Remove final keyword for RetryPolicy so that storage SDK can inherit from it

sdk/core/azure-core/inc/azure/core/http/policies/policy.hpp

@@ -363,11 +363,7 @@ namespace Azure { namespace Core { namespace Http { namespace Policies {
     /**
      * @brief HTTP retry policy.
      */
-    class RetryPolicy
-#if !defined(_azure_TESTING_BUILD)
-        final
-#endif
-        : public HttpPolicy {
+    class RetryPolicy : public HttpPolicy {
     private:
       RetryOptions m_retryOptions;
 

sdk/storage/azure-storage-common/CMakeLists.txt

@@ -55,6 +55,7 @@ set(
     inc/azure/storage/common/internal/storage_bearer_token_auth.hpp
     inc/azure/storage/common/internal/storage_bearer_token_authentication_policy.hpp
     inc/azure/storage/common/internal/storage_per_retry_policy.hpp
+    inc/azure/storage/common/internal/storage_retry_policy.hpp
     inc/azure/storage/common/internal/storage_service_version_policy.hpp
     inc/azure/storage/common/internal/storage_switch_to_secondary_policy.hpp
     inc/azure/storage/common/internal/xml_wrapper.hpp
@@ -76,6 +77,7 @@ set(
     src/storage_credential.cpp
     src/storage_exception.cpp
     src/storage_per_retry_policy.cpp
+    src/storage_retry_policy.cpp
     src/storage_switch_to_secondary_policy.cpp
     src/xml_wrapper.cpp
 )

sdk/storage/azure-storage-common/inc/azure/storage/common/internal/storage_retry_policy.hpp

@@ -0,0 +1,27 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+#pragma once
+
+#include <azure/core/http/policies/policy.hpp>
+
+namespace Azure { namespace Storage { namespace _internal {
+
+  class StorageRetryPolicy final : public Core::Http::Policies::_internal::RetryPolicy {
+  public:
+    explicit StorageRetryPolicy(Core::Http::Policies::RetryOptions options)
+        : RetryPolicy(std::move(options))
+    {
+    }
+    ~StorageRetryPolicy() override {}
+
+  protected:
+    bool ShouldRetryOnResponse(
+        const Core::Http::RawResponse& response,
+        const Core::Http::Policies::RetryOptions& retryOptions,
+        int32_t attempt,
+        std::chrono::milliseconds& retryAfter,
+        double jitterFactor = -1) const override;
+  };
+
+}}} // namespace Azure::Storage::_internal

sdk/storage/azure-storage-common/src/storage_retry_policy.cpp

@@ -0,0 +1,44 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+#include "azure/storage/common/internal/storage_retry_policy.hpp"
+
+namespace Azure { namespace Storage { namespace _internal {
+
+  bool StorageRetryPolicy::ShouldRetryOnResponse(
+      const Core::Http::RawResponse& response,
+      const Core::Http::Policies::RetryOptions& retryOptions,
+      int32_t attempt,
+      std::chrono::milliseconds& retryAfter,
+      double jitterFactor) const
+  {
+    bool ret = RetryPolicy::ShouldRetryOnResponse(
+        response, retryOptions, attempt, retryAfter, jitterFactor);
+    if (ret)
+    {
+      return true;
+    }
+
+    if (attempt > retryOptions.MaxRetries)
+    {
+      return false;
+    }
+
+    if (static_cast<std::underlying_type_t<Core::Http::HttpStatusCode>>(response.GetStatusCode())
+        >= 400)
+    {
+      const auto& headers = response.GetHeaders();
+      auto ite = headers.find("x-ms-copy-source-status-code");
+      if (ite != headers.end())
+      {
+        auto innerStatusCode = static_cast<Core::Http::HttpStatusCode>(std::stoi(ite->second));
+        if (retryOptions.StatusCodes.find(innerStatusCode) != retryOptions.StatusCodes.end())
+        {
+          return true;
+        }
+      }
+    }
+    return false;
+  }
+
+}}} // namespace Azure::Storage::_internal