72 lines
2.9 KiB
C++
72 lines
2.9 KiB
C++
/* Copyright (c) 2016, 2017, 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_COORDINATOR_H
|
|
#define CONNECTION_CONTROL_COORDINATOR_H
|
|
|
|
#include "plugin/connection_control/connection_control_interfaces.h" /* Connection_event_coordinator_services */
|
|
#include "plugin/connection_control/connection_control_memory.h" /* Connection_control_alloc */
|
|
|
|
namespace connection_control {
|
|
/**
|
|
Connection event coordinator.
|
|
This class will keep list of subscribers for different subevents
|
|
and notify them based on their preference.
|
|
*/
|
|
|
|
class Connection_event_coordinator
|
|
: public Connection_event_coordinator_services,
|
|
public Connection_control_alloc {
|
|
public:
|
|
Connection_event_coordinator() { reset(); }
|
|
~Connection_event_coordinator() { reset(); }
|
|
|
|
/* Functions to receive notification from server */
|
|
void notify_event(MYSQL_THD thd, Error_handler *error_handler,
|
|
const mysql_event_connection *connection_event);
|
|
void notify_sys_var(Error_handler *error_handler,
|
|
opt_connection_control variable, void *new_value);
|
|
|
|
/* Services provided to observers */
|
|
bool register_event_subscriber(
|
|
Connection_event_observer **subscriber,
|
|
std::vector<opt_connection_control> *sys_vars,
|
|
std::vector<stats_connection_control> *status_vars);
|
|
|
|
bool notify_status_var(Connection_event_observer **observer,
|
|
stats_connection_control status_var,
|
|
status_var_action action);
|
|
|
|
private:
|
|
void reset();
|
|
class Connection_event_subscriber {
|
|
public:
|
|
Connection_event_observer *m_subscriber;
|
|
bool m_sys_vars[OPT_LAST];
|
|
};
|
|
|
|
std::vector<Connection_event_subscriber> m_subscribers;
|
|
Connection_event_observer *m_status_vars_subscription[STAT_LAST];
|
|
};
|
|
} // namespace connection_control
|
|
#endif // !CONNECTION_CONTROL_COORDINATOR_H
|