From 57d160b7b396840f7ddfd53ab5d5678e93003057 Mon Sep 17 00:00:00 2001
From: Tony Breeds <tony@bakeyournoodle.com>
Date: Thu, 26 Jul 2018 11:53:31 +1000
Subject: [PATCH] Allow get_projects to fall-back to master.

In the event that the governance repo isn't tagged we want to be able to
fall-back to master so we can still potentially validate a candidate.

Change-Id: Ie13770f92dd05a3aa79bdc85b1bb482df3f3b8f3
---
 openstack_election/utils.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/openstack_election/utils.py b/openstack_election/utils.py
index ff20d349..07a163d5 100644
--- a/openstack_election/utils.py
+++ b/openstack_election/utils.py
@@ -24,6 +24,7 @@ import sys
 import time
 import yaml
 
+from six.moves.urllib.error import HTTPError
 from six.moves.urllib.parse import quote_plus
 from six.moves.urllib.request import urlopen
 
@@ -204,7 +205,7 @@ def check_atc_date(atc):
     return conf['timeframe']['end'] < expires_in
 
 
-def get_projects(tag=None):
+def _get_projects(tag=None):
     url = PROJECTS_URL
     cache_file = '.projects.pkl'
 
@@ -223,6 +224,17 @@ def get_projects(tag=None):
     return pickle.load(open(cache_file, "rb"))
 
 
+def get_projects(tag=None, fallback_to_master=False):
+    try:
+        projects = _get_projects(tag)
+    except HTTPError as exc:
+        if exc.code == 404 and tag and fallback_to_master:
+            projects = _get_projects()
+        else:
+            raise
+    return projects
+
+
 # Election functions
 def name2dir(name):
     """Convert project name to directory name: only [a-zA-Z_] in camelcase"""