1 files changed, 49 insertions, 0 deletions
diff --git a/weed/server/volume_grpc_remote.go b/weed/server/volume_grpc_remote.go
new file mode 100644
index 000000000..0b6cd465b
--- /dev/null
+++ b/weed/server/volume_grpc_remote.go
@@ -0,0 +1,49 @@
+package weed_server
+
+import (
+	"context"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/chrislusf/seaweedfs/weed/remote_storage"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
+)
+
+func (vs *VolumeServer) FetchAndWriteNeedle(ctx context.Context, req *volume_server_pb.FetchAndWriteNeedleRequest) (resp *volume_server_pb.FetchAndWriteNeedleResponse, err error) {
+	resp = &volume_server_pb.FetchAndWriteNeedleResponse{}
+	v := vs.store.GetVolume(needle.VolumeId(req.VolumeId))
+	if v == nil {
+		return nil, fmt.Errorf("not found volume id %d", req.VolumeId)
+	}
+
+	remoteConf := &filer_pb.RemoteConf{
+		Type: req.RemoteType,
+		Name: req.RemoteName,
+		S3AccessKey: req.S3AccessKey,
+		S3SecretKey: req.S3SecretKey,
+		S3Region: req.S3Region,
+		S3Endpoint: req.S3Endpoint,
+	}
+
+	client, getClientErr := remote_storage.GetRemoteStorage(remoteConf)
+	if getClientErr != nil  {
+		return nil, fmt.Errorf("get remote client: %v", getClientErr)
+	}
+
+	remoteStorageLocation := &filer_pb.RemoteStorageLocation{
+		Name:   req.RemoteName,
+		Bucket: req.RemoteBucket,
+		Path:   req.RemoteKey,
+	}
+	data, ReadRemoteErr := client.ReadFile(remoteStorageLocation, req.Offset, req.Size)
+	if ReadRemoteErr != nil {
+		return nil, fmt.Errorf("read from remote %+v: %v", remoteStorageLocation, ReadRemoteErr)
+	}
+
+	if err = v.WriteNeedleBlob(types.NeedleId(req.NeedleId), data, types.Size(req.Size)); err != nil {
+		return nil, fmt.Errorf("write blob needle %d size %d: %v", req.NeedleId, req.Size, err)
+	}
+
+	return resp, nil
+}