LYN-7473: Ensure Requestor background thread is shutdown correctly (#4744)

Signed-off-by: rppotter <rppotter@amazon.com>

Gems/HttpRequestor/Code/Source/HttpRequestManager.cpp

@@ -36,19 +36,24 @@ namespace HttpRequestor
         desc.m_cpuId = AFFINITY_MASK_USERTHREADS;
         m_runThread = true;
         AWSNativeSDKInit::InitializationManager::InitAwsApi();
-        auto function = AZStd::bind(&Manager::ThreadFunction, this);
+        auto function = [this]
+        {
+            ThreadFunction();
+        };
         m_thread = AZStd::thread(desc, function);
     }
 
     Manager::~Manager()
     {
-        AWSNativeSDKInit::InitializationManager::Shutdown();
         m_runThread = false;
         m_requestConditionVar.notify_all();
         if (m_thread.joinable())
         {
             m_thread.join();
         }
+
+        // Shutdown after background thread has closed.
+        AWSNativeSDKInit::InitializationManager::Shutdown();
     }
 
     void Manager::AddRequest(Parameters&& httpRequestParameters)
@@ -80,9 +85,14 @@ namespace HttpRequestor
 
     void Manager::HandleRequestBatch()
     {
-        // Lock mutex and wait for work to be signalled via the condition variable
+        // Lock mutex and wait for work to be signaled via the condition variable
         AZStd::unique_lock<AZStd::mutex> lock(m_requestMutex);
-        m_requestConditionVar.wait(lock, [&] { return !m_runThread || !m_requestsToHandle.empty() || !m_textRequestsToHandle.empty(); });
+        m_requestConditionVar.wait(
+            lock,
+            [&]
+            {
+                return !m_runThread || !m_requestsToHandle.empty() || !m_textRequestsToHandle.empty();
+            });
 
         // Swap queues
         AZStd::queue<Parameters> requestsToHandle;
@@ -114,7 +124,8 @@ namespace HttpRequestor
         config.enableTcpKeepAlive = AZ_TRAIT_AZFRAMEWORK_AWS_ENABLE_TCP_KEEP_ALIVE_SUPPORTED;
         std::shared_ptr<Aws::Http::HttpClient> httpClient = Aws::Http::CreateHttpClient(config);
 
-        auto httpRequest = Aws::Http::CreateHttpRequest(httpRequestParameters.GetURI(), httpRequestParameters.GetMethod(), Aws::Utils::Stream::DefaultResponseStreamFactoryMethod);
+        auto httpRequest = Aws::Http::CreateHttpRequest(
+            httpRequestParameters.GetURI(), httpRequestParameters.GetMethod(), Aws::Utils::Stream::DefaultResponseStreamFactoryMethod);
 
         AZ_Assert(httpRequest, "HttpRequest not created!");
 
@@ -160,7 +171,8 @@ namespace HttpRequestor
         config.enableTcpKeepAlive = AZ_TRAIT_AZFRAMEWORK_AWS_ENABLE_TCP_KEEP_ALIVE_SUPPORTED;
         std::shared_ptr<Aws::Http::HttpClient> httpClient = Aws::Http::CreateHttpClient(config);
 
-        auto httpRequest = Aws::Http::CreateHttpRequest(httpRequestParameters.GetURI(), httpRequestParameters.GetMethod(), Aws::Utils::Stream::DefaultResponseStreamFactoryMethod);
+        auto httpRequest = Aws::Http::CreateHttpRequest(
+            httpRequestParameters.GetURI(), httpRequestParameters.GetMethod(), Aws::Utils::Stream::DefaultResponseStreamFactoryMethod);
 
         for (const auto& it : httpRequestParameters.GetHeaders())
         {
@@ -172,7 +184,7 @@ namespace HttpRequestor
             httpRequest->AddContentBody(httpRequestParameters.GetBodyStream());
         }
 
-        auto httpResponse = httpClient->MakeRequest(httpRequest);
+        const auto httpResponse = httpClient->MakeRequest(httpRequest);
 
         if (!httpResponse)
         {
@@ -192,4 +204,4 @@ namespace HttpRequestor
         AZStd::string data(std::istreambuf_iterator<char>(httpResponse->GetResponseBody()), eos);
         httpRequestParameters.GetCallback()(AZStd::move(data), httpResponse->GetResponseCode());
     }
-}
+} // namespace HttpRequestor

Gems/HttpRequestor/Code/Source/HttpRequestorSystemComponent.cpp

@@ -63,11 +63,9 @@ namespace HttpRequestor
     
     void HttpRequestorSystemComponent::Reflect(AZ::ReflectContext* context)
     {
-        if (AZ::SerializeContext* serialize = azrtti_cast<AZ::SerializeContext*>(context))
+        if (auto serialize = azrtti_cast<AZ::SerializeContext*>(context))
         {
-            serialize->Class<HttpRequestorSystemComponent, AZ::Component>()
-                ->Version(1);
-                ;
+            serialize->Class<HttpRequestorSystemComponent, AZ::Component>()->Version(1);
 
             if (AZ::EditContext* ec = serialize->GetEditContext())
             {
@@ -75,8 +73,7 @@ namespace HttpRequestor
                     ->ClassElement(AZ::Edit::ClassElements::EditorData, "")
                     // ->Attribute(AZ::Edit::Attributes::Category, "") Set a category
                     ->Attribute(AZ::Edit::Attributes::AppearsInAddComponentMenu, AZ_CRC("System"))
-                        ->Attribute(AZ::Edit::Attributes::AutoExpand, true)
-                    ;
+                    ->Attribute(AZ::Edit::Attributes::AutoExpand, true);
             }
         }
     }

Gems/HttpRequestor/Code/Tests/HttpRequestorTest.cpp

@@ -19,7 +19,7 @@ class HttpTest
 {
 };
 
-TEST_F(HttpTest, DISABLED_HttpRequesterTest)
+TEST_F(HttpTest, HttpRequesterTest)
 {
     HttpRequestor::Manager httpRequestManager;
 
@@ -35,17 +35,14 @@ TEST_F(HttpTest, DISABLED_HttpRequesterTest)
         requestConditionVar.wait_for(lock, AZStd::chrono::milliseconds(10));
     }
 
-    httpRequestManager.AddTextRequest(
-        HttpRequestor::TextParameters("https://httpbin.org/ip",
-            Aws::Http::HttpMethod::HTTP_GET,
+    httpRequestManager.AddTextRequest(HttpRequestor::TextParameters(
+        "https://httpbin.org/ip", Aws::Http::HttpMethod::HTTP_GET,
         [&resultData, &resultCode, &requestConditionVar](const AZStd::string& data, Aws::Http::HttpResponseCode code)
         {
             resultData = data;
             resultCode = code;
             requestConditionVar.notify_all();
-            }
-        )
-    );
+        }));
 
     {
         AZStd::unique_lock<AZStd::mutex> lock(requestMutex);