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# -*- coding: utf-8 -*-
# Description:
# Author: Ilya Mashchenko (ilyam8)
# SPDX-License-Identifier: GPL-3.0-or-later
import logging
import os
import stat
import traceback
from sys import exc_info
try:
from time import monotonic as time
except ImportError:
from time import time
from bases.collection import on_try_except_finally, unicode_str
LOGGING_LEVELS = {
'CRITICAL': 50,
'ERROR': 40,
'WARNING': 30,
'INFO': 20,
'DEBUG': 10,
'NOTSET': 0,
}
def is_stderr_connected_to_journal():
journal_stream = os.environ.get("JOURNAL_STREAM")
if not journal_stream:
return False
colon_index = journal_stream.find(":")
if colon_index <= 0:
return False
device, inode = journal_stream[:colon_index], journal_stream[colon_index + 1:]
try:
device_number, inode_number = os.fstat(2)[stat.ST_DEV], os.fstat(2)[stat.ST_INO]
except OSError:
return False
return str(device_number) == device and str(inode_number) == inode
is_journal = is_stderr_connected_to_journal()
DEFAULT_LOG_LINE_FORMAT = '%(asctime)s: %(name)s %(levelname)s : %(message)s'
PYTHON_D_LOG_LINE_FORMAT = '%(asctime)s: %(name)s %(levelname)s: %(module_name)s[%(job_name)s] : %(message)s'
if is_journal:
DEFAULT_LOG_LINE_FORMAT = '%(name)s %(levelname)s : %(message)s'
PYTHON_D_LOG_LINE_FORMAT = '%(name)s %(levelname)s: %(module_name)s[%(job_name)s] : %(message)s '
DEFAULT_LOG_TIME_FORMAT = '%Y-%m-%d %H:%M:%S'
PYTHON_D_LOG_NAME = 'python.d'
def add_traceback(func):
def on_call(*args):
self = args[0]
if not self.log_traceback:
func(*args)
else:
if exc_info()[0]:
func(*args)
func(self, traceback.format_exc())
else:
func(*args)
return on_call
class BaseLogger(object):
def __init__(
self,
logger_name,
log_fmt=DEFAULT_LOG_LINE_FORMAT,
date_fmt=DEFAULT_LOG_TIME_FORMAT,
handler=logging.StreamHandler,
):
self.logger = logging.getLogger(logger_name)
self._muted = False
if not self.has_handlers():
self.severity = 'INFO'
self.logger.addHandler(handler())
self.set_formatter(fmt=log_fmt, date_fmt=date_fmt)
def __repr__(self):
return '<Logger: {name})>'.format(name=self.logger.name)
def set_formatter(self, fmt, date_fmt=DEFAULT_LOG_TIME_FORMAT):
if self.has_handlers():
self.logger.handlers[0].setFormatter(logging.Formatter(fmt=fmt, datefmt=date_fmt))
def has_handlers(self):
return self.logger.handlers
@property
def severity(self):
return self.logger.getEffectiveLevel()
@severity.setter
def severity(self, level):
if level in LOGGING_LEVELS:
self.logger.setLevel(LOGGING_LEVELS[level])
def _log(self, level, *msg, **kwargs):
if not self._muted:
self.logger.log(level, ' '.join(map(unicode_str, msg)), **kwargs)
def debug(self, *msg, **kwargs):
self._log(logging.DEBUG, *msg, **kwargs)
def info(self, *msg, **kwargs):
self._log(logging.INFO, *msg, **kwargs)
def warning(self, *msg, **kwargs):
self._log(logging.WARN, *msg, **kwargs)
def error(self, *msg, **kwargs):
self._log(logging.ERROR, *msg, **kwargs)
def alert(self, *msg, **kwargs):
self._log(logging.CRITICAL, *msg, **kwargs)
@on_try_except_finally(on_finally=(exit, 1))
def fatal(self, *msg, **kwargs):
self._log(logging.CRITICAL, *msg, **kwargs)
def mute(self):
self._muted = True
def unmute(self):
self._muted = False
class PythonDLogger(object):
def __init__(
self,
logger_name=PYTHON_D_LOG_NAME,
log_fmt=PYTHON_D_LOG_LINE_FORMAT,
):
self.logger = BaseLogger(logger_name, log_fmt=log_fmt)
self.module_name = 'plugin'
self.job_name = 'main'
_LOG_TRACEBACK = False
@property
def log_traceback(self):
return PythonDLogger._LOG_TRACEBACK
@log_traceback.setter
def log_traceback(self, value):
PythonDLogger._LOG_TRACEBACK = value
def debug(self, *msg):
self.logger.debug(*msg, extra={
'module_name': self.module_name,
'job_name': self.job_name or self.module_name,
})
def info(self, *msg):
self.logger.info(*msg, extra={
'module_name': self.module_name,
'job_name': self.job_name or self.module_name,
})
def warning(self, *msg):
self.logger.warning(*msg, extra={
'module_name': self.module_name,
'job_name': self.job_name or self.module_name,
})
@add_traceback
def error(self, *msg):
self.logger.error(*msg, extra={
'module_name': self.module_name,
'job_name': self.job_name or self.module_name,
})
@add_traceback
def alert(self, *msg):
self.logger.alert(*msg, extra={
'module_name': self.module_name,
'job_name': self.job_name or self.module_name,
})
def fatal(self, *msg):
self.logger.fatal(*msg, extra={
'module_name': self.module_name,
'job_name': self.job_name or self.module_name,
})
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