Create pull request for adding helm index to main branch (#2086)

* Update manifest generation

* Add gh action for create pull request for adding helm index to main branch

* Add gh action for create pull request for adding helm index to main branch

* Add gh action for create pull request for adding helm index to main branch

* fixup quotest

* fixup!

* fixup!

* fixup!

---------

Co-authored-by: Gabriel Krenn <[email protected]>

.github/workflows/release.yaml

@@ -248,6 +248,7 @@ jobs:
     environment: Release
     permissions:
       contents: write
+      pull-requests: write
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
@@ -319,7 +320,30 @@ jobs:
           prerelease: false
           draft: true
           fail_on_unmatched_files: true
-
+      - name: Update index helm file
+        uses: actions/checkout@v3
+        run: |
+          echo "Updating Helm repo index"
+          ./hack/build/ci/generate-new-helm-index-yaml.sh
+      - name: Create pull request for adding helm index to main branch
+        uses: peter-evans/create-pull-request@v5
+        with:
+          base: main
+          delete-branch: true
+          add-paths: |
+            ./config/helm/repos/stable/index.yaml
+            ./config/helm/repos/stable/index.yaml.previous
+          title: '[Automatic] Update index for ${{ github.ref }} release'
+          commit-message: Update index.yaml
+          committer: GitHub <[email protected]>
+          author: ${{ github.actor }} <${{ github.actor }}@users.noreply.github.com>
+          body: |
+            # Description
+            Upgrade `index.yaml` to include latest version of the helm chart.
+            ## How can this be tested?
+            Helm upgrade to and install of `${{ github.ref }}` works.
+            ## Checklist
+            - [x] PR is labeled accordingly
   snyk:
     name: Push tag to snyk
     environment: Release

hack/build/ci/generate-new-helm-index-yaml.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+if [ -z "$2" ]
+then
+  echo "Usage: $0 <output-dir> <version_without_prefix>"
+  exit 1
+fi
+
+readonly output_dir="${1}"
+readonly version_without_prefix="${2}"
+
+cleanup() {
+  echo "cleanup"
+}
+
+trap 'cleanup' ERR
+
+cp "config/helm/repos/stable/index.yaml" "config/helm/repos/stable/index.yaml.previous"
+
+helm repo index "${output_dir}" \
+    --url "https://github.com/Dynatrace/dynatrace-operator/releases/download/v${version_without_prefix}" \
+    --merge "./config/helm/repos/stable/index.yaml"
+
+mv -v "${output_dir}"/index.yaml ./config/helm/repos/stable/index.yaml
+
+# Fix quotes in place to minimize the diff
+sed -i'' -e "s/\"/'/g" ./config/helm/repos/stable/index.yaml
+
+rm -rf "${output_dir}"