TT-13635 (ci): add workflow for alpha Helm chart releases (#371)

* (ci): add workflow for alpha Helm chart releases

This workflow automates the release process for alpha versions of Helm charts
when a new tag matching v*.*.* -alpha.* is pushed. It:

- Excludes the `tyk-operator` chart from the release process
- Updates chart versions and adds alpha prerelease annotations
- Updates internal chart dependencies to match the release version
- Runs helm lint checks before packaging
- Prepares charts for publishing to the repository

Signed-off-by: Burak Sekili <[email protected]>

* use artifacts to move modified content between jobs

Signed-off-by: Burak Sekili <[email protected]>

* use specific path for each matrix

Signed-off-by: Burak Sekili <[email protected]>

* simplify workflow

Signed-off-by: Burak Sekili <[email protected]>

* add missing fileName output

Signed-off-by: Burak Sekili <[email protected]>

* update debug statements

Signed-off-by: Burak Sekili <[email protected]>

* Update release-alpha.yaml

---------

Signed-off-by: Burak Sekili <[email protected]>

.github/workflows/release-alpha.yaml

@@ -0,0 +1,110 @@
+name: Helm Charts Release Alpha Version
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+-alpha.[0-9]+"
+
+jobs:
+  prepare-release:
+    runs-on: ubuntu-latest
+    outputs:
+      charts: ${{ steps.find-charts.outputs.charts }}
+      version: ${{ steps.extract-version.outputs.version }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Extract version
+        id: extract-version
+        run: |
+          VERSION=${GITHUB_REF#refs/tags/v}
+          echo "version=${VERSION}" >> $GITHUB_OUTPUT
+
+      - name: Find charts to release
+        id: find-charts
+        run: |
+          CHARTS=$(find . -type f -name Chart.yaml -not -path "*/components/tyk-operator/*" -exec dirname {} \; | jq -R . | jq -sc .)
+          echo "charts=${CHARTS}" >> $GITHUB_OUTPUT
+
+      - name: Update Chart.yaml of each chart
+        run: |
+          for chart_dir in $(find . -type f -name Chart.yaml -not -path "*/components/tyk-operator/*" -exec dirname {} \;); do
+              chart_file_path="$chart_dir/Chart.yaml"
+              echo "  --> updating: $chart_dir $chart_file_path"
+              yq eval '
+                .version = "${{ steps.extract-version.outputs.version }}" |
+                .annotations["artifacthub.io/prerelease"] = "true"
+              ' -i $chart_file_path
+
+              if [[ "$chart_dir" != "./components"* ]]; then
+                echo "    --> umbrella chart dependencies update $chart_dir $chart_file_path"
+
+                num_deps=$(yq eval '.dependencies | length' "${chart_file_path}")
+                echo "    --> umbrella chart dependencies count: $num_deps"
+                if [ "${num_deps}" -gt 0 ]; then
+                  charts=${{ steps.find-charts.outputs.charts }}
+                  echo "$charts"
+
+                  for i in $(seq 0 $((num_deps - 1))); do
+                    dep_name=$(yq eval ".dependencies[$i].name" "${chart_file_path}") || continue
+                    echo "    --> umbrella chart dependency check: $dep_name"
+                    if [[ "${dep_name}" =~ "tyk" ]] && [ "${dep_name}" != "tyk-operator" ]; then
+                      echo "    --> update dependency $dep_name version to ${{ steps.extract-version.outputs.version }}"
+                      yq eval ".dependencies[$i].version = \"${{ steps.extract-version.outputs.version }}\"" -i "${chart_file_path}"
+                    fi
+                  done
+                fi
+              fi
+  
+              echo "  --> cat $chart_dir $chart_file_path"
+              cat $chart_file_path
+          done
+
+      - name: Upload modified charts
+        uses: actions/upload-artifact@v4
+        with:
+          name: charts
+          path: "./**"
+
+  release-alpha-version:
+    needs: prepare-release
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        chart: ${{ fromJson(needs.prepare-release.outputs.charts) }}
+    steps:
+      - name: Download modified charts
+        uses: actions/download-artifact@v4
+        with:
+          name: charts
+          path: "./"
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v3
+        with:
+          version: "v3.16.0"
+
+      - name: Update Helm Dependencies
+        run: |
+          helm repo add tyk-helm https://helm.tyk.io/public/helm/charts/
+          helm dependency update ${{ matrix.chart }}
+
+      - name: Package Helm Chart
+        run: |
+          helm package ${{ matrix.chart }} --version ${{ needs.prepare-release.outputs.version }}
+
+      - name: Helm Chart package file name
+        id: file-name
+        run: |
+          echo "fileName=$(basename ${{ matrix.chart }})-${{ needs.prepare-release.outputs.version }}.tgz"
+          echo "fileName=$(basename ${{ matrix.chart }})-${{ needs.prepare-release.outputs.version }}.tgz" >> "$GITHUB_OUTPUT"
+
+      - name: Push Helm Chart to Cloudsmith
+        uses: cloudsmith-io/[email protected]
+        with:
+          api-key: ${{ secrets.CLOUDSMITH_API_KEY }}
+          command: "push"
+          format: "helm"
+          owner: "tyk"
+          repo: "helm"
+          file: "${{ steps.file-name.outputs.fileName }}"

.github/workflows/release.yaml

@@ -83,4 +83,4 @@ jobs:
          format: "helm"
          owner: "tyk"
          repo: "helm"
-         file: "${{ steps.file-name.outputs.fileName }}"
+         file: "${{ steps.file-name.outputs.fileName }}"