This example creates an Amazon S3 bucket.

go run CreateBucketv2.go -b BUCKET

  • BUCKET is the name of the bucket to create.

The unit test accepts a similar value in config.json.

Source code

// Copyright, Inc. or its affiliates. All Rights Reserved.
// SPDX - License - Identifier: Apache - 2.0
package main

import (


// S3CreateBucketAPI defines the interface for the CreateBucket function.
// We use this interface to test the function using a mocked service.
type S3CreateBucketAPI interface {
	CreateBucket(ctx context.Context,
		params *s3.CreateBucketInput,
		optFns ...func(*s3.Options)) (*s3.CreateBucketOutput, error)

// MakeBucket creates an Amazon Simple Storage Service (Amazon S3) bucket.
// Inputs:
//     c is the context of the method call, which includes the AWS Region
//     api is the interface that defines the method call
//     input defines the input arguments to the service call.
// Output:
//     If success, a CreateBucketOutput object containing the result of the service call and nil.
//     Otherwise, nil and an error from the call to CreateBucket.
func MakeBucket(c context.Context, api S3CreateBucketAPI, input *s3.CreateBucketInput) (*s3.CreateBucketOutput, error) {
	return api.CreateBucket(c, input)

func main() {
	bucket := flag.String("b", "", "The name of the bucket")

	if *bucket == "" {
		fmt.Println("You must supply a bucket name (-b BUCKET)")

	cfg, err := config.LoadDefaultConfig(context.TODO())
	if err != nil {
		panic("configuration error, " + err.Error())

	client := s3.NewFromConfig(cfg)

	input := &s3.CreateBucketInput{
		Bucket: bucket,

	_, err = MakeBucket(context.TODO(), client, input)
	if err != nil {
		fmt.Println("Could not create bucket " + *bucket)

See the complete example in GitHub.