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/* Copyright 2018-2022 Codership Oy <info@codership.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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 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 */
#include "my_global.h"
#include "wsrep_api.h"
#include "wsrep_server_state.h"
#include "wsrep_allowlist_service.h"
#include "wsrep_event_service.h"
#include "wsrep_binlog.h" /* init/deinit group commit */
#include "wsrep_plugin.h" /* make/destroy sysvar helpers */
mysql_mutex_t LOCK_wsrep_server_state;
mysql_cond_t COND_wsrep_server_state;
#ifdef HAVE_PSI_INTERFACE
PSI_mutex_key key_LOCK_wsrep_server_state;
PSI_cond_key key_COND_wsrep_server_state;
#endif
wsrep::provider::services Wsrep_server_state::m_provider_services;
Wsrep_server_state* Wsrep_server_state::m_instance;
std::unique_ptr<wsrep::provider_options> Wsrep_server_state::m_options;
std::vector<st_mysql_sys_var*> Wsrep_server_state::m_sysvars;
Wsrep_server_state::Wsrep_server_state(const std::string& name,
const std::string& incoming_address,
const std::string& address,
const std::string& working_dir,
const wsrep::gtid& initial_position,
int max_protocol_version)
: wsrep::server_state(m_mutex,
m_cond,
m_service,
NULL,
name,
incoming_address,
address,
working_dir,
initial_position,
max_protocol_version,
wsrep::server_state::rm_sync)
, m_mutex(&LOCK_wsrep_server_state)
, m_cond(&COND_wsrep_server_state)
, m_service(*this)
{ }
Wsrep_server_state::~Wsrep_server_state() = default;
void Wsrep_server_state::init_once(const std::string& name,
const std::string& incoming_address,
const std::string& address,
const std::string& working_dir,
const wsrep::gtid& initial_position,
int max_protocol_version)
{
if (m_instance == 0)
{
mysql_mutex_init(key_LOCK_wsrep_server_state, &LOCK_wsrep_server_state,
MY_MUTEX_INIT_FAST);
mysql_cond_init(key_COND_wsrep_server_state, &COND_wsrep_server_state, 0);
m_instance = new Wsrep_server_state(name,
incoming_address,
address,
working_dir,
initial_position,
max_protocol_version);
}
}
int Wsrep_server_state::init_provider(const std::string& provider,
const std::string& options)
{
DBUG_ASSERT(m_instance);
int ret= m_instance->load_provider(provider, options);
if (ret)
{
WSREP_ERROR("Failed to load provider %s with options %s",
provider.c_str(), options.c_str());
return ret;
}
return 0;
}
int Wsrep_server_state::init_options()
{
if (!m_instance) return 1;
m_options= std::unique_ptr<wsrep::provider_options>(
new wsrep::provider_options(m_instance->provider()));
int ret= m_options->initial_options();
if (ret)
{
WSREP_ERROR("Failed to initialize provider options");
m_options = nullptr;
m_instance->unload_provider();
return ret;
}
m_options->for_each([](wsrep::provider_options::option *opt) {
struct st_mysql_sys_var *var= wsrep_make_sysvar_for_option(opt);
m_sysvars.push_back(var);
});
m_sysvars.push_back(nullptr);
wsrep_provider_plugin_set_sysvars(&m_sysvars[0]);
return 0;
}
void Wsrep_server_state::deinit_provider()
{
m_options = nullptr;
m_instance->unload_provider();
}
void Wsrep_server_state::destroy()
{
if (m_instance)
{
delete m_instance;
m_instance= 0;
mysql_mutex_destroy(&LOCK_wsrep_server_state);
mysql_cond_destroy(&COND_wsrep_server_state);
for (auto var : m_sysvars)
{
if (var)
{
wsrep_destroy_sysvar(var);
}
}
m_sysvars.clear();
}
}
void Wsrep_server_state::init_provider_services()
{
m_provider_services.allowlist_service= wsrep_allowlist_service_init();
m_provider_services.event_service= Wsrep_event_service::instance();
}
void Wsrep_server_state::deinit_provider_services()
{
if (m_provider_services.allowlist_service)
wsrep_allowlist_service_deinit();
m_provider_services= wsrep::provider::services();
}
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