rename stream apis (#257)

Author: shivaji-kharse

protos/api.v25.proto

@@ -29,8 +29,8 @@ service Dgraph {
   rpc DropNamespace(DropNamespaceRequest) returns (DropNamespaceResponse) {}
   rpc UpdateNamespace(UpdateNamespaceRequest) returns (UpdateNamespaceResponse) {}
   rpc ListNamespaces(ListNamespacesRequest) returns (ListNamespacesResponse) {}
-  rpc InitiateSnapshotStream (InitiateSnapshotStreamRequest)    returns (InitiateSnapshotStreamResponse) {}
-  rpc StreamSnapshot(stream StreamSnapshotRequest) returns (StreamSnapshotResponse) {}
+  rpc InitiatePDirStream (InitiatePDirStreamRequest)    returns (InitiatePDirStreamResponse) {}
+  rpc StreamPDir(stream StreamPDirRequest) returns (StreamPDirResponse) {}
 }
 
 message PingRequest {}
@@ -161,22 +161,22 @@ message Namespace {
   uint64 id = 2;
 }
 
-message InitiateSnapshotStreamRequest {}
+message InitiatePDirStreamRequest {}
 
-message InitiateSnapshotStreamResponse {
+message InitiatePDirStreamResponse {
     repeated uint32 groups = 1;
 }
 
-message StreamSnapshotRequest {
+message StreamPDirRequest {
   uint32 group_id =1;
-  KVS pairs = 2;
+  StreamPacket stream_packet = 2;
 }
 
-message StreamSnapshotResponse {
+message StreamPDirResponse {
     bool done = 1;
 }
 
-message KVS {
+message StreamPacket {
   bytes data = 1;
   bool done = 2;
 }