5 import logging, logging.handlers
7 CRITICAL=logging.CRITICAL
9 WARNING=logging.WARNING
13 # a logger that can handle tracebacks
15 def __init__ (self,logfile=None,loggername=None,level=logging.INFO):
16 # default is to locate loggername from the logfile if avail.
19 #handler=logging.StreamHandler()
20 #handler.setFormatter(logging.Formatter("%(levelname)s %(message)s"))
21 logfile = "/var/log/sfa.log"
24 loggername=os.path.basename(logfile)
26 handler=logging.handlers.RotatingFileHandler(logfile,maxBytes=1000000, backupCount=5)
28 # This is usually a permissions error becaue the file is
29 # owned by root, but httpd is trying to access it.
30 tmplogfile=os.getenv("TMPDIR", "/tmp") + os.path.sep + os.path.basename(logfile)
31 handler=logging.handlers.RotatingFileHandler(tmplogfile,maxBytes=1000000, backupCount=5)
32 handler.setFormatter(logging.Formatter("%(asctime)s - %(levelname)s - %(message)s"))
33 self.logger=logging.getLogger(loggername)
34 self.logger.setLevel(level)
35 # check if logger already has the handler we're about to add
36 handler_exists = False
37 for l_handler in self.logger.handlers:
38 if l_handler.baseFilename == handler.baseFilename and \
39 l_handler.level == handler.level:
42 if not handler_exists:
43 self.logger.addHandler(handler)
45 self.loggername=loggername
47 def setLevel(self,level):
48 self.logger.setLevel(level)
50 # shorthand to avoid having to import logging all over the place
51 def setLevelDebug(self):
52 self.logger.setLevel(logging.DEBUG)
54 # define a verbose option with s/t like
55 # parser.add_option("-v", "--verbose", action="count", dest="verbose", default=0)
56 # and pass the coresponding options.verbose to this method to adjust level
57 def setLevelFromOptVerbose(self,verbose):
59 self.logger.setLevel(logging.WARNING)
61 self.logger.setLevel(logging.INFO)
63 self.logger.setLevel(logging.DEBUG)
70 self.logger.debug(msg)
75 # some code is using logger.warn(), some is using logger.warning()
76 def warning(self, msg):
77 self.logger.warning(msg)
80 self.logger.error(msg)
82 def critical(self, msg):
83 self.logger.critical(msg)
85 # logs an exception - use in an except statement
86 def log_exc(self,message):
87 self.error("%s BEG TRACEBACK"%message+"\n"+traceback.format_exc().strip("\n"))
88 self.error("%s END TRACEBACK"%message)
90 def log_exc_critical(self,message):
91 self.critical("%s BEG TRACEBACK"%message+"\n"+traceback.format_exc().strip("\n"))
92 self.critical("%s END TRACEBACK"%message)
94 # for investigation purposes, can be placed anywhere
95 def log_stack(self,message):
96 to_log="".join(traceback.format_stack())
97 self.debug("%s BEG STACK"%message+"\n"+to_log)
98 self.debug("%s END STACK"%message)
100 def enable_console(self, stream=sys.stdout):
101 formatter = logging.Formatter("%(message)s")
102 handler = logging.StreamHandler(stream)
103 handler.setFormatter(formatter)
104 self.logger.addHandler(handler)
107 info_logger = _SfaLogger(loggername='info', level=logging.INFO)
108 debug_logger = _SfaLogger(loggername='debug', level=logging.DEBUG)
109 warn_logger = _SfaLogger(loggername='warning', level=logging.WARNING)
110 error_logger = _SfaLogger(loggername='error', level=logging.ERROR)
111 critical_logger = _SfaLogger(loggername='critical', level=logging.CRITICAL)
113 sfi_logger = _SfaLogger(logfile=os.path.expanduser("~/.sfi/")+'sfi.log',loggername='sfilog', level=logging.DEBUG)
114 ########################################
119 Prints the runtime of the specified callable. Use as a decorator, e.g.,
125 def logger_profile(callable):
126 def wrapper(*args, **kwds):
128 result = callable(*args, **kwds)
130 args = map(str, args)
131 args += ["%s = %s" % (name, str(value)) for (name, value) in kwds.iteritems()]
132 # should probably use debug, but then debug is not always enabled
133 logger.info("PROFILED %s (%s): %.02f s" % (callable.__name__, ", ".join(args), end - start))
136 return logger_profile
139 if __name__ == '__main__':
140 print 'testing sfalogging into logger.log'
141 logger=_SfaLogger('logger.log')
142 logger2=_SfaLogger('logger.log', level=logging.DEBUG)
143 logger3=_SfaLogger('logger.log', level=logging.ERROR)
144 print logger.logger.handlers
146 logger.critical("logger.critical")
147 logger.error("logger.error")
148 logger.warn("logger.warning")
149 logger.info("logger.info")
150 logger.debug("logger.debug")
151 logger.setLevel(logging.DEBUG)
152 logger.debug("logger.debug again")
156 def sleep(seconds = 1):
159 logger.info('console.info')
161 logger.setLevel(logging.DEBUG)