Rsdlib changed providing_pools interface

With the latest changes in the rsdlib in the RSD driver,
The _get_providing_pool(self, volume) method is returning
StoragePoolCollection instance, instead of StoragePool URL. Made
code changes and corresponding unit tests to address this changes

Change-Id: If7d24d2537deecd28400c120a23f3af172e92222
Closes-Bug: #1836121

cinder/tests/unit/volume/drivers/test_rsd.py

@@ -79,6 +79,7 @@ class RSDClientTestCase(test.TestCase):
         super(RSDClientTestCase, self).setUp()
         self.mock_rsd_lib = mock.Mock()
         self.mock_rsd_lib._rsd_api_version = "2.4.0"
+        self.mock_rsd_lib._redfish_version = "1.1.0"
         self.mock_rsd_lib_factory = mock.MagicMock(
             return_value=self.mock_rsd_lib)
         fake_RSDLib.factory = self.mock_rsd_lib_factory
@@ -120,20 +121,34 @@ class RSDClientTestCase(test.TestCase):
                                                      verify=True)
         self.assertTrue(isinstance(rsd_client, rsd_driver.RSDClient))
 
-    def test_initialize_incorrect_version(self):
+    def test_initialize_rsd_api_incorrect_version(self):
         self.mock_rsd_lib._rsd_api_version = "2.3.0"
         rsd_client_init = rsd_driver.RSDClient.initialize
         self.assertRaises(exception.VolumeBackendAPIException,
                           rsd_client_init, MOCK_URL, MOCK_USER,
                           MOCK_PASSWORD, False)
 
-    def test_initialize_higher_version(self):
+    def test_initialize_rsd_api_higher_version(self):
         self.mock_rsd_lib._rsd_api_version = "2.5.0"
         rsd_client = rsd_driver.RSDClient.initialize(MOCK_URL, MOCK_USER,
                                                      MOCK_PASSWORD,
                                                      verify=True)
         self.assertTrue(isinstance(rsd_client, rsd_driver.RSDClient))
 
+    def test_initialize_rsd_lib_incorrect_version(self):
+        self.mock_rsd_lib._redfish_version = "1.0.0"
+        rsd_client_init = rsd_driver.RSDClient.initialize
+        self.assertRaises(exception.VolumeBackendAPIException,
+                          rsd_client_init, MOCK_URL, MOCK_USER,
+                          MOCK_PASSWORD, False)
+
+    def test_initialize_rsd_lib_higher_version(self):
+        self.mock_rsd_lib._redfish_version = "1.5.0"
+        rsd_client = rsd_driver.RSDClient.initialize(MOCK_URL, MOCK_USER,
+                                                     MOCK_PASSWORD,
+                                                     verify=True)
+        self.assertTrue(isinstance(rsd_client, rsd_driver.RSDClient))
+
     def test_initialize_invalid_credentials(self):
         self.mock_rsd_lib_factory.side_effect = (
             fixtures._fixtures.timeout.TimeoutException)
@@ -207,14 +222,18 @@ class RSDClientTestCase(test.TestCase):
         mock_stor_serv.volumes.get_member.assert_called_with(self.resource_url)
 
     def test_get_providing_pool(self):
+        mock_providing_pool_collection = mock.Mock()
+        mock_providing_pool_collection.path = mock.Mock()
+        mock_providing_pool = mock.Mock()
+        mock_providing_pool.get_members = mock.Mock(
+            return_value=[mock_providing_pool_collection])
         mock_volume = mock.Mock()
         mock_volume.capacity_sources = [mock.Mock()]
-        mock_volume.capacity_sources[0].providing_pools = [mock.Mock()]
+        mock_volume.capacity_sources[0].providing_pools = [mock_providing_pool]
 
         provider_pool = self.rsd_client._get_providing_pool(mock_volume)
 
-        self.assertEqual(mock_volume.capacity_sources[0].providing_pools[0],
-                         provider_pool)
+        self.assertEqual(mock_providing_pool_collection.path, provider_pool)
 
     def test_get_providing_pool_no_capacity(self):
         mock_volume = mock.Mock()

cinder/volume/drivers/rsd.py

@@ -84,14 +84,21 @@ class RSDClient(object):
             raise exception.VolumeBackendAPIException(
                 data=_("initialize: Cannot connect to RSD PODM."))
 
-        rsd_lib_version = version.LooseVersion(rsdlib._rsd_api_version)
-        if rsd_lib_version < version.LooseVersion("2.4.0"):
+        rsd_api_version = version.LooseVersion(rsdlib._rsd_api_version)
+        if rsd_api_version < version.LooseVersion("2.4.0"):
             raise exception.VolumeBackendAPIException(
-                data=(_("initialize: Unsupported rsd_lib version: "
+                data=(_("initialize: Unsupported rsd_api version: "
                         "%(current)s < %(expected)s.")
                       % {'current': rsdlib._rsd_api_version,
                          'expected': "2.4.0"}))
 
+        if rsdlib._redfish_version < version.LooseVersion("1.1.0"):
+            raise exception.VolumeBackendAPIException(
+                data=(_("initialize: Unsupported rsd_lib version: "
+                        "%(current)s < %(expected)s.")
+                      % {'current': rsdlib._redfish_version,
+                         'expected': "1.1.0"}))
+
         LOG.info("initialize: Connected to %s at version %s.",
                  url, rsdlib._rsd_api_version)
         return cls(rsdlib)
@@ -137,7 +144,8 @@ class RSDClient(object):
                 detail=(_("Volume %(vol)s has %(len_pp)d providing_pools!")
                         % {'vol': volume.path,
                            'len_pp': len_pp}))
-        return volume.capacity_sources[0].providing_pools[0]
+        providing_pool = volume.capacity_sources[0].providing_pools[0]
+        return providing_pool.get_members()[0].path
 
     def _create_vol_or_snap(self,
                             storage,

driver-requirements.txt

@@ -41,6 +41,3 @@ infi.dtypes.iqn # PSF
 
 # Storpool
 storpool # Apache-2.0
-
-# RSD Driver
-rsd-lib # Apache-2.0

lower-constraints.txt

@@ -173,3 +173,4 @@ capacity==1.3.10
 info.dtypes.wwn==0.1.1
 info.dtypes.iqn==0.4.0
 purestorage==1.6.0
+rsd-lib==1.1.0

setup.cfg

@@ -127,3 +127,6 @@ infinidat =
     infinisdk>=103.0.1 # BSD-3
 pure =
     purestorage>=1.6.0 # BSD
+rsd =
+    rsd-lib>=1.1.0 # Apache-2.0
+