From 8e3ba4d7094c5e06e49a74ed6a4aa776978fc613 Mon Sep 17 00:00:00 2001
From: gord chung <gord@live.ca>
Date: Thu, 23 Nov 2017 15:14:29 -0500
Subject: [PATCH] simplify cache generation

don't use lambda to filter. this is 25% faster but really negligible.

Change-Id: Ib76470fc3a5cdfc79e497d568147b66c08e6dba1
---
 ceilometer/publisher/gnocchi.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ceilometer/publisher/gnocchi.py b/ceilometer/publisher/gnocchi.py
index 446e127eac..38bb088dde 100644
--- a/ceilometer/publisher/gnocchi.py
+++ b/ceilometer/publisher/gnocchi.py
@@ -461,8 +461,8 @@ class GnocchiPublisher(publisher.ConfigPublisherBase):
 
     def _check_resource_cache(self, key, resource_data):
         cached_hash = self.cache.get(key)
-        attribute_hash = hash(frozenset(filter(lambda x: x[0] != "metrics",
-                                               resource_data.items())))
+        attribute_hash = hash(tuple(i for i in resource_data.items()
+                                    if i[0] != 'metrics'))
         if not cached_hash or cached_hash != attribute_hash:
             return attribute_hash
         else: