Add 'notification' protobuf

Author: apeters1971

Rpc.proto

@@ -32,7 +32,10 @@ option go_package = "go-eosgrpc";
 
 service Eos {
   // Replies to a ping
-  rpc Ping (PingRequest) returns (PingReply) {}  
+  rpc Ping (PingRequest) returns (PingReply) {}
+
+  // Replise to a notification
+  rpc Notify (NotificationRequest) returns (NotificationResponse) {}
 
   // ---------------------------------------------------------------------
   // NAMESPACE
@@ -41,6 +44,8 @@ service Eos {
   // Replies to MD requests with a stream 
   rpc MD (MDRequest) returns (stream MDResponse) {}
 
+  rpc Notification (NotificationRequest) returns (stream NotificationResponse) {}
+
   // Replies to Find requests with a stream
   rpc Find (FindRequest) returns (stream MDResponse) {}
 
@@ -64,6 +69,14 @@ message PingReply {
   bytes message = 1;
 }
 
+message NotificationRequest {
+  bytes message = 1;
+}
+
+message NotificationResponse {
+  bool success = 1;
+}
+
 // ---------------------------------------------------------------------
 // NAMESPACE
 // ---------------------------------------------------------------------
@@ -219,6 +232,13 @@ message MDResponse {
   ContainerMdProto cmd = 3;
 }
 
+message MDNotification {
+  TYPE type = 1;
+  FileMdProto fmd = 2;
+  ContainerMdProto cmd = 3;
+  RoleId role = 4;
+}
+
 message FindRequest {
   TYPE type = 1;
   MDId id = 2;