From 41b9a650dfd9a78614272a1fd8f23c617261266a Mon Sep 17 00:00:00 2001
From: Zane Bitter <zbitter@redhat.com>
Date: Wed, 27 Mar 2019 17:06:23 -0400
Subject: [PATCH] Retry on DB deadlock in event_create()

Change-Id: I50c106a2b80a707ba8296efed86194526d6e5da6
Task: 30196
---
 heat/db/sqlalchemy/api.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/heat/db/sqlalchemy/api.py b/heat/db/sqlalchemy/api.py
index a92a6fbeba..1642c33e65 100644
--- a/heat/db/sqlalchemy/api.py
+++ b/heat/db/sqlalchemy/api.py
@@ -1118,6 +1118,8 @@ def _delete_event_rows(context, stack_id, limit):
     return retval
 
 
+@oslo_db_api.wrap_db_retry(max_retries=3, retry_on_deadlock=True,
+                           retry_interval=0.5, inc_retry_interval=True)
 def event_create(context, values):
     if 'stack_id' in values and cfg.CONF.max_events_per_stack:
         # only count events and purge on average