1 files changed, 38 insertions, 0 deletions
diff --git a/weed/filer/remote_mapping.go b/weed/filer/remote_mapping.go
new file mode 100644
index 000000000..c23a60422
--- /dev/null
+++ b/weed/filer/remote_mapping.go
@@ -0,0 +1,38 @@
+package filer
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
+)
+
+func SaveMountMapping(filerClient filer_pb.FilerClient, dir string, remoteStorageLocation *remote_pb.RemoteStorageLocation) (err error) {
+
+	// read current mapping
+	var oldContent, newContent []byte
+	err = filerClient.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+		oldContent, err = ReadInsideFiler(client, DirectoryEtcRemote, REMOTE_STORAGE_MOUNT_FILE)
+		return err
+	})
+	if err != nil {
+		if err != filer_pb.ErrNotFound {
+			return fmt.Errorf("read existing mapping: %v", err)
+		}
+	}
+
+	// add new mapping
+	newContent, err = AddRemoteStorageMapping(oldContent, dir, remoteStorageLocation)
+	if err != nil {
+		return fmt.Errorf("add mapping %s~%s: %v", dir, remoteStorageLocation, err)
+	}
+
+	// save back
+	err = filerClient.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+		return SaveInsideFiler(client, DirectoryEtcRemote, REMOTE_STORAGE_MOUNT_FILE, newContent)
+	})
+	if err != nil {
+		return fmt.Errorf("save mapping: %v", err)
+	}
+
+	return nil
+}
+\ No newline at end of file