Reference client for Bitmessage: a P2P encrypted decentralised communication protocol:
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

124 lines
4.1 KiB

# -*- coding: utf-8 -*-
'''
Logging and debuging facility
=============================
Levels:
DEBUG Detailed information, typically of interest only when diagnosing problems.
INFO Confirmation that things are working as expected.
WARNING An indication that something unexpected happened, or indicative of some problem in the
near future (e.g. ‘disk space low’). The software is still working as expected.
ERROR Due to a more serious problem, the software has not been able to perform some function.
CRITICAL A serious error, indicating that the program itself may be unable to continue running.
There are three loggers: `console_only`, `file_only` and `both`.
Use: `from debug import logger` to import this facility into whatever module you wish to log messages from.
Logging is thread-safe so you don't have to worry about locks, just import and log.
'''
import logging
import logging.config
import os
import shared
import sys
import traceback
import helper_startup
import state
helper_startup.loadConfig()
# Now can be overriden from a config file, which uses standard python logging.config.fileConfig interface
# examples are here: https://bitmessage.org/forum/index.php/topic,4820.msg11163.html#msg11163
log_level = 'WARNING'
def log_uncaught_exceptions(ex_cls, ex, tb):
logging.critical(''.join(traceback.format_tb(tb)))
logging.critical('{0}: {1}'.format(ex_cls, ex))
def configureLogging():
have_logging = False
try:
logging.config.fileConfig(os.path.join (state.appdata, 'logging.dat'))
have_logging = True
print "Loaded logger configuration from %s" % (os.path.join(state.appdata, 'logging.dat'))
except:
if os.path.isfile(os.path.join(state.appdata, 'logging.dat')):
print "Failed to load logger configuration from %s, using default logging config" % (os.path.join(state.appdata, 'logging.dat'))
print sys.exc_info()
else:
# no need to confuse the user if the logger config is missing entirely
print "Using default logger configuration"
sys.excepthook = log_uncaught_exceptions
if have_logging:
return False
logging.config.dictConfig({
'version': 1,
'formatters': {
'default': {
'format': '%(asctime)s - %(levelname)s - %(message)s',
},
},
'handlers': {
'console': {
'class': 'logging.StreamHandler',
'formatter': 'default',
'level': log_level,
'stream': 'ext://sys.stdout'
},
'file': {
'class': 'logging.handlers.RotatingFileHandler',
'formatter': 'default',
'level': log_level,
'filename': state.appdata + 'debug.log',
'maxBytes': 2097152, # 2 MiB
'backupCount': 1,
'encoding': 'UTF-8',
}
},
'loggers': {
'console_only': {
'handlers': ['console'],
'propagate' : 0
},
'file_only': {
'handlers': ['file'],
'propagate' : 0
},
'both': {
'handlers': ['console', 'file'],
'propagate' : 0
},
},
'root': {
'level': log_level,
'handlers': ['console'],
},
})
return True
# TODO (xj9): Get from a config file.
#logger = logging.getLogger('console_only')
if configureLogging():
if '-c' in sys.argv:
logger = logging.getLogger('file_only')
else:
logger = logging.getLogger('both')
else:
logger = logging.getLogger('default')
def restartLoggingInUpdatedAppdataLocation():
global logger
for i in list(logger.handlers):
logger.removeHandler(i)
i.flush()
i.close()
if configureLogging():
if '-c' in sys.argv:
logger = logging.getLogger('file_only')
else:
logger = logging.getLogger('both')
else:
logger = logging.getLogger('default')