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SickRage/sickbeard/logger.py

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# Author: Nic Wolfe <nic@wolfeden.ca>
# URL: http://code.google.com/p/sickbeard/
#
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# This file is part of SickRage.
#
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# SickRage is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
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# SickRage is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
2014-05-23 08:37:22 -04:00
# along with SickRage. If not, see <http://www.gnu.org/licenses/>.
from __future__ import with_statement
import time
import os
import sys
import threading
import logging
import sickbeard
from sickbeard import classes
# number of log files to keep
NUM_LOGS = 3
# log size in bytes
LOG_SIZE = 10000000 # 10 megs
ERROR = logging.ERROR
WARNING = logging.WARNING
MESSAGE = logging.INFO
DEBUG = logging.DEBUG
DB = 5
reverseNames = {u'ERROR': ERROR,
u'WARNING': WARNING,
u'INFO': MESSAGE,
u'DEBUG': DEBUG,
u'DB': DB}
class SBRotatingLogHandler(object):
def __init__(self, log_file, num_files, num_bytes):
self.num_files = num_files
self.num_bytes = num_bytes
self.log_file = log_file
self.log_file_path = log_file
self.cur_handler = None
self.writes_since_check = 0
self.console_logging = False
self.log_lock = threading.Lock()
def close_log(self, handler=None):
if not handler:
handler = self.cur_handler
if handler:
sb_logger = logging.getLogger('sickbeard')
sub_logger = logging.getLogger('subliminal')
imdb_logger = logging.getLogger('imdbpy')
sb_logger.removeHandler(handler)
sub_logger.removeHandler(handler)
imdb_logger.removeHandler(handler)
handler.flush()
handler.close()
def initLogging(self, consoleLogging=False):
if consoleLogging:
self.console_logging = consoleLogging
old_handler = None
# get old handler in case we want to close it
if self.cur_handler:
old_handler = self.cur_handler
else:
#Add a new logging level DB
logging.addLevelName(5, 'DB')
# only start consoleLogging on first initialize
if self.console_logging:
# define a Handler which writes INFO messages or higher to the sys.stderr
console = logging.StreamHandler()
console.setLevel(logging.INFO)
if sickbeard.DEBUG:
console.setLevel(logging.DEBUG)
# set a format which is simpler for console use
console.setFormatter(DispatchingFormatter(
{'sickbeard': logging.Formatter('%(asctime)s %(levelname)s::%(message)s', '%H:%M:%S'),
'subliminal': logging.Formatter('%(asctime)s %(levelname)s::SUBLIMINAL :: %(message)s',
'%H:%M:%S'),
'imdbpy': logging.Formatter('%(asctime)s %(levelname)s::IMDBPY :: %(message)s', '%H:%M:%S')
},
logging.Formatter('%(message)s'), ))
# add the handler to the root logger
logging.getLogger('sickbeard').addHandler(console)
logging.getLogger('subliminal').addHandler(console)
logging.getLogger('imdbpy').addHandler(console)
self.log_file_path = os.path.join(sickbeard.LOG_DIR, self.log_file)
self.cur_handler = self._config_handler()
logging.getLogger('sickbeard').addHandler(self.cur_handler)
logging.getLogger('subliminal').addHandler(self.cur_handler)
logging.getLogger('imdbpy').addHandler(self.cur_handler)
logging.getLogger('sickbeard').setLevel(DB)
logging.getLogger('subliminal').setLevel(logging.WARNING)
logging.getLogger('imdbpy').setLevel(logging.WARNING)
# already logging in new log folder, close the old handler
if old_handler:
self.close_log(old_handler)
# old_handler.flush()
# old_handler.close()
# sb_logger = logging.getLogger('sickbeard')
# sub_logger = logging.getLogger('subliminal')
# imdb_logger = logging.getLogger('imdbpy')
# sb_logger.removeHandler(old_handler)
# subli_logger.removeHandler(old_handler)
# imdb_logger.removeHandler(old_handler)
def _config_handler(self):
"""
Configure a file handler to log at file_name and return it.
"""
file_handler = logging.FileHandler(self.log_file_path, encoding='utf-8')
file_handler.setLevel(DB)
file_handler.setFormatter(DispatchingFormatter(
{'sickbeard': logging.Formatter('%(asctime)s %(levelname)-8s %(message)s', '%Y-%m-%d %H:%M:%S'),
'subliminal': logging.Formatter('%(asctime)s %(levelname)-8s SUBLIMINAL :: %(message)s',
'%Y-%m-%d %H:%M:%S'),
'imdbpy': logging.Formatter('%(asctime)s %(levelname)-8s IMDBPY :: %(message)s', '%Y-%m-%d %H:%M:%S')
},
logging.Formatter('%(message)s'), ))
return file_handler
def _log_file_name(self, i):
"""
Returns a numbered log file name depending on i. If i==0 it just uses logName, if not it appends
it to the extension (blah.log.3 for i == 3)
i: Log number to ues
"""
return self.log_file_path + ('.' + str(i) if i else '')
def _num_logs(self):
"""
Scans the log folder and figures out how many log files there are already on disk
Returns: The number of the last used file (eg. mylog.log.3 would return 3). If there are no logs it returns -1
"""
cur_log = 0
while os.path.isfile(self._log_file_name(cur_log)):
cur_log += 1
return cur_log - 1
def _rotate_logs(self):
sb_logger = logging.getLogger('sickbeard')
sub_logger = logging.getLogger('subliminal')
imdb_logger = logging.getLogger('imdbpy')
# delete the old handler
if self.cur_handler:
self.close_log()
# rename or delete all the old log files
for i in range(self._num_logs(), -1, -1):
cur_file_name = self._log_file_name(i)
try:
if i >= NUM_LOGS:
os.remove(cur_file_name)
else:
os.rename(cur_file_name, self._log_file_name(i + 1))
except OSError:
pass
# the new log handler will always be on the un-numbered .log file
new_file_handler = self._config_handler()
self.cur_handler = new_file_handler
sb_logger.addHandler(new_file_handler)
sub_logger.addHandler(new_file_handler)
imdb_logger.addHandler(new_file_handler)
def log(self, toLog, logLevel=MESSAGE):
with self.log_lock:
# check the size and see if we need to rotate
if self.writes_since_check >= 10:
if os.path.isfile(self.log_file_path) and os.path.getsize(self.log_file_path) >= LOG_SIZE:
self._rotate_logs()
self.writes_since_check = 0
else:
self.writes_since_check += 1
meThread = threading.currentThread().getName()
message = meThread + u" :: " + toLog
out_line = message
sb_logger = logging.getLogger('sickbeard')
setattr(sb_logger, 'db', lambda *args: sb_logger.log(DB, *args))
sub_logger = logging.getLogger('subliminal')
imdb_logger = logging.getLogger('imdbpy')
try:
if logLevel == DEBUG:
sb_logger.debug(out_line)
elif logLevel == MESSAGE:
sb_logger.info(out_line)
elif logLevel == WARNING:
sb_logger.warning(out_line)
elif logLevel == ERROR:
sb_logger.error(out_line)
# add errors to the UI logger
classes.ErrorViewer.add(classes.UIError(message))
elif logLevel == DB:
sb_logger.db(out_line)
else:
sb_logger.log(logLevel, out_line)
except ValueError:
pass
def log_error_and_exit(self, error_msg):
log(error_msg, ERROR)
if not self.console_logging:
sys.exit(error_msg.encode(sickbeard.SYS_ENCODING, 'xmlcharrefreplace'))
else:
sys.exit(1)
class DispatchingFormatter:
def __init__(self, formatters, default_formatter):
self._formatters = formatters
self._default_formatter = default_formatter
def format(self, record):
formatter = self._formatters.get(record.name, self._default_formatter)
return formatter.format(record)
sb_log_instance = SBRotatingLogHandler('sickbeard.log', NUM_LOGS, LOG_SIZE)
def log(toLog, logLevel=MESSAGE):
sb_log_instance.log(toLog, logLevel)
def log_error_and_exit(error_msg):
sb_log_instance.log_error_and_exit(error_msg)
def close():
sb_log_instance.close_log()