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79d0194eef
- Provider options are read from the provider during startup, before plugins are initialized. - New wsrep_provider plugin for which sysvars are generated dynamically from options read from the provider. - The plugin is enabled by option plugin-wsrep-provider=ON. If enabled, wsrep_provider_options can no longer be used, (an error is raised on attempts to do so). - Each option is either string, integer, double or bool - Options can be dynamic / readonly - Options can be deprecated Limitations: - We do not check that the value of a provider option falls within a certain range. This type of validation is still done in Galera side. Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
97 lines
3 KiB
C++
97 lines
3 KiB
C++
/* Copyright 2018-2021 Codership Oy <info@codership.com>
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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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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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#ifndef WSREP_SERVER_STATE_H
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#define WSREP_SERVER_STATE_H
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/* wsrep-lib */
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#include "wsrep/server_state.hpp"
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#include "wsrep/provider.hpp"
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#include "wsrep/provider_options.hpp"
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/* implementation */
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#include "wsrep_server_service.h"
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#include "wsrep_mutex.h"
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#include "wsrep_condition_variable.h"
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class Wsrep_server_state : public wsrep::server_state
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{
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public:
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static void init_once(const std::string& name,
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const std::string& incoming_address,
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const std::string& address,
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const std::string& working_dir,
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const wsrep::gtid& initial_position,
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int max_protocol_version);
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static int init_provider(const std::string& provider,
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const std::string& options);
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static int init_options();
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static void deinit_provider();
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static void destroy();
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static Wsrep_server_state& instance()
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{
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return *m_instance;
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}
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static bool is_inited()
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{
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return (m_instance != NULL);
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}
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static wsrep::provider& get_provider()
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{
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return instance().provider();
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}
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static wsrep::provider_options* get_options()
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{
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return m_options.get();
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}
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static bool has_capability(int capability)
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{
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return (get_provider().capabilities() & capability);
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}
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static void init_provider_services();
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static void deinit_provider_services();
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static const wsrep::provider::services& provider_services()
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{
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return m_provider_services;
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}
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private:
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Wsrep_server_state(const std::string& name,
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const std::string& incoming_address,
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const std::string& address,
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const std::string& working_dir,
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const wsrep::gtid& initial_position,
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int max_protocol_version);
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~Wsrep_server_state();
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Wsrep_mutex m_mutex;
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Wsrep_condition_variable m_cond;
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Wsrep_server_service m_service;
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static wsrep::provider::services m_provider_services;
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static Wsrep_server_state* m_instance;
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static std::unique_ptr<wsrep::provider_options> m_options;
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// Sysvars for provider plugin. We keep these here because
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// they are allocated dynamically and must be freed at some
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// point during shutdown (after the plugin is deinitialized).
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static std::vector<st_mysql_sys_var *> m_sysvars;
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};
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#endif // WSREP_SERVER_STATE_H
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