Program Listing for File service_client.hpp

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// Copyright 2020-2021 Christophe Bedard
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef EMAIL__SERVICE_CLIENT_HPP_
#define EMAIL__SERVICE_CLIENT_HPP_

#include <chrono>
#include <map>
#include <memory>
#include <optional>  // NOLINT cpplint mistakes <optional> for a C system header
#include <string>
#include <utility>

#include "email/log.hpp"
#include "email/macros.hpp"
#include "email/publisher.hpp"
#include "email/safe_map.hpp"
#include "email/service.hpp"
#include "email/service_handler.hpp"
#include "email/service_info.hpp"
#include "email/visibility_control.hpp"

namespace email
{


class ServiceClient : public ServiceObject
{
public:

  EMAIL_PUBLIC
  explicit ServiceClient(const std::string & service_name);

  EMAIL_PUBLIC
  ~ServiceClient();


  EMAIL_PUBLIC
  void
  send_request(const std::string & request, const SequenceNumber sequence_number);


  EMAIL_PUBLIC
  SequenceNumber
  send_request(const std::string & request);


  EMAIL_PUBLIC
  bool
  has_response(const SequenceNumber sequence_number);


  EMAIL_PUBLIC
  bool
  has_response();


  EMAIL_PUBLIC
  std::optional<std::string>
  get_response(const SequenceNumber sequence_number);


  EMAIL_PUBLIC
  std::optional<std::pair<std::string, ServiceInfo>>
  get_response_with_info(const SequenceNumber sequence_number);


  EMAIL_PUBLIC
  std::optional<std::pair<std::string, ServiceInfo>>
  get_response_with_info();

private:
  EMAIL_DISABLE_COPY(ServiceClient)

  std::shared_ptr<Logger> logger_;
  ServiceHandler::ResponseMap::SharedPtr responses_;
  Publisher pub_;
};

}  // namespace email

#endif  // EMAIL__SERVICE_CLIENT_HPP_