Add storage root folder prefix to startAfter flag (#270)

* fix scan after flag

* linter warnings

* rollback config

pkg/service/storage/azure.go

@@ -30,7 +30,7 @@ func (a *AzureStorageAccessor) createReader(
 	opts := []azure.Opt{
 		azure.WithValidator(filter),
 		azure.WithNestedDir(),
-		azure.WithStartAfter(startScanFrom),
+		azure.WithStartAfter(filepath.Join(azures.Path, startScanFrom)),
 	}
 	fullPath := filepath.Join(azures.Path, path)
 	if isFile {

pkg/service/storage/gcp.go

@@ -30,7 +30,7 @@ func (a *GcpStorageAccessor) createReader(
 	opts := []gcp.Opt{
 		gcp.WithValidator(filter),
 		gcp.WithNestedDir(),
-		gcp.WithStartOffset(startScanFrom),
+		gcp.WithStartOffset(filepath.Join(gcps.Path, startScanFrom)),
 	}
 	fullPath := filepath.Join(gcps.Path, path)
 	if isFile {

pkg/service/storage/operations.go

@@ -3,8 +3,9 @@ package storage
 import (
 	"bytes"
 	"context"
-	"fmt"
 	"io"
+	"path/filepath"
+	"strconv"
 	"time"
 
 	"github.com/aerospike/aerospike-backup-service/v2/pkg/model"
@@ -49,7 +50,8 @@ func ReadFiles(ctx context.Context, storage model.Storage, path string, filterSt
 ) ([]*bytes.Buffer, error) {
 	var startScanFrom string
 	if fromTime != nil {
-		startScanFrom = fmt.Sprintf("%s/%d", path, fromTime.UnixMilli()-1) // -1 to ensure filter is greater or equal.
+		fromTimeStr := strconv.FormatInt(fromTime.UnixMilli()-1, 10) // -1 to ensure filter is greater or equal.
+		startScanFrom = filepath.Join(path, fromTimeStr)
 	}
 
 	reader, err := CreateReader(ctx, storage, path, false, newNameValidator(filterStr), startScanFrom)

pkg/service/storage/s3.go

@@ -30,7 +30,7 @@ func (a *S3StorageAccessor) createReader(
 	opts := []s3.Opt{
 		s3.WithValidator(filter),
 		s3.WithNestedDir(),
-		s3.WithStartAfter(startScanFrom),
+		s3.WithStartAfter(filepath.Join(s3s.Path, startScanFrom)),
 	}
 	fullPath := filepath.Join(s3s.Path, path)
 	if isFile {