From 3b45b8d60b9f0a1678f5f497345e21f7bc71675a Mon Sep 17 00:00:00 2001
From: Craig Tiller <ctiller@google.com>
Date: Tue, 29 Nov 2016 12:31:14 -0800
Subject: Revert "Test credentials provider update"

---
 test/cpp/util/test_credentials_provider.cc | 52 ++++++++++++++++++++++++------
 1 file changed, 42 insertions(+), 10 deletions(-)

(limited to 'test/cpp/util/test_credentials_provider.cc')

diff --git a/test/cpp/util/test_credentials_provider.cc b/test/cpp/util/test_credentials_provider.cc
index 909b02a701..0456b96667 100644
--- a/test/cpp/util/test_credentials_provider.cc
+++ b/test/cpp/util/test_credentials_provider.cc
@@ -43,9 +43,25 @@
 #include "test/core/end2end/data/ssl_test_data.h"
 
 namespace grpc {
-namespace testing {
 namespace {
 
+using grpc::testing::CredentialTypeProvider;
+
+// Provide test credentials. Thread-safe.
+class CredentialsProvider {
+ public:
+  virtual ~CredentialsProvider() {}
+
+  virtual void AddSecureType(
+      const grpc::string& type,
+      std::unique_ptr<CredentialTypeProvider> type_provider) = 0;
+  virtual std::shared_ptr<ChannelCredentials> GetChannelCredentials(
+      const grpc::string& type, ChannelArguments* args) = 0;
+  virtual std::shared_ptr<ServerCredentials> GetServerCredentials(
+      const grpc::string& type) = 0;
+  virtual std::vector<grpc::string> GetSecureCredentialsTypeList() = 0;
+};
+
 class DefaultCredentialsProvider : public CredentialsProvider {
  public:
   ~DefaultCredentialsProvider() override {}
@@ -129,21 +145,37 @@ class DefaultCredentialsProvider : public CredentialsProvider {
       added_secure_type_providers_;
 };
 
+gpr_once g_once_init_provider = GPR_ONCE_INIT;
 CredentialsProvider* g_provider = nullptr;
 
-}  // namespace
+void CreateDefaultProvider() { g_provider = new DefaultCredentialsProvider; }
 
-CredentialsProvider* GetCredentialsProvider() {
-  if (g_provider == nullptr) {
-    g_provider = new DefaultCredentialsProvider;
-  }
+CredentialsProvider* GetProvider() {
+  gpr_once_init(&g_once_init_provider, &CreateDefaultProvider);
   return g_provider;
 }
 
-void SetCredentialsProvider(CredentialsProvider* provider) {
-  // For now, forbids overriding provider.
-  GPR_ASSERT(g_provider == nullptr);
-  g_provider = provider;
+}  // namespace
+
+namespace testing {
+
+void AddSecureType(const grpc::string& type,
+                   std::unique_ptr<CredentialTypeProvider> type_provider) {
+  GetProvider()->AddSecureType(type, std::move(type_provider));
+}
+
+std::shared_ptr<ChannelCredentials> GetChannelCredentials(
+    const grpc::string& type, ChannelArguments* args) {
+  return GetProvider()->GetChannelCredentials(type, args);
+}
+
+std::shared_ptr<ServerCredentials> GetServerCredentials(
+    const grpc::string& type) {
+  return GetProvider()->GetServerCredentials(type);
+}
+
+std::vector<grpc::string> GetSecureCredentialsTypeList() {
+  return GetProvider()->GetSecureCredentialsTypeList();
 }
 
 }  // namespace testing
-- 
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