Centralize vif,xenpool & vol_utils config options

This change moves config options of
xenserver module from
vif.py, pool.py and volume_utils.py
to centralize location
nova/conf/xenserver.py

Change-Id: I07bfaac36b4a8021788617958196b676d5b2b173
Implements: blueprint centralize-config-options-newton

nova/conf/xenserver.py

@@ -351,12 +351,35 @@ xenapi_vmops_opts = [
                help='Dom0 plugin driver used to handle image uploads.'),
     ]
 
+xenapi_volume_utils_opts = [
+    cfg.IntOpt('introduce_vdi_retry_wait',
+               default=20,
+               help='Number of seconds to wait for an SR to settle '
+                    'if the VDI does not exist when first introduced'),
+    ]
+
+xenapi_ovs_integration_bridge_opts = [
+    cfg.StrOpt('ovs_integration_bridge',
+               default='xapi1',
+               help='Name of Integration Bridge used by Open vSwitch'),
+    ]
+
+xenapi_pool_opts = [
+    cfg.BoolOpt('use_join_force',
+                default=True,
+                help='To use for hosts with different CPUs'),
+    ]
+
+
 ALL_XENSERVER_OPTS = (xenapi_agent_opts +
                       xenapi_session_opts +
                       xenapi_torrent_opts +
                       xenapi_vm_utils_opts +
                       xenapi_opts +
-                      xenapi_vmops_opts)
+                      xenapi_vmops_opts +
+                      xenapi_volume_utils_opts +
+                      xenapi_ovs_integration_bridge_opts +
+                      xenapi_pool_opts)
 
 
 def register_opts(conf):

nova/virt/opts.py

@@ -29,10 +29,7 @@ import nova.virt.libvirt.volume.scality
 import nova.virt.libvirt.volume.smbfs
 import nova.virt.libvirt.volume.volume
 import nova.virt.xenapi.agent
-import nova.virt.xenapi.pool
-import nova.virt.xenapi.vif
 import nova.virt.xenapi.vmops
-import nova.virt.xenapi.volume_utils
 
 
 def list_opts():
@@ -56,10 +53,4 @@ def list_opts():
              nova.virt.libvirt.volume.scality.volume_opts,
              nova.virt.libvirt.volume.smbfs.volume_opts,
          )),
-        ('xenserver',
-         itertools.chain(
-             [nova.virt.xenapi.vif.xenapi_ovs_integration_bridge_opt],
-             nova.virt.xenapi.pool.xenapi_pool_opts,
-             nova.virt.xenapi.volume_utils.xenapi_volume_utils_opts,
-         )),
     ]

nova/virt/xenapi/pool.py

@@ -17,7 +17,6 @@
 Management class for Pool-related functions (join, eject, etc).
 """
 
-from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_serialization import jsonutils
 import six
@@ -32,14 +31,7 @@ from nova.virt.xenapi import vm_utils
 
 LOG = logging.getLogger(__name__)
 
-xenapi_pool_opts = [
-    cfg.BoolOpt('use_join_force',
-                default=True,
-                help='To use for hosts with different CPUs'),
-    ]
-
 CONF = nova.conf.CONF
-CONF.register_opts(xenapi_pool_opts, 'xenserver')
 
 
 class ResourcePool(object):

nova/virt/xenapi/vif.py

@@ -17,9 +17,9 @@
 
 """VIF drivers for XenAPI."""
 
-from oslo_config import cfg
 from oslo_log import log as logging
 
+import nova.conf
 from nova import exception
 from nova.i18n import _
 from nova.i18n import _LW
@@ -27,12 +27,7 @@ from nova.virt.xenapi import network_utils
 from nova.virt.xenapi import vm_utils
 
 
-xenapi_ovs_integration_bridge_opt = cfg.StrOpt('ovs_integration_bridge',
-                        default='xapi1',
-                        help='Name of Integration Bridge used by Open vSwitch')
-
-CONF = cfg.CONF
-CONF.register_opt(xenapi_ovs_integration_bridge_opt, 'xenserver')
+CONF = nova.conf.CONF
 
 LOG = logging.getLogger(__name__)
 

nova/virt/xenapi/volume_utils.py

@@ -23,24 +23,17 @@ import string
 import uuid
 
 from eventlet import greenthread
-from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import strutils
 from oslo_utils import versionutils
 import six
 
+import nova.conf
 from nova import exception
 from nova.i18n import _, _LE, _LW
 
-xenapi_volume_utils_opts = [
-    cfg.IntOpt('introduce_vdi_retry_wait',
-               default=20,
-               help='Number of seconds to wait for an SR to settle '
-                    'if the VDI does not exist when first introduced'),
-    ]
 
-CONF = cfg.CONF
-CONF.register_opts(xenapi_volume_utils_opts, 'xenserver')
+CONF = nova.conf.CONF
 
 LOG = logging.getLogger(__name__)