Added ability to generate config file

To generate use tox -e genconfig

Change-Id: Ie2065f822991bf308805de7788712cdc7b31d1dc

files/novajoin-config-generator.conf

@@ -0,0 +1,8 @@
+[DEFAULT]
+output_file = files/join.conf.sample
+wrap_width = 79
+namespace = novajoin
+namespace = novajoin-auth
+namespace = oslo.log
+
+

novajoin/config.py

@@ -12,6 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import itertools
 import os
 
 from oslo_config import cfg
@@ -105,3 +106,12 @@ def find_config_files():
 CONF = cfg.CONF
 CONF.register_opts(service_opts)
 log.register_options(CONF)
+
+
+def list_opts():
+    return [
+        ('DEFAULT',
+            itertools.chain(
+                service_opts,
+            )),
+    ]

novajoin/keystone_client.py

@@ -63,6 +63,12 @@ def register_keystoneauth_opts(conf):
         })
 
 
+def list_keystoneauth_opts():
+    return [('service_credentials', (
+            ks_loading.get_auth_common_conf_options() +
+            ks_loading.get_auth_plugin_conf_options('password')))]
+
+
 def get_project_name(project_id):
     """Given a keystone project-id return the name of the project."""
     # Handle case where no credentials are configured

novajoin/middleware/config.py

@@ -0,0 +1,48 @@
+# Copyright 2016 Red Hat, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+
+from oslo_middleware import cors
+
+
+def set_config_defaults():
+    """This method updates all configuration default values."""
+    set_cors_middleware_defaults()
+
+
+def set_cors_middleware_defaults():
+    """Update default configuration options for oslo.middleware."""
+    cors.set_defaults(
+        allow_headers=['Content-MD5',
+                       'X-Image-Meta-Checksum',
+                       'X-Storage-Token',
+                       'Accept-Encoding',
+                       'X-Auth-Token',
+                       'X-Identity-Status',
+                       'X-Roles',
+                       'X-Service-Catalog',
+                       'X-User-Id',
+                       'X-Tenant-Id',
+                       'X-OpenStack-Request-ID'],
+        expose_headers=['X-Image-Meta-Checksum',
+                        'X-Auth-Token',
+                        'X-Subject-Token',
+                        'X-Service-Token',
+                        'X-OpenStack-Request-ID'],
+        allow_methods=['GET',
+                       'PUT',
+                       'POST',
+                       'DELETE',
+                       'PATCH']
+    )

setup.cfg

@@ -57,3 +57,12 @@ universal = 1
 [pbr]
 skip_authors = True
 skip_changelog = True
+
+[entry_points]
+oslo.config.opts =
+    novajoin = novajoin.config:list_opts
+    novajoin-auth = novajoin.keystone_client:list_keystoneauth_opts
+
+oslo.config.opts.defaults =
+    novajoin = novajoin.middleware.config:set_config_defaults
+

tox.ini

@@ -60,3 +60,9 @@ commands = {posargs}
 
 [testenv:docs]
 commands = sphinx-build -W -b html doc/source doc/build/html
+
+[testenv:genconfig]
+sitepackages = False
+envdir = {toxworkdir}/pep8
+commands = oslo-config-generator --config-file=files/novajoin-config-generator.conf
+