deferred_response.hpp

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
 
#pragma once
 
#include <azure/core/response.hpp>
 
#include <functional>
 
namespace Azure { namespace Storage {
  namespace Blobs {
    class BlobServiceBatch;
    class BlobContainerBatch;
  } // namespace Blobs
  template <typename T> class DeferredResponse final {
  public:
    DeferredResponse(const DeferredResponse&) = delete;
    DeferredResponse(DeferredResponse&&) = default;
    DeferredResponse& operator=(const DeferredResponse&) = delete;
    DeferredResponse& operator=(DeferredResponse&&) = default;
 
    Response<T> GetResponse() const { return m_func(); }
 
  private:
    DeferredResponse(std::function<Response<T>()> func) : m_func(std::move(func)) {}
 
  private:
    std::function<Response<T>()> m_func;
 
    friend class Blobs::BlobServiceBatch;
    friend class Blobs::BlobContainerBatch;
  };
}} // namespace Azure::Storage