From 94e296c3574180178337720dac505a6662dcd252 Mon Sep 17 00:00:00 2001
From: Yang Gao <yangg@google.com>
Date: Fri, 13 Mar 2015 16:06:56 -0700
Subject: [PATCH] Add error logs when credentials are created with non-positive
 lifetimes

---
 src/cpp/client/secure_credentials.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/cpp/client/secure_credentials.cc b/src/cpp/client/secure_credentials.cc
index fa5ce1e5d48..c0dfaef3a53 100644
--- a/src/cpp/client/secure_credentials.cc
+++ b/src/cpp/client/secure_credentials.cc
@@ -99,6 +99,8 @@ std::unique_ptr<Credentials> ServiceAccountCredentials(
     const grpc::string& json_key, const grpc::string& scope,
     std::chrono::seconds token_lifetime) {
   if (token_lifetime.count() <= 0) {
+    gpr_log(GPR_ERROR,
+            "Trying to create JWTCredentials with non-positive lifetime");
     return WrapCredentials(nullptr);
   }
   gpr_timespec lifetime = gpr_time_from_seconds(token_lifetime.count());
@@ -110,6 +112,8 @@ std::unique_ptr<Credentials> ServiceAccountCredentials(
 std::unique_ptr<Credentials> JWTCredentials(
     const grpc::string &json_key, std::chrono::seconds token_lifetime) {
   if (token_lifetime.count() <= 0) {
+    gpr_log(GPR_ERROR,
+            "Trying to create JWTCredentials with non-positive lifetime");
     return WrapCredentials(nullptr);
   }
   gpr_timespec lifetime = gpr_time_from_seconds(token_lifetime.count());