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6aa6b6f50a
The write set handle and meta data are needed for SR transactions where the commit context is not known when the transaction starts. The passed handle and meta data can be set through client_state prepare_for_ordering() call before performing commit.
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
//
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// Copyright (C) 2018 Codership Oy <info@codership.com>
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//
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#include "db_high_priority_service.hpp"
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#include "db_server.hpp"
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#include "db_client.hpp"
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db::high_priority_service::high_priority_service(
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db::server& server, db::client& client)
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: wsrep::high_priority_service(server_.server_state())
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, server_(server)
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, client_(client)
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{ }
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int db::high_priority_service::start_transaction(
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const wsrep::ws_handle& ws_handle,
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const wsrep::ws_meta& ws_meta)
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{
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return client_.client_state().start_transaction(ws_handle, ws_meta);
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}
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void db::high_priority_service::adopt_transaction(const wsrep::transaction&)
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{
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throw wsrep::not_implemented_error();
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}
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int db::high_priority_service::apply_write_set(const wsrep::const_buffer&)
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{
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client_.se_trx_.start(&client_);
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client_.se_trx_.apply(client_.client_state().transaction());
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return 0;
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}
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int db::high_priority_service::apply_toi(
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const wsrep::ws_meta&,
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const wsrep::const_buffer&)
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{
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throw wsrep::not_implemented_error();
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}
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int db::high_priority_service::commit(const wsrep::ws_handle&,
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const wsrep::ws_meta&)
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{
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int ret(client_.client_state_.before_commit());
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if (ret == 0) client_.se_trx_.commit();
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ret = ret || client_.client_state_.ordered_commit();
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ret = ret || client_.client_state_.after_commit();
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return ret;
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}
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int db::high_priority_service::rollback()
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{
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int ret(client_.client_state_.before_rollback());
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assert(ret == 0);
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client_.se_trx_.rollback();
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ret = client_.client_state_.after_rollback();
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assert(ret == 0);
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return ret;
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}
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void db::high_priority_service::after_apply()
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{
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client_.client_state_.after_statement();
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}
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bool db::high_priority_service::is_replaying() const
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{
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return (client_.client_state_.transaction().state() == wsrep::transaction::s_replaying);
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}
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