Include CommonConfigOpts options in sample config

Options defined by CommonConfigOpts are declared within the class rather
than at module level, so they weren't being included in the sample conf.

Also, in essex (and up until commit 991614a), the sample conf file
didn't contain these options but they included the hyphen in the name.
The hyphen is only used on the command line, it is converted to an
underscore automatically in the config file. Use opt.dest rather than
opt.name as the config file key. Fixes bug #1034970.

DocImpact: update nova.conf docs
Change-Id: Ia7f3dded9148deedeb198c19a8d343db6dd93f99

etc/nova/nova.conf.sample

@@ -4,6 +4,44 @@
 
 [DEFAULT]
 
+######## defined in nova.openstack.common.cfg:CommonConfigOpts ########
+
+# debug=false
+#### (BoolOpt) Print debugging output
+
+# verbose=false
+#### (BoolOpt) Print more verbose output
+
+# log_config=<None>
+#### (StrOpt) If this option is specified, the logging configuration file
+####          specified is used and overrides any other logging options
+####          specified. Please see the Python logging module
+####          documentation for details on logging configuration files.
+
+# log_format=%(asctime)s %(levelname)8s [%(name)s] %(message)s
+#### (StrOpt) A logging.Formatter log message format string which may use
+####          any of the available logging.LogRecord attributes. Default:
+####          %default
+
+# log_date_format=%Y-%m-%d %H:%M:%S
+#### (StrOpt) Format string for %(asctime)s in log records. Default:
+####          %default
+
+# log_file=<None>
+#### (StrOpt) (Optional) Name of log file to output to. If not set,
+####          logging will go to stdout.
+
+# log_dir=<None>
+#### (StrOpt) (Optional) The directory to keep log files in (will be
+####          prepended to --logfile)
+
+# use_syslog=false
+#### (BoolOpt) Use syslog for logging.
+
+# syslog_log_facility=LOG_USER
+#### (StrOpt) syslog facility to receive log lines
+
+
 ######## defined in nova.crypto ########
 
 # ca_file=cacert.pem
@@ -1908,4 +1946,4 @@
 ####          beprepared. Maximum value is 600 seconds (10 minutes).
 
 
-# Total option count: 500
+# Total option count: 509

tools/conf/extract_opts.py

@@ -48,6 +48,8 @@
 def main(srcfiles):
     print '\n'.join(['#' * 20, '# nova.conf sample #', '#' * 20,
                      '', '[DEFAULT]', ''])
+    _list_opts(cfg.CommonConfigOpts,
+               cfg.__name__ + ':' + cfg.CommonConfigOpts.__name__)
     mods_by_pkg = dict()
     for filepath in srcfiles:
         pkg_name = filepath.split(os.sep)[3]
@@ -69,8 +71,6 @@ def main(srcfiles):
 
 
 def _print_module(mod_str):
-    global OPTION_COUNT
-    opts = list()
     mod_obj = None
     if mod_str.endswith('.__init__'):
         mod_str = mod_str[:mod_str.rfind(".")]
@@ -83,18 +83,23 @@ def _print_module(mod_str):
         return
     except Exception, e:
         return
-    for attr_str in dir(mod_obj):
-        attr_obj = getattr(mod_obj, attr_str)
+    _list_opts(mod_obj, mod_str)
+
+
+def _list_opts(obj, name):
+    opts = list()
+    for attr_str in dir(obj):
+        attr_obj = getattr(obj, attr_str)
         if isinstance(attr_obj, cfg.Opt):
             opts.append(attr_obj)
         elif (isinstance(attr_obj, list) and
               all(map(lambda x: isinstance(x, cfg.Opt), attr_obj))):
             opts.extend(attr_obj)
-    # NOTE(lzyeval): return if module has no options
     if not opts:
         return
+    global OPTION_COUNT
     OPTION_COUNT += len(opts)
-    print '######## defined in %s ########\n' % mod_str
+    print '######## defined in %s ########\n' % name
     for opt in opts:
         _print_opt(opt)
     print
@@ -114,7 +119,7 @@ def _wrap(msg, indent):
 
 
 def _print_opt(opt):
-    opt_name, opt_default, opt_help = opt.name, opt.default, opt.help
+    opt_name, opt_default, opt_help = opt.dest, opt.default, opt.help
     if not opt_help:
         sys.stderr.write('WARNING: "%s" is missing help string.\n' % opt_name)
     opt_type = None