bootstrap_impl.h

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/* Copyright (c) 2015, 2022, 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
   documentation.  The authors of MySQL hereby grant you an additional
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   This program is distributed in the hope that it will be useful,
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.
 
   You should have received a copy of the GNU General Public License
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef BOOTSTRAP_IMPL_H
#define BOOTSTRAP_IMPL_H 1
#include <string>
 
#include "sql/sql_bootstrap.h"  // MAX_BOOTSTRAP_QUERY_SIZE
 
namespace bootstrap {
 
/** Abstract interface to reading bootstrap commands */
class Command_iterator {
 public:
  typedef void (*log_function_t)(const char *message);
 
  /**
    start processing the iterator
    @retval false Success
    @retval true failure
  */
  virtual bool begin(void) { return false; }
 
  /**
    Get the next query string.
 
    @param[out] query return the query
    @return one of the READ_BOOTSTRAP
  */
  virtual int next(std::string &query) = 0;
 
  virtual void report_error_details(log_function_t log) = 0;
 
  /** End processing the iterator */
  virtual void end(void) {}
 
 protected:
  Command_iterator() = default;
  ~Command_iterator() = default;
};
 
/** File bootstrap command reader */
class File_command_iterator : public Command_iterator {
 public:
  File_command_iterator(const char *file_name, MYSQL_FILE *input,
                        fgets_fn_t fgets_fn)
      : m_input(input), m_fgets_fn(fgets_fn) {
    m_parser_state.init(file_name);
  }
  virtual ~File_command_iterator();
 
  int next(std::string &query) override;
 
  void report_error_details(log_function_t log) override;
 
 protected:
  bootstrap_parser_state m_parser_state;
  MYSQL_FILE *m_input;
  fgets_fn_t m_fgets_fn;
};
 
}  // namespace bootstrap
 
#endif /* BOOTSTRAP_IMPL_H */