deploy: Add ability to invalidate Google Cloud CDN

deploy/google.go

@@ -0,0 +1,37 @@
+// Copyright 2019 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package deploy
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"google.golang.org/api/compute/v1"
+)
+
+// Invalidate all of the content in a Google Cloud CDN distribution.
+func InvalidateGoogleCloudCDN(ctx context.Context, origin string) error {
+	parts := strings.Split(origin, "/")
+	if len(parts) != 2 {
+		return fmt.Errorf("origin must be <project>/<origin>")
+	}
+	service, err := compute.NewService(ctx)
+	if err != nil {
+		return err
+	}
+	rule := &compute.CacheInvalidationRule{Path: "/*"}
+	_, err = service.UrlMaps.InvalidateCache(parts[0], parts[1], rule).Context(ctx).Do()
+	return err
+}