3 changed files with 203 additions and 0 deletions
@@ -25,6 +25,22 @@ jobs:
      - name: Install dependencies
        run: npm ci

+      - name: Build plugin
+        run: npm run build
+
+      - name: Setup kubectl
+        uses: azure/setup-kubectl@v4
+
+      - name: Deploy plugin to Headlamp
+        env:
+          HEADLAMP_URL: ${{ secrets.HEADLAMP_URL || 'http://headlamp.kube-system.svc.cluster.local' }}
+          HEADLAMP_NS: kube-system
+          HEADLAMP_DEPLOY: headlamp
+          PLUGIN_NAME: polaris
+        run: |
+          chmod +x scripts/deploy-plugin-to-headlamp.sh
+          ./scripts/deploy-plugin-to-headlamp.sh
+
      - name: Preflight — verify Headlamp and plugin version
        env:
          HEADLAMP_URL: ${{ secrets.HEADLAMP_URL || 'http://headlamp.kube-system.svc.cluster.local' }}
@@ -0,0 +1,53 @@
+---
+# RBAC for the self-hosted GitHub Actions runner ServiceAccount to deploy
+# plugins to Headlamp via ConfigMap + deployment patch.
+#
+# This grants ONLY the permissions needed by scripts/deploy-plugin-to-headlamp.sh:
+#   - configmaps: create/get/update (store the plugin tarball)
+#   - deployments: get/patch (add the init container that extracts the plugin)
+#   - replicasets: get/list (for kubectl rollout status)
+#
+# No pod exec or pod cp access is required.
+#
+# Apply with:
+#   kubectl apply -f deployment/e2e-runner-rbac.yaml
+#
+# The runner SA name comes from the ARC (Actions Runner Controller) deployment.
+# Adjust the serviceaccount name/namespace if your runner uses a different identity.
+
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: e2e-plugin-deployer
+  namespace: kube-system
+rules:
+  # Store plugin tarball in a ConfigMap
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["create", "get", "update", "patch"]
+  # Patch the Headlamp deployment to add the init container
+  - apiGroups: ["apps"]
+    resources: ["deployments"]
+    verbs: ["get", "patch"]
+  # Required for kubectl rollout status
+  - apiGroups: ["apps"]
+    resources: ["replicasets"]
+    verbs: ["get", "list"]
+  # Required for rollout status pod readiness check
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["get", "list"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: e2e-plugin-deployer
+  namespace: kube-system
+subjects:
+  - kind: ServiceAccount
+    name: local-ubuntu-latest-gha-rs-no-permission
+    namespace: arc-runners
+roleRef:
+  kind: Role
+  name: e2e-plugin-deployer
+  apiGroup: rbac.authorization.k8s.io
@@ -0,0 +1,134 @@
+#!/usr/bin/env bash
+# Deploy the built plugin to a live Headlamp instance via ConfigMap + init container.
+#
+# This script packages the built plugin as a tarball, stores it in a Kubernetes
+# ConfigMap, and patches the Headlamp deployment to add an init container that
+# extracts the plugin into the static-plugins volume before Headlamp starts.
+#
+# No kubectl exec or kubectl cp is used — only standard Kubernetes API operations
+# (create configmap, patch deployment, rollout status).
+#
+# Prerequisites:
+#   - kubectl configured with access to the Headlamp namespace
+#   - Plugin already built (npm run build → dist/)
+#   - Headlamp deployment uses a "static-plugins" volume (emptyDir)
+#
+# Environment variables (all optional, with defaults):
+#   HEADLAMP_URL      — Headlamp URL for readiness check
+#   HEADLAMP_NS       — Kubernetes namespace (default: kube-system)
+#   HEADLAMP_DEPLOY   — Headlamp deployment name (default: headlamp)
+#   PLUGIN_NAME       — Plugin directory name (default: polaris)
+#
+# Usage:
+#   npm run build
+#   ./scripts/deploy-plugin-to-headlamp.sh
+
+set -euo pipefail
+
+HEADLAMP_URL="${HEADLAMP_URL:-http://headlamp.kube-system.svc.cluster.local}"
+HEADLAMP_NS="${HEADLAMP_NS:-kube-system}"
+HEADLAMP_DEPLOY="${HEADLAMP_DEPLOY:-headlamp}"
+PLUGIN_NAME="${PLUGIN_NAME:-polaris}"
+CONFIGMAP_NAME="headlamp-e2e-plugin-${PLUGIN_NAME}"
+
+if [ ! -d "dist" ]; then
+  echo "Error: dist/ not found. Run 'npm run build' first." >&2
+  exit 1
+fi
+
+# --- Step 1: Package plugin as tarball ---
+echo "Packaging plugin..."
+TARBALL=$(mktemp /tmp/${PLUGIN_NAME}-plugin-XXXXXX.tar.gz)
+tar czf "$TARBALL" dist/ package.json
+echo "  tarball size: $(du -h "$TARBALL" | cut -f1)"
+
+# ConfigMap binary data limit is ~1MB
+TARBALL_SIZE=$(stat -c%s "$TARBALL" 2>/dev/null || stat -f%z "$TARBALL")
+if [ "$TARBALL_SIZE" -gt 1000000 ]; then
+  echo "Error: Plugin tarball (${TARBALL_SIZE} bytes) exceeds ConfigMap 1MB limit." >&2
+  echo "Consider minifying the build output or splitting into multiple ConfigMaps." >&2
+  rm -f "$TARBALL"
+  exit 1
+fi
+
+# --- Step 2: Store tarball in a ConfigMap ---
+echo "Creating ConfigMap ${CONFIGMAP_NAME}..."
+kubectl create configmap "$CONFIGMAP_NAME" \
+  --from-file="plugin.tar.gz=${TARBALL}" \
+  -n "$HEADLAMP_NS" \
+  --dry-run=client -o yaml | kubectl apply -f -
+rm -f "$TARBALL"
+
+# --- Step 3: Patch the Headlamp deployment ---
+# Adds an init container that extracts the plugin tarball into the static-plugins
+# volume. Uses strategic merge — init containers merge by name, so re-running
+# this script updates the existing init container rather than adding duplicates.
+# A timestamp annotation forces a rollout even if the patch shape is unchanged.
+echo "Patching Headlamp deployment..."
+DEPLOY_TIMESTAMP=$(date -u +%Y%m%dT%H%M%SZ)
+
+kubectl patch deployment "$HEADLAMP_DEPLOY" -n "$HEADLAMP_NS" --type=strategic -p "$(cat <<EOF
+{
+  "spec": {
+    "template": {
+      "metadata": {
+        "annotations": {
+          "e2e-plugin-deploy-ts": "${DEPLOY_TIMESTAMP}"
+        }
+      },
+      "spec": {
+        "initContainers": [
+          {
+            "name": "install-e2e-plugin",
+            "image": "busybox:latest",
+            "command": [
+              "sh", "-c",
+              "mkdir -p /plugins/${PLUGIN_NAME} && cd /plugins/${PLUGIN_NAME} && tar xzf /plugin-src/plugin.tar.gz && cp -a dist/* . && rm -rf dist && echo 'Plugin extracted successfully' && ls -la"
+            ],
+            "volumeMounts": [
+              {"name": "static-plugins", "mountPath": "/plugins"},
+              {"name": "e2e-plugin-src", "mountPath": "/plugin-src", "readOnly": true}
+            ]
+          }
+        ],
+        "volumes": [
+          {
+            "name": "e2e-plugin-src",
+            "configMap": {
+              "name": "${CONFIGMAP_NAME}"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
+EOF
+)"
+
+# --- Step 4: Wait for rollout ---
+echo "Waiting for rollout..."
+kubectl rollout status deployment/"$HEADLAMP_DEPLOY" -n "$HEADLAMP_NS" --timeout=180s
+
+# --- Step 5: Verify Headlamp is ready ---
+echo "Verifying Headlamp readiness..."
+for i in $(seq 1 30); do
+  HTTP_CODE=$(curl -s -o /dev/null -w '%{http_code}' --connect-timeout 5 "$HEADLAMP_URL" || true)
+  if [ "$HTTP_CODE" = "200" ]; then
+    echo "Headlamp is ready (HTTP 200)"
+
+    # Verify plugin is loaded
+    PLUGIN_CHECK=$(curl -sf "$HEADLAMP_URL/plugins" 2>/dev/null || echo "[]")
+    if echo "$PLUGIN_CHECK" | grep -q "$PLUGIN_NAME"; then
+      echo "Plugin '${PLUGIN_NAME}' is loaded"
+    else
+      echo "::warning::Plugin '${PLUGIN_NAME}' not found in /plugins response"
+    fi
+    exit 0
+  fi
+  echo "  attempt $i/30 — HTTP $HTTP_CODE"
+  sleep 5
+done
+
+echo "Error: Headlamp did not recover after plugin deploy" >&2
+exit 1