deploy: Add ability to invalidate Google Cloud CDN

commands/deploy.go

@@ -70,7 +70,7 @@ documentation.
 	cc.cmd.Flags().Bool("confirm", false, "ask for confirmation before making changes to the target")
 	cc.cmd.Flags().Bool("dryRun", false, "dry run")
 	cc.cmd.Flags().Bool("force", false, "force upload of all files")
-	cc.cmd.Flags().Bool("invalidateCDN", true, "invalidate the CDN cache via the cloudFrontDistributionID listed in the deployment target")
+	cc.cmd.Flags().Bool("invalidateCDN", true, "invalidate the CDN cache listed in the deployment target")
 	cc.cmd.Flags().Int("maxDeletes", 256, "maximum # of files to delete, or -1 to disable")
 
 	return cc

deploy/deploy.go

@@ -249,12 +249,21 @@ func (d *Deployer) Deploy(ctx context.Context) error {
 		jww.FEEDBACK.Println("Success!")
 	}
 
-	if d.invalidateCDN && d.target.CloudFrontDistributionID != "" {
+	if d.invalidateCDN {
+		if d.target.CloudFrontDistributionID != "" {
 			jww.FEEDBACK.Println("Invalidating CloudFront CDN...")
 			if err := InvalidateCloudFront(ctx, d.target.CloudFrontDistributionID); err != nil {
 				jww.FEEDBACK.Printf("Failed to invalidate CloudFront CDN: %v\n", err)
 				return err
 			}
+		}
+		if d.target.GoogleCloudCDNOrigin != "" {
+			jww.FEEDBACK.Println("Invalidating Google Cloud CDN...")
+			if err := InvalidateGoogleCloudCDN(ctx, d.target.GoogleCloudCDNOrigin); err != nil {
+				jww.FEEDBACK.Printf("Failed to invalidate Google Cloud CDN: %v\n", err)
+				return err
+			}
+		}
 		jww.FEEDBACK.Println("Success!")
 	}
 	return nil

deploy/deployConfig.go

@@ -37,6 +37,10 @@ type target struct {
 	URL  string
 
 	CloudFrontDistributionID string
+
+	// GoogleCloudCDNOrigin specifies the Google Cloud project and CDN origin to
+	// invalidate when deploying this target.  It is specified as <project>/<origin>.
+	GoogleCloudCDNOrigin string
 }
 
 // matcher represents configuration to be applied to files whose paths match

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
+}

go.mod

@@ -63,6 +63,7 @@ require (
 	golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7 // indirect
 	golang.org/x/text v0.3.2
 	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 // indirect
+	google.golang.org/api v0.5.0
 	google.golang.org/appengine v1.6.0 // indirect
 	google.golang.org/genproto v0.0.0-20190522204451-c2c4e71fbf69 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect