Support volume summary command

This patch added volume summary command support.

Change-Id: I7cf6e149b9ce9cae21818c60146e6db9cc2904bd

cinderclient/tests/unit/v3/fakes.py

@@ -557,6 +557,15 @@ class FakeHTTPClient(fake_v2.FakeHTTPClient):
                    'levels': {'prefix3': 'WARNING', 'prefix4': 'ERROR'}}]
         return (200, {}, {'log_levels': levels})
 
+    def get_volumes_summary(self, **kw):
+        return 200, {}, {"volume-summary": {'total_size': 5,
+                                            'total_count': 5,
+                                            'metadata': {
+                                                "test_key": ["test_value"]
+                                            }
+                                            }
+                         }
+
     #
     # resource filters
     #

cinderclient/tests/unit/v3/test_shell.py

@@ -204,6 +204,10 @@ class ShellTest(utils.TestCase):
         # NOTE(jdg): we default to detail currently
         self.assert_called('GET', '/volumes/detail')
 
+    def test_summary(self):
+        self.run_command('--os-volume-api-version 3.12 summary')
+        self.assert_called('GET', '/volumes/summary')
+
     def test_list_with_group_id_before_3_10(self):
         self.assertRaises(exceptions.UnsupportedAttribute,
                           self.run_command,

cinderclient/tests/unit/v3/test_volumes.py

@@ -94,6 +94,14 @@ class VolumesTest(utils.TestCase):
         cs.assert_called('POST', '/volumes', body=expected)
         self._assert_request_id(vol)
 
+    @ddt.data((False, '/volumes/summary'),
+              (True, '/volumes/summary?all_tenants=True'))
+    def test_volume_summary(self, all_tenants_input):
+        all_tenants, url = all_tenants_input
+        cs = fakes.FakeClient(api_versions.APIVersion('3.12'))
+        cs.volumes.summary(all_tenants=all_tenants)
+        cs.assert_called('GET', url)
+
     def test_volume_list_manageable(self):
         cs = fakes.FakeClient(api_versions.APIVersion('3.8'))
         cs.volumes.list_manageable('host1', detailed=False)

cinderclient/v3/shell.py

@@ -600,6 +600,27 @@ def do_metadata(cs, args):
                                    reverse=True))
 
 
+@api_versions.wraps('3.12')
+@utils.arg('--all-tenants',
+           dest='all_tenants',
+           metavar='<0|1>',
+           nargs='?',
+           type=int,
+           const=1,
+           default=utils.env('ALL_TENANTS', default=0),
+           help='Shows details for all tenants. Admin only.')
+def do_summary(cs, args):
+    """Get volumes summary."""
+    all_tenants = args.all_tenants
+    info = cs.volumes.summary(all_tenants)
+
+    formatters = ['total_size', 'total_count']
+    if cs.api_version >= api_versions.APIVersion("3.36"):
+        formatters.append('metadata')
+
+    utils.print_dict(info['volume-summary'], formatters=formatters)
+
+
 @api_versions.wraps('3.11')
 def do_group_type_list(cs, args):
     """Lists available 'group types'. (Admin only will see private types)"""

cinderclient/v3/volumes.py

@@ -124,6 +124,14 @@ class VolumeManager(volumes.VolumeManager):
         return self._action('revert', volume,
                             info={'snapshot_id': base.getid(snapshot.id)})
 
+    def summary(self, all_tenants):
+        """Get volumes summary."""
+        url = "/volumes/summary"
+        if all_tenants:
+            url += "?all_tenants=True"
+        _, body = self.api.client.get(url)
+        return body
+
     @api_versions.wraps("3.0")
     def delete_metadata(self, volume, keys):
         """Delete specified keys from volumes metadata.

releasenotes/notes/support-volume-summary-d6d5bb2acfef6ad5.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+      Support get volume summary command in V3.12.