add another switch to control

if getting db members or not. Need to set to
True if SY does not modify at last.

Author: Niklaus-xie

f5lbaasdriver/v2/bigip/driver_v2.py

@@ -47,6 +47,12 @@
         default=0,
         help=('switch driver performance mode from 0 to 3')
     ),
+    cfg.BoolOpt(
+        'fetch_fresh_db_members',
+        default=True,
+        help=('If True, fetch fresh members from db in _get_members,'
+              'if set to False, skip the fetch')
+    ),
     cfg.StrOpt(
         'f5_loadbalancer_pool_scheduler_driver_v2',
         default=(

f5lbaasdriver/v2/bigip/service_builder.py

@@ -620,7 +620,9 @@ def _get_members(self, context, loadbalancer, pools,
         pool_members = []
 
         def get_db_members():
-            if cfg.CONF.f5_driver_perf_mode in (1, 3):
+            if cfg.CONF.f5_driver_perf_mode in (1, 3) \
+                    and not cfg.CONF.fetch_fresh_db_members:
+                LOG.debug('inside this logic')
                 members = []
                 for p1 in loadbalancer.pools:
                     for p2 in pools:
@@ -632,6 +634,7 @@ def get_db_members():
                 LOG.info(members)
                 return members
             else:
+                LOG.debug('getting the db members')
                 return self.plugin.db.get_pool_members(
                     context,
                     filters={'pool_id': [p['id'] for p in pools]}