From 0efb1e105d781b2a659b15b9e8aa33d78db35ca7 Mon Sep 17 00:00:00 2001
From: Menghan Li <menghanl@google.com>
Date: Thu, 1 Nov 2018 14:31:10 -0700
Subject: [PATCH] binarylog: no warning if no config string is set (is empty
 string) (#2430)

---
 internal/binarylog/env_config.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/binarylog/env_config.go b/internal/binarylog/env_config.go
index be6ea02cb35e..eb188eae5a3e 100644
--- a/internal/binarylog/env_config.go
+++ b/internal/binarylog/env_config.go
@@ -45,6 +45,9 @@ import (
 // If two configs exist for one certain method or service, the one specified
 // later overrides the privous config.
 func NewLoggerFromConfigString(s string) Logger {
+	if s == "" {
+		return nil
+	}
 	l := newEmptyLogger()
 	methods := strings.Split(s, ",")
 	for _, method := range methods {