From d78c49a648f4672919cca440067a43b7d466304c Mon Sep 17 00:00:00 2001
From: Alexander Fenster <fenster@google.com>
Date: Thu, 13 Sep 2018 10:25:23 -0700
Subject: [PATCH] fix: use getRequestHeaders instead of getRequestMetadata

---
 packages/grpc-native-core/package.json       |  2 +-
 packages/grpc-native-core/src/credentials.js | 15 ++++++++-------
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/packages/grpc-native-core/package.json b/packages/grpc-native-core/package.json
index b10f9eb8..e079fdbd 100644
--- a/packages/grpc-native-core/package.json
+++ b/packages/grpc-native-core/package.json
@@ -39,7 +39,7 @@
     "body-parser": "^1.15.2",
     "electron-mocha": "^3.1.1",
     "express": "^4.14.0",
-    "google-auth-library": "^0.9.2",
+    "google-auth-library": "^2.0.0",
     "google-protobuf": "^3.0.0",
     "istanbul": "^0.4.4",
     "lodash": "^4.17.4",
diff --git a/packages/grpc-native-core/src/credentials.js b/packages/grpc-native-core/src/credentials.js
index 28b668b1..3c05329e 100644
--- a/packages/grpc-native-core/src/credentials.js
+++ b/packages/grpc-native-core/src/credentials.js
@@ -195,16 +195,17 @@ exports.createFromMetadataGenerator = function(metadata_generator) {
 exports.createFromGoogleCredential = function(google_credential) {
   return exports.createFromMetadataGenerator(function(auth_context, callback) {
     var service_url = auth_context.service_url;
-    google_credential.getRequestMetadata(service_url, function(err, header) {
-      if (err) {
+    google_credential.getRequestHeaders(service_url)
+      .then(function(header) {
+        var metadata = new Metadata();
+        metadata.add('authorization', header.Authorization);
+        callback(null, metadata);
+      })
+      .catch(function(err) {
         common.log(constants.logVerbosity.INFO, 'Auth error:' + err);
         callback(err);
         return;
-      }
-      var metadata = new Metadata();
-      metadata.add('authorization', header.Authorization);
-      callback(null, metadata);
-    });
+      });
   });
 };