gha: Helm release pull operator/diom versions

.github/workflows/helm-publish.yml

@@ -16,6 +16,8 @@ on:
       is_release:
         type: boolean
         default: false
+      dry_run:
+        type: boolean
 
 jobs:
   helm-publish:
@@ -49,11 +51,14 @@ jobs:
           yq -i '.operator.image.repository = "ghcr.io/svix/diom-operator"' infra/helm-diom/values.yaml
           yq -i '.cluster.image.repository = "ghcr.io/svix/diom-server"' infra/helm-diom/values.yaml
 
-      - name: Package and push chart
+      - name: Package chart
         run: |
           if [ -n "${{ inputs.version }}" ]; then
             helm package ./infra/helm-diom --version ${{ inputs.version }}
           else
             helm package ./infra/helm-diom
           fi
-          helm push diom*.tgz oci://ghcr.io/svix/charts
+
+      - name: Push chart
+        if: ${{ !inputs.dry_run }}
+        run: helm push diom*.tgz oci://ghcr.io/svix/charts

.github/workflows/helm-release.yml

@@ -4,11 +4,16 @@ on:
   workflow_dispatch:
     inputs:
       operator_image_tag:
-        required: true
+        description: "(Optional) Override operator image tag"
         type: string
+        default: ''
       server_image_tag:
-        required: true
+        description: "(Optional) Override server image tag"
         type: string
+        default: ''
+      dry_run:
+        type: boolean
+        default: false
   workflow_call:
     inputs:
       operator_image_tag:
@@ -19,14 +24,50 @@ on:
         required: false
         type: string
         default: ''
+      dry_run:
+        type: boolean
+        default: false
 
 jobs:
+  read-versions:
+    runs-on: ubuntu-24.04
+    outputs:
+      operator_image_tag: ${{ steps.versions.outputs.operator_image_tag }}
+      server_image_tag: ${{ steps.versions.outputs.server_image_tag }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+      - name: Read versions from Cargo.toml
+        id: versions
+        run: |
+          if [ -n "${{ inputs.operator_image_tag }}" ]; then
+            OPERATOR_TAG="${{ inputs.operator_image_tag }}"
+          else
+            OPERATOR_TAG=$(cargo metadata --manifest-path infra/operator/Cargo.toml --no-deps --format-version 1 | jq -r '.packages[] | select(.name == "diom-operator") | .version')
+          fi
+          if [ -n "${{ inputs.server_image_tag }}" ]; then
+            SERVER_TAG="${{ inputs.server_image_tag }}"
+          else
+            SERVER_TAG=$(cargo metadata --manifest-path server/Cargo.toml --no-deps --format-version 1 | jq -r '.packages[] | select(.name == "diom-server") | .version')
+          fi
+          echo "operator_image_tag=${OPERATOR_TAG}" >> "$GITHUB_OUTPUT"
+          echo "server_image_tag=${SERVER_TAG}" >> "$GITHUB_OUTPUT"
+      - name: Dry run summary
+        if: ${{ inputs.dry_run }}
+        run: |
+          echo "=== DRY RUN ==="
+          echo "Would release helm chart with:"
+          echo "  operator image tag: ${{ steps.versions.outputs.operator_image_tag }}"
+          echo "  server image tag:   ${{ steps.versions.outputs.server_image_tag }}"
+
   publish:
+    needs: read-versions
     uses: ./.github/workflows/helm-publish.yml
     with:
-      operator_image_tag: ${{ inputs.operator_image_tag }}
-      server_image_tag: ${{ inputs.server_image_tag }}
+      operator_image_tag: ${{ needs.read-versions.outputs.operator_image_tag }}
+      server_image_tag: ${{ needs.read-versions.outputs.server_image_tag }}
       is_release: true
+      dry_run: ${{ inputs.dry_run }}
     secrets: inherit
     permissions:
       contents: read