# Copyright (C) 2006-2014 Bastian Kleineidam
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""Logger for aggregator instances"""
import threading
import _thread
from ..decorators import synchronized
_lock = threading.Lock()
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class Logger:
"""Thread safe multi-logger class used by aggregator instances."""
def __init__(self, config):
"""Initialize basic logging variables."""
self.loggers = [config['logger']]
self.loggers.extend(config['fileoutput'])
self.verbose = config["verbose"]
self.warnings = config["warnings"]
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def start_log_output(self):
"""
Start output of all configured loggers.
"""
for logger in self.loggers:
logger.start_output()
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def end_log_output(self, **kwargs):
"""
End output of all configured loggers.
"""
for logger in self.loggers:
logger.end_output(**kwargs)
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def do_print(self, url_data):
"""Determine if URL entry should be logged or not."""
if self.verbose:
return True
if self.warnings and url_data.warnings:
return True
return not url_data.valid
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@synchronized(_lock)
def log_url(self, url_data):
"""Send new url to all configured loggers."""
self.check_active_loggers()
do_print = self.do_print(url_data)
# Only send a transport object to the loggers, not the complete
# object instance.
for log in self.loggers:
log.log_filter_url(url_data, do_print)
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@synchronized(_lock)
def log_internal_error(self):
"""Document that an internal error occurred."""
for logger in self.loggers:
logger.log_internal_error()
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def check_active_loggers(self):
"""Check if all loggers are deactivated due to I/O errors."""
for logger in self.loggers:
if logger.is_active:
break
else:
_thread.interrupt_main()