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# -*- coding: utf-8 -*-
# Description:
# Author: Ilya Mashchenko (ilyam8)
# SPDX-License-Identifier: GPL-3.0-or-later
import logging
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
LOGGING_LEVELS = {'CRITICAL': 50,
'ERROR': 40,
'WARNING': 30,
'INFO': 20,
'DEBUG': 10,
'NOTSET': 0}
DEFAULT_LOG_LINE_FORMAT = '%(asctime)s: %(name)s %(levelname)s : %(message)s'
DEFAULT_LOG_TIME_FORMAT = '%Y-%m-%d %H:%M:%S'
PYTHON_D_LOG_LINE_FORMAT = '%(asctime)s: %(name)s %(levelname)s: %(module_name)s[%(job_name)s] : %(message)s'
PYTHON_D_LOG_NAME = 'python.d'
def limiter(log_max_count=30, allowed_in_seconds=60):
def on_decorator(func):
def on_call(*args):
current_time = args[0]._runtime_counters.start_mono
lc = args[0]._logger_counters
if lc.logged and lc.logged % log_max_count == 0:
if current_time - lc.time_to_compare <= allowed_in_seconds:
lc.dropped += 1
return
lc.time_to_compare = current_time
lc.logged += 1
func(*args)
return on_call
return on_decorator
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 LoggerCounters:
def __init__(self):
self.logged = 0
self.dropped = 0
self.time_to_compare = time()
def __repr__(self):
return 'LoggerCounter(logged: {logged}, dropped: {dropped})'.format(logged=self.logged,
dropped=self.dropped)
class BaseLogger(object):
def __init__(self, logger_name, log_fmt=DEFAULT_LOG_LINE_FORMAT, date_fmt=DEFAULT_LOG_TIME_FORMAT,
handler=logging.StreamHandler):
"""
:param logger_name: <str>
:param log_fmt: <str>
:param date_fmt: <str>
:param handler: <logging handler>
"""
self.logger = logging.getLogger(logger_name)
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):
"""
:param fmt: <str>
:param date_fmt: <str>
:return:
"""
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):
"""
:param level: <str> or <int>
:return:
"""
if level in LOGGING_LEVELS:
self.logger.setLevel(LOGGING_LEVELS[level])
def debug(self, *msg, **kwargs):
self.logger.debug(' '.join(map(str, msg)), **kwargs)
def info(self, *msg, **kwargs):
self.logger.info(' '.join(map(str, msg)), **kwargs)
def warning(self, *msg, **kwargs):
self.logger.warning(' '.join(map(str, msg)), **kwargs)
def error(self, *msg, **kwargs):
self.logger.error(' '.join(map(str, msg)), **kwargs)
def alert(self, *msg, **kwargs):
self.logger.critical(' '.join(map(str, msg)), **kwargs)
@on_try_except_finally(on_finally=(exit, 1))
def fatal(self, *msg, **kwargs):
self.logger.critical(' '.join(map(str, msg)), **kwargs)
class PythonDLogger(object):
def __init__(self, logger_name=PYTHON_D_LOG_NAME, log_fmt=PYTHON_D_LOG_LINE_FORMAT):
"""
:param logger_name: <str>
:param log_fmt: <str>
"""
self.logger = BaseLogger(logger_name, log_fmt=log_fmt)
self.module_name = 'plugin'
self.job_name = 'main'
self._logger_counters = LoggerCounters()
_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})
class PythonDLimitedLogger(PythonDLogger):
@limiter()
def info(self, *msg):
PythonDLogger.info(self, *msg)
@limiter()
def warning(self, *msg):
PythonDLogger.warning(self, *msg)
@limiter()
def error(self, *msg):
PythonDLogger.error(self, *msg)
@limiter()
def alert(self, *msg):
PythonDLogger.alert(self, *msg)
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