1 files changed, 38 insertions, 0 deletions
diff --git a/weed/server/volume_grpc_tier.go b/weed/server/volume_grpc_tier.go
new file mode 100644
index 000000000..d910db740
--- /dev/null
+++ b/weed/server/volume_grpc_tier.go
@@ -0,0 +1,38 @@
+package weed_server
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage/backend"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+)
+
+// VolumeTierCopyDatToRemote copy dat file to a remote tier
+func (vs *VolumeServer) VolumeTierCopyDatToRemote(ctx context.Context, req *volume_server_pb.VolumeTierCopyDatToRemoteRequest) (*volume_server_pb.VolumeTierCopyDatToRemoteResponse, error) {
+
+	v := vs.store.GetVolume(needle.VolumeId(req.VolumeId))
+	if v == nil {
+		return nil, fmt.Errorf("volume %d not found", req.VolumeId)
+	}
+
+	if v.Collection != req.Collection {
+		return nil, fmt.Errorf("existing collection:%v unexpected input: %v", v.Collection, req.Collection)
+	}
+
+	diskFile, ok := v.DataBackend.(*backend.DiskFile)
+	if !ok {
+		return nil, fmt.Errorf("volume %d is not on local disk", req.VolumeId)
+	}
+	err := uploadFileToRemote(ctx, req, diskFile.File)
+
+	return &volume_server_pb.VolumeTierCopyDatToRemoteResponse{}, err
+}
+
+func uploadFileToRemote(ctx context.Context, req *volume_server_pb.VolumeTierCopyDatToRemoteRequest, f *os.File) error {
+	println("copying dat file of", f.Name(), "to remote")
+
+	return nil
+}
+\ No newline at end of file