make_public.go

// Copyright 2020 Google LLC
//
// 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
//
//     https://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 objects

// [START storage_make_public]
import (
	"context"
	"fmt"
	"io"
	"time"

	"cloud.google.com/go/storage"
	"google.golang.org/api/option"
)

// makePublic gives all users read access to an object.
func makePublic(w io.Writer, bucket, object string, entity storage.ACLEntity, role storage.ACLRole) error {
	// bucket := "bucket-name"
	// object := "object-name"
	ctx := context.Background()
	client, err := storage.NewClient(ctx, option.WithEndpoint("https://storage.mtls.googleapis.com/storage/v1/"))
	if err != nil {
		return fmt.Errorf("storage.NewClient: %v", err)
	}
	defer client.Close()

	ctx, cancel := context.WithTimeout(ctx, time.Second*10)
	defer cancel()

	acl := client.Bucket(bucket).Object(object).ACL()
	if err := acl.Set(ctx, entity, role); err != nil {
		return fmt.Errorf("ACLHandle.Set: %v", err)
	}
	fmt.Fprintf(w, "Blob %v is now publicly accessible.\n", object)
	return nil
}

// [END storage_make_public]