From f9497861c8c7ebe1363a02646eb7143d6caaa1c8 Mon Sep 17 00:00:00 2001
From: Alexandr Morozov <lk4d4math@gmail.com>
Date: Thu, 5 Jun 2014 13:35:24 +0400
Subject: [PATCH] Fix race in LogEvent

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Upstream-commit: a1b7a35c90f05b113b7c3aa474b74d1d2afbf7b6
Component: engine
---
 components/engine/server/server.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/engine/server/server.go b/components/engine/server/server.go
index af62db879d..76a51e796f 100644
--- a/components/engine/server/server.go
+++ b/components/engine/server/server.go
@@ -2402,12 +2402,14 @@ func (srv *Server) LogEvent(action, id, from string) *utils.JSONMessage {
 	now := time.Now().UTC().Unix()
 	jm := utils.JSONMessage{Status: action, ID: id, From: from, Time: now}
 	srv.AddEvent(jm)
+	srv.Lock()
 	for _, c := range srv.listeners {
 		select { // non blocking channel
 		case c <- jm:
 		default:
 		}
 	}
+	srv.Unlock()
 	return &jm
 }