Allow to disable optional initialization steps: --no-multipart-expire…

… --no-detect

internal/backend_s3.go

@@ -393,6 +393,10 @@ func (s *S3Backend) Init(key string) error {
 	var isAws bool
 	var err error
 
+	if s.config.NoDetect {
+		return nil
+	}
+
 	if !s.config.RegionSet {
 		err, _ = s.detectBucketLocationByHEAD()
 		if err == nil {
@@ -1187,6 +1191,10 @@ func (s *S3Backend) MultipartBlobAbort(param *MultipartBlobCommitInput) (*Multip
 }
 
 func (s *S3Backend) MultipartExpire(param *MultipartExpireInput) (*MultipartExpireOutput, error) {
+	if s.config.NoExpireMultipart {
+		return &MultipartExpireOutput{}, nil
+	}
+
 	mpu, err := s.ListMultipartUploads(&s3.ListMultipartUploadsInput{
 		Bucket: &s.bucket,
 	})

internal/cfg/conf_s3.go

@@ -54,8 +54,11 @@ type S3Config struct {
 	ColdMinSize  uint64
 	MultipartAge time.Duration
 
+	NoExpireMultipart bool
+
 	MultipartCopyThreshold uint64
 
+	NoDetect   bool
 	UseSSE     bool
 	UseKMS     bool
 	KMSKeyID   string

internal/cfg/flags.go

@@ -254,6 +254,16 @@ MISC OPTIONS:
 			Value: "",
 		},
 
+		cli.BoolFlag{
+			Name:  "no-detect",
+			Usage: "Turn off bucket location and signature algorithm autodetection on start",
+		},
+
+		cli.BoolFlag{
+			Name:  "no-expire-multipart",
+			Usage: "Do not expire multipart uploads older than --multipart-age on start",
+		},
+
 		cli.StringFlag{
 			Name:  "multipart-age",
 			Usage: "Multipart uploads older than this value will be deleted on start",
@@ -947,6 +957,9 @@ func PopulateFlags(c *cli.Context) (ret *FlagStorage) {
 
 		config.MultipartCopyThreshold = uint64(c.Int("multipart-copy-threshold")) * 1024 * 1024
 
+		config.NoExpireMultipart = c.Bool("no-expire-multipart")
+		config.NoDetect = c.Bool("no-detect")
+
 		config.SDKMaxRetries = c.Int("sdk-max-retries")
 		config.SDKMinRetryDelay = c.Duration("sdk-min-retry-delay")
 		config.SDKMaxRetryDelay = c.Duration("sdk-max-retry-delay")