Merge "Add drivers list generator"

tools/generate_driver_list.py

@@ -0,0 +1,52 @@
+#! /usr/bin/env python
+#
+#    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.
+
+"""Generate list of cinder drivers"""
+
+import importlib
+import inspect
+import pkgutil
+import pprint
+
+from cinder.volume import drivers
+from cinder.volume import driver
+
+package = drivers
+
+
+def get_driver_list():
+    dr_list = []
+    for _loader, modname, _ispkg in pkgutil.walk_packages(
+            path=package.__path__,
+            prefix=package.__name__ + '.',
+            onerror=lambda x: None):
+        try:
+            mod = importlib.import_module(modname)
+            list_classes = inspect.getmembers(mod, inspect.isclass)
+            dr_list += [
+                modname + '.' + dr_name for dr_name, dr in list_classes
+                if driver.BaseVD in inspect.getmro(dr)]
+        except ImportError:
+            print("%s module ignored!!" % modname)
+    return dr_list
+
+
+def main():
+    dr_list = get_driver_list()
+    print("Drivers list:")
+    pprint.pprint(dr_list)
+
+
+if __name__ == '__main__':
+    main()

tox.ini

@@ -124,6 +124,11 @@ commands = {posargs}
 [testenv:docs]
 commands = python setup.py build_sphinx
 
+[testenv:gendriverlist]
+sitepackages = False
+envdir = {toxworkdir}/venv
+commands = python {toxinidir}/tools/generate_driver_list.py
+
 [flake8]
 # Following checks are ignored on purpose.
 #