Enable nxos-installos syslog (#35)

* Added ability to log to syslog for nxos-installos script

* uprev setup.py

bin/nxos-installos

@@ -9,8 +9,8 @@ import sys
 import os
 import json
 import argparse
-import yaml
 import logging
+import logging.handlers
 
 import aeon.nxos as nxos
 from aeon.nxos.exceptions import NxosException
@@ -50,10 +50,17 @@ psr.add_argument(
     '--md5sum', required=True,
     help='MD5 checksum value')
 
-psr.add_argument(
+log_group = psr.add_mutually_exclusive_group()
+log_group.add_argument(
     '--logfile',
     help='name of log file')
 
+log_group.add_argument(
+    '--syslog',
+    action='store_true',
+    help='If set, log to syslog.'
+)
+
 # ##### -------------------------
 # ##### authentication
 # ##### -------------------------
@@ -75,35 +82,27 @@ group.add_argument(
 g_cli_args = psr.parse_args()
 
 
-def setup_logging(logname, logfile, target):
+def setup_logging(logname, target, syslog=False, logfile=None):
     log = logging.getLogger(name=logname)
     log.setLevel(logging.INFO)
 
     fmt = logging.Formatter(
-        '%(asctime)s:%(levelname)s:{target}:%(message)s'
-        .format(target=target))
-
-    handler = logging.FileHandler(logfile) if logfile else logging.StreamHandler(sys.stdout)
+        '%(name)s %(levelname)s {target}: %(message)s'.format(target=target))
+    if syslog:
+        handler = logging.handlers.SysLogHandler(address='/dev/log')
+    elif logfile:
+        handler = logging.FileHandler(logfile)
+    else:
+        handler = logging.StreamHandler(sys.stdout)
     handler.setFormatter(fmt)
     log.addHandler(handler)
     return log
 
 
 g_log = setup_logging(logname=_PROGNAME,
                       logfile=g_cli_args.logfile,
-                      target=g_cli_args.target)
-def setup_logging():
-    g_log.setLevel(logging.INFO)
-    fh = logging.FileHandler(g_cli_args.logfile)
-    fmt = logging.Formatter(
-        '%(asctime)s:%(levelname)s: {target}:%(message)s'
-        .format(target=g_cli_args.target))
-    fh.setFormatter(fmt)
-    g_log.addHandler(fh)
-
-if g_cli_args.logfile:
-    setup_logging()
-
+                      target=g_cli_args.target,
+                      syslog=g_cli_args.syslog)
 
 # ##### -----------------------------------------------------------------------
 # #####

setup.py

@@ -22,7 +22,7 @@ def requirements(filename):
 
 setup(
     name="aeon-venos",
-    version="0.9.6",
+    version="0.9.7",
     author="Jeremy Schulman",
     url='https://github.com/Apstra/aeon-venos',
     author_email="jeremy@apstra.com",