Make get_console_output() use objects

This changes the get_console_output() method in compute manager to take
objects.

Related to blueprint compute-manager-objects-juno

Change-Id: Ia8cb2168313903d5255fa2c9616ee2a56aebdb68

nova/api/ec2/cloud.py

@@ -771,7 +771,8 @@ class CloudController(object):
             ec2_id = instance_id
         validate_ec2_id(ec2_id)
         instance_uuid = ec2utils.ec2_inst_id_to_uuid(context, ec2_id)
-        instance = self.compute_api.get(context, instance_uuid)
+        instance = self.compute_api.get(context, instance_uuid,
+                                        want_objects=True)
         output = self.compute_api.get_console_output(context, instance)
         now = timeutils.utcnow()
         return {"InstanceId": ec2_id,

nova/api/openstack/compute/contrib/console_output.py

@@ -39,7 +39,8 @@ class ConsoleOutputController(wsgi.Controller):
         authorize(context)
 
         try:
-            instance = self.compute_api.get(context, id)
+            instance = self.compute_api.get(context, id,
+                                            want_objects=True)
         except exception.NotFound:
             msg = _('Instance not found')
             raise webob.exc.HTTPNotFound(explanation=msg)

nova/api/openstack/compute/plugins/v3/console_output.py

@@ -42,7 +42,8 @@ class ConsoleOutputController(wsgi.Controller):
         context = req.environ['nova.context']
         authorize(context)
 
-        instance = common.get_instance(self.compute_api, context, id)
+        instance = common.get_instance(self.compute_api, context, id,
+                                       want_objects=True)
         length = body['get_console_output'].get('length')
         if length is not None and int(length) == -1:
             # NOTE: -1 means an unlimited length. So here translates it to None

nova/compute/manager.py

@@ -562,7 +562,7 @@ class ComputeVirtAPI(virtapi.VirtAPI):
 class ComputeManager(manager.Manager):
     """Manages the running instances from creation to destruction."""
 
-    target = messaging.Target(version='3.27')
+    target = messaging.Target(version='3.28')
 
     def __init__(self, compute_driver=None, *args, **kwargs):
         """Load configuration options and connect to the hypervisor."""
@@ -3968,14 +3968,13 @@ class ComputeManager(manager.Manager):
         network_info = self._get_instance_nw_info(context, instance)
         self._inject_network_info(context, instance, network_info)
 
+    @object_compat
     @messaging.expected_exceptions(NotImplementedError,
                                    exception.InstanceNotFound)
     @wrap_exception()
     @wrap_instance_fault
     def get_console_output(self, context, instance, tail_length):
         """Send the console output for the given instance."""
-        instance = objects.Instance._from_db_object(
-            context, objects.Instance(), instance)
         context = context.elevated()
         LOG.audit(_("Get console output"), context=context,
                   instance=instance)

nova/compute/rpcapi.py

@@ -254,6 +254,7 @@ class ComputeAPI(object):
                rollback_live_migration_at_destination() take an object
         ...  - Removed run_instance()
         3.27 - Make run_instance() accept a new-world object
+        3.28 - Update get_console_output() to take an object
     '''
 
     VERSION_ALIASES = {
@@ -446,13 +447,16 @@ class ComputeAPI(object):
                    reservations=reservations)
 
     def get_console_output(self, ctxt, instance, tail_length):
+        if self.client.can_send_version('3.28'):
+            version = '3.28'
+        else:
             # NOTE(russellb) Havana compat
             version = self._get_compat_version('3.0', '2.0')
-        instance_p = jsonutils.to_primitive(instance)
+            instance = jsonutils.to_primitive(instance)
         cctxt = self.client.prepare(server=_compute_host(None, instance),
                 version=version)
         return cctxt.call(ctxt, 'get_console_output',
-                          instance=instance_p, tail_length=tail_length)
+                          instance=instance, tail_length=tail_length)
 
     def get_console_pool_info(self, ctxt, console_type, host):
         # NOTE(russellb) Havana compat

nova/tests/api/openstack/compute/contrib/test_console_output.py

@@ -21,6 +21,7 @@ from nova import exception
 from nova.openstack.common import jsonutils
 from nova import test
 from nova.tests.api.openstack import fakes
+from nova.tests import fake_instance
 
 
 def fake_get_console_output(self, _context, _instance, tail_length):
@@ -44,8 +45,8 @@ def fake_get_console_output_all_characters(self, _ctx, _instance, _tail_len):
     return string.printable
 
 
-def fake_get(self, context, instance_uuid):
-    return {'uuid': instance_uuid}
+def fake_get(self, context, instance_uuid, want_objects=False):
+    return fake_instance.fake_instance_obj(context, **{'uuid': instance_uuid})
 
 
 def fake_get_not_found(*args, **kwargs):

nova/tests/compute/test_rpcapi.py

@@ -249,7 +249,8 @@ class ComputeRpcAPITestCase(test.TestCase):
 
     def test_get_console_output(self):
         self._test_compute_api('get_console_output', 'call',
-                instance=self.fake_instance, tail_length='tl')
+                instance=self.fake_instance, tail_length='tl',
+                version='3.28')
 
         # NOTE(russellb) Havana compat
         self.flags(compute='havana', group='upgrade_levels')