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/*
* Copyright (C) 2020 Codership Oy <info@codership.com>
*
* This file is part of wsrep-lib.
*
* Wsrep-lib 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, either version 2 of the License, or
* (at your option) any later version.
*
* Wsrep-lib 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 wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#include "event_service_v1.hpp"
#include "wsrep/event_service.hpp"
#include "wsrep/reporter.hpp"
#include "wsrep/logger.hpp"
#include "v26/wsrep_event_service.h"
#include "service_helpers.hpp"
#include <cassert>
namespace wsrep_event_service_v1
{
static std::atomic_flag initialized = ATOMIC_FLAG_INIT;
static void callback(
wsrep_event_context_t* ctx,
const char* name,
const char* value)
{
if (ctx)
{
wsrep::event_service* const impl
(reinterpret_cast<wsrep::event_service*>(ctx));
impl->process_event(name, value);
}
}
static const char* const log_string = "event service v1";
}
int wsrep::event_service_v1_probe(void* dlh)
{
typedef int (*init_fn)(wsrep_event_service_v1_t*);
typedef void (*deinit_fn)();
if (wsrep_impl::service_probe<init_fn>(
dlh, WSREP_EVENT_SERVICE_INIT_FUNC_V1,
wsrep_event_service_v1::log_string) ||
wsrep_impl::service_probe<deinit_fn>(
dlh, WSREP_EVENT_SERVICE_DEINIT_FUNC_V1,
wsrep_event_service_v1::log_string))
{
// diagnostic message was logged by wsrep_impl::service_probe()
return 1;
}
return 0;
}
int wsrep::event_service_v1_init(void* dlh,
wsrep::event_service* event_service)
{
if (not (dlh && event_service)) return EINVAL;
if (wsrep_event_service_v1::initialized.test_and_set()) return EALREADY;
wsrep_event_service_v1_t service =
{
wsrep_event_service_v1::callback,
reinterpret_cast<wsrep_event_context_t*>(event_service)
};
typedef int (*init_fn)(wsrep_event_service_v1_t*);
int const ret(wsrep_impl::service_init<init_fn>(
dlh, WSREP_EVENT_SERVICE_INIT_FUNC_V1, &service,
wsrep_event_service_v1::log_string));
if (ret)
{
wsrep_event_service_v1::initialized.clear();
}
return ret;
}
void wsrep::event_service_v1_deinit(void* dlh)
{
if (wsrep_event_service_v1::initialized.test_and_set())
{
// service was initialized
typedef int (*deinit_fn)();
wsrep_impl::service_deinit<deinit_fn>(
dlh, WSREP_EVENT_SERVICE_DEINIT_FUNC_V1,
wsrep_event_service_v1::log_string);
}
wsrep_event_service_v1::initialized.clear();
}
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