102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
|
|
|
|
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 CONNECTION_CONTROL_INTERFACES_H
|
|
#define CONNECTION_CONTROL_INTERFACES_H
|
|
|
|
#include <mysql/plugin_audit.h> /* mysql_event_connection */
|
|
#include <string> /* std::string */
|
|
#include <vector> /* std::vector */
|
|
|
|
#include "plugin/connection_control/connection_control_data.h" /* Variables and Status */
|
|
|
|
namespace connection_control {
|
|
/* Typedefs for convenience */
|
|
typedef std::string Sql_string;
|
|
|
|
/* Forward declarations */
|
|
class Connection_event_coordinator_services;
|
|
|
|
class Error_handler {
|
|
public:
|
|
virtual void handle_error(longlong errcode, ...) = 0;
|
|
virtual ~Error_handler() {}
|
|
};
|
|
|
|
/**
|
|
Interface for recording connection events
|
|
*/
|
|
|
|
class Connection_event_records {
|
|
public:
|
|
virtual bool create_or_update_entry(const Sql_string &s) = 0;
|
|
virtual bool remove_entry(const Sql_string &s) = 0;
|
|
virtual bool match_entry(const Sql_string &s, void *value) = 0;
|
|
virtual void reset_all() = 0;
|
|
virtual ~Connection_event_records() { /* Emptiness! */
|
|
}
|
|
};
|
|
|
|
/**
|
|
Interface for defining action on connection events
|
|
*/
|
|
class Connection_event_observer {
|
|
public:
|
|
virtual bool notify_event(MYSQL_THD thd,
|
|
Connection_event_coordinator_services *coordinator,
|
|
const mysql_event_connection *connection_event,
|
|
Error_handler *error_handler) = 0;
|
|
virtual bool notify_sys_var(
|
|
Connection_event_coordinator_services *coordinator,
|
|
opt_connection_control variable, void *new_value,
|
|
Error_handler *error_handler) = 0;
|
|
virtual ~Connection_event_observer() { /* Nothing to see here! */
|
|
}
|
|
};
|
|
|
|
/* Status variable action enum */
|
|
typedef enum status_var_action {
|
|
ACTION_NONE = 0,
|
|
ACTION_INC,
|
|
ACTION_RESET,
|
|
ACTION_LAST /* Must be at the end */
|
|
} status_var_action;
|
|
|
|
/**
|
|
Interface to provide service to observers
|
|
*/
|
|
|
|
class Connection_event_coordinator_services {
|
|
public:
|
|
virtual bool notify_status_var(Connection_event_observer **observer,
|
|
stats_connection_control status_var,
|
|
status_var_action action) = 0;
|
|
virtual bool register_event_subscriber(
|
|
Connection_event_observer **subscriber,
|
|
std::vector<opt_connection_control> *sys_vars,
|
|
std::vector<stats_connection_control> *status_vars) = 0;
|
|
virtual ~Connection_event_coordinator_services() { /* go away */
|
|
}
|
|
};
|
|
} // namespace connection_control
|
|
#endif // !CONNECTION_CONTROL_INTERFACES_H
|