LBaaS member status reflected incorrectly

This fix adds the missing _get_object_status API.
It also fixes the logic of the way plugin analyzes uves
If status of any requested member uve is ACTIVE, it
shows the member as ACTIVE, rather than checking the first
available member uve.

Change-Id: I459bf39dace912caa962214de2aec3f24a0bced2
Closes-Bug: #1560741

neutron_plugin_contrail/plugins/opencontrail/loadbalancer/loadbalancer_member.py

@@ -42,6 +42,29 @@ def _get_member_pool_id(self, member):
         pool_uuid = member.parent_uuid
         return pool_uuid
 
+    def _get_object_status(self, member):
+        endpoint = "http://%s:%s" % (cfg.CONF.COLLECTOR.analytics_api_ip,
+                                     cfg.CONF.COLLECTOR.analytics_api_port)
+        analytics = analytics_client.Client(endpoint)
+        path = "/analytics/uves/service-instance/"
+        fqdn_uuid = "%s?cfilt=UveLoadbalancer" % member.parent_uuid
+        try:
+            lb_stats = analytics.request(path, fqdn_uuid)
+            member_stats = lb_stats['UveLoadbalancer']['member_stats']
+        except Exception:
+            member_stats = []
+
+        # In case of missing analytics, return ACTIVE
+        if not member_stats:
+            return constants.ACTIVE
+
+        for member_stat in member_stats:
+            if member_stat['uuid'] == member.uuid and \
+                member_stat['status'] == 'ACTIVE':
+                    return member_stat['status']
+
+        return constants.DOWN
+
     def make_dict(self, member, fields=None):
         res = {'id': member.uuid,
                'pool_id': member.parent_uuid,