adding basic grpc to volume server

weed/server/volume_grpc_server.go

@@ -0,0 +1,78 @@
+package weed_server
+
+import (
+	"context"
+	"net/http"
+	"time"
+
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage"
+)
+
+func (vs *VolumeServer) BatchDelete(ctx context.Context, req *volume_server_pb.BatchDeleteRequest) (*volume_server_pb.BatchDeleteResponse, error) {
+
+	resp := &volume_server_pb.BatchDeleteResponse{}
+
+	now := uint64(time.Now().Unix())
+
+	for _, fid := range req.FileIds {
+		vid, id_cookie, err := operation.ParseFileId(fid)
+		if err != nil {
+			resp.Results = append(resp.Results, &volume_server_pb.DeleteResult{
+				FileId: fid,
+				Status: http.StatusBadRequest,
+				Error:  err.Error()})
+			continue
+		}
+
+		n := new(storage.Needle)
+		volumeId, _ := storage.NewVolumeId(vid)
+		n.ParsePath(id_cookie)
+
+		cookie := n.Cookie
+		if _, err := vs.store.ReadVolumeNeedle(volumeId, n); err != nil {
+			resp.Results = append(resp.Results, &volume_server_pb.DeleteResult{
+				FileId: fid,
+				Status: http.StatusNotFound,
+				Error:  err.Error(),
+			})
+			continue
+		}
+
+		if n.IsChunkedManifest() {
+			resp.Results = append(resp.Results, &volume_server_pb.DeleteResult{
+				FileId: fid,
+				Status: http.StatusNotAcceptable,
+				Error:  "ChunkManifest: not allowed in batch delete mode.",
+			})
+			continue
+		}
+
+		if n.Cookie != cookie {
+			resp.Results = append(resp.Results, &volume_server_pb.DeleteResult{
+				FileId: fid,
+				Status: http.StatusBadRequest,
+				Error:  "File Random Cookie does not match.",
+			})
+			break
+		}
+		n.LastModified = now
+		if size, err := vs.store.Delete(volumeId, n); err != nil {
+			resp.Results = append(resp.Results, &volume_server_pb.DeleteResult{
+				FileId: fid,
+				Status: http.StatusInternalServerError,
+				Error:  err.Error()},
+			)
+		} else {
+			resp.Results = append(resp.Results, &volume_server_pb.DeleteResult{
+				FileId: fid,
+				Status: http.StatusAccepted,
+				Size:   size},
+			)
+		}
+	}
+
+	return resp, nil
+
+}