read <- remote_storage

weed/pb/filer_pb/filer_pb_helper.go

@@ -147,3 +147,7 @@ func (fp *FilerConf_PathConf) Key() interface{} {
 	key, _ := proto.Marshal(fp)
 	return string(key)
 }
+func (fp *RemoteStorageLocation) Key() interface{} {
+	key, _ := proto.Marshal(fp)
+	return string(key)
+}

weed/pb/volume_server.proto

@@ -56,6 +56,8 @@ service VolumeServer {
     }
     rpc WriteNeedleBlob (WriteNeedleBlobRequest) returns (WriteNeedleBlobResponse) {
     }
+    rpc FetchAndWriteNeedle (FetchAndWriteNeedleRequest) returns (FetchAndWriteNeedleResponse) {
+    }
 
     rpc VolumeTailSender (VolumeTailSenderRequest) returns (stream VolumeTailSenderResponse) {
     }
@@ -276,6 +278,23 @@ message WriteNeedleBlobRequest {
 }
 message WriteNeedleBlobResponse {
 }
+message FetchAndWriteNeedleRequest {
+    uint32 volume_id = 1;
+    uint64 needle_id = 2;
+    int64 offset = 3;
+    int64 size = 4;
+    // remote info
+    string remote_type = 5;
+    string remote_name = 6;
+    string s3_access_key = 8;
+    string s3_secret_key = 9;
+    string s3_region = 10;
+    string s3_endpoint = 11;
+    string remote_bucket = 12;
+    string remote_key = 13;
+}
+message FetchAndWriteNeedleResponse {
+}
 
 message VolumeTailSenderRequest {
     uint32 volume_id = 1;