1 files changed, 100 insertions, 0 deletions
diff --git a/weed/server/volume_grpc_tier_upload.go b/weed/server/volume_grpc_tier_upload.go
new file mode 100644
index 000000000..c9694df59
--- /dev/null
+++ b/weed/server/volume_grpc_tier_upload.go
@@ -0,0 +1,100 @@
+package weed_server
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage/backend"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+)
+
+// VolumeTierMoveDatToRemote copy dat file to a remote tier
+func (vs *VolumeServer) VolumeTierMoveDatToRemote(req *volume_server_pb.VolumeTierMoveDatToRemoteRequest, stream volume_server_pb.VolumeServer_VolumeTierMoveDatToRemoteServer) error {
+
+	// find existing volume
+	v := vs.store.GetVolume(needle.VolumeId(req.VolumeId))
+	if v == nil {
+		return fmt.Errorf("volume %d not found", req.VolumeId)
+	}
+
+	// verify the collection
+	if v.Collection != req.Collection {
+		return fmt.Errorf("existing collection:%v unexpected input: %v", v.Collection, req.Collection)
+	}
+
+	// locate the disk file
+	diskFile, ok := v.DataBackend.(*backend.DiskFile)
+	if !ok {
+		return fmt.Errorf("volume %d is not on local disk", req.VolumeId)
+	}
+
+	// check valid storage backend type
+	backendStorage, found := backend.BackendStorages[req.DestinationBackendName]
+	if !found {
+		var keys []string
+		for key := range backend.BackendStorages {
+			keys = append(keys, key)
+		}
+		return fmt.Errorf("destination %s not found, suppported: %v", req.DestinationBackendName, keys)
+	}
+
+	// check whether the existing backend storage is the same as requested
+	// if same, skip
+	backendType, backendId := backend.BackendNameToTypeId(req.DestinationBackendName)
+	for _, remoteFile := range v.GetVolumeInfo().GetFiles() {
+		if remoteFile.BackendType == backendType && remoteFile.BackendId == backendId {
+			return fmt.Errorf("destination %s already exists", req.DestinationBackendName)
+		}
+	}
+
+	startTime := time.Now()
+	fn := func(progressed int64, percentage float32) error {
+		now := time.Now()
+		if now.Sub(startTime) < time.Second {
+			return nil
+		}
+		startTime = now
+		return stream.Send(&volume_server_pb.VolumeTierMoveDatToRemoteResponse{
+			Processed:           progressed,
+			ProcessedPercentage: percentage,
+		})
+	}
+
+	// remember the file original source
+	attributes := make(map[string]string)
+	attributes["volumeId"] = v.Id.String()
+	attributes["collection"] = v.Collection
+	attributes["ext"] = ".dat"
+	// copy the data file
+	key, size, err := backendStorage.CopyFile(diskFile.File, attributes, fn)
+	if err != nil {
+		return fmt.Errorf("backend %s copy file %s: %v", req.DestinationBackendName, diskFile.Name(), err)
+	}
+
+	// save the remote file to volume tier info
+	v.GetVolumeInfo().Files = append(v.GetVolumeInfo().GetFiles(), &volume_server_pb.RemoteFile{
+		BackendType:  backendType,
+		BackendId:    backendId,
+		Key:          key,
+		Offset:       0,
+		FileSize:     uint64(size),
+		ModifiedTime: uint64(time.Now().Unix()),
+		Extension:    ".dat",
+	})
+
+	if err := v.SaveVolumeInfo(); err != nil {
+		return fmt.Errorf("volume %d fail to save remote file info: %v", v.Id, err)
+	}
+
+	if err := v.LoadRemoteFile(); err != nil {
+		return fmt.Errorf("volume %d fail to load remote file: %v", v.Id, err)
+	}
+
+	if !req.KeepLocalDatFile {
+		os.Remove(v.FileName() + ".dat")
+	}
+
+	return nil
+}