add logic to delete and srore sub

grpcapi/agenda.proto

@@ -16,6 +16,7 @@ service Agenda {
     
     rpc SubscribeEvent(SubscribeEventRequest) returns (SubscribeEventResponse) {}
     rpc UnsubscribeEvent(UnsubscribeEventRequest) returns (UnsubscribeEventResponse) {}
+    rpc DeleteSubscription(DeleteSubscriptionRequest) returns (DeleteSubscriptionResponse) {}
 }
 
 message CreateEventRequest {
@@ -70,4 +71,14 @@ message UnsubscribeEventRequest {
 
 message UnsubscribeEventResponse {
     bool ok = 39;
+}
+
+message DeleteSubscriptionRequest {
+    string subscriber = 32;
+    string eventid = 33;
+    google.protobuf.Struct data = 34;
+}
+
+message DeleteSubscriptionResponse {
+    bool ok = 41;
 }