forked from percona/percona-backup-mongodb
/
awsutils.go
208 lines (177 loc) · 4.78 KB
/
awsutils.go
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package awsutils
import (
"fmt"
"io"
"log"
"testing"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
"github.com/percona/percona-backup-mongodb/storage"
"github.com/pkg/errors"
)
type FileNotFoundError struct {
err error
}
func NewFileNotFoundErrorf(args ...string) *FileNotFoundError {
if len(args) < 1 {
return &FileNotFoundError{
err: fmt.Errorf("file not found"),
}
}
return &FileNotFoundError{
err: fmt.Errorf(args[0], args[1:]),
}
}
func (f *FileNotFoundError) Error() string {
return f.err.Error()
}
func IsFileNotFoundError(err error) bool {
_, ok := err.(*FileNotFoundError)
return ok
}
func BucketExists(svc *s3.S3, bucketname string) (bool, error) {
input := &s3.ListBucketsInput{}
result, err := svc.ListBuckets(input)
if err != nil {
return false, err
}
for _, bucket := range result.Buckets {
if *bucket.Name == bucketname {
return true, nil
}
}
return false, nil
}
func CreateBucket(svc *s3.S3, bucket string) error {
_, err := svc.CreateBucket(&s3.CreateBucketInput{
Bucket: aws.String(bucket),
})
if err != nil {
return errors.Wrapf(err, "Unable to create bucket %q", bucket)
}
err = svc.WaitUntilBucketExists(&s3.HeadBucketInput{
Bucket: aws.String(bucket),
})
if err != nil {
return errors.Wrap(err, ("error while waiting the S3 bucket to be created"))
}
return nil
}
func DeleteFile(svc *s3.S3, bucket, filename string) error {
_, err := svc.DeleteObject(&s3.DeleteObjectInput{Bucket: aws.String(bucket), Key: aws.String(filename)})
if err != nil {
return errors.Wrapf(err, "unable to delete object %q from bucket %q", filename, bucket)
}
err = svc.WaitUntilObjectNotExists(&s3.HeadObjectInput{
Bucket: aws.String(bucket),
Key: aws.String(filename),
})
if err != nil {
return errors.Wrapf(err, "file %s was not deleted from the %s bucket", filename, bucket)
}
return nil
}
func DeleteBucket(svc *s3.S3, bucket string) error {
_, err := svc.DeleteBucket(&s3.DeleteBucketInput{
Bucket: aws.String(bucket),
})
if err != nil {
return errors.Wrapf(err, "unable to delete bucket %q", bucket)
}
err = svc.WaitUntilBucketNotExists(&s3.HeadBucketInput{
Bucket: aws.String(bucket),
})
if err != nil {
return errors.Wrapf(err, "error occurred while waiting for bucket to be deleted, %s", bucket)
}
return nil
}
func DownloadFile(svc s3iface.S3API, bucket, file string, writer io.WriterAt) (int64, error) {
downloader := s3manager.NewDownloaderWithClient(svc)
input := &s3.GetObjectInput{
Bucket: aws.String(bucket),
Key: aws.String(file),
}
return downloader.Download(writer, input)
}
func EmptyBucket(svc s3iface.S3API, bucket string) error {
iter := s3manager.NewDeleteListIterator(svc, &s3.ListObjectsInput{
Bucket: aws.String(bucket),
})
if err := s3manager.NewBatchDeleteWithClient(svc).Delete(aws.BackgroundContext(), iter); err != nil {
return errors.Wrapf(err, "Unable to delete objects from bucket %q", bucket)
}
return nil
}
func GetAWSSession() (*session.Session, error) {
return session.NewSession(&aws.Config{})
}
func GetAWSSessionFromStorage(opts storage.S3) (*session.Session, error) {
token := ""
sess, err := session.NewSession(&aws.Config{
Region: aws.String(opts.Region),
Endpoint: aws.String(opts.EndpointURL),
Credentials: credentials.NewStaticCredentials(
opts.Credentials.AccessKeyID,
opts.Credentials.SecretAccessKey,
token,
),
S3ForcePathStyle: aws.Bool(true),
})
return sess, err
}
func ListObjects(svc *s3.S3, bucket string) (*s3.ListObjectsOutput, error) {
input := &s3.ListObjectsInput{
Bucket: aws.String(bucket),
}
return svc.ListObjects(input)
}
func S3Stat(svc *s3.S3, bucket, filename string) (*s3.Object, error) {
obj := &s3.Object{}
err := svc.ListObjectsPages(
&s3.ListObjectsInput{
Bucket: aws.String(bucket),
Prefix: aws.String(filename),
RequestPayer: aws.String("requester"),
},
func(page *s3.ListObjectsOutput, lastPage bool) bool {
for _, item := range page.Contents {
if *item.Key == filename {
obj = item
return false
}
}
return true
},
)
if err != nil {
return nil, err
}
if obj != nil {
return obj, nil
}
return nil, nil
}
func UploadFileToS3(sess client.ConfigProvider, fr io.ReadSeeker, bucket, filename string) error {
svc := s3.New(sess)
input := &s3.PutObjectInput{
Body: fr,
Bucket: aws.String(bucket),
Key: aws.String(filename),
}
_, err := svc.PutObject(input)
if err != nil {
return err
}
return nil
}
func Diag(params ...interface{}) {
if testing.Verbose() {
log.Printf(params[0].(string), params[1:]...)
}
}