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/*
* Copyright (C) 2018-2019 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 "db_high_priority_service.hpp"
#include "db_server.hpp"
#include "db_client.hpp"
db::high_priority_service::high_priority_service(
db::server& server, db::client& client)
: wsrep::high_priority_service(server.server_state())
, server_(server)
, client_(client)
, commit_seqno_()
{ }
int db::high_priority_service::start_transaction(
const wsrep::ws_handle& ws_handle,
const wsrep::ws_meta& ws_meta)
{
return client_.client_state().start_transaction(ws_handle, ws_meta);
}
int db::high_priority_service::next_fragment(const wsrep::ws_meta& ws_meta)
{
return client_.client_state().next_fragment(ws_meta);
}
const wsrep::transaction& db::high_priority_service::transaction() const
{
return client_.client_state().transaction();
}
int db::high_priority_service::adopt_transaction(const wsrep::transaction&)
{
throw wsrep::not_implemented_error();
}
int db::high_priority_service::apply_write_set(
const wsrep::ws_meta&,
const wsrep::const_buffer& buf,
wsrep::mutable_buffer&)
{
client_.se_trx_.start(&client_);
client_.se_trx_.apply(client_.client_state().transaction());
assert(buf.size() > sizeof(uint64_t));
::memcpy(&commit_seqno_, buf.data() + buf.size() - sizeof(uint64_t),
sizeof(uint64_t));
return 0;
}
int db::high_priority_service::apply_toi(
const wsrep::ws_meta&,
const wsrep::const_buffer&,
wsrep::mutable_buffer&)
{
throw wsrep::not_implemented_error();
}
int db::high_priority_service::apply_nbo_begin(
const wsrep::ws_meta&,
const wsrep::const_buffer&,
wsrep::mutable_buffer&)
{
throw wsrep::not_implemented_error();
}
int db::high_priority_service::commit(const wsrep::ws_handle& ws_handle,
const wsrep::ws_meta& ws_meta)
{
client_.client_state_.prepare_for_ordering(ws_handle, ws_meta, true);
int ret(client_.client_state_.before_commit());
if (ret == 0) client_.se_trx_.commit(ws_meta.gtid());
/* Local client session replaying. */
if (ws_meta.server_id() == server_.server_state().id()
&& client_.params_.check_sequential_consistency)
{
server_.check_sequential_consistency(ws_meta.client_id(),
commit_seqno_);
}
ret = ret || client_.client_state_.ordered_commit();
ret = ret || client_.client_state_.after_commit();
return ret;
}
int db::high_priority_service::rollback(const wsrep::ws_handle& ws_handle,
const wsrep::ws_meta& ws_meta)
{
client_.client_state_.prepare_for_ordering(ws_handle, ws_meta, false);
int ret(client_.client_state_.before_rollback());
assert(ret == 0);
client_.se_trx_.rollback();
ret = client_.client_state_.after_rollback();
assert(ret == 0);
return ret;
}
void db::high_priority_service::adopt_apply_error(wsrep::mutable_buffer& err)
{
client_.client_state_.adopt_apply_error(err);
}
void db::high_priority_service::after_apply()
{
client_.client_state_.after_applying();
}
int db::high_priority_service::log_dummy_write_set(
const wsrep::ws_handle& ws_handle,
const wsrep::ws_meta& ws_meta,
wsrep::mutable_buffer& err)
{
int ret(client_.client_state_.start_transaction(ws_handle, ws_meta));
assert(ret == 0);
if (ws_meta.ordered())
{
client_.client_state_.adopt_apply_error(err);
client_.client_state_.prepare_for_ordering(ws_handle, ws_meta, true);
ret = client_.client_state_.before_commit();
assert(ret == 0);
ret = client_.client_state_.ordered_commit();
assert(ret == 0);
ret = client_.client_state_.after_commit();
assert(ret == 0);
}
client_.client_state_.after_applying();
return ret;
}
bool db::high_priority_service::is_replaying() const
{
return false;
}
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