VNF scaling: CLI and python client

vnf-scale --vnf-name <vnf-name> --vnf-id <vnf-id>
          --scaling-policy-name <policy-name>
          --scaling-type <type>

implements:  blueprint #vnf-scaling
depends-on: Ib8cdd1295460e617806eec173e4d4ed8f35e6642

Change-Id: If88273efad41eaff466895ad7dbba6a8de31d119

tackerclient/shell.py

@@ -115,6 +115,7 @@ COMMAND_V1 = {
     'vnf-delete': vnf.DeleteVNF,
     'vnf-list': vnf.ListVNF,
     'vnf-show': vnf.ShowVNF,
+    'vnf-scale': vnf.ScaleVNF,
     # 'vnf-config-create'
     # 'vnf-config-push'
 

tackerclient/tacker/v1_0/vm/vnf.py

@@ -143,3 +143,58 @@ class DeleteVNF(tackerV10.DeleteCommand):
     """Delete a given VNF."""
 
     resource = _VNF
+
+
+class ScaleVNF(tackerV10.TackerCommand):
+    """Scale a VNF."""
+
+    api = 'nfv-orchestration'
+    resource = None
+    log = None
+
+    def get_parser(self, prog_name):
+        parser = super(ScaleVNF, self).get_parser(prog_name)
+        self.add_known_arguments(parser)
+        return parser
+
+    def run(self, parsed_args):
+        tacker_client = self.get_client()
+        tacker_client.format = parsed_args.request_format
+        body = self.args2body(parsed_args)
+        obj_creator = getattr(tacker_client,
+                              "scale_vnf")
+        obj_creator(body["scale"].pop('vnf_id'), body)
+
+    def add_known_arguments(self, parser):
+        vnf_group = parser.add_mutually_exclusive_group(required=True)
+        vnf_group.add_argument(
+            '--vnf-id',
+            help='VNF ID')
+        vnf_group.add_argument(
+            '--vnf-name',
+            help='VNF name')
+        parser.add_argument(
+            '--scaling-policy-name',
+            help='VNF policy name used to scale')
+        parser.add_argument(
+            '--scaling-type',
+            help='VNF scaling type, it could be either "out" or "in"')
+
+    def args2body(self, parsed_args):
+        args = {}
+        body = {"scale": args}
+
+        if parsed_args.vnf_name:
+            tacker_client = self.get_client()
+            tacker_client.format = parsed_args.request_format
+            _id = tackerV10.find_resourceid_by_name_or_id(tacker_client,
+                                                          'vnf',
+                                                          parsed_args.
+                                                          vnf_name)
+            parsed_args.vnf_id = _id
+
+        args['vnf_id'] = parsed_args.vnf_id
+        args['type'] = parsed_args.scaling_type
+        args['policy'] = parsed_args.scaling_policy_name
+
+        return body

tackerclient/v1_0/client.py

@@ -338,6 +338,7 @@ class Client(ClientBase):
     vnfd_path = '/vnfds/%s'
     vnfs_path = '/vnfs'
     vnf_path = '/vnfs/%s'
+    vnf_scale_path = '/vnfs/%s/actions'
 
     vims_path = '/vims'
     vim_path = '/vims/%s'
@@ -417,6 +418,10 @@ class Client(ClientBase):
     def update_vnf(self, vnf, body=None):
         return self.put(self.vnf_path % vnf, body=body)
 
+    @APIParamsCall
+    def scale_vnf(self, vnf, body=None):
+        return self.post(self.vnf_scale_path % vnf, body=body)
+
     @APIParamsCall
     def show_vim(self, vim, **_params):
         return self.get(self.vim_path % vim, params=_params)