Add new command to attach resource endpoint

New command 'openstack rsd node attach' to allow user to attach a
specific resource to existing composed node, or specify capacity
criteria.

Change-Id: I142fba9faf2b377c65b70420a792606f8ad7b33f

rsdclient/osc/v1/node.py

@@ -283,3 +283,30 @@ class ListNode(command.Command):
         rsd_client = self.app.client_manager.rsd
         node_list = rsd_client.node.list()
         print(node_list)
+
+
+class AttachEndpoint(command.Command):
+    _description = "Attach drive to existing composed node"
+
+    def get_parser(self, prog_name):
+        parser = super(AttachEndpoint, self).get_parser(prog_name)
+        parser.add_argument(
+            'node',
+            metavar='<node>',
+            help='ID of the node.')
+        parser.add_argument(
+            '--resource',
+            metavar='<resource uri>',
+            help='URI of the specific resource to attach to node.')
+        parser.add_argument(
+            '--capacity',
+            metavar='<size>',
+            type=int,
+            help='Required storage capacity in GiB.')
+        return parser
+
+    def take_action(self, parsed_args):
+        self.log.debug("take_action(%s)", parsed_args)
+        rsd_client = self.app.client_manager.rsd
+        rsd_client.node.attach(parsed_args.node, parsed_args.resource,
+                               parsed_args.capacity)

rsdclient/tests/v1/test_node.py

@@ -73,3 +73,11 @@ class NodeTest(testtools.TestCase):
         self.mgr.client.get_node_collection.assert_called_once()
         self.mgr.client.get_node.assert_called_once_with('/redfish/v1/Nodes/1')
         self.assertEqual(str(result), expected)
+
+    def test_attach(self):
+        node_id = '1'
+        mock_node = mock.Mock()
+        self.client.get_node.return_value = mock_node
+        self.mgr.attach(node_id, 'fake uri', 10)
+        self.mgr.client.get_node.assert_called_once_with('/redfish/v1/Nodes/1')
+        mock_node.attach_endpoint.assert_called_once_with('fake uri', 10)

rsdclient/v1/node.py

@@ -48,3 +48,7 @@ class NodeManager(base.Manager):
         node_info_table = utils.print_dict(
             nodes, ["Identity", "Name", "UUID", "Description"])
         return node_info_table
+
+    def attach(self, node_id, endpoint=None, capacity=None):
+        node = self.client.get_node(self._get_node_uri(node_id))
+        node.attach_endpoint(endpoint, capacity)

setup.cfg

@@ -32,6 +32,7 @@ openstack.rsd.v1 =
     rsd_node_delete = rsdclient.osc.v1.node:DeleteNode
     rsd_node_show = rsdclient.osc.v1.node:ShowNode
     rsd_node_list = rsdclient.osc.v1.node:ListNode
+    rsd_node_attach = rsdclient.osc.v1.node:AttachEndpoint
 
     rsd_storage_list = rsdclient.osc.v1.storage_service:ListStorageServices
     rsd_storage_show = rsdclient.osc.v1.storage_service:ShowStorageServices