'] = logging.ERROR
elif kwargs['level'] == LogLevels.Warning:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
kwargs['level'] = logging.WARNING
elif kwargs['level'] == LogLevels.Info:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
kwargs['level'] = logging.INFO
elif kwargs['level'] == LogLevels.Debug:
log("Deprecated level detected in log message, please use new logging.<level> instead for the following log message:", fg="red", level=logging.ERROR, force=True)
kwargs['level'] = logging.DEBUG
if kwargs['level'] > storage.get('LOG_LEVEL', logging.INFO) and 'force' not in kwargs:
# 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.get('level', logging.INFO))
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(f"{string}\n")
sys.stdout.flush()
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