feat: thanos-io#135 Generate presigned URL

Signed-off-by: Suraj Patil <[email protected]>

providers/s3/s3.go

@@ -14,6 +14,7 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
@@ -536,6 +537,15 @@ func (b *Bucket) Delete(ctx context.Context, name string) error {
 	return b.client.RemoveObject(ctx, b.name, name, minio.RemoveObjectOptions{})
 }
 
+// Get Presigned URL for uploading tsdb blocks.
+func (b *Bucket) GetPresignedUploadURL(ctx context.Context, name string, expiry time.Duration) (string, error) {
+	presignedUrl, err := b.client.PresignedPutObject(ctx, b.name, name, expiry)
+	if err != nil {
+		return "", err
+	}
+	return presignedUrl.String(), nil
+}
+
 // IsObjNotFoundErr returns true if error means that object is not found. Relevant to Get operations.
 func (b *Bucket) IsObjNotFoundErr(err error) bool {
 	return minio.ToErrorResponse(errors.Cause(err)).Code == "NoSuchKey"