From 7bcd2a259be0a35d9387a24329f55250efde3aec Mon Sep 17 00:00:00 2001
From: Mehdi Abaakouk <sileht@redhat.com>
Date: Mon, 12 Sep 2016 19:54:03 +0200
Subject: [PATCH] ceph: Fix metricd start

metricd can be started before api, in that case
metricd fail because the measure object don't yet exists.

Change-Id: Id7822f16718e31d6a8916cec8a6b77194071a31e
---

diff --git a/gnocchi/storage/ceph.py b/gnocchi/storage/ceph.py
index 15e1dad..d2ea4f8 100644
--- a/gnocchi/storage/ceph.py
+++ b/gnocchi/storage/ceph.py
@@ -167,8 +167,12 @@
     def _list_object_names_to_process(self, prefix=""):
         with rados.ReadOpCtx() as op:
             omaps, ret = self.ioctx.get_omap_vals(op, "", prefix, -1)
-            self.ioctx.operate_read_op(
-                op, self.MEASURE_PREFIX, flag=self.OMAP_READ_FLAGS)
+            try:
+                self.ioctx.operate_read_op(
+                    op, self.MEASURE_PREFIX, flag=self.OMAP_READ_FLAGS)
+            except rados.ObjectNotFound:
+                # API have still written nothing
+                return ()
             # NOTE(sileht): after reading the libradospy, I'm
             # not sure that ret will have the correct value
             # get_omap_vals transforms the C int to python int