minor and harmless cosmetic changes
[sfa.git] / sfa / util / sfalogging.py
index 5dd17d0..434043f 100644 (file)
 #!/usr/bin/python
 
-import os, sys
+#----------------------------------------------------------------------
+# Copyright (c) 2008 Board of Trustees, Princeton University
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and/or hardware specification (the "Work") to
+# deal in the Work without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Work, and to permit persons to whom the Work
+# is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Work.
+#
+# THE WORK IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE WORK OR THE USE OR OTHER DEALINGS
+# IN THE WORK.
+#----------------------------------------------------------------------
+
+from __future__ import print_function
+
+import os
+import sys
 import traceback
-import logging, logging.handlers
+import logging
+import logging.handlers
+
+CRITICAL = logging.CRITICAL
+ERROR = logging.ERROR
+WARNING = logging.WARNING
+INFO = logging.INFO
+DEBUG = logging.DEBUG
+
+# a logger that can handle tracebacks
 
-CRITICAL=logging.CRITICAL
-ERROR=logging.ERROR
-WARNING=logging.WARNING
-INFO=logging.INFO
-DEBUG=logging.DEBUG
 
-# a logger that can handle tracebacks 
 class _SfaLogger:
-    def __init__ (self,logfile=None,loggername=None,level=logging.INFO):
+
+    def __init__(self, logfile=None, loggername=None, level=logging.INFO):
         # default is to locate loggername from the logfile if avail.
         if not logfile:
-            #loggername='console'
-            #handler=logging.StreamHandler()
+            # loggername='console'
+            # handler=logging.StreamHandler()
             #handler.setFormatter(logging.Formatter("%(levelname)s %(message)s"))
             logfile = "/var/log/sfa.log"
 
         if not loggername:
-            loggername=os.path.basename(logfile)
+            loggername = os.path.basename(logfile)
         try:
-            handler=logging.handlers.RotatingFileHandler(logfile,maxBytes=1000000, backupCount=5) 
+            handler = logging.handlers.RotatingFileHandler(
+                logfile, maxBytes=1000000, backupCount=5)
         except IOError:
-            # This is usually a permissions error becaue the file is
+            # This is usually a permissions error because the file is
             # owned by root, but httpd is trying to access it.
-            tmplogfile=os.getenv("TMPDIR", "/tmp") + os.path.sep + os.path.basename(logfile)
+            tmplogfile = os.path.join(os.getenv("TMPDIR",
+                                                os.getenv("TMP", os.path.normpath("/tmp"))),
+                                      os.path.basename(logfile))
+            tmplogfile = os.path.normpath(tmplogfile)
+
+            tmpdir = os.path.dirname(tmplogfile)
+            if tmpdir and tmpdir != "" and not os.path.exists(tmpdir):
+                os.makedirs(tmpdir)
+
             # In strange uses, 2 users on same machine might use same code,
             # meaning they would clobber each others files
             # We could (a) rename the tmplogfile, or (b)
             # just log to the console in that case.
             # Here we default to the console.
-            if os.path.exists(tmplogfile) and not os.access(tmplogfile,os.W_OK):
+            if os.path.exists(tmplogfile) and not os.access(tmplogfile, os.W_OK):
                 loggername = loggername + "-console"
                 handler = logging.StreamHandler()
             else:
-                handler=logging.handlers.RotatingFileHandler(tmplogfile,maxBytes=1000000, backupCount=5) 
-        handler.setFormatter(logging.Formatter("%(asctime)s - %(levelname)s - %(message)s"))
-        self.logger=logging.getLogger(loggername)
+                handler = logging.handlers.RotatingFileHandler(
+                    tmplogfile, maxBytes=1000000, backupCount=5)
+        handler.setFormatter(logging.Formatter(
+            "%(asctime)s - %(levelname)s - %(message)s"))
+        self.logger = logging.getLogger(loggername)
         self.logger.setLevel(level)
         # check if logger already has the handler we're about to add
         handler_exists = False
         for l_handler in self.logger.handlers:
             if l_handler.baseFilename == handler.baseFilename and \
                l_handler.level == handler.level:
-                handler_exists = True 
+                handler_exists = True
 
         if not handler_exists:
             self.logger.addHandler(handler)
 
-        self.loggername=loggername
+        self.loggername = loggername
 
-    def setLevel(self,level):
+    def setLevel(self, level):
         self.logger.setLevel(level)
 
     # shorthand to avoid having to import logging all over the place
     def setLevelDebug(self):
         self.logger.setLevel(logging.DEBUG)
 
+    def debugEnabled(self):
+        return self.logger.getEffectiveLevel() == logging.DEBUG
+
     # define a verbose option with s/t like
     # parser.add_option("-v", "--verbose", action="count", dest="verbose", default=0)
     # and pass the coresponding options.verbose to this method to adjust level
-    def setLevelFromOptVerbose(self,verbose):
-        if verbose==0:
+    def setLevelFromOptVerbose(self, verbose):
+        if verbose == 0:
             self.logger.setLevel(logging.WARNING)
-        elif verbose==1:
+        elif verbose == 1:
             self.logger.setLevel(logging.INFO)
-        elif verbose==2:
+        elif verbose >= 2:
             self.logger.setLevel(logging.DEBUG)
+    # in case some other code needs a boolean
+
+    def getBoolVerboseFromOpt(self, verbose):
+        return verbose >= 1
+
+    def getBoolDebugFromOpt(self, verbose):
+        return verbose >= 2
 
     ####################
     def info(self, msg):
@@ -77,34 +128,36 @@ class _SfaLogger:
 
     def debug(self, msg):
         self.logger.debug(msg)
-        
+
     def warn(self, msg):
         self.logger.warn(msg)
 
     # some code is using logger.warn(), some is using logger.warning()
     def warning(self, msg):
         self.logger.warning(msg)
-   
+
     def error(self, msg):
-        self.logger.error(msg)    
+        self.logger.error(msg)
+
     def critical(self, msg):
         self.logger.critical(msg)
 
     # logs an exception - use in an except statement
-    def log_exc(self,message):
-        self.error("%s BEG TRACEBACK"%message+"\n"+traceback.format_exc().strip("\n"))
-        self.error("%s END TRACEBACK"%message)
-    
-    def log_exc_critical(self,message):
-        self.critical("%s BEG TRACEBACK"%message+"\n"+traceback.format_exc().strip("\n"))
-        self.critical("%s END TRACEBACK"%message)
-    
+    def log_exc(self, message):
+        self.error("%s BEG TRACEBACK" % message + "\n" +
+                   traceback.format_exc().strip("\n"))
+        self.error("%s END TRACEBACK" % message)
+
+    def log_exc_critical(self, message):
+        self.critical("%s BEG TRACEBACK" % message + "\n" +
+                      traceback.format_exc().strip("\n"))
+        self.critical("%s END TRACEBACK" % message)
+
     # for investigation purposes, can be placed anywhere
-    def log_stack(self,message):
-        to_log="".join(traceback.format_stack())
-        self.debug("%s BEG STACK"%message+"\n"+to_log)
-        self.debug("%s END STACK"%message)
+    def log_stack(self, message):
+        to_log = "".join(traceback.format_stack())
+        self.info("%s BEG STACK" % message + "\n" + to_log)
+        self.info("%s END STACK" % message)
 
     def enable_console(self, stream=sys.stdout):
         formatter = logging.Formatter("%(message)s")
@@ -113,20 +166,18 @@ class _SfaLogger:
         self.logger.addHandler(handler)
 
 
-info_logger = _SfaLogger(loggername='info', level=logging.INFO)
-debug_logger = _SfaLogger(loggername='debug', level=logging.DEBUG)
-warn_logger = _SfaLogger(loggername='warning', level=logging.WARNING)
-error_logger = _SfaLogger(loggername='error', level=logging.ERROR)
-critical_logger = _SfaLogger(loggername='critical', level=logging.CRITICAL)
-logger = info_logger
-sfi_logger = _SfaLogger(logfile=os.path.expanduser("~/.sfi/")+'sfi.log',loggername='sfilog', level=logging.DEBUG)
+logger = _SfaLogger(loggername='info', level=logging.INFO)
+
+sfi_logger = _SfaLogger(logfile=os.path.expanduser("~/.sfi/") + 'sfi.log',
+                        loggername='sfilog', level=logging.DEBUG)
 ########################################
 import time
 
+
 def profile(logger):
     """
     Prints the runtime of the specified callable. Use as a decorator, e.g.,
-    
+
     @profile(logger)
     def foo(...):
         ...
@@ -137,36 +188,40 @@ def profile(logger):
             result = callable(*args, **kwds)
             end = time.time()
             args = map(str, args)
-            args += ["%s = %s" % (name, str(value)) for (name, value) in kwds.iteritems()]
+            args += ["%s = %s" % (name, str(value))
+                     for (name, value) in kwds.iteritems()]
             # should probably use debug, but then debug is not always enabled
-            logger.info("PROFILED %s (%s): %.02f s" % (callable.__name__, ", ".join(args), end - start))
+            logger.info("PROFILED %s (%s): %.02f s" %
+                        (callable.__name__, ", ".join(args), end - start))
             return result
         return wrapper
     return logger_profile
 
 
-if __name__ == '__main__': 
-    print 'testing sfalogging into logger.log'
-    logger=_SfaLogger('logger.log')
-    logger2=_SfaLogger('logger.log', level=logging.DEBUG)
-    logger3=_SfaLogger('logger.log', level=logging.ERROR)
-    print logger.logger.handlers
-   
-    logger.critical("logger.critical")
-    logger.error("logger.error")
-    logger.warn("logger.warning")
-    logger.info("logger.info")
-    logger.debug("logger.debug")
-    logger.setLevel(logging.DEBUG)
-    logger.debug("logger.debug again")
-    
+if __name__ == '__main__':
+    print('testing sfalogging into logger.log')
+    logger1 = _SfaLogger('logger.log', loggername='std(info)')
+    logger2 = _SfaLogger('logger.log', loggername='error', level=logging.ERROR)
+    logger3 = _SfaLogger('logger.log', loggername='debug', level=logging.DEBUG)
 
-    @profile(logger)
-    def sleep(seconds = 1):
-        time.sleep(seconds)
+    for logger, msg in ((logger1, "std(info)"), (logger2, "error"), (logger3, "debug")):
+
+        print("====================", msg, logger.logger.handlers)
+
+        logger.enable_console()
+        logger.critical("logger.critical")
+        logger.error("logger.error")
+        logger.warn("logger.warning")
+        logger.info("logger.info")
+        logger.debug("logger.debug")
+        logger.setLevel(logging.DEBUG)
+        logger.debug("logger.debug again")
 
-    logger.info('console.info')
-    sleep(0.5)
-    logger.setLevel(logging.DEBUG)
-    sleep(0.25)
+        @profile(logger)
+        def sleep(seconds=1):
+            time.sleep(seconds)
 
+        logger.info('console.info')
+        sleep(0.5)
+        logger.setLevel(logging.DEBUG)
+        sleep(0.25)