3 files changed, 55 insertions, 4 deletions
diff --git a/weed/server/filer_server.go b/weed/server/filer_server.go
index d7afaa65a..534bc4840 100644
--- a/weed/server/filer_server.go
+++ b/weed/server/filer_server.go
@@ -149,6 +149,8 @@ func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, option *FilerOption)
 
 	fs.filer.LoadFilerConf()
 
+	fs.filer.LoadRemoteStorageConfAndMapping()
+
 	grace.OnInterrupt(func() {
 		fs.filer.Shutdown()
 	})
diff --git a/weed/server/filer_server_handlers_read.go b/weed/server/filer_server_handlers_read.go
index 957e08855..86454f8c5 100644
--- a/weed/server/filer_server_handlers_read.go
+++ b/weed/server/filer_server_handlers_read.go
@@ -101,7 +101,7 @@ func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 
 	//Seaweed custom header are not visible to Vue or javascript
 	seaweedHeaders := []string{}
-	for header, _ := range w.Header() {
+	for header := range w.Header() {
 		if strings.HasPrefix(header, "Seaweed-") {
 			seaweedHeaders = append(seaweedHeaders, header)
 		}
@@ -163,9 +163,18 @@ func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 			}
 			return err
 		}
-		err = filer.StreamContent(fs.filer.MasterClient, writer, entry.Chunks, offset, size)
-		if err != nil {
-			glog.Errorf("failed to stream content %s: %v", r.URL, err)
+		if entry.IsInRemoteOnly() {
+			var data []byte
+			data, err = fs.filer.ReadRemote(entry, offset, size)
+			if err != nil {
+				glog.Errorf("failed to read remote %s: %v", r.URL, err)
+			}
+			_, err = w.Write(data)
+		} else {
+			err = filer.StreamContent(fs.filer.MasterClient, writer, entry.Chunks, offset, size)
+			if err != nil {
+				glog.Errorf("failed to stream content %s: %v", r.URL, err)
+			}
 		}
 		return err
 	})
diff --git a/weed/server/volume_grpc_read_write.go b/weed/server/volume_grpc_read_write.go
index 988e9e145..42941250d 100644
--- a/weed/server/volume_grpc_read_write.go
+++ b/weed/server/volume_grpc_read_write.go
@@ -3,7 +3,9 @@ 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"
 )
@@ -36,3 +38,41 @@ func (vs *VolumeServer) WriteNeedleBlob(ctx context.Context, req *volume_server_
 
 	return resp, nil
 }
+
+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
+}