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logger.py
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243 lines (211 loc) · 8.42 KB
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import logging
import os
import re
import sh
from sys import stdout, stderr
from math import log10
from collections import defaultdict
from colorama import Style as Colo_Style, Fore as Colo_Fore
import six
# This codecs change fixes a bug with log output, but crashes under python3
if not six.PY3:
import codecs
stdout = codecs.getwriter('utf8')(stdout)
stderr = codecs.getwriter('utf8')(stderr)
if six.PY2:
unistr = unicode # noqa F821
else:
unistr = str
# monkey patch to show full output
sh.ErrorReturnCode.truncate_cap = 999999
class LevelDifferentiatingFormatter(logging.Formatter):
def format(self, record):
if record.levelno > 30:
record.msg = '{}{}[ERROR]{}{}: '.format(
Err_Style.BRIGHT, Err_Fore.RED, Err_Fore.RESET,
Err_Style.RESET_ALL) + record.msg
elif record.levelno > 20:
record.msg = '{}{}[WARNING]{}{}: '.format(
Err_Style.BRIGHT, Err_Fore.RED, Err_Fore.RESET,
Err_Style.RESET_ALL) + record.msg
elif record.levelno > 10:
record.msg = '{}[INFO]{}: '.format(
Err_Style.BRIGHT, Err_Style.RESET_ALL) + record.msg
else:
record.msg = '{}{}[DEBUG]{}{}: '.format(
Err_Style.BRIGHT, Err_Fore.LIGHTBLACK_EX, Err_Fore.RESET,
Err_Style.RESET_ALL) + record.msg
return super(LevelDifferentiatingFormatter, self).format(record)
logger = logging.getLogger('p4a')
# Necessary as importlib reloads this,
# which would add a second handler and reset the level
if not hasattr(logger, 'touched'):
logger.setLevel(logging.INFO)
logger.touched = True
ch = logging.StreamHandler(stderr)
formatter = LevelDifferentiatingFormatter('%(message)s')
ch.setFormatter(formatter)
logger.addHandler(ch)
info = logger.info
debug = logger.debug
warning = logger.warning
error = logger.error
class colorama_shim(object):
def __init__(self, real):
self._dict = defaultdict(str)
self._real = real
self._enabled = False
def __getattr__(self, key):
return getattr(self._real, key) if self._enabled else self._dict[key]
def enable(self, enable):
self._enabled = enable
Out_Style = colorama_shim(Colo_Style)
Out_Fore = colorama_shim(Colo_Fore)
Err_Style = colorama_shim(Colo_Style)
Err_Fore = colorama_shim(Colo_Fore)
def setup_color(color):
enable_out = (False if color == 'never' else
True if color == 'always' else
stdout.isatty())
Out_Style.enable(enable_out)
Out_Fore.enable(enable_out)
enable_err = (False if color == 'never' else
True if color == 'always' else
stderr.isatty())
Err_Style.enable(enable_err)
Err_Fore.enable(enable_err)
def info_main(*args):
logger.info(''.join([Err_Style.BRIGHT, Err_Fore.GREEN] + list(args) +
[Err_Style.RESET_ALL, Err_Fore.RESET]))
def info_notify(s):
info('{}{}{}{}'.format(Err_Style.BRIGHT, Err_Fore.LIGHTBLUE_EX, s,
Err_Style.RESET_ALL))
def shorten_string(string, max_width):
''' make limited length string in form:
"the string is very lo...(and 15 more)"
'''
string_len = len(string)
if string_len <= max_width:
return string
visible = max_width - 16 - int(log10(string_len))
# expected suffix len "...(and XXXXX more)"
if not isinstance(string, unistr):
visstring = unistr(string[:visible], errors='ignore')
else:
visstring = string[:visible]
return u''.join((visstring, u'...(and ',
unistr(string_len - visible), u' more)'))
def get_console_width():
try:
cols = int(os.environ['COLUMNS'])
except (KeyError, ValueError):
pass
else:
if cols >= 25:
return cols
try:
cols = max(25, int(os.popen('stty size', 'r').read().split()[1]))
except Exception:
pass
else:
return cols
return 100
def shprint(command, *args, **kwargs):
'''Runs the command (which should be an sh.Command instance), while
logging the output.'''
kwargs["_iter"] = True
kwargs["_out_bufsize"] = 1
kwargs["_err_to_out"] = True
kwargs["_bg"] = True
is_critical = kwargs.pop('_critical', False)
tail_n = kwargs.pop('_tail', None)
full_debug = False
if "P4A_FULL_DEBUG" in os.environ:
tail_n = 0
full_debug = True
filter_in = kwargs.pop('_filter', None)
filter_out = kwargs.pop('_filterout', None)
if len(logger.handlers) > 1:
logger.removeHandler(logger.handlers[1])
columns = get_console_width()
command_path = str(command).split('/')
command_string = command_path[-1]
string = ' '.join(['{}->{} running'.format(Out_Fore.LIGHTBLACK_EX,
Out_Style.RESET_ALL),
command_string] + list(args))
# If logging is not in DEBUG mode, trim the command if necessary
if logger.level > logging.DEBUG:
logger.info('{}{}'.format(shorten_string(string, columns - 12),
Err_Style.RESET_ALL))
else:
logger.debug('{}{}'.format(string, Err_Style.RESET_ALL))
need_closing_newline = False
try:
msg_hdr = ' working: '
msg_width = columns - len(msg_hdr) - 1
output = command(*args, **kwargs)
for line in output:
if isinstance(line, bytes):
line = line.decode('utf-8', errors='replace')
if logger.level > logging.DEBUG:
if full_debug:
stdout.write(line)
stdout.flush()
continue
msg = line.replace(
'\n', ' ').replace(
'\t', ' ').replace(
'\b', ' ').rstrip()
if msg:
if "CI" not in os.environ:
stdout.write(u'{}\r{}{:<{width}}'.format(
Err_Style.RESET_ALL, msg_hdr,
shorten_string(msg, msg_width), width=msg_width))
stdout.flush()
need_closing_newline = True
else:
logger.debug(''.join(['\t', line.rstrip()]))
if need_closing_newline:
stdout.write('{}\r{:>{width}}\r'.format(
Err_Style.RESET_ALL, ' ', width=(columns - 1)))
stdout.flush()
except sh.ErrorReturnCode as err:
if need_closing_newline:
stdout.write('{}\r{:>{width}}\r'.format(
Err_Style.RESET_ALL, ' ', width=(columns - 1)))
stdout.flush()
if tail_n is not None or filter_in or filter_out:
def printtail(out, name, forecolor, tail_n=0,
re_filter_in=None, re_filter_out=None):
lines = out.splitlines()
if re_filter_in is not None:
lines = [l for l in lines if re_filter_in.search(l)]
if re_filter_out is not None:
lines = [l for l in lines if not re_filter_out.search(l)]
if tail_n == 0 or len(lines) <= tail_n:
info('{}:\n{}\t{}{}'.format(
name, forecolor, '\t\n'.join(lines), Out_Fore.RESET))
else:
info('{} (last {} lines of {}):\n{}\t{}{}'.format(
name, tail_n, len(lines),
forecolor, '\t\n'.join([s for s in lines[-tail_n:]]),
Out_Fore.RESET))
printtail(err.stdout.decode('utf-8'), 'STDOUT', Out_Fore.YELLOW, tail_n,
re.compile(filter_in) if filter_in else None,
re.compile(filter_out) if filter_out else None)
printtail(err.stderr.decode('utf-8'), 'STDERR', Err_Fore.RED)
if is_critical:
env = kwargs.get("env")
if env is not None:
info("{}ENV:{}\n{}\n".format(
Err_Fore.YELLOW, Err_Fore.RESET, "\n".join(
"set {}={}".format(n, v) for n, v in env.items())))
info("{}COMMAND:{}\ncd {} && {} {}\n".format(
Err_Fore.YELLOW, Err_Fore.RESET, os.getcwd(), command,
' '.join(args)))
warning("{}ERROR: {} failed!{}".format(
Err_Fore.RED, command, Err_Fore.RESET))
exit(1)
else:
raise
return output
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