From a2d3ef2a6491eb63b5ee961fc930070207a79d84 Mon Sep 17 00:00:00 2001
From: Terry Wilson <twilson@redhat.com>
Date: Fri, 12 Nov 2021 10:58:22 -0600
Subject: [PATCH] Add cooperative_yield() to OvsdbIdl

On python-ovs 2.16.0+, overriding cooperative_yield() will allow
potentially long-running CPU-intensive methods to cooperatively
yield to greenthreads. This patch + ovs 2.16.0+ will resolve
the related bug. I'll see if I can get cooperative_yield
backported in OVS as well.

Related-Bug: #1929446
Change-Id: Ibd3c7427cbcab81253e0ed700174be09908bdef7
---
 ovsdbapp/backend/ovs_idl/connection.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ovsdbapp/backend/ovs_idl/connection.py b/ovsdbapp/backend/ovs_idl/connection.py
index b370435f..b6f6dc9d 100644
--- a/ovsdbapp/backend/ovs_idl/connection.py
+++ b/ovsdbapp/backend/ovs_idl/connection.py
@@ -159,6 +159,9 @@ class Connection(object):
 
 
 class OvsdbIdl(idl.Idl):
+    def cooperative_yield(self):
+        time.sleep(0)
+
     @classmethod
     def from_server(cls, connection_string, schema_name, *args,
                     helper=None, helper_tables=None, **kwargs):