text: /*
   * Copyright (c) 2018, 2020, 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.
   *
   * This program is also distributed with certain software (including
   * but not limited to OpenSSL) that is licensed under separate terms, as
   * designated in a particular file or component or in included license
   * documentation.  The authors of MySQL hereby grant you an additional
   * permission to link the program and your derivative works with the
   * separately licensed software that they have included with MySQL.
   * 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, version 2.0, for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #ifndef MODULES_ADMINAPI_CLUSTER_SET_INSTANCE_OPTION_H_
  #define MODULES_ADMINAPI_CLUSTER_SET_INSTANCE_OPTION_H_
  
  #include <string>
  
  #include "adminapi/cluster/cluster_impl.h"
  #include "modules/adminapi/mod_dba_cluster.h"
  #include "modules/command_interface.h"
  #include "mysqlshdk/libs/config/config.h"
  
  namespace mysqlsh {
  namespace dba {
  namespace cluster {
  
  class Set_instance_option : public Command_interface {
   public:
    Set_instance_option(
        const Cluster_impl &cluster,
        const mysqlshdk::db::Connection_options &instance_cnx_opts,
        const std::string &option, const std::string &value);
    Set_instance_option(
        const Cluster_impl &cluster,
        const mysqlshdk::db::Connection_options &instance_cnx_opts,
        const std::string &option, int64_t value);
  
    ~Set_instance_option() override;
  
    /**
     * Prepare the Cluster set_instance_option command for execution.
     * Validates parameters and others, more specifically:
     * - Validate if the option is valid, being the accepted values:
     *     - label
     *     - exitStateAction
     *     - memberWeight
     * - Validate the connection options
     * - Verify if the target instance belongs to the cluster
     * - Verify if the target cluster member is ONLINE
     * - Verify user privileges to execute operation;
     * - Verify if the target cluster member supports the option
     * - Verify if the cluster has quorum
     */
    void prepare() override;
  
    /**
     * Execute the Cluster set_instance_option command.
     *
     * @return An empty shcore::Value.
     */
    shcore::Value execute() override;
  
    /**
     * Rollback the command.
     *
     * NOTE: Not currently used.
     */
    void rollback() override;
  
    /**
     * Finalize the command execution.
     */
    void finish() override;
  
   private:
    const Cluster_impl &m_cluster;
    mysqlshdk::db::Connection_options m_instance_cnx_opts;
    std::string m_target_instance_address;
    std::string m_address_in_metadata;
    std::shared_ptr<mysqlsh::dba::Instance> m_target_instance;
    // Configuration object (to read and set instance configurations).
    std::unique_ptr<mysqlshdk::config::Config> m_cfg;
    const std::string &m_option;
    mysqlshdk::utils::nullable<std::string> m_value_str;
    mysqlshdk::utils::nullable<int64_t> m_value_int;
  
    void ensure_option_valid();
    void ensure_instance_belong_to_cluster();
    void ensure_target_member_reachable();
    void ensure_option_supported_target_member();
  };
  
  }  // namespace cluster
  }  // namespace dba
  }  // namespace mysqlsh
  
  #endif  // MODULES_ADMINAPI_CLUSTER_SET_INSTANCE_OPTION_H_
  