From f98c4b0e10bd754b37214110d42595ad66107b30 Mon Sep 17 00:00:00 2001
From: Matt Parker <mdparker89@gmail.com>
Date: Wed, 6 Aug 2014 16:45:22 -0400
Subject: [PATCH] Add leader change event for followers

Fixes coreos/etcd#913
---
 server.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/server.go b/server.go
index 8a9d05c..e953907 100644
--- a/server.go
+++ b/server.go
@@ -946,6 +946,10 @@ func (s *server) processAppendEntriesRequest(req *AppendEntriesRequest) (*Append
 
 	if req.Term == s.currentTerm {
 		_assert(s.State() != Leader, "leader.elected.at.same.term.%d\n", s.currentTerm)
+		
+		if s.leader != req.LeaderName {
+			s.DispatchEvent(newEvent(LeaderChangeEventType, req.LeaderName, s.leader))
+		}
 
 		// step-down to follower when it is a candidate
 		if s.state == Candidate {