chore(github-action): create release-<x> branches

Based on k3s releases branches detection. It runs once a week on monday

.github/workflows/create-release-branches.yml

@@ -0,0 +1,50 @@
+name: create-release-branches
+
+on:
+  workflow_call:
+    inputs:
+      force_push:
+        description: 'Force recreation of release branches from min version'
+        required: true
+        type: boolean
+        default: false
+  workflow_dispatch:
+    inputs:
+      force_push:
+        description: 'Force recreation of release branches from min version'
+        required: true
+        type: boolean
+        default: false
+  schedule:
+    - cron: "30 10 * * 1" # “At 10:30 on Monday.” https://crontab.guru/#30_10_*_*_1
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # GH cli is already pre-install, see https://docs.github.com/en/actions/using-workflows/using-github-cli-in-workflows
+
+      - name: Install yq cli
+        #See https://github.com/marketplace/actions/install-a-binary-from-github-releases
+        uses: jaxxstorm/[email protected]
+        with:
+          repo: mikefarah/yq
+          tag: v4.34.2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # reduce potential rate limiting
+
+      - name: create-missing-branches
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          FORCE_PUSH: ${{ inputs.force_push}}
+        run: |
+          # configure git
+          git config --global user.name "actions/k3s-boshrelease"
+          git config --global user.email "<>"
+          git config --global --add safe.directory /github/workspace
+          ./create-release-branches.bash
+

create-release-branches.bash

@@ -1,17 +1,32 @@
 #!/bin/bash
-set -x
+#set -x
 set -e # exit on non-zero status
 
-for v in 1.25 1.26 1.27 1.28 1.29 1.30 1.31 ; do
-  BRANCH_NAME="release-${v}"
-  git branch -d $BRANCH_NAME
-  git co -b $BRANCH_NAME
+PUSH_OPTIONS=""
+if [ $FORCE_PUSH = "true" ] ;then
+  PUSH_OPTIONS="$PUSH_OPTIONS --force"
+fi
+current_version=$(yq -r '.directories[0].contents[] | select (.path=="k3s-io/k3s") | .githubRelease.tag ' ./vendir.yml)
+current_version=${current_version#v}
+MIN_VERSION=$(echo "$current_version"|cut -d'.' -f1-2)
+for ref in $(git ls-remote -h https://github.com/k3s-io/k3s "release-*" | sed 's/refs\/heads\///' | awk '{print $2}') ; do
+  v=${ref#release-}
+  BRANCH_NAME="${ref}"
+  echo "Extracted values - v: $v - BRANCH_NAME: $BRANCH_NAME"
+  if [ $(echo "$v <= $MIN_VERSION"|bc) -eq 1 ];then
+    echo "Skipping version $v"
+    continue
+  else
+    echo "Keeping $v as $v > $MIN_VERSION"
+  fi
+  continue
+  git branch -d "$BRANCH_NAME"
+  git co -b "$BRANCH_NAME"
   sed -i.orig "s/tag: v.*/tag: v${v}.0/g" vendir.yml
   ! diff vendir.yml vendir.yml.orig
   rm vendir.yml.orig
   git add vendir.yml
   git commit -m "Initial branch creation for k8s version $v"
-  git push --set-upstream origin $BRANCH_NAME --force
-  ! gh pr create --base master --repo orange-cloudfoundry/k3s-packages-boshrelease --fill --body "Track divergence of release branches with master"
+  git push --set-upstream origin "$BRANCH_NAME" $PUSH_OPTIONS
   git co master
 done