WSGI module was corrected

1. Deprecated SSL options were added.
2. Server class become derived from service.ServiceBase.
3. InvalidInput message was wrapped with log translator.

Change-Id: Id99b77a4f45998c158de7aa5f93f0f4afd9b5f7e

oslo_service/_options.py

@@ -80,11 +80,17 @@ wsgi_opts = [
 ssl_opts = [
     cfg.StrOpt('ca_file',
                help="CA certificate file to use to verify "
-                    "connecting clients."),
+                    "connecting clients.",
+               deprecated_group='DEFAULT',
+               deprecated_name='ssl_ca_file'),
     cfg.StrOpt('cert_file',
                help="Certificate file to use when starting "
-                    "the server securely."),
+                    "the server securely.",
+               deprecated_group='DEFAULT',
+               deprecated_name='ssl_cert_file'),
     cfg.StrOpt('key_file',
                help="Private key file to use when starting "
-                    "the server securely."),
+                    "the server securely.",
+               deprecated_group='DEFAULT',
+               deprecated_name='ssl_key_file'),
 ]

oslo_service/wsgi.py

@@ -33,6 +33,7 @@ import webob.exc
 
 from oslo_log import log as logging
 from oslo_service import _options
+from oslo_service import service
 from oslo_service import sslutils
 from oslo_service._i18n import _, _LE, _LI
 
@@ -45,12 +46,17 @@ def list_opts():
     return [(None, copy.deepcopy(_options.wsgi_opts))]
 
 
+def register_opts(conf):
+    """Registers WSGI config options."""
+    return conf.register_opts(_options.wsgi_opts)
+
+
 class InvalidInput(Exception):
     message = _("Invalid input received: "
                 "Unexpected argument for periodic task creation: %(arg)s.")
 
 
-class Server(object):
+class Server(service.ServiceBase):
     """Server class to manage a WSGI server, serving a WSGI application."""
 
     def __init__(self, conf, name, app, host='0.0.0.0', port=0, pool_size=None,
@@ -58,15 +64,19 @@ class Server(object):
                  use_ssl=False, max_url_len=None):
         """Initialize, but do not start, a WSGI server.
 
+        :param conf: Instance of ConfigOpts.
         :param name: Pretty name for logging.
         :param app: The WSGI application to serve.
         :param host: IP address to serve the application.
         :param port: Port number to server the application.
         :param pool_size: Maximum number of eventlets to spawn concurrently.
+        :param protocol: Protocol class.
         :param backlog: Maximum number of queued connections.
+        :param use_ssl: Wraps the socket in an SSL context if True.
         :param max_url_len: Maximum length of permitted URLs.
         :returns: None
         :raises: InvalidInput
+        :raises: EnvironmentError
         """
 
         self.conf = conf
@@ -86,10 +96,9 @@ class Server(object):
         self._use_ssl = use_ssl
         self._max_url_len = max_url_len
         self.client_socket_timeout = conf.client_socket_timeout or None
-        self.default_pool_size = conf.wsgi_default_pool_size
 
         if backlog < 1:
-            raise InvalidInput(reason='The backlog must be more than 0')
+            raise InvalidInput(reason=_('The backlog must be more than 0'))
 
         bind_addr = (host, port)
         # TODO(dims): eventlet's green dns/socket module does not actually