Move agent_build_get_by_triple to conductor

This patch moves the final method in Compute's VirtAPI to using
the conductor.

Related to blueprint no-db-compute-manager

Change-Id: Icaf8990e117c8de7198de2f26f0d77e56c129430

nova/compute/manager.py

@@ -292,10 +292,8 @@ class ComputeVirtAPI(virtapi.VirtAPI):
         return self._compute.conductor_api.provider_fw_rule_get_all(context)
 
     def agent_build_get_by_triple(self, context, hypervisor, os, architecture):
-        return self._compute.db.agent_build_get_by_triple(context,
-                                                          hypervisor,
-                                                          os,
-                                                          architecture)
+        return self._compute.conductor_api.agent_build_get_by_triple(
+            context, hypervisor, os, architecture)
 
 
 class ComputeManager(manager.SchedulerDependentManager):

nova/conductor/api.py

@@ -128,6 +128,10 @@ class LocalAPI(object):
     def provider_fw_rule_get_all(self, context):
         return self._manager.provider_fw_rule_get_all(context)
 
+    def agent_build_get_by_triple(self, context, hypervisor, os, architecture):
+        return self._manager.agent_build_get_by_triple(context, hypervisor,
+                                                       os, architecture)
+
 
 class API(object):
     """Conductor API that does updates via RPC to the ConductorManager"""
@@ -204,3 +208,9 @@ class API(object):
 
     def provider_fw_rule_get_all(self, context):
         return self.conductor_rpcapi.provider_fw_rule_get_all(context)
+
+    def agent_build_get_by_triple(self, context, hypervisor, os, architecture):
+        return self.conductor_rpcapi.agent_build_get_by_triple(context,
+                                                               hypervisor,
+                                                               os,
+                                                               architecture)

nova/conductor/manager.py

@@ -43,7 +43,7 @@ datetime_fields = ['launched_at', 'terminated_at']
 class ConductorManager(manager.SchedulerDependentManager):
     """Mission: TBD"""
 
-    RPC_API_VERSION = '1.9'
+    RPC_API_VERSION = '1.10'
 
     def __init__(self, *args, **kwargs):
         super(ConductorManager, self).__init__(service_name='conductor',
@@ -144,3 +144,8 @@ class ConductorManager(manager.SchedulerDependentManager):
     def provider_fw_rule_get_all(self, context):
         rules = self.db.provider_fw_rule_get_all(context)
         return jsonutils.to_primitive(rules)
+
+    def agent_build_get_by_triple(self, context, hypervisor, os, architecture):
+        info = self.db.agent_build_get_by_triple(context, hypervisor, os,
+                                                 architecture)
+        return jsonutils.to_primitive(info)

nova/conductor/rpcapi.py

@@ -38,6 +38,7 @@ class ConductorAPI(nova.openstack.common.rpc.proxy.RpcProxy):
     1.8 - Added security_group_get_by_instance and
           security_group_rule_get_by_security_group
     1.9 - Added provider_fw_rule_get_all
+    1.10 - Added agent_build_get_by_triple
     """
 
     BASE_RPC_API_VERSION = '1.0'
@@ -133,3 +134,9 @@ class ConductorAPI(nova.openstack.common.rpc.proxy.RpcProxy):
     def provider_fw_rule_get_all(self, context):
         msg = self.make_msg('provider_fw_rule_get_all')
         return self.call(context, msg, version='1.9')
+
+    def agent_build_get_by_triple(self, context, hypervisor, os, architecture):
+        msg = self.make_msg('agent_build_get_by_triple',
+                            hypervisor=hypervisor, os=os,
+                            architecture=architecture)
+        return self.call(context, msg, version='1.10')

nova/tests/compute/test_virtapi.py

@@ -129,33 +129,10 @@ class ComputeVirtAPITest(VirtAPIBaseTest):
         self.compute = FakeCompute()
         self.virtapi = compute_manager.ComputeVirtAPI(self.compute)
 
-    def setUp(self):
-        super(ComputeVirtAPITest, self).setUp()
-        # NOTE(danms): Eventually these should all be migrated to the
-        # conductor, but until then, dispatch appropriately.
-        self.conductor_methods = ['instance_update', 'instance_get_by_uuid',
-                                  'instance_get_all_by_host',
-                                  'aggregate_get_by_host',
-                                  'aggregate_metadata_add',
-                                  'aggregate_metadata_delete',
-                                  'security_group_get_by_instance',
-                                  'security_group_rule_get_by_security_group',
-                                  'provider_fw_rule_get_all',
-                                  ]
-        self.db_methods = ['agent_build_get_by_triple',
-                            ]
-
     def assertExpected(self, method, *args, **kwargs):
-        if method in self.conductor_methods:
-            target = self.compute.conductor_api
-        elif method in self.db_methods:
-            target = self.compute.db
-        else:
-            raise Exception('Method "%s" not known to this test!')
-
-        self.mox.StubOutWithMock(target, method)
-        getattr(target, method)(self.context, *args, **kwargs).AndReturn(
-            'it worked')
+        self.mox.StubOutWithMock(self.compute.conductor_api, method)
+        getattr(self.compute.conductor_api, method)(
+            self.context, *args, **kwargs).AndReturn('it worked')
         self.mox.ReplayAll()
         result = getattr(self.virtapi, method)(self.context, *args, **kwargs)
         self.assertEqual(result, 'it worked')

nova/tests/conductor/test_conductor.py

@@ -251,6 +251,17 @@ class _BaseTestCase(object):
         result = self.conductor.provider_fw_rule_get_all(self.context)
         self.assertEqual(result, fake_rules)
 
+    def test_agent_build_get_by_triple(self):
+        self.mox.StubOutWithMock(db, 'agent_build_get_by_triple')
+        db.agent_build_get_by_triple(self.context, 'fake-hv', 'fake-os',
+                                     'fake-arch').AndReturn('it worked')
+        self.mox.ReplayAll()
+        result = self.conductor.agent_build_get_by_triple(self.context,
+                                                          'fake-hv',
+                                                          'fake-os',
+                                                          'fake-arch')
+        self.assertEqual(result, 'it worked')
+
 
 class ConductorTestCase(_BaseTestCase, test.TestCase):
     """Conductor Manager Tests"""