From a09828b75100ea0672ecd04e9628dc8a118936a6 Mon Sep 17 00:00:00 2001
From: Till Faelligen <2353100+S7evinK@users.noreply.github.com>
Date: Wed, 22 Mar 2023 09:05:18 +0100
Subject: [PATCH] Retry getting tags

---
 cmd/dendrite-upgrade-tests/main.go | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/cmd/dendrite-upgrade-tests/main.go b/cmd/dendrite-upgrade-tests/main.go
index 174a80a3e..6a0e21799 100644
--- a/cmd/dendrite-upgrade-tests/main.go
+++ b/cmd/dendrite-upgrade-tests/main.go
@@ -259,10 +259,20 @@ func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir
 
 func getAndSortVersionsFromGithub(httpClient *http.Client) (semVers []*semver.Version, err error) {
 	u := "https://api.github.com/repos/matrix-org/dendrite/tags"
-	res, err := httpClient.Get(u)
-	if err != nil {
-		return nil, err
+
+	var res *http.Response
+	for i := 0; i < 3; i++ {
+		res, err = httpClient.Get(u)
+		if err != nil {
+			return nil, err
+		}
+		if res.StatusCode == 200 {
+			break
+		}
+		log.Printf("Github API returned HTTP %d, retrying\n", res.StatusCode)
+		time.Sleep(time.Second * 5)
 	}
+
 	if res.StatusCode != 200 {
 		return nil, fmt.Errorf("%s returned HTTP %d", u, res.StatusCode)
 	}