mirror of
https://github.com/clinton-hall/nzbToMedia.git
synced 2025-07-06 05:01:10 -07:00
285 lines
8.9 KiB
Python
285 lines
8.9 KiB
Python
# coding=utf-8
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from __future__ import with_statement
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import os
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import sys
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import threading
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import logging
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import core
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# number of log files to keep
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NUM_LOGS = 3
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# log size in bytes
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LOG_SIZE = 10000000 # 10 megs
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ERROR = logging.ERROR
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WARNING = logging.WARNING
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MESSAGE = logging.INFO
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DEBUG = logging.DEBUG
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POSTPROCESS = 21
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DB = 5
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reverseNames = {u'ERROR': ERROR,
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u'WARNING': WARNING,
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u'INFO': MESSAGE,
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u'DEBUG': DEBUG,
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u'POSTPROCESS': POSTPROCESS,
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u'DB': DB}
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class NTMRotatingLogHandler(object):
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def __init__(self, log_file, num_files, num_bytes):
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self.num_files = num_files
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self.num_bytes = num_bytes
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self.log_file = log_file
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self.log_file_path = log_file
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self.cur_handler = None
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self.writes_since_check = 0
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self.console_logging = True
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self.log_lock = threading.Lock()
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def close_log(self, handler=None):
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if not handler:
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handler = self.cur_handler
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if handler:
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ntm_logger = logging.getLogger('nzbtomedia')
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pp_logger = logging.getLogger('postprocess')
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db_logger = logging.getLogger('db')
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ntm_logger.removeHandler(handler)
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pp_logger.removeHandler(handler)
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db_logger.removeHandler(handler)
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handler.flush()
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handler.close()
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def initLogging(self, consoleLogging=True):
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if consoleLogging:
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self.console_logging = consoleLogging
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old_handler = None
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# get old handler in case we want to close it
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if self.cur_handler:
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old_handler = self.cur_handler
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else:
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# Add a new logging levels
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logging.addLevelName(21, 'POSTPROCESS')
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logging.addLevelName(5, 'DB')
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# only start consoleLogging on first initialize
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if self.console_logging:
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# define a Handler which writes INFO messages or higher to the sys.stderr
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console = logging.StreamHandler()
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# log-level
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console.setLevel(DB)
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# set a format which is simpler for console use
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console.setFormatter(DispatchingFormatter(
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{'nzbtomedia': logging.Formatter('[%(asctime)s] [%(levelname)s]::%(message)s', '%H:%M:%S'),
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'postprocess': logging.Formatter('[%(asctime)s] [%(levelname)s]::%(message)s', '%H:%M:%S'),
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'db': logging.Formatter('[%(asctime)s] [%(levelname)s]::%(message)s', '%H:%M:%S')
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},
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logging.Formatter('%(message)s'), ))
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# add the handler to the root logger
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logging.getLogger('nzbtomedia').addHandler(console)
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logging.getLogger('postprocess').addHandler(console)
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logging.getLogger('db').addHandler(console)
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self.log_file_path = os.path.join(core.LOG_DIR, self.log_file)
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self.cur_handler = self._config_handler()
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logging.getLogger('nzbtomedia').addHandler(self.cur_handler)
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logging.getLogger('postprocess').addHandler(self.cur_handler)
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logging.getLogger('db').addHandler(self.cur_handler)
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logging.getLogger('nzbtomedia').setLevel(logging.DEBUG)
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logging.getLogger('postprocess').setLevel(POSTPROCESS)
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logging.getLogger('db').setLevel(DB)
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# already logging in new log folder, close the old handler
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if old_handler:
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self.close_log(old_handler)
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def _config_handler(self):
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"""
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Configure a file handler to log at file_name and return it.
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"""
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file_handler = logging.FileHandler(self.log_file_path, encoding='utf-8')
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file_handler.setLevel(DB)
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file_handler.setFormatter(DispatchingFormatter(
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{'nzbtomedia': logging.Formatter('%(asctime)s %(levelname)-8s::%(message)s', '%Y-%m-%d %H:%M:%S'),
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'postprocess': logging.Formatter('%(asctime)s %(levelname)-8s::%(message)s', '%Y-%m-%d %H:%M:%S'),
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'db': logging.Formatter('%(asctime)s %(levelname)-8s::%(message)s', '%Y-%m-%d %H:%M:%S')
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},
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logging.Formatter('%(message)s'), ))
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return file_handler
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def _log_file_name(self, i):
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"""
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Returns a numbered log file name depending on i. If i==0 it just uses logName, if not it appends
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it to the extension (blah.log.3 for i == 3)
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i: Log number to ues
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"""
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return self.log_file_path + ('.' + str(i) if i else '')
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def _num_logs(self):
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"""
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Scans the log folder and figures out how many log files there are already on disk
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Returns: The number of the last used file (eg. mylog.log.3 would return 3). If there are no logs it returns -1
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"""
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cur_log = 0
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while os.path.isfile(self._log_file_name(cur_log)):
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cur_log += 1
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return cur_log - 1
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def _rotate_logs(self):
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ntm_logger = logging.getLogger('nzbtomedia')
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pp_logger = logging.getLogger('postprocess')
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db_logger = logging.getLogger('db')
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# delete the old handler
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if self.cur_handler:
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self.close_log()
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# rename or delete all the old log files
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for i in range(self._num_logs(), -1, -1):
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cur_file_name = self._log_file_name(i)
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try:
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if i >= NUM_LOGS:
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os.remove(cur_file_name)
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else:
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os.rename(cur_file_name, self._log_file_name(i + 1))
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except OSError:
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pass
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# the new log handler will always be on the un-numbered .log file
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new_file_handler = self._config_handler()
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self.cur_handler = new_file_handler
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ntm_logger.addHandler(new_file_handler)
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pp_logger.addHandler(new_file_handler)
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db_logger.addHandler(new_file_handler)
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def log(self, toLog, logLevel=MESSAGE, section='MAIN'):
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with self.log_lock:
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# check the size and see if we need to rotate
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if self.writes_since_check >= 10:
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if os.path.isfile(self.log_file_path) and os.path.getsize(self.log_file_path) >= LOG_SIZE:
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self._rotate_logs()
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self.writes_since_check = 0
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else:
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self.writes_since_check += 1
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try:
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message = u"%s: %s" % (str(section).upper(), toLog)
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except:
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message = u"%s: Message contains non-utf-8 string" % (str(section).upper())
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out_line = message
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ntm_logger = logging.getLogger('nzbtomedia')
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pp_logger = logging.getLogger('postprocess')
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db_logger = logging.getLogger('db')
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setattr(pp_logger, 'postprocess', lambda *args: pp_logger.log(POSTPROCESS, *args))
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setattr(db_logger, 'db', lambda *args: db_logger.log(DB, *args))
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try:
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if logLevel == DEBUG:
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if core.LOG_DEBUG == 1:
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ntm_logger.debug(out_line)
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elif logLevel == MESSAGE:
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ntm_logger.info(out_line)
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elif logLevel == WARNING:
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ntm_logger.warning(out_line)
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elif logLevel == ERROR:
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ntm_logger.error(out_line)
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elif logLevel == POSTPROCESS:
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pp_logger.postprocess(out_line)
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elif logLevel == DB:
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if core.LOG_DB == 1:
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db_logger.db(out_line)
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else:
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ntm_logger.info(logLevel, out_line)
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except ValueError:
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pass
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def log_error_and_exit(self, error_msg):
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log(error_msg, ERROR)
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if 'NZBOP_SCRIPTDIR' in os.environ:
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sys.exit(core.NZBGET_POSTPROCESS_ERROR)
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elif not self.console_logging:
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sys.exit(error_msg.encode(core.SYS_ENCODING, 'xmlcharrefreplace'))
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else:
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sys.exit(1)
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class DispatchingFormatter:
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def __init__(self, formatters, default_formatter):
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self._formatters = formatters
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self._default_formatter = default_formatter
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def format(self, record):
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formatter = self._formatters.get(record.name, self._default_formatter)
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return formatter.format(record)
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ntm_log_instance = NTMRotatingLogHandler(core.LOG_FILE, NUM_LOGS, LOG_SIZE)
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def log(toLog, logLevel=MESSAGE, section='MAIN'):
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ntm_log_instance.log(toLog, logLevel, section)
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def info(toLog, section='MAIN'):
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log(toLog, MESSAGE, section)
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def error(toLog, section='MAIN'):
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log(toLog, ERROR, section)
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def warning(toLog, section='MAIN'):
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log(toLog, WARNING, section)
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def debug(toLog, section='MAIN'):
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log(toLog, DEBUG, section)
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def postprocess(toLog, section='POSTPROCESS'):
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log(toLog, POSTPROCESS, section)
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def db(toLog, section='DB'):
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log(toLog, DB, section)
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def log_error_and_exit(error_msg):
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ntm_log_instance.log_error_and_exit(error_msg)
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def close():
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ntm_log_instance.close_log()
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