Add quantum.exceptions path to configed ext paths

Change-Id: Ica9e1de290d963ef8919e15a242655f933df5b03

common/lib/quantum/common/extensions.py

@@ -26,6 +26,7 @@ import webob.exc
 from gettext import gettext as _
 from abc import ABCMeta
 from quantum.common import exceptions
+import quantum.extensions
 from quantum.manager import QuantumManager
 from quantum import wsgi
 
@@ -219,7 +220,7 @@ class ExtensionMiddleware(wsgi.Middleware):
 
         self.ext_mgr = (ext_mgr
                         or ExtensionManager(
-                config_params.get('api_extensions_path', '')))
+                        get_extensions_path(config_params)))
         mapper = routes.Mapper()
 
         # extended resources
@@ -336,7 +337,7 @@ class ExtensionMiddleware(wsgi.Middleware):
 def plugin_aware_extension_middleware_factory(global_config, **local_config):
     """Paste factory."""
     def _factory(app):
-        extensions_path = global_config.get('api_extensions_path', '')
+        extensions_path = get_extensions_path(global_config)
         ext_mgr = PluginAwareExtensionManager(extensions_path,
                                               QuantumManager.get_plugin())
         return ExtensionMiddleware(app, global_config, ext_mgr=ext_mgr)
@@ -532,3 +533,13 @@ class ResourceExtension(object):
         self.parent = parent
         self.collection_actions = collection_actions
         self.member_actions = member_actions
+
+
+# Returns the extention paths from a config entry and the __path__
+# of quantum.extensions
+def get_extensions_path(config=None):
+    paths = ':'.join(quantum.extensions.__path__)
+    if config:
+        paths = ':'.join([config.get('api_extensions_path', ''), paths])
+
+    return paths

server/etc/quantum.conf

@@ -14,7 +14,9 @@ bind_port = 9696
 # Path to the extensions.  Note that this can be a colon-separated list of
 # paths.  For example:
 # api_extensions_path = extensions:/path/to/more/extensions:/even/more/extensions
-api_extensions_path = extensions
+# The __path__ of quantum.extensions is appended to this, so if your
+# extensions are in there you don't need to specify them here
+api_extensions_path = server/lib/quantum/extensions
 
 [composite:quantum]
 use = egg:Paste#urlmap

server/lib/quantum/tests/unit/test_extensions.py

@@ -30,6 +30,7 @@ from quantum.tests.unit.extension_stubs import (StubExtension, StubPlugin,
                                         StubPluginInterface,
                                         StubBaseAppController,
                                         ExtensionExpectingPluginInterface)
+import quantum.tests.unit.extensions
 from quantum.common.extensions import (ExtensionManager,
                                        PluginAwareExtensionManager,
                                        ExtensionMiddleware)
@@ -37,7 +38,7 @@ from quantum.common.extensions import (ExtensionManager,
 LOG = logging.getLogger('test_extensions')
 
 test_conf_file = config.find_config_file({}, None, "quantum.conf.test")
-extensions_path = os.path.join(os.path.dirname(__file__), "extensions")
+extensions_path = ':'.join(quantum.tests.unit.extensions.__path__)
 
 
 class ExtensionsTestApp(wsgi.Router):