Add some hooks for managers when service starts

Adds pre_start_hook() and post_start_hook() and fixes a couple of hard
coded binary name checks in service.py

Change-Id: I062790a88ed7f15a6f28961d6ddc1f230e19e0cb

1 files changed, 8 insertions, 3 deletions

diff --git a/nova/scheduler/manager.py b/nova/scheduler/manager.py
index 4c3f8025a..0703e030a 100644
--- a/nova/scheduler/manager.py
+++ b/nova/scheduler/manager.py
@@ -26,6 +26,7 @@ import sys
 from nova.compute import rpcapi as compute_rpcapi
 from nova.compute import utils as compute_utils
 from nova.compute import vm_states
+import nova.context
 from nova import db
 from nova import exception
 from nova import flags
@@ -62,6 +63,13 @@ class SchedulerManager(manager.Manager):
         self.driver = importutils.import_object(scheduler_driver)
         super(SchedulerManager, self).__init__(*args, **kwargs)
 
+    def post_start_hook(self):
+        """After we start up and can receive messages via RPC, tell all
+        compute nodes to send us their capabilities.
+        """
+        ctxt = nova.context.get_admin_context()
+        compute_rpcapi.ComputeAPI().publish_service_capabilities(ctxt)
+
     def update_service_capabilities(self, context, service_name,
                                     host, capabilities):
         """Process a capability update from a service node."""
@@ -259,6 +267,3 @@ class SchedulerManager(manager.Manager):
     @manager.periodic_task
     def _expire_reservations(self, context):
         QUOTAS.expire(context)
-
-    def request_service_capabilities(self, context):
-        compute_rpcapi.ComputeAPI().publish_service_capabilities(context)