From 6492f06a3e19bd6bda1c3f73732f5fa42138fe81 Mon Sep 17 00:00:00 2001
From: Armon Dadgar <armon.dadgar@gmail.com>
Date: Mon, 18 Aug 2014 15:20:21 -0700
Subject: [PATCH] consul: Provide ETag to avoid expensive policy fetch

---
 consul/acl.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/consul/acl.go b/consul/acl.go
index 606e3c560..abc011054 100644
--- a/consul/acl.go
+++ b/consul/acl.go
@@ -112,6 +112,9 @@ func (s *Server) lookupACL(id, authDC string) (acl.ACL, error) {
 		Datacenter: authDC,
 		ACL:        id,
 	}
+	if cached != nil {
+		args.ETag = cached.ETag
+	}
 	var out structs.ACLPolicy
 	err := s.RPC("ACL.GetPolicy", &args, &out)