Start implementing logging

TODO

@@ -6,5 +6,4 @@ Limit hits/pages/downloads by rate
 Automatic tests
 Add Licence
 Free memory as soon as possible
-gzip output files
 different debug output levels

iwla.py

@@ -9,6 +9,7 @@ import pickle
 import gzip
 import importlib 
 import argparse
+import logging
 from calendar import monthrange
 from datetime import date
 
@@ -127,6 +128,12 @@ class IWLA(object):
                         (conf.POST_HOOK_DIRECTORY    , conf.post_analysis_hooks),
                         (conf.DISPLAY_HOOK_DIRECTORY , conf.display_hooks)]
 
+        self.logger = logging.getLogger('iwla')
+        self.logger.setFormatter(logging.Formatter('%(name)s %(message)s'))
+
+    def setLoggerLevel(self, level):
+        self.logger.setLevel(level)
+
     def getVersion(self):
         return IWLA.IWLA_VERSION
 
@@ -651,6 +658,10 @@ if __name__ == '__main__':
     parser.add_argument('-f', '--file', dest='file',
                         help='Analyse this log file')
 
+    parser.add_argument('-d', '--log-level', dest='loglevel',
+                        default=logging.INFO,
+                        help='Loglevel')
+
     args = parser.parse_args()
 
     if args.clean_output:
@@ -659,6 +670,12 @@ if __name__ == '__main__':
 
     iwla = IWLA()
 
+    numeric_level = getattr(logging, args.loglevel.upper(), None)
+    if not isinstance(numeric_level, int):
+        raise ValueError('Invalid log level: %s' % (args.loglevel))
+
+    iwla.setLoggerLevel(numeric_level)
+    
     required_conf = ['analyzed_filename', 'domain_name']
     if not validConfRequirements(required_conf, iwla, 'Main Conf'):
         sys.exit(0)