Go에서 AWS S3 사용: 전체 가이드

go get -u github.com/aws/aws-sdk-go/aws
go get -u github.com/aws/aws-sdk-go/aws/session
go get -u github.com/aws/aws-sdk-go/service/s3

[default]
aws_access_key_id = Access_Key
aws_secret_access_key = Secret_Access_Key

sess, err := session.NewSession(&aws.Config{
    Region: aws.String(region)},
)
s3Svc := s3.New(sess)

result, err := s3Svc.ListBuckets(nil)
if err != nil {
    log.Fatalf("failed to list buckets, %v", err)
}

for _, bucket := range result.Buckets {
    fmt.Printf("%s : %s
", aws.StringValue(bucket.Name), bucket.CreationDate)
}

_, err := s3Svc.CreateBucket(&s3.CreateBucketInput{
    Bucket: aws.String(bucketName),
})
if err != nil {
    log.Fatalf("failed to create bucket %s, %v", bucketName, err)
}

file, err := os.Open(filename)
if err != nil {
    log.Fatalf("failed to open file %q, %v", filename, err)
}

defer func() {
    if err = file.Close(); err != nil {
        log.Fatalf("failed to close file %q, %v", filename, err)
    }
}()

_, err = s3Svc.PutObject(&s3.PutObjectInput{
    Body:   file,
    Bucket: aws.String(bucketName),
    Key:    aws.String(filepath.Base(filename)),
})
if err != nil {
    log.Fatalf("failed to upload file %q to bucket %q, %v", filename, bucketName, err)
}

file, err := os.Create(filename)
if err != nil {
    log.Fatalf("failed to create file %q, %v", filename, err)
}

defer func() {
    if err = file.Close(); err != nil {
        log.Fatalf("failed to close file %q, %v", filename, err)
    }
}()

result, err := s3Svc.GetObject(&s3.GetObjectInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectName),
})
if err != nil {
    log.Fatalf("failed to download file %q from bucket %q, %v", objectName, bucketName, err)
}

if _, err = io.Copy(file, result.Body); err != nil {
    log.Fatalf("failed to download file %q from bucket %q, %v", objectName, bucketName, err)
}