Merge "Fix get_driver_options"

cinder/tests/unit/test_interface.py

@@ -0,0 +1,59 @@
+# Copyright (c) 2019, Red Hat, Inc.
+# All Rights Reserved.
+#
+#    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.
+
+import mock
+
+from cinder.interface import util
+from cinder import test
+
+
+class GetDriversTestCase(test.TestCase):
+    def test_get_volume_drivers(self):
+        # Just ensure that it doesn't raise an exception
+        drivers = util.get_volume_drivers()
+        self.assertNotEqual(0, len(drivers))
+        for driver in drivers:
+            self.assertIsInstance(driver, util.DriverInfo)
+
+    @mock.patch('cinder.volume.drivers.lvm.LVMVolumeDriver.get_driver_options')
+    def test_get_volume_drivers_fail(self, driver_opt):
+        driver_opt.side_effect = ValueError
+        self.assertRaises(ValueError, util.get_volume_drivers)
+
+    def test_get_backup_drivers(self):
+        # Just ensure that it doesn't raise an exception
+        drivers = util.get_backup_drivers()
+        self.assertNotEqual(0, len(drivers))
+        for driver in drivers:
+            self.assertIsInstance(driver, util.DriverInfo)
+
+    @mock.patch('cinder.backup.drivers.ceph.CephBackupDriver.'
+                'get_driver_options')
+    def test_get_backup_drivers_fail(self, driver_opt):
+        driver_opt.side_effect = ValueError
+        self.assertRaises(ValueError, util.get_backup_drivers)
+
+    def test_get_fczm_drivers(self):
+        # Just ensure that it doesn't raise an exception
+        drivers = util.get_fczm_drivers()
+        self.assertNotEqual(0, len(drivers))
+        for driver in drivers:
+            self.assertIsInstance(driver, util.DriverInfo)
+
+    @mock.patch('cinder.zonemanager.drivers.cisco.cisco_fc_zone_driver.'
+                'CiscoFCZoneDriver.get_driver_options')
+    def test_get_fczm_drivers_fail(self, driver_opt):
+        driver_opt.side_effect = ValueError
+        self.assertRaises(ValueError, util.get_fczm_drivers)

cinder/volume/driver.py

@@ -562,6 +562,7 @@ class BaseVD(object):
     def check_for_setup_error(self):
         return
 
+    @staticmethod
     def get_driver_options():
         """Return the oslo_config options specific to the driver."""
         return volume_opts

cinder/volume/drivers/infortrend/infortrend_fc_cli.py

@@ -39,6 +39,11 @@ class InfortrendCLIFCDriver(driver.FibreChannelDriver):
             'FC', configuration=self.configuration)
         self.VERSION = self.common.VERSION
 
+    @staticmethod
+    def get_driver_options():
+        """Return the oslo_config options specific to the driver."""
+        return common_cli.infortrend_opts
+
     def do_setup(self, context):
         """Any initialization the volume driver does while starting.
 

cinder/volume/drivers/infortrend/infortrend_iscsi_cli.py

@@ -38,6 +38,11 @@ class InfortrendCLIISCSIDriver(driver.ISCSIDriver):
             'iSCSI', configuration=self.configuration)
         self.VERSION = self.common.VERSION
 
+    @staticmethod
+    def get_driver_options():
+        """Return the oslo_config options specific to the driver."""
+        return common_cli.infortrend_opts
+
     def do_setup(self, context):
         """Any initialization the volume driver does while starting.
 

cinder/volume/drivers/macrosan/driver.py

@@ -182,6 +182,11 @@ class MacroSANBaseDriver(driver.VolumeDriver):
 
         self.initialize_iscsi_info()
 
+    @staticmethod
+    def get_driver_options():
+        """Return the oslo_config options specific to the driver."""
+        return config.macrosan_opts
+
     @property
     def _self_node_wwns(self):
         return []

doc/source/contributor/drivers.rst

@@ -35,6 +35,23 @@ There are some basic attributes that all drivers classes should have:
 
 The tooling system will also use the name and docstring of the driver class.
 
+Configuration options
+---------------------
+
+Each driver requires different configuration options set in the cinder.conf
+file to operate, and due to the complexities of the Object Oriented programming
+mechanisms (inheritance, composition, overwriting, etc.) once your driver
+defines its parameters in the code Cinder has no automated way of telling which
+configuration options are relevant to your driver.
+
+In order to assist operators and installation tools we recommend reporting the
+relevant options:
+
+* For operators: In the documentation under
+  ``doc/source/configuration/block-storage``.
+* For operators and installers: Through the ``get_driver_options`` static
+  method returning that returns a list of all the Oslo Config parameters.
+
 Minimum Features
 ----------------