logger_example.py: Initial commit

Signed-off-by: Matthew Stidham <stidmatt@gmail.com>

py-scripts/sandbox/logger_example.py

@@ -0,0 +1,50 @@
+#!/usr/bin/python3
+
+import logging
+from random import choice
+
+
+class ContextFilter(logging.Filter):
+    """
+    This is a filter which injects contextual information into the log.
+
+    Rather than use actual contextual information, we just use random
+    data in this demo.
+    """
+
+    USERS = ['jim', 'fred', 'sheila']
+    IPS = ['123.231.231.123', '127.0.0.1', '192.168.0.1']
+
+    def filter(self, record):
+
+        record.ip = choice(ContextFilter.IPS)
+        record.user = choice(ContextFilter.USERS)
+        return True
+
+
+def main():
+    levels = (logging.DEBUG, logging.INFO, logging.WARNING, logging.ERROR, logging.CRITICAL)
+    logging.basicConfig(level=logging.DEBUG,
+                        format='%(asctime)-15s %(name)-5s %(levelname)-8s IP: %(ip)-15s User: %(user)-8s %(message)s')
+    a1 = logging.getLogger('a.b.c')
+    a2 = logging.getLogger('d.e.f')
+
+    logging.basicConfig(filename='example.log', level=logging.DEBUG)
+    logging.warning('this is a tutorial')
+    logging.info('It includes the basic logging functions')
+
+    logging.info("Don't include certain strings")
+    logging.info('define a filter')
+    f = ContextFilter()
+    a1.addFilter(f)
+    a2.addFilter(f)
+    a1.debug('A debug message')
+    a1.info('An info message with %s', 'some parameters')
+    for x in range(10):
+        lvl = choice(levels)
+        lvlname = logging.getLevelName(lvl)
+        a2.log(lvl, 'A message at %s level with %d %s', lvlname, 2, 'parameters')
+
+
+if __name__ == '__main__':
+    main()