classic_set_option_sender.h

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/*
  Copyright (c) 2023, 2026, Oracle and/or its affiliates.
 
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License, version 2.0,
  as published by the Free Software Foundation.
 
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  as designated in a particular file or component or in included license
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  permission to link the program and your derivative works with the
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  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
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*/
 
#ifndef ROUTING_SRC_PROCESSORS_SENDERS_CLASSIC_SET_OPTION_SENDER_H_
#define ROUTING_SRC_PROCESSORS_SENDERS_CLASSIC_SET_OPTION_SENDER_H_
 
#include "processors/base/processor.h"
 
class SetOptionSender : public Processor {
 public:
  SetOptionSender(MysqlRoutingClassicConnectionBase *conn, uint16_t option)
      : Processor(conn), option_{option} {}
 
  enum class Stage {
    Command,
    Response,
    Eof,
    Error,
    Done,
  };
 
  stdx::expected<Result, std::error_code> process() override;
 
  void stage(Stage stage) { stage_ = stage; }
  Stage stage() const { return stage_; }
 
  std::optional<std::string_view> diagnostic_stage_name() const override;
 
 private:
  stdx::expected<Result, std::error_code> command();
  stdx::expected<Result, std::error_code> response();
  stdx::expected<Result, std::error_code> eof();
  stdx::expected<Result, std::error_code> error();
 
  Stage stage_{Stage::Command};
 
  uint16_t option_;
};
 
#endif  // ROUTING_SRC_PROCESSORS_SENDERS_CLASSIC_SET_OPTION_SENDER_H_