From 209bf1ef495d2d599ef51e207e8de0694dec9790 Mon Sep 17 00:00:00 2001
From: Josh Kearney <josh@jk0.org>
Date: Fri, 8 Jul 2011 17:12:14 -0500
Subject: [PATCH] Add a flag to disable ec2 or osapi.

---
 bin/nova-api  | 14 +++++++++-----
 nova/flags.py |  2 ++
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/bin/nova-api b/bin/nova-api
index 4c5164ea1478..fe8e833660b5 100755
--- a/bin/nova-api
+++ b/bin/nova-api
@@ -36,17 +36,21 @@ if os.path.exists(os.path.join(possible_topdir, "nova", "__init__.py")):
 import nova.service
 import nova.utils
 
+from nova import flags
+
+
+FLAGS = flags.FLAGS
+
 
 def main():
     """Launch EC2 and OSAPI services."""
     nova.utils.Bootstrapper.bootstrap_binary(sys.argv)
 
-    ec2 = nova.service.WSGIService("ec2")
-    osapi = nova.service.WSGIService("osapi")
-
     launcher = nova.service.Launcher()
-    launcher.launch_service(ec2)
-    launcher.launch_service(osapi)
+
+    for api in FLAGS.enabled_apis:
+        service = nova.service.WSGIService(api)
+        launcher.launch_service(service)
 
     signal.signal(signal.SIGTERM, lambda *_: launcher.stop())
 
diff --git a/nova/flags.py b/nova/flags.py
index 57a4ecf2f449..49355b436b5a 100644
--- a/nova/flags.py
+++ b/nova/flags.py
@@ -305,6 +305,8 @@ DEFINE_string('rabbit_virtual_host', '/', 'rabbit virtual host')
 DEFINE_integer('rabbit_retry_interval', 10, 'rabbit connection retry interval')
 DEFINE_integer('rabbit_max_retries', 12, 'rabbit connection attempts')
 DEFINE_string('control_exchange', 'nova', 'the main exchange to connect to')
+DEFINE_list('enabled_apis', ['ec2', 'osapi'],
+            'list of APIs to enable by default')
 DEFINE_string('ec2_host', '$my_ip', 'ip of api server')
 DEFINE_string('ec2_dmz_host', '$my_ip', 'internal ip of api server')
 DEFINE_integer('ec2_port', 8773, 'cloud controller port')