113 lines
4.2 KiB
C++
113 lines
4.2 KiB
C++
/*
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Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// Implements
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#include "ndb_server_hooks.h"
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// Using interface defined in
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#include "sql/replication.h"
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// Using
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#include "storage/ndb/plugin/ndb_log.h"
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#include "storage/ndb/plugin/ndb_plugin_reference.h"
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bool Ndb_server_hooks::register_server_hooks(hook_t *before_connections_hook,
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hook_t *dd_upgrade_hook) {
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// Only allow one server_started hook to be installed
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DBUG_ASSERT(!m_server_state_observer);
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Ndb_plugin_reference ndbcluster_plugin;
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// Resolve pointer to the ndbcluster plugin, it may
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// not resolve in case plugin has failed to init()
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if (!ndbcluster_plugin.lock()) return false;
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m_server_state_observer = new Server_state_observer{
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sizeof(Server_state_observer),
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// before clients are allowed to connect
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(before_handle_connection_t)before_connections_hook,
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NULL, // before recovery
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NULL, // after engine recovery
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NULL, // after recovery
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NULL, // before shutdown
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NULL, // after shutdown
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(after_dd_upgrade_t)dd_upgrade_hook, // after DD upgrade
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};
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// Install server state observer to be called
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// before the server allows incoming connections
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if (register_server_state_observer(m_server_state_observer,
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ndbcluster_plugin.handle())) {
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ndb_log_error("Failed to register server state observer");
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return false;
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}
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return true;
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}
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bool Ndb_server_hooks::register_applier_start(hook_t *hook_func) {
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// Only allow one applier_start hook to be installed
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DBUG_ASSERT(!m_binlog_relay_io_observer);
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Ndb_plugin_reference ndbcluster_plugin;
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// Resolve pointer to the ndbcluster plugin
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if (!ndbcluster_plugin.lock()) return false;
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m_binlog_relay_io_observer = new Binlog_relay_IO_observer{
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sizeof(Binlog_relay_IO_observer),
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NULL, // thread_start
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NULL, // thread_stop
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(applier_start_t)hook_func, // applier_start
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NULL, // applier_stop
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NULL, // before_request_transmit
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NULL, // after_read_event
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NULL, // after_queue_event
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NULL, // after_reset
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NULL // applier_log_event
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};
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// Install replication observer to be called when applier thread start
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if (register_binlog_relay_io_observer(m_binlog_relay_io_observer,
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ndbcluster_plugin.handle())) {
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ndb_log_error("Failed to register binlog relay io observer");
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return false;
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}
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return true;
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}
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void Ndb_server_hooks::unregister_all(void) {
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if (m_server_state_observer)
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unregister_server_state_observer(m_server_state_observer, nullptr);
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if (m_binlog_relay_io_observer)
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unregister_binlog_relay_io_observer(m_binlog_relay_io_observer, nullptr);
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}
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Ndb_server_hooks::~Ndb_server_hooks() {
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delete m_server_state_observer;
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delete m_binlog_relay_io_observer;
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}
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