Fix cells instance deletion

Instance delete and soft_delete are broken with cells when the API
doesn't know the cell of an instance.  A traceback occurs in all child
cells.  Also: soft_delete results in a 'hard' type being sent to
child cells vs 'soft'.

Fixes bug 1154333

Change-Id: I13ac839fa13a66caa100a3459bcc8e1183821ff1

nova/compute/cells_api.py

@@ -255,9 +255,9 @@ class ComputeCellsAPI(compute_api.API):
             # broadcast a message down to all cells and hope this ends
             # up resolving itself...  Worse case.. the instance will
             # show back up again here.
-            delete_type = method == 'soft_delete' and 'soft' or 'hard'
+            delete_type = method_name == 'soft_delete' and 'soft' or 'hard'
             self.cells_rpcapi.instance_delete_everywhere(context,
-                    instance['uuid'], delete_type)
+                    instance, delete_type)
 
     @validate_cell
     def restore(self, context, instance):

nova/tests/compute/test_compute_cells.py

@@ -20,6 +20,7 @@ import functools
 
 from nova.compute import cells_api as compute_cells_api
 from nova import db
+from nova import exception
 from nova.openstack.common import jsonutils
 from nova.openstack.common import log as logging
 from nova.tests.compute import test_compute
@@ -171,6 +172,36 @@ class CellsComputeAPITestCase(test_compute.ComputeAPITestCase):
     def test_evacuate(self):
         self.skipTest("Test is incompatible with cells.")
 
+    def test_delete_instance_no_cell(self):
+        cells_rpcapi = self.compute_api.cells_rpcapi
+        self.mox.StubOutWithMock(cells_rpcapi,
+                                 'instance_delete_everywhere')
+        self.mox.StubOutWithMock(self.compute_api,
+                                 '_cast_to_cells')
+        inst = self._create_fake_instance()
+        exc = exception.InstanceUnknownCell(instance_uuid=inst['uuid'])
+        self.compute_api._cast_to_cells(self.context, inst,
+                                        'delete').AndRaise(exc)
+        cells_rpcapi.instance_delete_everywhere(self.context,
+                inst, 'hard')
+        self.mox.ReplayAll()
+        self.compute_api.delete(self.context, inst)
+
+    def test_soft_delete_instance_no_cell(self):
+        cells_rpcapi = self.compute_api.cells_rpcapi
+        self.mox.StubOutWithMock(cells_rpcapi,
+                                 'instance_delete_everywhere')
+        self.mox.StubOutWithMock(self.compute_api,
+                                 '_cast_to_cells')
+        inst = self._create_fake_instance()
+        exc = exception.InstanceUnknownCell(instance_uuid=inst['uuid'])
+        self.compute_api._cast_to_cells(self.context, inst,
+                                        'soft_delete').AndRaise(exc)
+        cells_rpcapi.instance_delete_everywhere(self.context,
+                inst, 'soft')
+        self.mox.ReplayAll()
+        self.compute_api.soft_delete(self.context, inst)
+
 
 class CellsComputePolicyTestCase(test_compute.ComputePolicyTestCase):
     def setUp(self):