Actions(ephemeral-instances): Migrate to Vault (#104848)

.github/workflows/ephemeral-instances-pr-comment.yml

@@ -1,4 +1,5 @@
-name: 'Ephemeral instances'
+name: "Ephemeral instances"
+
 on:
   issue_comment:
     types: [created]
@@ -8,62 +9,46 @@ on:
 permissions: {}
 
 jobs:
-  config:
-    runs-on: "ubuntu-latest"
-    outputs:
-      has-secrets: ${{ steps.check.outputs.has-secrets }}
-    steps:
-      - name: "Check for secrets"
-        id: check
-        shell: bash
-        run: |
-          if [ -n "${{ (secrets.EI_APP_ID != '' &&
-                        secrets.EI_APP_PRIVATE_KEY != '' &&
-                        secrets.EI_GCOM_HOST != '' &&
-                        secrets.EI_GCOM_TOKEN != '' &&
-                        secrets.EI_EPHEMERAL_INSTANCES_REGISTRY != '' &&
-                        secrets.EI_GCP_SERVICE_ACCOUNT_KEY_BASE64 != '' &&
-                        secrets.EI_EPHEMERAL_ORG_ID != ''
-                        ) || '' }}" ]; then
-            echo "has-secrets=1" >> "$GITHUB_OUTPUT"
-          fi
-
-  handle-pull-request-event:
-    permissions:
-      id-token: write
-      contents: read
-      pull-requests: write
-    needs: config
-    if: needs.config.outputs.has-secrets &&
-        ${{ github.event.issue.pull_request && (startsWith(github.event.comment.body, '/deploy-to-hg') || github.event.action == 'closed') }}
+  handle-ephemeral-instances:
+    if: ${{ github.event.issue.pull_request && (startsWith(github.event.comment.body, '/deploy-to-hg') || github.event.action == 'closed') && github.repository_owner == 'grafana' }}
     runs-on:
       labels: ubuntu-latest-8-cores
     continue-on-error: true
+    permissions:
+      # For commenting.
+      pull-requests: write
+      # No contents permission is needed because we will impersonate an app to create the PR instead.
+      id-token: write # required for vault access
+
     steps:
+      - name: Get vault secrets
+        id: vault-secrets
+        uses: grafana/shared-workflows/actions/get-vault-secrets@main
+        with:
+          # Secrets placed in ci/repo/grafana/grafana/
+          repo_secrets: |
+            APP_ID=ephemeral-instances-bot:app-id
+            APP_PEM=ephemeral-instances-bot:app-private-key
+            GCOM_HOST=ephemeral-instances-bot:gcom-host
+            GCOM_TOKEN=ephemeral-instances-bot:gcom-token
+            REGISTRY=ephemeral-instances-bot:registry
+            GCP_SA_ACCOUNT_KEY_BASE64=ephemeral-instances-bot:sa-key
+
       - name: Generate a GitHub app installation token
         id: generate_token
-        uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92
+        uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92 # v1.8.0
         with:
-          app_id: ${{ secrets.EI_APP_ID }}
-          private_key: ${{ secrets.EI_APP_PRIVATE_KEY }}
-
-      - name: Checkout ephemeral instances repository
-        uses: actions/checkout@v4
-        with:
-          repository: grafana/ephemeral-grafana-instances-github-action
-          token: ${{ steps.generate_token.outputs.token }}
-          ref: main
-          path: ephemeral
-          persist-credentials: false
+          app_id: ${{ env.APP_ID }}
+          private_key: ${{ env.APP_PEM }}
 
       - name: build and deploy ephemeral instance
-        uses: ./ephemeral
+        uses: grafana/ephemeral-grafana-instances-github-action@main
         with:
-          github-token:  ${{ steps.generate_token.outputs.token }}
-          gcom-host: ${{ secrets.EI_GCOM_HOST }}
-          gcom-token: ${{ secrets.EI_GCOM_TOKEN }}
-          registry: "${{ secrets.EI_EPHEMERAL_INSTANCES_REGISTRY }}"
-          gcp-service-account-key: "${{ secrets.EI_GCP_SERVICE_ACCOUNT_KEY_BASE64 }}"
-          ephemeral-org-id: "${{ secrets.EI_EPHEMERAL_ORG_ID }}"
+          github-token: ${{ steps.generate_token.outputs.token }}
+          gcom-host: ${{ env.GCOM_HOST }}
+          gcom-token: ${{ env.GCOM_TOKEN }}
+          registry: "${{ env.REGISTRY }}"
+          gcp-service-account-key: ${{ env.GCP_SA_ACCOUNT_KEY_BASE64 }}
+          ephemeral-org-id: ephemeral
           oss-or-enterprise: oss
           verbose: true