add logging to a file as basis for recording read access

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2962 fd906abe-77d9-0310-91a1-e0d9ade77398

tracking/README.txt

@@ -140,3 +140,27 @@ Tracking Views
 
   >>> from cybertools.tracking.browser import TrackingStorageView
 
+
+Track Read Access via a Log File
+================================
+
+  >>> import os
+  >>> from cybertools.tracking.tests import testDir
+  >>> from cybertools.tracking.logfile import Logger
+
+  >>> logfile = os.path.join(testDir, 'test.log')
+  >>> logger = Logger('test', logfile)
+
+  >>> logger.log('Test message #1')
+  >>> logger.log('Test message #2')
+
+  >>> logger.doRollover()
+  >>> logger.log('Test message #3')
+
+
+Fin de partie
+=============
+
+  >>> for fn in os.listdir(testDir):
+  ...     if '.log' in fn:
+  ...         os.unlink(os.path.join(testDir, fn))

tracking/logfile.py

@@ -0,0 +1,64 @@
+#
+#  Copyright (c) 2008 Helmut Merz helmutm@cy55.de
+#
+#  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+"""
+Track user interactions by writing to a log file, loading the log at
+certain times collecting analysis results in a real tracking storage.
+
+$Id$
+"""
+
+import logging
+import os
+
+
+class Logger(object):
+
+    handler = None
+
+    def __init__(self, logname, logfile, logformat='%(asctime)s;%(message)s',
+                 **kw):
+        self.logname = logname
+        self.logfile = logfile
+        self.logformat = logformat
+        self.params = kw
+        self.setup()
+
+    def setup(self):
+        directory = os.path.dirname(self.logfile)
+        if not os.path.exists(directory):
+            os.makedirs(directory)
+        logger = logging.getLogger(self.logname)
+        self.handler = logging.handlers.RotatingFileHandler(self.logfile,
+                            backupCount=self.params.get('backupCount', 5),
+                            encoding='UTF-8')
+        formatter = logging.Formatter(self.logformat)
+        self.handler.setFormatter(formatter)
+        if not logger.handlers:
+            logger.addHandler(self.handler)
+        logger.setLevel(logging.INFO)
+
+    def log(self, message):
+        logging.getLogger(self.logname).info(message)
+
+    def doRollover(self):
+        if self.handler is not None:
+            self.handler.doRollover()
+
+
+loggers = {}

tracking/tests.py

@@ -1,9 +1,13 @@
 # $Id$
 
 import unittest, doctest
+import os
 from zope.testing.doctestunit import DocFileSuite
 
 
+testDir = os.path.join(os.path.dirname(__file__), 'testdata')
+
+
 class Test(unittest.TestCase):
     "Basic tests for the loops.track package."