From 1096fa368db9986df24080465aa95dfc33279963 Mon Sep 17 00:00:00 2001
From: Tom Wieczorek <twieczorek@mirantis.com>
Date: Fri, 3 Mar 2023 15:11:43 +0100
Subject: [PATCH] Test Autopilot updates for current and previous k0s minor
 versions

Currently, Autopilot update tests are hard-coded to use some 1.24 k0s
versions. Use the current Kubernetes version to determine the latest
k0s releases for that minor version and the previous minor version. Use
these k0s versions as a base for the Autopilot update tests.

Signed-off-by: Tom Wieczorek <twieczorek@mirantis.com>
(cherry picked from commit 8b365f1675f7571fb7c5f1851636b603b2590043)
---
 .github/workflows/go.yml | 15 ++++++++++---
 hack/tools/gen-matrix.sh | 46 ++++++++++++++++++++++++++++------------
 2 files changed, 44 insertions(+), 17 deletions(-)

diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index e45d3ea3e327..f3da84780dfc 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -264,10 +264,19 @@ jobs:
         with:
           go-version: ${{ env.GO_VERSION }}
 
-      - id: set-matrix
+      - name: Generate Autopilot test matrix
+        id: set-matrix
         run: |
-          matrix=$(./hack/tools/gen-matrix.sh 1.24.3 1.24.4)
-          echo matrix="$matrix" >> $GITHUB_OUTPUT
+          set -x
+          k8sVersion="$(./vars.sh kubernetes_version)"
+          majorVersion="${k8sVersion%%.*}"
+          minorVersion=${k8sVersion#$majorVersion.}
+          minorVersion="${minorVersion%%.*}"
+
+          {
+            printf matrix=
+            hack/tools/gen-matrix.sh "$majorVersion.$(($minorVersion - 1))" "$majorVersion.$minorVersion"
+          } >> "$GITHUB_OUTPUT"
 
   autopilot-smoketest:
     name: Autopilot smoke test
diff --git a/hack/tools/gen-matrix.sh b/hack/tools/gen-matrix.sh
index c87d671ef5bb..fed9903b3e76 100755
--- a/hack/tools/gen-matrix.sh
+++ b/hack/tools/gen-matrix.sh
@@ -1,20 +1,38 @@
-#!/bin/bash
+#!/usr/bin/env sh
 
-# Founds the last k0s releases of the given versions and generates json MATRIX_OUTPUT for github actions.
+# Finds the last k0s releases of the given versions and generates json MATRIX_OUTPUT for github actions.
 # Usage:
 #  ./gen-matrix.sh 1.24.2 1.24.3
-# Output: ["v1.24.2+k0s.0","v1.24.3+k0s.0"]
+# Output: ["v1.24.2+k0s.0", "v1.24.3+k0s.0"]
 
-go install github.com/k0sproject/version/cmd/k0s_sort@v0.2.2
-GOBIN="$(go env GOPATH)/bin"
-MATRIX_OUTPUT="["
-COMMA=""
-for i in "$@"; do \
-  RELEASE=$(gh release list -L 100 -R k0sproject/k0s | grep "+k0s." | grep -v Draft | cut -f 1 | $GOBIN/k0s_sort | grep $i | tail -1)
-  MATRIX_OUTPUT+="$COMMA\"$RELEASE\""
-  COMMA=","
-done
+list_k0s_releases() {
+  gh api -X GET /repos/k0sproject/k0s/releases \
+    -F per_page=100 --paginate \
+    --jq '.[] | select(.prerelease == false and .draft == false) | .name'
+}
 
-MATRIX_OUTPUT+="]"
+k0s_sort() {
+  go run github.com/k0sproject/version/cmd/k0s_sort@v0.2.2
+}
 
-echo $MATRIX_OUTPUT
+latest_release() {
+  list_k0s_releases | grep -F "v$1" | k0s_sort | tail -1
+}
+
+json_print_latest_releases() {
+  printf '['
+
+  pattern='"%s"'
+  for i in "$@"; do
+    latestRelease="$(latest_release "$i")"
+    [ -z "$latestRelease" ] || {
+      # shellcheck disable=SC2059
+      printf "$pattern" "$latestRelease"
+      pattern=', "%s"'
+    }
+  done
+
+  echo ']'
+}
+
+json_print_latest_releases "$@"